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Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
351df4b2 JK |
3 | * fs/f2fs/segment.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
351df4b2 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/bio.h> | |
11 | #include <linux/blkdev.h> | |
690e4a3e | 12 | #include <linux/prefetch.h> |
6b4afdd7 | 13 | #include <linux/kthread.h> |
74de593a | 14 | #include <linux/swap.h> |
60b99b48 | 15 | #include <linux/timer.h> |
1d7be270 | 16 | #include <linux/freezer.h> |
1eb1ef4a | 17 | #include <linux/sched/signal.h> |
351df4b2 JK |
18 | |
19 | #include "f2fs.h" | |
20 | #include "segment.h" | |
21 | #include "node.h" | |
5f656541 | 22 | #include "gc.h" |
9e4ded3f | 23 | #include "trace.h" |
6ec178da | 24 | #include <trace/events/f2fs.h> |
351df4b2 | 25 | |
9a7f143a CL |
26 | #define __reverse_ffz(x) __reverse_ffs(~(x)) |
27 | ||
7fd9e544 | 28 | static struct kmem_cache *discard_entry_slab; |
b01a9201 | 29 | static struct kmem_cache *discard_cmd_slab; |
184a5cd2 | 30 | static struct kmem_cache *sit_entry_set_slab; |
88b88a66 | 31 | static struct kmem_cache *inmem_entry_slab; |
7fd9e544 | 32 | |
f96999c3 JK |
33 | static unsigned long __reverse_ulong(unsigned char *str) |
34 | { | |
35 | unsigned long tmp = 0; | |
36 | int shift = 24, idx = 0; | |
37 | ||
38 | #if BITS_PER_LONG == 64 | |
39 | shift = 56; | |
40 | #endif | |
41 | while (shift >= 0) { | |
42 | tmp |= (unsigned long)str[idx++] << shift; | |
43 | shift -= BITS_PER_BYTE; | |
44 | } | |
45 | return tmp; | |
46 | } | |
47 | ||
9a7f143a CL |
48 | /* |
49 | * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since | |
50 | * MSB and LSB are reversed in a byte by f2fs_set_bit. | |
51 | */ | |
52 | static inline unsigned long __reverse_ffs(unsigned long word) | |
53 | { | |
54 | int num = 0; | |
55 | ||
56 | #if BITS_PER_LONG == 64 | |
f96999c3 | 57 | if ((word & 0xffffffff00000000UL) == 0) |
9a7f143a | 58 | num += 32; |
f96999c3 | 59 | else |
9a7f143a | 60 | word >>= 32; |
9a7f143a | 61 | #endif |
f96999c3 | 62 | if ((word & 0xffff0000) == 0) |
9a7f143a | 63 | num += 16; |
f96999c3 | 64 | else |
9a7f143a | 65 | word >>= 16; |
f96999c3 JK |
66 | |
67 | if ((word & 0xff00) == 0) | |
9a7f143a | 68 | num += 8; |
f96999c3 | 69 | else |
9a7f143a | 70 | word >>= 8; |
f96999c3 | 71 | |
9a7f143a CL |
72 | if ((word & 0xf0) == 0) |
73 | num += 4; | |
74 | else | |
75 | word >>= 4; | |
f96999c3 | 76 | |
9a7f143a CL |
77 | if ((word & 0xc) == 0) |
78 | num += 2; | |
79 | else | |
80 | word >>= 2; | |
f96999c3 | 81 | |
9a7f143a CL |
82 | if ((word & 0x2) == 0) |
83 | num += 1; | |
84 | return num; | |
85 | } | |
86 | ||
87 | /* | |
e1c42045 | 88 | * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because |
9a7f143a | 89 | * f2fs_set_bit makes MSB and LSB reversed in a byte. |
692223d1 | 90 | * @size must be integral times of unsigned long. |
9a7f143a | 91 | * Example: |
f96999c3 JK |
92 | * MSB <--> LSB |
93 | * f2fs_set_bit(0, bitmap) => 1000 0000 | |
94 | * f2fs_set_bit(7, bitmap) => 0000 0001 | |
9a7f143a CL |
95 | */ |
96 | static unsigned long __find_rev_next_bit(const unsigned long *addr, | |
97 | unsigned long size, unsigned long offset) | |
98 | { | |
99 | const unsigned long *p = addr + BIT_WORD(offset); | |
692223d1 | 100 | unsigned long result = size; |
9a7f143a | 101 | unsigned long tmp; |
9a7f143a CL |
102 | |
103 | if (offset >= size) | |
104 | return size; | |
105 | ||
692223d1 | 106 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 107 | offset %= BITS_PER_LONG; |
f96999c3 | 108 | |
692223d1 FL |
109 | while (1) { |
110 | if (*p == 0) | |
111 | goto pass; | |
9a7f143a | 112 | |
f96999c3 | 113 | tmp = __reverse_ulong((unsigned char *)p); |
692223d1 FL |
114 | |
115 | tmp &= ~0UL >> offset; | |
116 | if (size < BITS_PER_LONG) | |
117 | tmp &= (~0UL << (BITS_PER_LONG - size)); | |
9a7f143a | 118 | if (tmp) |
692223d1 FL |
119 | goto found; |
120 | pass: | |
121 | if (size <= BITS_PER_LONG) | |
122 | break; | |
9a7f143a | 123 | size -= BITS_PER_LONG; |
692223d1 | 124 | offset = 0; |
f96999c3 | 125 | p++; |
9a7f143a | 126 | } |
692223d1 FL |
127 | return result; |
128 | found: | |
129 | return result - size + __reverse_ffs(tmp); | |
9a7f143a CL |
130 | } |
131 | ||
132 | static unsigned long __find_rev_next_zero_bit(const unsigned long *addr, | |
133 | unsigned long size, unsigned long offset) | |
134 | { | |
135 | const unsigned long *p = addr + BIT_WORD(offset); | |
80609448 | 136 | unsigned long result = size; |
9a7f143a | 137 | unsigned long tmp; |
9a7f143a CL |
138 | |
139 | if (offset >= size) | |
140 | return size; | |
141 | ||
80609448 | 142 | size -= (offset & ~(BITS_PER_LONG - 1)); |
9a7f143a | 143 | offset %= BITS_PER_LONG; |
80609448 JK |
144 | |
145 | while (1) { | |
146 | if (*p == ~0UL) | |
147 | goto pass; | |
148 | ||
f96999c3 | 149 | tmp = __reverse_ulong((unsigned char *)p); |
80609448 JK |
150 | |
151 | if (offset) | |
152 | tmp |= ~0UL << (BITS_PER_LONG - offset); | |
153 | if (size < BITS_PER_LONG) | |
154 | tmp |= ~0UL >> size; | |
f96999c3 | 155 | if (tmp != ~0UL) |
80609448 JK |
156 | goto found; |
157 | pass: | |
158 | if (size <= BITS_PER_LONG) | |
159 | break; | |
9a7f143a | 160 | size -= BITS_PER_LONG; |
80609448 | 161 | offset = 0; |
f96999c3 | 162 | p++; |
9a7f143a | 163 | } |
80609448 JK |
164 | return result; |
165 | found: | |
166 | return result - size + __reverse_ffz(tmp); | |
9a7f143a CL |
167 | } |
168 | ||
4d57b86d | 169 | bool f2fs_need_SSR(struct f2fs_sb_info *sbi) |
b3a97a2a JK |
170 | { |
171 | int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); | |
172 | int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); | |
173 | int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); | |
174 | ||
b0332a0f | 175 | if (f2fs_lfs_mode(sbi)) |
b3a97a2a | 176 | return false; |
5b0e9539 | 177 | if (sbi->gc_mode == GC_URGENT) |
b3a97a2a | 178 | return true; |
4354994f DR |
179 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
180 | return true; | |
b3a97a2a JK |
181 | |
182 | return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + | |
a2a12b67 | 183 | SM_I(sbi)->min_ssr_sections + reserved_sections(sbi)); |
b3a97a2a JK |
184 | } |
185 | ||
4d57b86d | 186 | void f2fs_register_inmem_page(struct inode *inode, struct page *page) |
88b88a66 | 187 | { |
88b88a66 | 188 | struct inmem_pages *new; |
9be32d72 | 189 | |
9e4ded3f | 190 | f2fs_trace_pid(page); |
0722b101 | 191 | |
240a5915 | 192 | f2fs_set_page_private(page, (unsigned long)ATOMIC_WRITTEN_PAGE); |
decd36b6 | 193 | |
88b88a66 JK |
194 | new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); |
195 | ||
196 | /* add atomic page indices to the list */ | |
197 | new->page = page; | |
198 | INIT_LIST_HEAD(&new->list); | |
decd36b6 | 199 | |
88b88a66 | 200 | /* increase reference count with clean state */ |
88b88a66 | 201 | get_page(page); |
743b620c JK |
202 | mutex_lock(&F2FS_I(inode)->inmem_lock); |
203 | list_add_tail(&new->list, &F2FS_I(inode)->inmem_pages); | |
8dcf2ff7 | 204 | inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); |
743b620c | 205 | mutex_unlock(&F2FS_I(inode)->inmem_lock); |
8ce67cb0 JK |
206 | |
207 | trace_f2fs_register_inmem_page(page, INMEM); | |
88b88a66 JK |
208 | } |
209 | ||
28bc106b | 210 | static int __revoke_inmem_pages(struct inode *inode, |
48432984 CY |
211 | struct list_head *head, bool drop, bool recover, |
212 | bool trylock) | |
29b96b54 | 213 | { |
28bc106b | 214 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 | 215 | struct inmem_pages *cur, *tmp; |
28bc106b | 216 | int err = 0; |
29b96b54 CY |
217 | |
218 | list_for_each_entry_safe(cur, tmp, head, list) { | |
28bc106b CY |
219 | struct page *page = cur->page; |
220 | ||
221 | if (drop) | |
222 | trace_f2fs_commit_inmem_page(page, INMEM_DROP); | |
223 | ||
48432984 CY |
224 | if (trylock) { |
225 | /* | |
226 | * to avoid deadlock in between page lock and | |
227 | * inmem_lock. | |
228 | */ | |
229 | if (!trylock_page(page)) | |
230 | continue; | |
231 | } else { | |
232 | lock_page(page); | |
233 | } | |
29b96b54 | 234 | |
bae0ee7a | 235 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
e5e5732d | 236 | |
28bc106b CY |
237 | if (recover) { |
238 | struct dnode_of_data dn; | |
239 | struct node_info ni; | |
240 | ||
241 | trace_f2fs_commit_inmem_page(page, INMEM_REVOKE); | |
7f2b4e8e | 242 | retry: |
28bc106b | 243 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d CY |
244 | err = f2fs_get_dnode_of_data(&dn, page->index, |
245 | LOOKUP_NODE); | |
7f2b4e8e CY |
246 | if (err) { |
247 | if (err == -ENOMEM) { | |
5df7731f CY |
248 | congestion_wait(BLK_RW_ASYNC, |
249 | DEFAULT_IO_TIMEOUT); | |
7f2b4e8e CY |
250 | cond_resched(); |
251 | goto retry; | |
252 | } | |
28bc106b CY |
253 | err = -EAGAIN; |
254 | goto next; | |
255 | } | |
7735730d CY |
256 | |
257 | err = f2fs_get_node_info(sbi, dn.nid, &ni); | |
258 | if (err) { | |
259 | f2fs_put_dnode(&dn); | |
260 | return err; | |
261 | } | |
262 | ||
f1d2564a | 263 | if (cur->old_addr == NEW_ADDR) { |
4d57b86d | 264 | f2fs_invalidate_blocks(sbi, dn.data_blkaddr); |
f1d2564a DJ |
265 | f2fs_update_data_blkaddr(&dn, NEW_ADDR); |
266 | } else | |
267 | f2fs_replace_block(sbi, &dn, dn.data_blkaddr, | |
28bc106b CY |
268 | cur->old_addr, ni.version, true, true); |
269 | f2fs_put_dnode(&dn); | |
270 | } | |
271 | next: | |
63c52d78 | 272 | /* we don't need to invalidate this in the sccessful status */ |
2baf0781 | 273 | if (drop || recover) { |
63c52d78 | 274 | ClearPageUptodate(page); |
2baf0781 CY |
275 | clear_cold_data(page); |
276 | } | |
240a5915 | 277 | f2fs_clear_page_private(page); |
28bc106b | 278 | f2fs_put_page(page, 1); |
29b96b54 CY |
279 | |
280 | list_del(&cur->list); | |
281 | kmem_cache_free(inmem_entry_slab, cur); | |
282 | dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES); | |
283 | } | |
28bc106b | 284 | return err; |
29b96b54 CY |
285 | } |
286 | ||
4d57b86d | 287 | void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure) |
57864ae5 JK |
288 | { |
289 | struct list_head *head = &sbi->inode_list[ATOMIC_FILE]; | |
290 | struct inode *inode; | |
291 | struct f2fs_inode_info *fi; | |
677017d1 ST |
292 | unsigned int count = sbi->atomic_files; |
293 | unsigned int looped = 0; | |
57864ae5 JK |
294 | next: |
295 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
296 | if (list_empty(head)) { | |
297 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); | |
298 | return; | |
299 | } | |
300 | fi = list_first_entry(head, struct f2fs_inode_info, inmem_ilist); | |
301 | inode = igrab(&fi->vfs_inode); | |
677017d1 ST |
302 | if (inode) |
303 | list_move_tail(&fi->inmem_ilist, head); | |
57864ae5 JK |
304 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); |
305 | ||
306 | if (inode) { | |
2ef79ecb | 307 | if (gc_failure) { |
677017d1 ST |
308 | if (!fi->i_gc_failures[GC_FAILURE_ATOMIC]) |
309 | goto skip; | |
2ef79ecb | 310 | } |
2ef79ecb | 311 | set_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
4d57b86d | 312 | f2fs_drop_inmem_pages(inode); |
677017d1 | 313 | skip: |
57864ae5 JK |
314 | iput(inode); |
315 | } | |
5df7731f | 316 | congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); |
57864ae5 | 317 | cond_resched(); |
677017d1 ST |
318 | if (gc_failure) { |
319 | if (++looped >= count) | |
320 | return; | |
321 | } | |
57864ae5 JK |
322 | goto next; |
323 | } | |
324 | ||
4d57b86d | 325 | void f2fs_drop_inmem_pages(struct inode *inode) |
29b96b54 | 326 | { |
57864ae5 | 327 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
29b96b54 CY |
328 | struct f2fs_inode_info *fi = F2FS_I(inode); |
329 | ||
48432984 CY |
330 | while (!list_empty(&fi->inmem_pages)) { |
331 | mutex_lock(&fi->inmem_lock); | |
332 | __revoke_inmem_pages(inode, &fi->inmem_pages, | |
333 | true, false, true); | |
48432984 CY |
334 | mutex_unlock(&fi->inmem_lock); |
335 | } | |
5fe45743 | 336 | |
2ef79ecb | 337 | fi->i_gc_failures[GC_FAILURE_ATOMIC] = 0; |
743b620c JK |
338 | |
339 | spin_lock(&sbi->inode_lock[ATOMIC_FILE]); | |
340 | if (!list_empty(&fi->inmem_ilist)) | |
341 | list_del_init(&fi->inmem_ilist); | |
677017d1 ST |
342 | if (f2fs_is_atomic_file(inode)) { |
343 | clear_inode_flag(inode, FI_ATOMIC_FILE); | |
344 | sbi->atomic_files--; | |
345 | } | |
743b620c | 346 | spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); |
29b96b54 CY |
347 | } |
348 | ||
4d57b86d | 349 | void f2fs_drop_inmem_page(struct inode *inode, struct page *page) |
8c242db9 JK |
350 | { |
351 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
352 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
353 | struct list_head *head = &fi->inmem_pages; | |
354 | struct inmem_pages *cur = NULL; | |
355 | ||
356 | f2fs_bug_on(sbi, !IS_ATOMIC_WRITTEN_PAGE(page)); | |
357 | ||
358 | mutex_lock(&fi->inmem_lock); | |
359 | list_for_each_entry(cur, head, list) { | |
360 | if (cur->page == page) | |
361 | break; | |
362 | } | |
363 | ||
d0891e84 | 364 | f2fs_bug_on(sbi, list_empty(head) || cur->page != page); |
8c242db9 JK |
365 | list_del(&cur->list); |
366 | mutex_unlock(&fi->inmem_lock); | |
367 | ||
368 | dec_page_count(sbi, F2FS_INMEM_PAGES); | |
369 | kmem_cache_free(inmem_entry_slab, cur); | |
370 | ||
371 | ClearPageUptodate(page); | |
240a5915 | 372 | f2fs_clear_page_private(page); |
8c242db9 JK |
373 | f2fs_put_page(page, 0); |
374 | ||
375 | trace_f2fs_commit_inmem_page(page, INMEM_INVALIDATE); | |
376 | } | |
377 | ||
4d57b86d | 378 | static int __f2fs_commit_inmem_pages(struct inode *inode) |
88b88a66 JK |
379 | { |
380 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
381 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
382 | struct inmem_pages *cur, *tmp; | |
88b88a66 | 383 | struct f2fs_io_info fio = { |
05ca3632 | 384 | .sbi = sbi, |
39d787be | 385 | .ino = inode->i_ino, |
88b88a66 | 386 | .type = DATA, |
04d328de | 387 | .op = REQ_OP_WRITE, |
70fd7614 | 388 | .op_flags = REQ_SYNC | REQ_PRIO, |
b0af6d49 | 389 | .io_type = FS_DATA_IO, |
88b88a66 | 390 | }; |
cf52b27a | 391 | struct list_head revoke_list; |
bab475c5 | 392 | bool submit_bio = false; |
edb27dee | 393 | int err = 0; |
88b88a66 | 394 | |
cf52b27a CY |
395 | INIT_LIST_HEAD(&revoke_list); |
396 | ||
88b88a66 | 397 | list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { |
28bc106b CY |
398 | struct page *page = cur->page; |
399 | ||
400 | lock_page(page); | |
401 | if (page->mapping == inode->i_mapping) { | |
402 | trace_f2fs_commit_inmem_page(page, INMEM); | |
403 | ||
bae0ee7a | 404 | f2fs_wait_on_page_writeback(page, DATA, true, true); |
8d64d365 CY |
405 | |
406 | set_page_dirty(page); | |
933439c8 | 407 | if (clear_page_dirty_for_io(page)) { |
29b96b54 | 408 | inode_dec_dirty_pages(inode); |
4d57b86d | 409 | f2fs_remove_dirty_inode(inode); |
933439c8 | 410 | } |
640cc189 | 411 | retry: |
28bc106b | 412 | fio.page = page; |
e959c8f5 | 413 | fio.old_blkaddr = NULL_ADDR; |
4d978078 | 414 | fio.encrypted_page = NULL; |
cc15620b | 415 | fio.need_lock = LOCK_DONE; |
4d57b86d | 416 | err = f2fs_do_write_data_page(&fio); |
29b96b54 | 417 | if (err) { |
640cc189 | 418 | if (err == -ENOMEM) { |
5df7731f CY |
419 | congestion_wait(BLK_RW_ASYNC, |
420 | DEFAULT_IO_TIMEOUT); | |
640cc189 JK |
421 | cond_resched(); |
422 | goto retry; | |
423 | } | |
28bc106b | 424 | unlock_page(page); |
29b96b54 | 425 | break; |
70c640b1 | 426 | } |
28bc106b CY |
427 | /* record old blkaddr for revoking */ |
428 | cur->old_addr = fio.old_blkaddr; | |
bab475c5 | 429 | submit_bio = true; |
28bc106b CY |
430 | } |
431 | unlock_page(page); | |
cf52b27a | 432 | list_move_tail(&cur->list, &revoke_list); |
88b88a66 | 433 | } |
29b96b54 | 434 | |
bab475c5 CY |
435 | if (submit_bio) |
436 | f2fs_submit_merged_write_cond(sbi, inode, NULL, 0, DATA); | |
28bc106b | 437 | |
cf52b27a CY |
438 | if (err) { |
439 | /* | |
440 | * try to revoke all committed pages, but still we could fail | |
441 | * due to no memory or other reason, if that happened, EAGAIN | |
442 | * will be returned, which means in such case, transaction is | |
443 | * already not integrity, caller should use journal to do the | |
444 | * recovery or rewrite & commit last transaction. For other | |
445 | * error number, revoking was done by filesystem itself. | |
446 | */ | |
48432984 CY |
447 | err = __revoke_inmem_pages(inode, &revoke_list, |
448 | false, true, false); | |
cf52b27a CY |
449 | |
450 | /* drop all uncommitted pages */ | |
48432984 CY |
451 | __revoke_inmem_pages(inode, &fi->inmem_pages, |
452 | true, false, false); | |
cf52b27a | 453 | } else { |
48432984 CY |
454 | __revoke_inmem_pages(inode, &revoke_list, |
455 | false, false, false); | |
cf52b27a | 456 | } |
28bc106b | 457 | |
29b96b54 CY |
458 | return err; |
459 | } | |
460 | ||
4d57b86d | 461 | int f2fs_commit_inmem_pages(struct inode *inode) |
29b96b54 CY |
462 | { |
463 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
464 | struct f2fs_inode_info *fi = F2FS_I(inode); | |
28bc106b | 465 | int err; |
29b96b54 CY |
466 | |
467 | f2fs_balance_fs(sbi, true); | |
29b96b54 | 468 | |
6f8d4455 JK |
469 | down_write(&fi->i_gc_rwsem[WRITE]); |
470 | ||
471 | f2fs_lock_op(sbi); | |
5fe45743 CY |
472 | set_inode_flag(inode, FI_ATOMIC_COMMIT); |
473 | ||
29b96b54 | 474 | mutex_lock(&fi->inmem_lock); |
4d57b86d | 475 | err = __f2fs_commit_inmem_pages(inode); |
88b88a66 JK |
476 | mutex_unlock(&fi->inmem_lock); |
477 | ||
5fe45743 CY |
478 | clear_inode_flag(inode, FI_ATOMIC_COMMIT); |
479 | ||
29b96b54 | 480 | f2fs_unlock_op(sbi); |
6f8d4455 JK |
481 | up_write(&fi->i_gc_rwsem[WRITE]); |
482 | ||
edb27dee | 483 | return err; |
88b88a66 JK |
484 | } |
485 | ||
0a8165d7 | 486 | /* |
351df4b2 JK |
487 | * This function balances dirty node and dentry pages. |
488 | * In addition, it controls garbage collection. | |
489 | */ | |
2c4db1a6 | 490 | void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) |
351df4b2 | 491 | { |
55523519 | 492 | if (time_to_inject(sbi, FAULT_CHECKPOINT)) { |
c45d6002 | 493 | f2fs_show_injection_info(sbi, FAULT_CHECKPOINT); |
0f348028 | 494 | f2fs_stop_checkpoint(sbi, false); |
55523519 | 495 | } |
0f348028 | 496 | |
e589c2c4 | 497 | /* balance_fs_bg is able to be pending */ |
a7881893 | 498 | if (need && excess_cached_nats(sbi)) |
7bcd0cfa | 499 | f2fs_balance_fs_bg(sbi, false); |
e589c2c4 | 500 | |
00e09c0b | 501 | if (!f2fs_is_checkpoint_ready(sbi)) |
4354994f DR |
502 | return; |
503 | ||
351df4b2 | 504 | /* |
029cd28c JK |
505 | * We should do GC or end up with checkpoint, if there are so many dirty |
506 | * dir/node pages without enough free segments. | |
351df4b2 | 507 | */ |
7f3037a5 | 508 | if (has_not_enough_free_secs(sbi, 0, 0)) { |
fb24fea7 | 509 | down_write(&sbi->gc_lock); |
e066b83c | 510 | f2fs_gc(sbi, false, false, NULL_SEGNO); |
351df4b2 JK |
511 | } |
512 | } | |
513 | ||
7bcd0cfa | 514 | void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg) |
4660f9c0 | 515 | { |
64c74a7a CY |
516 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
517 | return; | |
518 | ||
1dcc336b | 519 | /* try to shrink extent cache when there is no enough memory */ |
4d57b86d | 520 | if (!f2fs_available_free_memory(sbi, EXTENT_CACHE)) |
554df79e | 521 | f2fs_shrink_extent_tree(sbi, EXTENT_CACHE_SHRINK_NUMBER); |
1dcc336b | 522 | |
1b38dc8e | 523 | /* check the # of cached NAT entries */ |
4d57b86d CY |
524 | if (!f2fs_available_free_memory(sbi, NAT_ENTRIES)) |
525 | f2fs_try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); | |
1b38dc8e | 526 | |
4d57b86d CY |
527 | if (!f2fs_available_free_memory(sbi, FREE_NIDS)) |
528 | f2fs_try_to_free_nids(sbi, MAX_FREE_NIDS); | |
ad4edb83 | 529 | else |
4d57b86d | 530 | f2fs_build_free_nids(sbi, false, false); |
31696580 | 531 | |
a7d10cf3 | 532 | if (!is_idle(sbi, REQ_TIME) && |
fd8c8caf | 533 | (!excess_dirty_nats(sbi) && !excess_dirty_nodes(sbi))) |
f455c8a5 | 534 | return; |
31696580 | 535 | |
1b38dc8e | 536 | /* checkpoint is the only way to shrink partial cached entries */ |
4d57b86d CY |
537 | if (!f2fs_available_free_memory(sbi, NAT_ENTRIES) || |
538 | !f2fs_available_free_memory(sbi, INO_ENTRIES) || | |
7d768d2c CY |
539 | excess_prefree_segs(sbi) || |
540 | excess_dirty_nats(sbi) || | |
fd8c8caf | 541 | excess_dirty_nodes(sbi) || |
f455c8a5 | 542 | f2fs_time_over(sbi, CP_TIME)) { |
7bcd0cfa | 543 | if (test_opt(sbi, DATA_FLUSH) && from_bg) { |
e9f5b8b8 CY |
544 | struct blk_plug plug; |
545 | ||
040d2bb3 CY |
546 | mutex_lock(&sbi->flush_lock); |
547 | ||
e9f5b8b8 | 548 | blk_start_plug(&plug); |
4d57b86d | 549 | f2fs_sync_dirty_inodes(sbi, FILE_INODE); |
e9f5b8b8 | 550 | blk_finish_plug(&plug); |
040d2bb3 CY |
551 | |
552 | mutex_unlock(&sbi->flush_lock); | |
e9f5b8b8 | 553 | } |
4660f9c0 | 554 | f2fs_sync_fs(sbi->sb, true); |
42190d2a | 555 | stat_inc_bg_cp_count(sbi->stat_info); |
36b35a0d | 556 | } |
4660f9c0 JK |
557 | } |
558 | ||
20fda56b KM |
559 | static int __submit_flush_wait(struct f2fs_sb_info *sbi, |
560 | struct block_device *bdev) | |
3c62be17 | 561 | { |
dc37910d | 562 | struct bio *bio; |
3c62be17 JK |
563 | int ret; |
564 | ||
dc37910d CY |
565 | bio = f2fs_bio_alloc(sbi, 0, false); |
566 | if (!bio) | |
567 | return -ENOMEM; | |
568 | ||
3adc5fcb | 569 | bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; |
74d46992 | 570 | bio_set_dev(bio, bdev); |
3c62be17 JK |
571 | ret = submit_bio_wait(bio); |
572 | bio_put(bio); | |
20fda56b KM |
573 | |
574 | trace_f2fs_issue_flush(bdev, test_opt(sbi, NOBARRIER), | |
575 | test_opt(sbi, FLUSH_MERGE), ret); | |
3c62be17 JK |
576 | return ret; |
577 | } | |
578 | ||
39d787be | 579 | static int submit_flush_wait(struct f2fs_sb_info *sbi, nid_t ino) |
3c62be17 | 580 | { |
39d787be | 581 | int ret = 0; |
3c62be17 JK |
582 | int i; |
583 | ||
0916878d | 584 | if (!f2fs_is_multi_device(sbi)) |
39d787be | 585 | return __submit_flush_wait(sbi, sbi->sb->s_bdev); |
20fda56b | 586 | |
39d787be | 587 | for (i = 0; i < sbi->s_ndevs; i++) { |
4d57b86d | 588 | if (!f2fs_is_dirty_device(sbi, ino, i, FLUSH_INO)) |
39d787be | 589 | continue; |
20fda56b KM |
590 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); |
591 | if (ret) | |
592 | break; | |
3c62be17 JK |
593 | } |
594 | return ret; | |
595 | } | |
596 | ||
2163d198 | 597 | static int issue_flush_thread(void *data) |
6b4afdd7 JK |
598 | { |
599 | struct f2fs_sb_info *sbi = data; | |
b01a9201 | 600 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
a688b9d9 | 601 | wait_queue_head_t *q = &fcc->flush_wait_queue; |
6b4afdd7 JK |
602 | repeat: |
603 | if (kthread_should_stop()) | |
604 | return 0; | |
605 | ||
dc6febb6 CY |
606 | sb_start_intwrite(sbi->sb); |
607 | ||
721bd4d5 | 608 | if (!llist_empty(&fcc->issue_list)) { |
6b4afdd7 JK |
609 | struct flush_cmd *cmd, *next; |
610 | int ret; | |
611 | ||
721bd4d5 GZ |
612 | fcc->dispatch_list = llist_del_all(&fcc->issue_list); |
613 | fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); | |
614 | ||
39d787be CY |
615 | cmd = llist_entry(fcc->dispatch_list, struct flush_cmd, llnode); |
616 | ||
617 | ret = submit_flush_wait(sbi, cmd->ino); | |
8b8dd65f CY |
618 | atomic_inc(&fcc->issued_flush); |
619 | ||
721bd4d5 GZ |
620 | llist_for_each_entry_safe(cmd, next, |
621 | fcc->dispatch_list, llnode) { | |
6b4afdd7 | 622 | cmd->ret = ret; |
6b4afdd7 JK |
623 | complete(&cmd->wait); |
624 | } | |
a688b9d9 | 625 | fcc->dispatch_list = NULL; |
6b4afdd7 JK |
626 | } |
627 | ||
dc6febb6 CY |
628 | sb_end_intwrite(sbi->sb); |
629 | ||
a688b9d9 | 630 | wait_event_interruptible(*q, |
721bd4d5 | 631 | kthread_should_stop() || !llist_empty(&fcc->issue_list)); |
6b4afdd7 JK |
632 | goto repeat; |
633 | } | |
634 | ||
39d787be | 635 | int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino) |
6b4afdd7 | 636 | { |
b01a9201 | 637 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
adf8d90b | 638 | struct flush_cmd cmd; |
8b8dd65f | 639 | int ret; |
6b4afdd7 | 640 | |
0f7b2abd JK |
641 | if (test_opt(sbi, NOBARRIER)) |
642 | return 0; | |
643 | ||
8b8dd65f | 644 | if (!test_opt(sbi, FLUSH_MERGE)) { |
72691af6 | 645 | atomic_inc(&fcc->queued_flush); |
39d787be | 646 | ret = submit_flush_wait(sbi, ino); |
72691af6 | 647 | atomic_dec(&fcc->queued_flush); |
8b8dd65f CY |
648 | atomic_inc(&fcc->issued_flush); |
649 | return ret; | |
650 | } | |
740432f8 | 651 | |
0916878d DLM |
652 | if (atomic_inc_return(&fcc->queued_flush) == 1 || |
653 | f2fs_is_multi_device(sbi)) { | |
39d787be | 654 | ret = submit_flush_wait(sbi, ino); |
72691af6 | 655 | atomic_dec(&fcc->queued_flush); |
8b8dd65f CY |
656 | |
657 | atomic_inc(&fcc->issued_flush); | |
740432f8 JK |
658 | return ret; |
659 | } | |
6b4afdd7 | 660 | |
39d787be | 661 | cmd.ino = ino; |
adf8d90b | 662 | init_completion(&cmd.wait); |
6b4afdd7 | 663 | |
721bd4d5 | 664 | llist_add(&cmd.llnode, &fcc->issue_list); |
6b4afdd7 | 665 | |
6f890df0 CY |
666 | /* update issue_list before we wake up issue_flush thread */ |
667 | smp_mb(); | |
668 | ||
669 | if (waitqueue_active(&fcc->flush_wait_queue)) | |
a688b9d9 | 670 | wake_up(&fcc->flush_wait_queue); |
6b4afdd7 | 671 | |
5eba8c5d JK |
672 | if (fcc->f2fs_issue_flush) { |
673 | wait_for_completion(&cmd.wait); | |
72691af6 | 674 | atomic_dec(&fcc->queued_flush); |
5eba8c5d | 675 | } else { |
d3238691 CY |
676 | struct llist_node *list; |
677 | ||
678 | list = llist_del_all(&fcc->issue_list); | |
679 | if (!list) { | |
680 | wait_for_completion(&cmd.wait); | |
72691af6 | 681 | atomic_dec(&fcc->queued_flush); |
d3238691 CY |
682 | } else { |
683 | struct flush_cmd *tmp, *next; | |
684 | ||
39d787be | 685 | ret = submit_flush_wait(sbi, ino); |
d3238691 CY |
686 | |
687 | llist_for_each_entry_safe(tmp, next, list, llnode) { | |
688 | if (tmp == &cmd) { | |
689 | cmd.ret = ret; | |
72691af6 | 690 | atomic_dec(&fcc->queued_flush); |
d3238691 CY |
691 | continue; |
692 | } | |
693 | tmp->ret = ret; | |
694 | complete(&tmp->wait); | |
695 | } | |
696 | } | |
5eba8c5d | 697 | } |
adf8d90b CY |
698 | |
699 | return cmd.ret; | |
6b4afdd7 JK |
700 | } |
701 | ||
4d57b86d | 702 | int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi) |
2163d198 GZ |
703 | { |
704 | dev_t dev = sbi->sb->s_bdev->bd_dev; | |
705 | struct flush_cmd_control *fcc; | |
706 | int err = 0; | |
707 | ||
b01a9201 JK |
708 | if (SM_I(sbi)->fcc_info) { |
709 | fcc = SM_I(sbi)->fcc_info; | |
d871cd04 YS |
710 | if (fcc->f2fs_issue_flush) |
711 | return err; | |
5eba8c5d JK |
712 | goto init_thread; |
713 | } | |
714 | ||
acbf054d | 715 | fcc = f2fs_kzalloc(sbi, sizeof(struct flush_cmd_control), GFP_KERNEL); |
2163d198 GZ |
716 | if (!fcc) |
717 | return -ENOMEM; | |
8b8dd65f | 718 | atomic_set(&fcc->issued_flush, 0); |
72691af6 | 719 | atomic_set(&fcc->queued_flush, 0); |
2163d198 | 720 | init_waitqueue_head(&fcc->flush_wait_queue); |
721bd4d5 | 721 | init_llist_head(&fcc->issue_list); |
b01a9201 | 722 | SM_I(sbi)->fcc_info = fcc; |
d4fdf8ba YH |
723 | if (!test_opt(sbi, FLUSH_MERGE)) |
724 | return err; | |
725 | ||
5eba8c5d | 726 | init_thread: |
2163d198 GZ |
727 | fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, |
728 | "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); | |
729 | if (IS_ERR(fcc->f2fs_issue_flush)) { | |
730 | err = PTR_ERR(fcc->f2fs_issue_flush); | |
5222595d | 731 | kvfree(fcc); |
b01a9201 | 732 | SM_I(sbi)->fcc_info = NULL; |
2163d198 GZ |
733 | return err; |
734 | } | |
2163d198 GZ |
735 | |
736 | return err; | |
737 | } | |
738 | ||
4d57b86d | 739 | void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free) |
2163d198 | 740 | { |
b01a9201 | 741 | struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; |
2163d198 | 742 | |
5eba8c5d JK |
743 | if (fcc && fcc->f2fs_issue_flush) { |
744 | struct task_struct *flush_thread = fcc->f2fs_issue_flush; | |
745 | ||
746 | fcc->f2fs_issue_flush = NULL; | |
747 | kthread_stop(flush_thread); | |
748 | } | |
749 | if (free) { | |
5222595d | 750 | kvfree(fcc); |
b01a9201 | 751 | SM_I(sbi)->fcc_info = NULL; |
5eba8c5d | 752 | } |
2163d198 GZ |
753 | } |
754 | ||
1228b482 CY |
755 | int f2fs_flush_device_cache(struct f2fs_sb_info *sbi) |
756 | { | |
757 | int ret = 0, i; | |
758 | ||
0916878d | 759 | if (!f2fs_is_multi_device(sbi)) |
1228b482 CY |
760 | return 0; |
761 | ||
762 | for (i = 1; i < sbi->s_ndevs; i++) { | |
763 | if (!f2fs_test_bit(i, (char *)&sbi->dirty_device)) | |
764 | continue; | |
765 | ret = __submit_flush_wait(sbi, FDEV(i).bdev); | |
766 | if (ret) | |
767 | break; | |
768 | ||
769 | spin_lock(&sbi->dev_lock); | |
770 | f2fs_clear_bit(i, (char *)&sbi->dirty_device); | |
771 | spin_unlock(&sbi->dev_lock); | |
772 | } | |
773 | ||
774 | return ret; | |
775 | } | |
776 | ||
351df4b2 JK |
777 | static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, |
778 | enum dirty_type dirty_type) | |
779 | { | |
780 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
781 | ||
782 | /* need not be added */ | |
783 | if (IS_CURSEG(sbi, segno)) | |
784 | return; | |
785 | ||
786 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
787 | dirty_i->nr_dirty[dirty_type]++; | |
788 | ||
789 | if (dirty_type == DIRTY) { | |
790 | struct seg_entry *sentry = get_seg_entry(sbi, segno); | |
4625d6aa | 791 | enum dirty_type t = sentry->type; |
b2f2c390 | 792 | |
ec325b52 JK |
793 | if (unlikely(t >= DIRTY)) { |
794 | f2fs_bug_on(sbi, 1); | |
795 | return; | |
796 | } | |
4625d6aa CL |
797 | if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) |
798 | dirty_i->nr_dirty[t]++; | |
351df4b2 JK |
799 | } |
800 | } | |
801 | ||
802 | static void __remove_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, | |
803 | enum dirty_type dirty_type) | |
804 | { | |
805 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
806 | ||
807 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[dirty_type])) | |
808 | dirty_i->nr_dirty[dirty_type]--; | |
809 | ||
810 | if (dirty_type == DIRTY) { | |
4625d6aa CL |
811 | struct seg_entry *sentry = get_seg_entry(sbi, segno); |
812 | enum dirty_type t = sentry->type; | |
813 | ||
814 | if (test_and_clear_bit(segno, dirty_i->dirty_segmap[t])) | |
815 | dirty_i->nr_dirty[t]--; | |
b2f2c390 | 816 | |
bbf9f7d9 | 817 | if (get_valid_blocks(sbi, segno, true) == 0) { |
4ddb1a4d | 818 | clear_bit(GET_SEC_FROM_SEG(sbi, segno), |
5ec4e49f | 819 | dirty_i->victim_secmap); |
bbf9f7d9 ST |
820 | #ifdef CONFIG_F2FS_CHECK_FS |
821 | clear_bit(segno, SIT_I(sbi)->invalid_segmap); | |
822 | #endif | |
823 | } | |
351df4b2 JK |
824 | } |
825 | } | |
826 | ||
0a8165d7 | 827 | /* |
351df4b2 JK |
828 | * Should not occur error such as -ENOMEM. |
829 | * Adding dirty entry into seglist is not critical operation. | |
830 | * If a given segment is one of current working segments, it won't be added. | |
831 | */ | |
8d8451af | 832 | static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
833 | { |
834 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4354994f | 835 | unsigned short valid_blocks, ckpt_valid_blocks; |
351df4b2 JK |
836 | |
837 | if (segno == NULL_SEGNO || IS_CURSEG(sbi, segno)) | |
838 | return; | |
839 | ||
840 | mutex_lock(&dirty_i->seglist_lock); | |
841 | ||
302bd348 | 842 | valid_blocks = get_valid_blocks(sbi, segno, false); |
4354994f | 843 | ckpt_valid_blocks = get_ckpt_valid_blocks(sbi, segno); |
351df4b2 | 844 | |
4354994f DR |
845 | if (valid_blocks == 0 && (!is_sbi_flag_set(sbi, SBI_CP_DISABLED) || |
846 | ckpt_valid_blocks == sbi->blocks_per_seg)) { | |
351df4b2 JK |
847 | __locate_dirty_segment(sbi, segno, PRE); |
848 | __remove_dirty_segment(sbi, segno, DIRTY); | |
849 | } else if (valid_blocks < sbi->blocks_per_seg) { | |
850 | __locate_dirty_segment(sbi, segno, DIRTY); | |
851 | } else { | |
852 | /* Recovery routine with SSR needs this */ | |
853 | __remove_dirty_segment(sbi, segno, DIRTY); | |
854 | } | |
855 | ||
856 | mutex_unlock(&dirty_i->seglist_lock); | |
351df4b2 JK |
857 | } |
858 | ||
4354994f DR |
859 | /* This moves currently empty dirty blocks to prefree. Must hold seglist_lock */ |
860 | void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi) | |
861 | { | |
862 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
863 | unsigned int segno; | |
864 | ||
865 | mutex_lock(&dirty_i->seglist_lock); | |
866 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
867 | if (get_valid_blocks(sbi, segno, false)) | |
868 | continue; | |
869 | if (IS_CURSEG(sbi, segno)) | |
870 | continue; | |
871 | __locate_dirty_segment(sbi, segno, PRE); | |
872 | __remove_dirty_segment(sbi, segno, DIRTY); | |
873 | } | |
874 | mutex_unlock(&dirty_i->seglist_lock); | |
875 | } | |
876 | ||
4d3aed70 | 877 | block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi) |
4354994f | 878 | { |
ae4ad7ea DR |
879 | int ovp_hole_segs = |
880 | (overprovision_segments(sbi) - reserved_segments(sbi)); | |
881 | block_t ovp_holes = ovp_hole_segs << sbi->log_blocks_per_seg; | |
4d3aed70 | 882 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
4354994f | 883 | block_t holes[2] = {0, 0}; /* DATA and NODE */ |
4d3aed70 | 884 | block_t unusable; |
4354994f DR |
885 | struct seg_entry *se; |
886 | unsigned int segno; | |
887 | ||
888 | mutex_lock(&dirty_i->seglist_lock); | |
889 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
890 | se = get_seg_entry(sbi, segno); | |
891 | if (IS_NODESEG(se->type)) | |
892 | holes[NODE] += sbi->blocks_per_seg - se->valid_blocks; | |
893 | else | |
894 | holes[DATA] += sbi->blocks_per_seg - se->valid_blocks; | |
895 | } | |
896 | mutex_unlock(&dirty_i->seglist_lock); | |
897 | ||
4d3aed70 DR |
898 | unusable = holes[DATA] > holes[NODE] ? holes[DATA] : holes[NODE]; |
899 | if (unusable > ovp_holes) | |
900 | return unusable - ovp_holes; | |
901 | return 0; | |
902 | } | |
903 | ||
904 | int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable) | |
905 | { | |
906 | int ovp_hole_segs = | |
907 | (overprovision_segments(sbi) - reserved_segments(sbi)); | |
908 | if (unusable > F2FS_OPTION(sbi).unusable_cap) | |
4354994f | 909 | return -EAGAIN; |
db610a64 | 910 | if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK) && |
ae4ad7ea | 911 | dirty_segments(sbi) > ovp_hole_segs) |
db610a64 | 912 | return -EAGAIN; |
4354994f DR |
913 | return 0; |
914 | } | |
915 | ||
916 | /* This is only used by SBI_CP_DISABLED */ | |
917 | static unsigned int get_free_segment(struct f2fs_sb_info *sbi) | |
918 | { | |
919 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
920 | unsigned int segno = 0; | |
921 | ||
922 | mutex_lock(&dirty_i->seglist_lock); | |
923 | for_each_set_bit(segno, dirty_i->dirty_segmap[DIRTY], MAIN_SEGS(sbi)) { | |
924 | if (get_valid_blocks(sbi, segno, false)) | |
925 | continue; | |
926 | if (get_ckpt_valid_blocks(sbi, segno)) | |
927 | continue; | |
928 | mutex_unlock(&dirty_i->seglist_lock); | |
929 | return segno; | |
930 | } | |
931 | mutex_unlock(&dirty_i->seglist_lock); | |
932 | return NULL_SEGNO; | |
933 | } | |
934 | ||
004b6862 | 935 | static struct discard_cmd *__create_discard_cmd(struct f2fs_sb_info *sbi, |
c81abe34 JK |
936 | struct block_device *bdev, block_t lstart, |
937 | block_t start, block_t len) | |
275b66b0 | 938 | { |
0b54fb84 | 939 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
ba48a33e | 940 | struct list_head *pend_list; |
b01a9201 | 941 | struct discard_cmd *dc; |
275b66b0 | 942 | |
ba48a33e CY |
943 | f2fs_bug_on(sbi, !len); |
944 | ||
945 | pend_list = &dcc->pend_list[plist_idx(len)]; | |
946 | ||
b01a9201 JK |
947 | dc = f2fs_kmem_cache_alloc(discard_cmd_slab, GFP_NOFS); |
948 | INIT_LIST_HEAD(&dc->list); | |
c81abe34 | 949 | dc->bdev = bdev; |
b01a9201 | 950 | dc->lstart = lstart; |
c81abe34 | 951 | dc->start = start; |
b01a9201 | 952 | dc->len = len; |
ec9895ad | 953 | dc->ref = 0; |
15469963 | 954 | dc->state = D_PREP; |
72691af6 | 955 | dc->queued = 0; |
c81abe34 | 956 | dc->error = 0; |
b01a9201 | 957 | init_completion(&dc->wait); |
22d375dd | 958 | list_add_tail(&dc->list, pend_list); |
35ec7d57 CY |
959 | spin_lock_init(&dc->lock); |
960 | dc->bio_ref = 0; | |
5f32366a | 961 | atomic_inc(&dcc->discard_cmd_cnt); |
d84d1cbd | 962 | dcc->undiscard_blks += len; |
004b6862 CY |
963 | |
964 | return dc; | |
965 | } | |
966 | ||
967 | static struct discard_cmd *__attach_discard_cmd(struct f2fs_sb_info *sbi, | |
968 | struct block_device *bdev, block_t lstart, | |
969 | block_t start, block_t len, | |
4dada3fd CY |
970 | struct rb_node *parent, struct rb_node **p, |
971 | bool leftmost) | |
004b6862 CY |
972 | { |
973 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
974 | struct discard_cmd *dc; | |
975 | ||
976 | dc = __create_discard_cmd(sbi, bdev, lstart, start, len); | |
977 | ||
978 | rb_link_node(&dc->rb_node, parent, p); | |
4dada3fd | 979 | rb_insert_color_cached(&dc->rb_node, &dcc->root, leftmost); |
004b6862 CY |
980 | |
981 | return dc; | |
15469963 JK |
982 | } |
983 | ||
004b6862 CY |
984 | static void __detach_discard_cmd(struct discard_cmd_control *dcc, |
985 | struct discard_cmd *dc) | |
15469963 | 986 | { |
dcc9165d | 987 | if (dc->state == D_DONE) |
72691af6 | 988 | atomic_sub(dc->queued, &dcc->queued_discard); |
004b6862 CY |
989 | |
990 | list_del(&dc->list); | |
4dada3fd | 991 | rb_erase_cached(&dc->rb_node, &dcc->root); |
d84d1cbd | 992 | dcc->undiscard_blks -= dc->len; |
004b6862 CY |
993 | |
994 | kmem_cache_free(discard_cmd_slab, dc); | |
995 | ||
996 | atomic_dec(&dcc->discard_cmd_cnt); | |
997 | } | |
998 | ||
999 | static void __remove_discard_cmd(struct f2fs_sb_info *sbi, | |
1000 | struct discard_cmd *dc) | |
1001 | { | |
1002 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
35ec7d57 | 1003 | unsigned long flags; |
dcc9165d | 1004 | |
2ec6f2ef CY |
1005 | trace_f2fs_remove_discard(dc->bdev, dc->start, dc->len); |
1006 | ||
35ec7d57 CY |
1007 | spin_lock_irqsave(&dc->lock, flags); |
1008 | if (dc->bio_ref) { | |
1009 | spin_unlock_irqrestore(&dc->lock, flags); | |
1010 | return; | |
1011 | } | |
1012 | spin_unlock_irqrestore(&dc->lock, flags); | |
1013 | ||
d9703d90 CY |
1014 | f2fs_bug_on(sbi, dc->ref); |
1015 | ||
c81abe34 JK |
1016 | if (dc->error == -EOPNOTSUPP) |
1017 | dc->error = 0; | |
15469963 | 1018 | |
c81abe34 | 1019 | if (dc->error) |
22d7ea13 | 1020 | printk_ratelimited( |
c45d6002 CY |
1021 | "%sF2FS-fs (%s): Issue discard(%u, %u, %u) failed, ret: %d", |
1022 | KERN_INFO, sbi->sb->s_id, | |
1023 | dc->lstart, dc->start, dc->len, dc->error); | |
004b6862 | 1024 | __detach_discard_cmd(dcc, dc); |
275b66b0 CY |
1025 | } |
1026 | ||
c81abe34 JK |
1027 | static void f2fs_submit_discard_endio(struct bio *bio) |
1028 | { | |
1029 | struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; | |
35ec7d57 | 1030 | unsigned long flags; |
c81abe34 | 1031 | |
4e4cbee9 | 1032 | dc->error = blk_status_to_errno(bio->bi_status); |
35ec7d57 CY |
1033 | |
1034 | spin_lock_irqsave(&dc->lock, flags); | |
1035 | dc->bio_ref--; | |
1036 | if (!dc->bio_ref && dc->state == D_SUBMIT) { | |
1037 | dc->state = D_DONE; | |
1038 | complete_all(&dc->wait); | |
1039 | } | |
1040 | spin_unlock_irqrestore(&dc->lock, flags); | |
c81abe34 JK |
1041 | bio_put(bio); |
1042 | } | |
1043 | ||
94b1e10e | 1044 | static void __check_sit_bitmap(struct f2fs_sb_info *sbi, |
6915ea9d CY |
1045 | block_t start, block_t end) |
1046 | { | |
1047 | #ifdef CONFIG_F2FS_CHECK_FS | |
1048 | struct seg_entry *sentry; | |
1049 | unsigned int segno; | |
1050 | block_t blk = start; | |
1051 | unsigned long offset, size, max_blocks = sbi->blocks_per_seg; | |
1052 | unsigned long *map; | |
1053 | ||
1054 | while (blk < end) { | |
1055 | segno = GET_SEGNO(sbi, blk); | |
1056 | sentry = get_seg_entry(sbi, segno); | |
1057 | offset = GET_BLKOFF_FROM_SEG0(sbi, blk); | |
1058 | ||
008396e1 YS |
1059 | if (end < START_BLOCK(sbi, segno + 1)) |
1060 | size = GET_BLKOFF_FROM_SEG0(sbi, end); | |
1061 | else | |
1062 | size = max_blocks; | |
6915ea9d CY |
1063 | map = (unsigned long *)(sentry->cur_valid_map); |
1064 | offset = __find_rev_next_bit(map, size, offset); | |
1065 | f2fs_bug_on(sbi, offset != size); | |
008396e1 | 1066 | blk = START_BLOCK(sbi, segno + 1); |
6915ea9d CY |
1067 | } |
1068 | #endif | |
1069 | } | |
1070 | ||
8bb4f253 JK |
1071 | static void __init_discard_policy(struct f2fs_sb_info *sbi, |
1072 | struct discard_policy *dpolicy, | |
1073 | int discard_type, unsigned int granularity) | |
1074 | { | |
1075 | /* common policy */ | |
1076 | dpolicy->type = discard_type; | |
1077 | dpolicy->sync = true; | |
20ee4382 | 1078 | dpolicy->ordered = false; |
8bb4f253 JK |
1079 | dpolicy->granularity = granularity; |
1080 | ||
1081 | dpolicy->max_requests = DEF_MAX_DISCARD_REQUEST; | |
1082 | dpolicy->io_aware_gran = MAX_PLIST_NUM; | |
6ce48b0c | 1083 | dpolicy->timeout = false; |
8bb4f253 JK |
1084 | |
1085 | if (discard_type == DPOLICY_BG) { | |
1086 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
f9d1dced | 1087 | dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; |
8bb4f253 JK |
1088 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; |
1089 | dpolicy->io_aware = true; | |
cba60849 | 1090 | dpolicy->sync = false; |
20ee4382 | 1091 | dpolicy->ordered = true; |
8bb4f253 JK |
1092 | if (utilization(sbi) > DEF_DISCARD_URGENT_UTIL) { |
1093 | dpolicy->granularity = 1; | |
1094 | dpolicy->max_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
1095 | } | |
1096 | } else if (discard_type == DPOLICY_FORCE) { | |
1097 | dpolicy->min_interval = DEF_MIN_DISCARD_ISSUE_TIME; | |
f9d1dced | 1098 | dpolicy->mid_interval = DEF_MID_DISCARD_ISSUE_TIME; |
8bb4f253 JK |
1099 | dpolicy->max_interval = DEF_MAX_DISCARD_ISSUE_TIME; |
1100 | dpolicy->io_aware = false; | |
1101 | } else if (discard_type == DPOLICY_FSTRIM) { | |
1102 | dpolicy->io_aware = false; | |
1103 | } else if (discard_type == DPOLICY_UMOUNT) { | |
241b493d | 1104 | dpolicy->max_requests = UINT_MAX; |
8bb4f253 | 1105 | dpolicy->io_aware = false; |
b8623253 JK |
1106 | /* we need to issue all to keep CP_TRIMMED_FLAG */ |
1107 | dpolicy->granularity = 1; | |
6ce48b0c | 1108 | dpolicy->timeout = true; |
8bb4f253 JK |
1109 | } |
1110 | } | |
1111 | ||
35ec7d57 CY |
1112 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1113 | struct block_device *bdev, block_t lstart, | |
1114 | block_t start, block_t len); | |
c81abe34 | 1115 | /* this function is copied from blkdev_issue_discard from block/blk-lib.c */ |
6b9cb124 | 1116 | static int __submit_discard_cmd(struct f2fs_sb_info *sbi, |
78997b56 | 1117 | struct discard_policy *dpolicy, |
35ec7d57 CY |
1118 | struct discard_cmd *dc, |
1119 | unsigned int *issued) | |
c81abe34 | 1120 | { |
35ec7d57 CY |
1121 | struct block_device *bdev = dc->bdev; |
1122 | struct request_queue *q = bdev_get_queue(bdev); | |
1123 | unsigned int max_discard_blocks = | |
1124 | SECTOR_TO_BLOCK(q->limits.max_discard_sectors); | |
c81abe34 | 1125 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
78997b56 CY |
1126 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1127 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
78997b56 | 1128 | int flag = dpolicy->sync ? REQ_SYNC : 0; |
35ec7d57 CY |
1129 | block_t lstart, start, len, total_len; |
1130 | int err = 0; | |
c81abe34 JK |
1131 | |
1132 | if (dc->state != D_PREP) | |
6b9cb124 | 1133 | return 0; |
c81abe34 | 1134 | |
d6184774 | 1135 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
6b9cb124 | 1136 | return 0; |
d6184774 | 1137 | |
35ec7d57 CY |
1138 | trace_f2fs_issue_discard(bdev, dc->start, dc->len); |
1139 | ||
1140 | lstart = dc->lstart; | |
1141 | start = dc->start; | |
1142 | len = dc->len; | |
1143 | total_len = len; | |
1144 | ||
1145 | dc->len = 0; | |
1146 | ||
1147 | while (total_len && *issued < dpolicy->max_requests && !err) { | |
1148 | struct bio *bio = NULL; | |
1149 | unsigned long flags; | |
1150 | bool last = true; | |
1151 | ||
1152 | if (len > max_discard_blocks) { | |
1153 | len = max_discard_blocks; | |
1154 | last = false; | |
1155 | } | |
1156 | ||
1157 | (*issued)++; | |
1158 | if (*issued == dpolicy->max_requests) | |
1159 | last = true; | |
1160 | ||
1161 | dc->len += len; | |
1162 | ||
b83dcfe6 | 1163 | if (time_to_inject(sbi, FAULT_DISCARD)) { |
c45d6002 | 1164 | f2fs_show_injection_info(sbi, FAULT_DISCARD); |
b83dcfe6 CY |
1165 | err = -EIO; |
1166 | goto submit; | |
1167 | } | |
35ec7d57 CY |
1168 | err = __blkdev_issue_discard(bdev, |
1169 | SECTOR_FROM_BLOCK(start), | |
1170 | SECTOR_FROM_BLOCK(len), | |
1171 | GFP_NOFS, 0, &bio); | |
b83dcfe6 | 1172 | submit: |
6b9cb124 | 1173 | if (err) { |
35ec7d57 | 1174 | spin_lock_irqsave(&dc->lock, flags); |
6b9cb124 | 1175 | if (dc->state == D_PARTIAL) |
35ec7d57 | 1176 | dc->state = D_SUBMIT; |
35ec7d57 CY |
1177 | spin_unlock_irqrestore(&dc->lock, flags); |
1178 | ||
6b9cb124 CY |
1179 | break; |
1180 | } | |
35ec7d57 | 1181 | |
6b9cb124 | 1182 | f2fs_bug_on(sbi, !bio); |
35ec7d57 | 1183 | |
6b9cb124 CY |
1184 | /* |
1185 | * should keep before submission to avoid D_DONE | |
1186 | * right away | |
1187 | */ | |
1188 | spin_lock_irqsave(&dc->lock, flags); | |
1189 | if (last) | |
1190 | dc->state = D_SUBMIT; | |
1191 | else | |
1192 | dc->state = D_PARTIAL; | |
1193 | dc->bio_ref++; | |
1194 | spin_unlock_irqrestore(&dc->lock, flags); | |
35ec7d57 | 1195 | |
72691af6 JK |
1196 | atomic_inc(&dcc->queued_discard); |
1197 | dc->queued++; | |
6b9cb124 | 1198 | list_move_tail(&dc->list, wait_list); |
b0af6d49 | 1199 | |
6b9cb124 | 1200 | /* sanity check on discard range */ |
9249dded | 1201 | __check_sit_bitmap(sbi, lstart, lstart + len); |
35ec7d57 | 1202 | |
6b9cb124 CY |
1203 | bio->bi_private = dc; |
1204 | bio->bi_end_io = f2fs_submit_discard_endio; | |
1205 | bio->bi_opf |= flag; | |
1206 | submit_bio(bio); | |
1207 | ||
1208 | atomic_inc(&dcc->issued_discard); | |
1209 | ||
1210 | f2fs_update_iostat(sbi, FS_DISCARD, 1); | |
35ec7d57 CY |
1211 | |
1212 | lstart += len; | |
1213 | start += len; | |
1214 | total_len -= len; | |
1215 | len = total_len; | |
c81abe34 | 1216 | } |
35ec7d57 | 1217 | |
6b9cb124 | 1218 | if (!err && len) |
35ec7d57 | 1219 | __update_discard_tree_range(sbi, bdev, lstart, start, len); |
6b9cb124 | 1220 | return err; |
c81abe34 JK |
1221 | } |
1222 | ||
004b6862 CY |
1223 | static struct discard_cmd *__insert_discard_tree(struct f2fs_sb_info *sbi, |
1224 | struct block_device *bdev, block_t lstart, | |
1225 | block_t start, block_t len, | |
1226 | struct rb_node **insert_p, | |
1227 | struct rb_node *insert_parent) | |
c81abe34 | 1228 | { |
004b6862 | 1229 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
dca6951f | 1230 | struct rb_node **p; |
004b6862 CY |
1231 | struct rb_node *parent = NULL; |
1232 | struct discard_cmd *dc = NULL; | |
4dada3fd | 1233 | bool leftmost = true; |
004b6862 CY |
1234 | |
1235 | if (insert_p && insert_parent) { | |
1236 | parent = insert_parent; | |
1237 | p = insert_p; | |
1238 | goto do_insert; | |
1239 | } | |
c81abe34 | 1240 | |
4dada3fd CY |
1241 | p = f2fs_lookup_rb_tree_for_insert(sbi, &dcc->root, &parent, |
1242 | lstart, &leftmost); | |
004b6862 | 1243 | do_insert: |
4dada3fd CY |
1244 | dc = __attach_discard_cmd(sbi, bdev, lstart, start, len, parent, |
1245 | p, leftmost); | |
004b6862 CY |
1246 | if (!dc) |
1247 | return NULL; | |
c81abe34 | 1248 | |
004b6862 | 1249 | return dc; |
c81abe34 JK |
1250 | } |
1251 | ||
ba48a33e CY |
1252 | static void __relocate_discard_cmd(struct discard_cmd_control *dcc, |
1253 | struct discard_cmd *dc) | |
1254 | { | |
1255 | list_move_tail(&dc->list, &dcc->pend_list[plist_idx(dc->len)]); | |
1256 | } | |
1257 | ||
3d6a650f YH |
1258 | static void __punch_discard_cmd(struct f2fs_sb_info *sbi, |
1259 | struct discard_cmd *dc, block_t blkaddr) | |
1260 | { | |
ba48a33e | 1261 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1262 | struct discard_info di = dc->di; |
1263 | bool modified = false; | |
3d6a650f | 1264 | |
004b6862 | 1265 | if (dc->state == D_DONE || dc->len == 1) { |
3d6a650f YH |
1266 | __remove_discard_cmd(sbi, dc); |
1267 | return; | |
1268 | } | |
1269 | ||
d84d1cbd CY |
1270 | dcc->undiscard_blks -= di.len; |
1271 | ||
004b6862 | 1272 | if (blkaddr > di.lstart) { |
3d6a650f | 1273 | dc->len = blkaddr - dc->lstart; |
d84d1cbd | 1274 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1275 | __relocate_discard_cmd(dcc, dc); |
004b6862 CY |
1276 | modified = true; |
1277 | } | |
1278 | ||
1279 | if (blkaddr < di.lstart + di.len - 1) { | |
1280 | if (modified) { | |
1281 | __insert_discard_tree(sbi, dc->bdev, blkaddr + 1, | |
1282 | di.start + blkaddr + 1 - di.lstart, | |
1283 | di.lstart + di.len - 1 - blkaddr, | |
1284 | NULL, NULL); | |
1285 | } else { | |
1286 | dc->lstart++; | |
1287 | dc->len--; | |
1288 | dc->start++; | |
d84d1cbd | 1289 | dcc->undiscard_blks += dc->len; |
ba48a33e | 1290 | __relocate_discard_cmd(dcc, dc); |
004b6862 | 1291 | } |
3d6a650f YH |
1292 | } |
1293 | } | |
1294 | ||
004b6862 CY |
1295 | static void __update_discard_tree_range(struct f2fs_sb_info *sbi, |
1296 | struct block_device *bdev, block_t lstart, | |
1297 | block_t start, block_t len) | |
275b66b0 | 1298 | { |
0b54fb84 | 1299 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
004b6862 CY |
1300 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; |
1301 | struct discard_cmd *dc; | |
1302 | struct discard_info di = {0}; | |
1303 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
35ec7d57 CY |
1304 | struct request_queue *q = bdev_get_queue(bdev); |
1305 | unsigned int max_discard_blocks = | |
1306 | SECTOR_TO_BLOCK(q->limits.max_discard_sectors); | |
004b6862 | 1307 | block_t end = lstart + len; |
275b66b0 | 1308 | |
4d57b86d | 1309 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, |
004b6862 CY |
1310 | NULL, lstart, |
1311 | (struct rb_entry **)&prev_dc, | |
1312 | (struct rb_entry **)&next_dc, | |
4dada3fd | 1313 | &insert_p, &insert_parent, true, NULL); |
004b6862 CY |
1314 | if (dc) |
1315 | prev_dc = dc; | |
1316 | ||
1317 | if (!prev_dc) { | |
1318 | di.lstart = lstart; | |
1319 | di.len = next_dc ? next_dc->lstart - lstart : len; | |
1320 | di.len = min(di.len, len); | |
1321 | di.start = start; | |
22d375dd | 1322 | } |
15469963 | 1323 | |
004b6862 CY |
1324 | while (1) { |
1325 | struct rb_node *node; | |
1326 | bool merged = false; | |
1327 | struct discard_cmd *tdc = NULL; | |
1328 | ||
1329 | if (prev_dc) { | |
1330 | di.lstart = prev_dc->lstart + prev_dc->len; | |
1331 | if (di.lstart < lstart) | |
1332 | di.lstart = lstart; | |
1333 | if (di.lstart >= end) | |
1334 | break; | |
1335 | ||
1336 | if (!next_dc || next_dc->lstart > end) | |
1337 | di.len = end - di.lstart; | |
1338 | else | |
1339 | di.len = next_dc->lstart - di.lstart; | |
1340 | di.start = start + di.lstart - lstart; | |
1341 | } | |
1342 | ||
1343 | if (!di.len) | |
1344 | goto next; | |
1345 | ||
1346 | if (prev_dc && prev_dc->state == D_PREP && | |
1347 | prev_dc->bdev == bdev && | |
35ec7d57 CY |
1348 | __is_discard_back_mergeable(&di, &prev_dc->di, |
1349 | max_discard_blocks)) { | |
004b6862 | 1350 | prev_dc->di.len += di.len; |
d84d1cbd | 1351 | dcc->undiscard_blks += di.len; |
ba48a33e | 1352 | __relocate_discard_cmd(dcc, prev_dc); |
004b6862 CY |
1353 | di = prev_dc->di; |
1354 | tdc = prev_dc; | |
1355 | merged = true; | |
1356 | } | |
1357 | ||
1358 | if (next_dc && next_dc->state == D_PREP && | |
1359 | next_dc->bdev == bdev && | |
35ec7d57 CY |
1360 | __is_discard_front_mergeable(&di, &next_dc->di, |
1361 | max_discard_blocks)) { | |
004b6862 CY |
1362 | next_dc->di.lstart = di.lstart; |
1363 | next_dc->di.len += di.len; | |
1364 | next_dc->di.start = di.start; | |
d84d1cbd | 1365 | dcc->undiscard_blks += di.len; |
ba48a33e | 1366 | __relocate_discard_cmd(dcc, next_dc); |
004b6862 CY |
1367 | if (tdc) |
1368 | __remove_discard_cmd(sbi, tdc); | |
004b6862 | 1369 | merged = true; |
4e6a8d9b | 1370 | } |
004b6862 | 1371 | |
df0f6b44 | 1372 | if (!merged) { |
004b6862 CY |
1373 | __insert_discard_tree(sbi, bdev, di.lstart, di.start, |
1374 | di.len, NULL, NULL); | |
df0f6b44 | 1375 | } |
004b6862 CY |
1376 | next: |
1377 | prev_dc = next_dc; | |
1378 | if (!prev_dc) | |
1379 | break; | |
1380 | ||
1381 | node = rb_next(&prev_dc->rb_node); | |
1382 | next_dc = rb_entry_safe(node, struct discard_cmd, rb_node); | |
1383 | } | |
004b6862 CY |
1384 | } |
1385 | ||
1386 | static int __queue_discard_cmd(struct f2fs_sb_info *sbi, | |
1387 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1388 | { | |
1389 | block_t lblkstart = blkstart; | |
1390 | ||
7f3d7719 DLM |
1391 | if (!f2fs_bdev_support_discard(bdev)) |
1392 | return 0; | |
1393 | ||
0243a5f9 | 1394 | trace_f2fs_queue_discard(bdev, blkstart, blklen); |
004b6862 | 1395 | |
0916878d | 1396 | if (f2fs_is_multi_device(sbi)) { |
004b6862 CY |
1397 | int devi = f2fs_target_device_index(sbi, blkstart); |
1398 | ||
1399 | blkstart -= FDEV(devi).start_blk; | |
1400 | } | |
35ec7d57 | 1401 | mutex_lock(&SM_I(sbi)->dcc_info->cmd_lock); |
004b6862 | 1402 | __update_discard_tree_range(sbi, bdev, lblkstart, blkstart, blklen); |
35ec7d57 | 1403 | mutex_unlock(&SM_I(sbi)->dcc_info->cmd_lock); |
004b6862 CY |
1404 | return 0; |
1405 | } | |
1406 | ||
20ee4382 CY |
1407 | static unsigned int __issue_discard_cmd_orderly(struct f2fs_sb_info *sbi, |
1408 | struct discard_policy *dpolicy) | |
1409 | { | |
1410 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1411 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
1412 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
1413 | struct discard_cmd *dc; | |
1414 | struct blk_plug plug; | |
1415 | unsigned int pos = dcc->next_pos; | |
1416 | unsigned int issued = 0; | |
1417 | bool io_interrupted = false; | |
1418 | ||
1419 | mutex_lock(&dcc->cmd_lock); | |
1420 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, | |
1421 | NULL, pos, | |
1422 | (struct rb_entry **)&prev_dc, | |
1423 | (struct rb_entry **)&next_dc, | |
4dada3fd | 1424 | &insert_p, &insert_parent, true, NULL); |
20ee4382 CY |
1425 | if (!dc) |
1426 | dc = next_dc; | |
1427 | ||
1428 | blk_start_plug(&plug); | |
1429 | ||
1430 | while (dc) { | |
1431 | struct rb_node *node; | |
6b9cb124 | 1432 | int err = 0; |
20ee4382 CY |
1433 | |
1434 | if (dc->state != D_PREP) | |
1435 | goto next; | |
1436 | ||
a7d10cf3 | 1437 | if (dpolicy->io_aware && !is_idle(sbi, DISCARD_TIME)) { |
20ee4382 CY |
1438 | io_interrupted = true; |
1439 | break; | |
1440 | } | |
1441 | ||
1442 | dcc->next_pos = dc->lstart + dc->len; | |
6b9cb124 | 1443 | err = __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
20ee4382 | 1444 | |
35ec7d57 | 1445 | if (issued >= dpolicy->max_requests) |
20ee4382 CY |
1446 | break; |
1447 | next: | |
1448 | node = rb_next(&dc->rb_node); | |
6b9cb124 CY |
1449 | if (err) |
1450 | __remove_discard_cmd(sbi, dc); | |
20ee4382 CY |
1451 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); |
1452 | } | |
1453 | ||
1454 | blk_finish_plug(&plug); | |
1455 | ||
1456 | if (!dc) | |
1457 | dcc->next_pos = 0; | |
1458 | ||
1459 | mutex_unlock(&dcc->cmd_lock); | |
1460 | ||
1461 | if (!issued && io_interrupted) | |
1462 | issued = -1; | |
1463 | ||
1464 | return issued; | |
1465 | } | |
1466 | ||
78997b56 CY |
1467 | static int __issue_discard_cmd(struct f2fs_sb_info *sbi, |
1468 | struct discard_policy *dpolicy) | |
bd5b0738 CY |
1469 | { |
1470 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1471 | struct list_head *pend_list; | |
1472 | struct discard_cmd *dc, *tmp; | |
1473 | struct blk_plug plug; | |
522d1711 | 1474 | int i, issued = 0; |
e6c6de18 | 1475 | bool io_interrupted = false; |
bd5b0738 | 1476 | |
6ce48b0c CY |
1477 | if (dpolicy->timeout) |
1478 | f2fs_update_time(sbi, UMOUNT_DISCARD_TIMEOUT); | |
03f2c02d | 1479 | |
78997b56 | 1480 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { |
6ce48b0c CY |
1481 | if (dpolicy->timeout && |
1482 | f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT)) | |
03f2c02d JK |
1483 | break; |
1484 | ||
78997b56 CY |
1485 | if (i + 1 < dpolicy->granularity) |
1486 | break; | |
20ee4382 CY |
1487 | |
1488 | if (i < DEFAULT_DISCARD_GRANULARITY && dpolicy->ordered) | |
1489 | return __issue_discard_cmd_orderly(sbi, dpolicy); | |
1490 | ||
bd5b0738 | 1491 | pend_list = &dcc->pend_list[i]; |
33da62cf CY |
1492 | |
1493 | mutex_lock(&dcc->cmd_lock); | |
49c60c67 CY |
1494 | if (list_empty(pend_list)) |
1495 | goto next; | |
67fce70b CY |
1496 | if (unlikely(dcc->rbtree_check)) |
1497 | f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi, | |
1498 | &dcc->root)); | |
33da62cf | 1499 | blk_start_plug(&plug); |
bd5b0738 CY |
1500 | list_for_each_entry_safe(dc, tmp, pend_list, list) { |
1501 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1502 | ||
6ce48b0c CY |
1503 | if (dpolicy->timeout && |
1504 | f2fs_time_over(sbi, UMOUNT_DISCARD_TIMEOUT)) | |
6e0cd4a9 HX |
1505 | break; |
1506 | ||
ecc9aa00 | 1507 | if (dpolicy->io_aware && i < dpolicy->io_aware_gran && |
a7d10cf3 | 1508 | !is_idle(sbi, DISCARD_TIME)) { |
e6c6de18 | 1509 | io_interrupted = true; |
522d1711 | 1510 | break; |
969d1b18 | 1511 | } |
e6c6de18 | 1512 | |
35ec7d57 | 1513 | __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
522d1711 | 1514 | |
35ec7d57 | 1515 | if (issued >= dpolicy->max_requests) |
33da62cf | 1516 | break; |
bd5b0738 | 1517 | } |
33da62cf | 1518 | blk_finish_plug(&plug); |
49c60c67 | 1519 | next: |
33da62cf CY |
1520 | mutex_unlock(&dcc->cmd_lock); |
1521 | ||
522d1711 | 1522 | if (issued >= dpolicy->max_requests || io_interrupted) |
33da62cf | 1523 | break; |
bd5b0738 | 1524 | } |
969d1b18 | 1525 | |
e6c6de18 CY |
1526 | if (!issued && io_interrupted) |
1527 | issued = -1; | |
1528 | ||
969d1b18 CY |
1529 | return issued; |
1530 | } | |
1531 | ||
cf5c759f | 1532 | static bool __drop_discard_cmd(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1533 | { |
1534 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1535 | struct list_head *pend_list; | |
1536 | struct discard_cmd *dc, *tmp; | |
1537 | int i; | |
cf5c759f | 1538 | bool dropped = false; |
969d1b18 CY |
1539 | |
1540 | mutex_lock(&dcc->cmd_lock); | |
1541 | for (i = MAX_PLIST_NUM - 1; i >= 0; i--) { | |
1542 | pend_list = &dcc->pend_list[i]; | |
1543 | list_for_each_entry_safe(dc, tmp, pend_list, list) { | |
1544 | f2fs_bug_on(sbi, dc->state != D_PREP); | |
1545 | __remove_discard_cmd(sbi, dc); | |
cf5c759f | 1546 | dropped = true; |
969d1b18 CY |
1547 | } |
1548 | } | |
1549 | mutex_unlock(&dcc->cmd_lock); | |
cf5c759f CY |
1550 | |
1551 | return dropped; | |
bd5b0738 CY |
1552 | } |
1553 | ||
4d57b86d | 1554 | void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi) |
7950e9ac CY |
1555 | { |
1556 | __drop_discard_cmd(sbi); | |
1557 | } | |
1558 | ||
0ea80512 | 1559 | static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi, |
2a510c00 CY |
1560 | struct discard_cmd *dc) |
1561 | { | |
1562 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
0ea80512 | 1563 | unsigned int len = 0; |
2a510c00 CY |
1564 | |
1565 | wait_for_completion_io(&dc->wait); | |
1566 | mutex_lock(&dcc->cmd_lock); | |
1567 | f2fs_bug_on(sbi, dc->state != D_DONE); | |
1568 | dc->ref--; | |
0ea80512 CY |
1569 | if (!dc->ref) { |
1570 | if (!dc->error) | |
1571 | len = dc->len; | |
2a510c00 | 1572 | __remove_discard_cmd(sbi, dc); |
0ea80512 | 1573 | } |
2a510c00 | 1574 | mutex_unlock(&dcc->cmd_lock); |
0ea80512 CY |
1575 | |
1576 | return len; | |
2a510c00 CY |
1577 | } |
1578 | ||
0ea80512 | 1579 | static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi, |
78997b56 CY |
1580 | struct discard_policy *dpolicy, |
1581 | block_t start, block_t end) | |
63a94fa1 CY |
1582 | { |
1583 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 CY |
1584 | struct list_head *wait_list = (dpolicy->type == DPOLICY_FSTRIM) ? |
1585 | &(dcc->fstrim_list) : &(dcc->wait_list); | |
63a94fa1 | 1586 | struct discard_cmd *dc, *tmp; |
6afae633 | 1587 | bool need_wait; |
0ea80512 | 1588 | unsigned int trimmed = 0; |
6afae633 CY |
1589 | |
1590 | next: | |
1591 | need_wait = false; | |
63a94fa1 CY |
1592 | |
1593 | mutex_lock(&dcc->cmd_lock); | |
1594 | list_for_each_entry_safe(dc, tmp, wait_list, list) { | |
8412663d CY |
1595 | if (dc->lstart + dc->len <= start || end <= dc->lstart) |
1596 | continue; | |
78997b56 | 1597 | if (dc->len < dpolicy->granularity) |
8412663d | 1598 | continue; |
78997b56 | 1599 | if (dc->state == D_DONE && !dc->ref) { |
63a94fa1 | 1600 | wait_for_completion_io(&dc->wait); |
0ea80512 CY |
1601 | if (!dc->error) |
1602 | trimmed += dc->len; | |
63a94fa1 | 1603 | __remove_discard_cmd(sbi, dc); |
6afae633 CY |
1604 | } else { |
1605 | dc->ref++; | |
1606 | need_wait = true; | |
1607 | break; | |
63a94fa1 CY |
1608 | } |
1609 | } | |
1610 | mutex_unlock(&dcc->cmd_lock); | |
6afae633 CY |
1611 | |
1612 | if (need_wait) { | |
0ea80512 | 1613 | trimmed += __wait_one_discard_bio(sbi, dc); |
6afae633 CY |
1614 | goto next; |
1615 | } | |
0ea80512 CY |
1616 | |
1617 | return trimmed; | |
63a94fa1 CY |
1618 | } |
1619 | ||
01f9cf6d | 1620 | static unsigned int __wait_all_discard_cmd(struct f2fs_sb_info *sbi, |
78997b56 | 1621 | struct discard_policy *dpolicy) |
8412663d | 1622 | { |
9a997188 | 1623 | struct discard_policy dp; |
01f9cf6d | 1624 | unsigned int discard_blks; |
9a997188 | 1625 | |
01f9cf6d CY |
1626 | if (dpolicy) |
1627 | return __wait_discard_cmd_range(sbi, dpolicy, 0, UINT_MAX); | |
9a997188 JK |
1628 | |
1629 | /* wait all */ | |
8bb4f253 | 1630 | __init_discard_policy(sbi, &dp, DPOLICY_FSTRIM, 1); |
01f9cf6d | 1631 | discard_blks = __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX); |
8bb4f253 | 1632 | __init_discard_policy(sbi, &dp, DPOLICY_UMOUNT, 1); |
01f9cf6d CY |
1633 | discard_blks += __wait_discard_cmd_range(sbi, &dp, 0, UINT_MAX); |
1634 | ||
1635 | return discard_blks; | |
8412663d CY |
1636 | } |
1637 | ||
004b6862 | 1638 | /* This should be covered by global mutex, &sit_i->sentry_lock */ |
94b1e10e | 1639 | static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) |
004b6862 CY |
1640 | { |
1641 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1642 | struct discard_cmd *dc; | |
ec9895ad | 1643 | bool need_wait = false; |
004b6862 CY |
1644 | |
1645 | mutex_lock(&dcc->cmd_lock); | |
4d57b86d CY |
1646 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree(&dcc->root, |
1647 | NULL, blkaddr); | |
004b6862 | 1648 | if (dc) { |
ec9895ad CY |
1649 | if (dc->state == D_PREP) { |
1650 | __punch_discard_cmd(sbi, dc, blkaddr); | |
1651 | } else { | |
1652 | dc->ref++; | |
1653 | need_wait = true; | |
1654 | } | |
275b66b0 | 1655 | } |
d431413f | 1656 | mutex_unlock(&dcc->cmd_lock); |
ec9895ad | 1657 | |
2a510c00 CY |
1658 | if (need_wait) |
1659 | __wait_one_discard_bio(sbi, dc); | |
d431413f CY |
1660 | } |
1661 | ||
4d57b86d | 1662 | void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi) |
cce13252 CY |
1663 | { |
1664 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1665 | ||
1666 | if (dcc && dcc->f2fs_issue_discard) { | |
1667 | struct task_struct *discard_thread = dcc->f2fs_issue_discard; | |
1668 | ||
1669 | dcc->f2fs_issue_discard = NULL; | |
1670 | kthread_stop(discard_thread); | |
ec9895ad | 1671 | } |
d431413f CY |
1672 | } |
1673 | ||
8412663d | 1674 | /* This comes from f2fs_put_super */ |
03f2c02d | 1675 | bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi) |
969d1b18 CY |
1676 | { |
1677 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
78997b56 | 1678 | struct discard_policy dpolicy; |
cf5c759f | 1679 | bool dropped; |
969d1b18 | 1680 | |
8bb4f253 JK |
1681 | __init_discard_policy(sbi, &dpolicy, DPOLICY_UMOUNT, |
1682 | dcc->discard_granularity); | |
78997b56 | 1683 | __issue_discard_cmd(sbi, &dpolicy); |
cf5c759f | 1684 | dropped = __drop_discard_cmd(sbi); |
cf5c759f | 1685 | |
9a997188 JK |
1686 | /* just to make sure there is no pending discard commands */ |
1687 | __wait_all_discard_cmd(sbi, NULL); | |
2482c432 CY |
1688 | |
1689 | f2fs_bug_on(sbi, atomic_read(&dcc->discard_cmd_cnt)); | |
cf5c759f | 1690 | return dropped; |
969d1b18 CY |
1691 | } |
1692 | ||
15469963 JK |
1693 | static int issue_discard_thread(void *data) |
1694 | { | |
1695 | struct f2fs_sb_info *sbi = data; | |
1696 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
1697 | wait_queue_head_t *q = &dcc->discard_wait_queue; | |
78997b56 | 1698 | struct discard_policy dpolicy; |
969d1b18 CY |
1699 | unsigned int wait_ms = DEF_MIN_DISCARD_ISSUE_TIME; |
1700 | int issued; | |
15469963 | 1701 | |
1d7be270 | 1702 | set_freezable(); |
15469963 | 1703 | |
1d7be270 | 1704 | do { |
8bb4f253 | 1705 | __init_discard_policy(sbi, &dpolicy, DPOLICY_BG, |
78997b56 CY |
1706 | dcc->discard_granularity); |
1707 | ||
969d1b18 CY |
1708 | wait_event_interruptible_timeout(*q, |
1709 | kthread_should_stop() || freezing(current) || | |
1710 | dcc->discard_wake, | |
1711 | msecs_to_jiffies(wait_ms)); | |
35a9a766 SY |
1712 | |
1713 | if (dcc->discard_wake) | |
1714 | dcc->discard_wake = 0; | |
1715 | ||
76c7bfb3 JK |
1716 | /* clean up pending candidates before going to sleep */ |
1717 | if (atomic_read(&dcc->queued_discard)) | |
1718 | __wait_all_discard_cmd(sbi, NULL); | |
1719 | ||
1d7be270 JK |
1720 | if (try_to_freeze()) |
1721 | continue; | |
3b60d802 CY |
1722 | if (f2fs_readonly(sbi->sb)) |
1723 | continue; | |
1d7be270 JK |
1724 | if (kthread_should_stop()) |
1725 | return 0; | |
d6184774 YH |
1726 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
1727 | wait_ms = dpolicy.max_interval; | |
1728 | continue; | |
1729 | } | |
15469963 | 1730 | |
5b0e9539 | 1731 | if (sbi->gc_mode == GC_URGENT) |
8bb4f253 | 1732 | __init_discard_policy(sbi, &dpolicy, DPOLICY_FORCE, 1); |
969d1b18 | 1733 | |
dc6febb6 CY |
1734 | sb_start_intwrite(sbi->sb); |
1735 | ||
78997b56 | 1736 | issued = __issue_discard_cmd(sbi, &dpolicy); |
f9d1dced | 1737 | if (issued > 0) { |
78997b56 CY |
1738 | __wait_all_discard_cmd(sbi, &dpolicy); |
1739 | wait_ms = dpolicy.min_interval; | |
f9d1dced | 1740 | } else if (issued == -1){ |
a7d10cf3 ST |
1741 | wait_ms = f2fs_time_to_wait(sbi, DISCARD_TIME); |
1742 | if (!wait_ms) | |
abde73c7 | 1743 | wait_ms = dpolicy.mid_interval; |
969d1b18 | 1744 | } else { |
78997b56 | 1745 | wait_ms = dpolicy.max_interval; |
969d1b18 | 1746 | } |
1d7be270 | 1747 | |
dc6febb6 | 1748 | sb_end_intwrite(sbi->sb); |
1d7be270 | 1749 | |
1d7be270 JK |
1750 | } while (!kthread_should_stop()); |
1751 | return 0; | |
15469963 JK |
1752 | } |
1753 | ||
f46e8809 | 1754 | #ifdef CONFIG_BLK_DEV_ZONED |
3c62be17 JK |
1755 | static int __f2fs_issue_discard_zone(struct f2fs_sb_info *sbi, |
1756 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
f46e8809 | 1757 | { |
92592285 | 1758 | sector_t sector, nr_sects; |
10a875f8 | 1759 | block_t lblkstart = blkstart; |
3c62be17 JK |
1760 | int devi = 0; |
1761 | ||
0916878d | 1762 | if (f2fs_is_multi_device(sbi)) { |
3c62be17 | 1763 | devi = f2fs_target_device_index(sbi, blkstart); |
95175daf DLM |
1764 | if (blkstart < FDEV(devi).start_blk || |
1765 | blkstart > FDEV(devi).end_blk) { | |
dcbb4c10 | 1766 | f2fs_err(sbi, "Invalid block %x", blkstart); |
95175daf DLM |
1767 | return -EIO; |
1768 | } | |
3c62be17 JK |
1769 | blkstart -= FDEV(devi).start_blk; |
1770 | } | |
f46e8809 | 1771 | |
95175daf DLM |
1772 | /* For sequential zones, reset the zone write pointer */ |
1773 | if (f2fs_blkz_is_seq(sbi, devi, blkstart)) { | |
92592285 JK |
1774 | sector = SECTOR_FROM_BLOCK(blkstart); |
1775 | nr_sects = SECTOR_FROM_BLOCK(blklen); | |
1776 | ||
1777 | if (sector & (bdev_zone_sectors(bdev) - 1) || | |
1778 | nr_sects != bdev_zone_sectors(bdev)) { | |
dcbb4c10 JP |
1779 | f2fs_err(sbi, "(%d) %s: Unaligned zone reset attempted (block %x + %x)", |
1780 | devi, sbi->s_ndevs ? FDEV(devi).path : "", | |
1781 | blkstart, blklen); | |
92592285 JK |
1782 | return -EIO; |
1783 | } | |
d50aaeec | 1784 | trace_f2fs_issue_reset_zone(bdev, blkstart); |
6c1b1da5 AJ |
1785 | return blkdev_zone_mgmt(bdev, REQ_OP_ZONE_RESET, |
1786 | sector, nr_sects, GFP_NOFS); | |
f46e8809 | 1787 | } |
95175daf DLM |
1788 | |
1789 | /* For conventional zones, use regular discard if supported */ | |
95175daf | 1790 | return __queue_discard_cmd(sbi, bdev, lblkstart, blklen); |
f46e8809 DLM |
1791 | } |
1792 | #endif | |
1793 | ||
3c62be17 JK |
1794 | static int __issue_discard_async(struct f2fs_sb_info *sbi, |
1795 | struct block_device *bdev, block_t blkstart, block_t blklen) | |
1796 | { | |
1797 | #ifdef CONFIG_BLK_DEV_ZONED | |
7f3d7719 | 1798 | if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev)) |
3c62be17 JK |
1799 | return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen); |
1800 | #endif | |
c81abe34 | 1801 | return __queue_discard_cmd(sbi, bdev, blkstart, blklen); |
3c62be17 JK |
1802 | } |
1803 | ||
1e87a78d | 1804 | static int f2fs_issue_discard(struct f2fs_sb_info *sbi, |
37208879 JK |
1805 | block_t blkstart, block_t blklen) |
1806 | { | |
3c62be17 JK |
1807 | sector_t start = blkstart, len = 0; |
1808 | struct block_device *bdev; | |
a66cdd98 JK |
1809 | struct seg_entry *se; |
1810 | unsigned int offset; | |
1811 | block_t i; | |
3c62be17 JK |
1812 | int err = 0; |
1813 | ||
1814 | bdev = f2fs_target_device(sbi, blkstart, NULL); | |
1815 | ||
1816 | for (i = blkstart; i < blkstart + blklen; i++, len++) { | |
1817 | if (i != start) { | |
1818 | struct block_device *bdev2 = | |
1819 | f2fs_target_device(sbi, i, NULL); | |
1820 | ||
1821 | if (bdev2 != bdev) { | |
1822 | err = __issue_discard_async(sbi, bdev, | |
1823 | start, len); | |
1824 | if (err) | |
1825 | return err; | |
1826 | bdev = bdev2; | |
1827 | start = i; | |
1828 | len = 0; | |
1829 | } | |
1830 | } | |
a66cdd98 | 1831 | |
a66cdd98 JK |
1832 | se = get_seg_entry(sbi, GET_SEGNO(sbi, i)); |
1833 | offset = GET_BLKOFF_FROM_SEG0(sbi, i); | |
1834 | ||
1835 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) | |
1836 | sbi->discard_blks--; | |
1837 | } | |
f46e8809 | 1838 | |
3c62be17 JK |
1839 | if (len) |
1840 | err = __issue_discard_async(sbi, bdev, start, len); | |
1841 | return err; | |
1e87a78d JK |
1842 | } |
1843 | ||
25290fa5 JK |
1844 | static bool add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc, |
1845 | bool check_only) | |
adf4983b | 1846 | { |
b2955550 JK |
1847 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
1848 | int max_blocks = sbi->blocks_per_seg; | |
4b2fecc8 | 1849 | struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); |
b2955550 JK |
1850 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; |
1851 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; | |
a66cdd98 | 1852 | unsigned long *discard_map = (unsigned long *)se->discard_map; |
60a3b782 | 1853 | unsigned long *dmap = SIT_I(sbi)->tmp_map; |
b2955550 | 1854 | unsigned int start = 0, end = -1; |
c473f1a9 | 1855 | bool force = (cpc->reason & CP_DISCARD); |
a7eeb823 | 1856 | struct discard_entry *de = NULL; |
46f84c2c | 1857 | struct list_head *head = &SM_I(sbi)->dcc_info->entry_list; |
b2955550 JK |
1858 | int i; |
1859 | ||
7d20c8ab | 1860 | if (se->valid_blocks == max_blocks || !f2fs_hw_support_discard(sbi)) |
25290fa5 | 1861 | return false; |
b2955550 | 1862 | |
a66cdd98 | 1863 | if (!force) { |
7d20c8ab | 1864 | if (!f2fs_realtime_discard_enable(sbi) || !se->valid_blocks || |
0b54fb84 JK |
1865 | SM_I(sbi)->dcc_info->nr_discards >= |
1866 | SM_I(sbi)->dcc_info->max_discards) | |
25290fa5 | 1867 | return false; |
4b2fecc8 JK |
1868 | } |
1869 | ||
b2955550 JK |
1870 | /* SIT_VBLOCK_MAP_SIZE should be multiple of sizeof(unsigned long) */ |
1871 | for (i = 0; i < entries; i++) | |
a66cdd98 | 1872 | dmap[i] = force ? ~ckpt_map[i] & ~discard_map[i] : |
d7bc2484 | 1873 | (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; |
b2955550 | 1874 | |
0b54fb84 JK |
1875 | while (force || SM_I(sbi)->dcc_info->nr_discards <= |
1876 | SM_I(sbi)->dcc_info->max_discards) { | |
b2955550 JK |
1877 | start = __find_rev_next_bit(dmap, max_blocks, end + 1); |
1878 | if (start >= max_blocks) | |
1879 | break; | |
1880 | ||
1881 | end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); | |
c7b41e16 YH |
1882 | if (force && start && end != max_blocks |
1883 | && (end - start) < cpc->trim_minlen) | |
1884 | continue; | |
1885 | ||
25290fa5 JK |
1886 | if (check_only) |
1887 | return true; | |
1888 | ||
a7eeb823 CY |
1889 | if (!de) { |
1890 | de = f2fs_kmem_cache_alloc(discard_entry_slab, | |
1891 | GFP_F2FS_ZERO); | |
1892 | de->start_blkaddr = START_BLOCK(sbi, cpc->trim_start); | |
1893 | list_add_tail(&de->list, head); | |
1894 | } | |
1895 | ||
1896 | for (i = start; i < end; i++) | |
1897 | __set_bit_le(i, (void *)de->discard_map); | |
1898 | ||
1899 | SM_I(sbi)->dcc_info->nr_discards += end - start; | |
b2955550 | 1900 | } |
25290fa5 | 1901 | return false; |
b2955550 JK |
1902 | } |
1903 | ||
af8ff65b CY |
1904 | static void release_discard_addr(struct discard_entry *entry) |
1905 | { | |
1906 | list_del(&entry->list); | |
1907 | kmem_cache_free(discard_entry_slab, entry); | |
1908 | } | |
1909 | ||
4d57b86d | 1910 | void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi) |
4b2fecc8 | 1911 | { |
46f84c2c | 1912 | struct list_head *head = &(SM_I(sbi)->dcc_info->entry_list); |
4b2fecc8 JK |
1913 | struct discard_entry *entry, *this; |
1914 | ||
1915 | /* drop caches */ | |
af8ff65b CY |
1916 | list_for_each_entry_safe(entry, this, head, list) |
1917 | release_discard_addr(entry); | |
4b2fecc8 JK |
1918 | } |
1919 | ||
0a8165d7 | 1920 | /* |
4d57b86d | 1921 | * Should call f2fs_clear_prefree_segments after checkpoint is done. |
351df4b2 JK |
1922 | */ |
1923 | static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) | |
1924 | { | |
1925 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
b65ee148 | 1926 | unsigned int segno; |
351df4b2 JK |
1927 | |
1928 | mutex_lock(&dirty_i->seglist_lock); | |
7cd8558b | 1929 | for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) |
351df4b2 | 1930 | __set_test_and_free(sbi, segno); |
351df4b2 JK |
1931 | mutex_unlock(&dirty_i->seglist_lock); |
1932 | } | |
1933 | ||
4d57b86d CY |
1934 | void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi, |
1935 | struct cp_control *cpc) | |
351df4b2 | 1936 | { |
969d1b18 CY |
1937 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; |
1938 | struct list_head *head = &dcc->entry_list; | |
2d7b822a | 1939 | struct discard_entry *entry, *this; |
351df4b2 | 1940 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
29e59c14 | 1941 | unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; |
29e59c14 | 1942 | unsigned int start = 0, end = -1; |
36abef4e | 1943 | unsigned int secno, start_segno; |
c473f1a9 | 1944 | bool force = (cpc->reason & CP_DISCARD); |
b0332a0f | 1945 | bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi); |
351df4b2 JK |
1946 | |
1947 | mutex_lock(&dirty_i->seglist_lock); | |
29e59c14 | 1948 | |
351df4b2 | 1949 | while (1) { |
29e59c14 | 1950 | int i; |
ad6672bb YS |
1951 | |
1952 | if (need_align && end != -1) | |
1953 | end--; | |
7cd8558b JK |
1954 | start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); |
1955 | if (start >= MAIN_SEGS(sbi)) | |
351df4b2 | 1956 | break; |
7cd8558b JK |
1957 | end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), |
1958 | start + 1); | |
29e59c14 | 1959 | |
ad6672bb YS |
1960 | if (need_align) { |
1961 | start = rounddown(start, sbi->segs_per_sec); | |
1962 | end = roundup(end, sbi->segs_per_sec); | |
1963 | } | |
29e59c14 | 1964 | |
ad6672bb YS |
1965 | for (i = start; i < end; i++) { |
1966 | if (test_and_clear_bit(i, prefree_map)) | |
1967 | dirty_i->nr_dirty[PRE]--; | |
1968 | } | |
29e59c14 | 1969 | |
7d20c8ab | 1970 | if (!f2fs_realtime_discard_enable(sbi)) |
29e59c14 | 1971 | continue; |
351df4b2 | 1972 | |
650d3c4e YH |
1973 | if (force && start >= cpc->trim_start && |
1974 | (end - 1) <= cpc->trim_end) | |
1975 | continue; | |
1976 | ||
b0332a0f | 1977 | if (!f2fs_lfs_mode(sbi) || !__is_large_section(sbi)) { |
36abef4e | 1978 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start), |
37208879 | 1979 | (end - start) << sbi->log_blocks_per_seg); |
36abef4e JK |
1980 | continue; |
1981 | } | |
1982 | next: | |
4ddb1a4d JK |
1983 | secno = GET_SEC_FROM_SEG(sbi, start); |
1984 | start_segno = GET_SEG_FROM_SEC(sbi, secno); | |
36abef4e | 1985 | if (!IS_CURSEC(sbi, secno) && |
302bd348 | 1986 | !get_valid_blocks(sbi, start, true)) |
36abef4e JK |
1987 | f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), |
1988 | sbi->segs_per_sec << sbi->log_blocks_per_seg); | |
1989 | ||
1990 | start = start_segno + sbi->segs_per_sec; | |
1991 | if (start < end) | |
1992 | goto next; | |
8b107f5b JK |
1993 | else |
1994 | end = start - 1; | |
351df4b2 JK |
1995 | } |
1996 | mutex_unlock(&dirty_i->seglist_lock); | |
b2955550 JK |
1997 | |
1998 | /* send small discards */ | |
2d7b822a | 1999 | list_for_each_entry_safe(entry, this, head, list) { |
a7eeb823 CY |
2000 | unsigned int cur_pos = 0, next_pos, len, total_len = 0; |
2001 | bool is_valid = test_bit_le(0, entry->discard_map); | |
2002 | ||
2003 | find_next: | |
2004 | if (is_valid) { | |
2005 | next_pos = find_next_zero_bit_le(entry->discard_map, | |
2006 | sbi->blocks_per_seg, cur_pos); | |
2007 | len = next_pos - cur_pos; | |
2008 | ||
7beb01f7 | 2009 | if (f2fs_sb_has_blkzoned(sbi) || |
acfd2810 | 2010 | (force && len < cpc->trim_minlen)) |
a7eeb823 CY |
2011 | goto skip; |
2012 | ||
2013 | f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, | |
2014 | len); | |
a7eeb823 CY |
2015 | total_len += len; |
2016 | } else { | |
2017 | next_pos = find_next_bit_le(entry->discard_map, | |
2018 | sbi->blocks_per_seg, cur_pos); | |
2019 | } | |
836b5a63 | 2020 | skip: |
a7eeb823 CY |
2021 | cur_pos = next_pos; |
2022 | is_valid = !is_valid; | |
2023 | ||
2024 | if (cur_pos < sbi->blocks_per_seg) | |
2025 | goto find_next; | |
2026 | ||
af8ff65b | 2027 | release_discard_addr(entry); |
969d1b18 | 2028 | dcc->nr_discards -= total_len; |
b2955550 | 2029 | } |
34e159da | 2030 | |
01983c71 | 2031 | wake_up_discard_thread(sbi, false); |
351df4b2 JK |
2032 | } |
2033 | ||
8ed59745 | 2034 | static int create_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 | 2035 | { |
15469963 | 2036 | dev_t dev = sbi->sb->s_bdev->bd_dev; |
0b54fb84 | 2037 | struct discard_cmd_control *dcc; |
ba48a33e | 2038 | int err = 0, i; |
0b54fb84 JK |
2039 | |
2040 | if (SM_I(sbi)->dcc_info) { | |
2041 | dcc = SM_I(sbi)->dcc_info; | |
2042 | goto init_thread; | |
2043 | } | |
2044 | ||
acbf054d | 2045 | dcc = f2fs_kzalloc(sbi, sizeof(struct discard_cmd_control), GFP_KERNEL); |
0b54fb84 JK |
2046 | if (!dcc) |
2047 | return -ENOMEM; | |
2048 | ||
969d1b18 | 2049 | dcc->discard_granularity = DEFAULT_DISCARD_GRANULARITY; |
46f84c2c | 2050 | INIT_LIST_HEAD(&dcc->entry_list); |
78997b56 | 2051 | for (i = 0; i < MAX_PLIST_NUM; i++) |
ba48a33e | 2052 | INIT_LIST_HEAD(&dcc->pend_list[i]); |
46f84c2c | 2053 | INIT_LIST_HEAD(&dcc->wait_list); |
8412663d | 2054 | INIT_LIST_HEAD(&dcc->fstrim_list); |
15469963 | 2055 | mutex_init(&dcc->cmd_lock); |
8b8dd65f | 2056 | atomic_set(&dcc->issued_discard, 0); |
72691af6 | 2057 | atomic_set(&dcc->queued_discard, 0); |
5f32366a | 2058 | atomic_set(&dcc->discard_cmd_cnt, 0); |
0b54fb84 | 2059 | dcc->nr_discards = 0; |
d618ebaf | 2060 | dcc->max_discards = MAIN_SEGS(sbi) << sbi->log_blocks_per_seg; |
d84d1cbd | 2061 | dcc->undiscard_blks = 0; |
20ee4382 | 2062 | dcc->next_pos = 0; |
4dada3fd | 2063 | dcc->root = RB_ROOT_CACHED; |
67fce70b | 2064 | dcc->rbtree_check = false; |
0b54fb84 | 2065 | |
15469963 | 2066 | init_waitqueue_head(&dcc->discard_wait_queue); |
0b54fb84 JK |
2067 | SM_I(sbi)->dcc_info = dcc; |
2068 | init_thread: | |
15469963 JK |
2069 | dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi, |
2070 | "f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev)); | |
2071 | if (IS_ERR(dcc->f2fs_issue_discard)) { | |
2072 | err = PTR_ERR(dcc->f2fs_issue_discard); | |
5222595d | 2073 | kvfree(dcc); |
15469963 JK |
2074 | SM_I(sbi)->dcc_info = NULL; |
2075 | return err; | |
2076 | } | |
2077 | ||
0b54fb84 JK |
2078 | return err; |
2079 | } | |
2080 | ||
f099405f | 2081 | static void destroy_discard_cmd_control(struct f2fs_sb_info *sbi) |
0b54fb84 JK |
2082 | { |
2083 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
2084 | ||
f099405f CY |
2085 | if (!dcc) |
2086 | return; | |
2087 | ||
4d57b86d | 2088 | f2fs_stop_discard_thread(sbi); |
f099405f | 2089 | |
04f9287a CY |
2090 | /* |
2091 | * Recovery can cache discard commands, so in error path of | |
2092 | * fill_super(), it needs to give a chance to handle them. | |
2093 | */ | |
2094 | if (unlikely(atomic_read(&dcc->discard_cmd_cnt))) | |
2095 | f2fs_issue_discard_timeout(sbi); | |
2096 | ||
5222595d | 2097 | kvfree(dcc); |
f099405f | 2098 | SM_I(sbi)->dcc_info = NULL; |
0b54fb84 JK |
2099 | } |
2100 | ||
184a5cd2 | 2101 | static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 JK |
2102 | { |
2103 | struct sit_info *sit_i = SIT_I(sbi); | |
184a5cd2 CY |
2104 | |
2105 | if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { | |
351df4b2 | 2106 | sit_i->dirty_sentries++; |
184a5cd2 CY |
2107 | return false; |
2108 | } | |
2109 | ||
2110 | return true; | |
351df4b2 JK |
2111 | } |
2112 | ||
2113 | static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, | |
2114 | unsigned int segno, int modified) | |
2115 | { | |
2116 | struct seg_entry *se = get_seg_entry(sbi, segno); | |
2117 | se->type = type; | |
2118 | if (modified) | |
2119 | __mark_sit_entry_dirty(sbi, segno); | |
2120 | } | |
2121 | ||
2122 | static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) | |
2123 | { | |
2124 | struct seg_entry *se; | |
2125 | unsigned int segno, offset; | |
2126 | long int new_vblocks; | |
6415fedc YS |
2127 | bool exist; |
2128 | #ifdef CONFIG_F2FS_CHECK_FS | |
2129 | bool mir_exist; | |
2130 | #endif | |
351df4b2 JK |
2131 | |
2132 | segno = GET_SEGNO(sbi, blkaddr); | |
2133 | ||
2134 | se = get_seg_entry(sbi, segno); | |
2135 | new_vblocks = se->valid_blocks + del; | |
491c0854 | 2136 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); |
351df4b2 | 2137 | |
9850cf4a | 2138 | f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || |
351df4b2 JK |
2139 | (new_vblocks > sbi->blocks_per_seg))); |
2140 | ||
2141 | se->valid_blocks = new_vblocks; | |
a1f72ac2 CY |
2142 | se->mtime = get_mtime(sbi, false); |
2143 | if (se->mtime > SIT_I(sbi)->max_mtime) | |
2144 | SIT_I(sbi)->max_mtime = se->mtime; | |
351df4b2 JK |
2145 | |
2146 | /* Update valid block bitmap */ | |
2147 | if (del > 0) { | |
6415fedc | 2148 | exist = f2fs_test_and_set_bit(offset, se->cur_valid_map); |
355e7891 | 2149 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
2150 | mir_exist = f2fs_test_and_set_bit(offset, |
2151 | se->cur_valid_map_mir); | |
2152 | if (unlikely(exist != mir_exist)) { | |
dcbb4c10 JP |
2153 | f2fs_err(sbi, "Inconsistent error when setting bitmap, blk:%u, old bit:%d", |
2154 | blkaddr, exist); | |
05796763 | 2155 | f2fs_bug_on(sbi, 1); |
6415fedc | 2156 | } |
355e7891 | 2157 | #endif |
6415fedc | 2158 | if (unlikely(exist)) { |
dcbb4c10 JP |
2159 | f2fs_err(sbi, "Bitmap was wrongly set, blk:%u", |
2160 | blkaddr); | |
6415fedc | 2161 | f2fs_bug_on(sbi, 1); |
35ee82ca YS |
2162 | se->valid_blocks--; |
2163 | del = 0; | |
355e7891 | 2164 | } |
6415fedc | 2165 | |
7d20c8ab | 2166 | if (!f2fs_test_and_set_bit(offset, se->discard_map)) |
a66cdd98 | 2167 | sbi->discard_blks--; |
720037f9 | 2168 | |
899fee36 CY |
2169 | /* |
2170 | * SSR should never reuse block which is checkpointed | |
2171 | * or newly invalidated. | |
2172 | */ | |
2173 | if (!is_sbi_flag_set(sbi, SBI_CP_DISABLED)) { | |
720037f9 JK |
2174 | if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map)) |
2175 | se->ckpt_valid_blocks++; | |
2176 | } | |
351df4b2 | 2177 | } else { |
6415fedc | 2178 | exist = f2fs_test_and_clear_bit(offset, se->cur_valid_map); |
355e7891 | 2179 | #ifdef CONFIG_F2FS_CHECK_FS |
6415fedc YS |
2180 | mir_exist = f2fs_test_and_clear_bit(offset, |
2181 | se->cur_valid_map_mir); | |
2182 | if (unlikely(exist != mir_exist)) { | |
dcbb4c10 JP |
2183 | f2fs_err(sbi, "Inconsistent error when clearing bitmap, blk:%u, old bit:%d", |
2184 | blkaddr, exist); | |
05796763 | 2185 | f2fs_bug_on(sbi, 1); |
6415fedc | 2186 | } |
355e7891 | 2187 | #endif |
6415fedc | 2188 | if (unlikely(!exist)) { |
dcbb4c10 JP |
2189 | f2fs_err(sbi, "Bitmap was wrongly cleared, blk:%u", |
2190 | blkaddr); | |
6415fedc | 2191 | f2fs_bug_on(sbi, 1); |
35ee82ca YS |
2192 | se->valid_blocks++; |
2193 | del = 0; | |
4354994f DR |
2194 | } else if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { |
2195 | /* | |
2196 | * If checkpoints are off, we must not reuse data that | |
2197 | * was used in the previous checkpoint. If it was used | |
2198 | * before, we must track that to know how much space we | |
2199 | * really have. | |
2200 | */ | |
c9c8ed50 CY |
2201 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) { |
2202 | spin_lock(&sbi->stat_lock); | |
4354994f | 2203 | sbi->unusable_block_count++; |
c9c8ed50 CY |
2204 | spin_unlock(&sbi->stat_lock); |
2205 | } | |
355e7891 | 2206 | } |
6415fedc | 2207 | |
7d20c8ab | 2208 | if (f2fs_test_and_clear_bit(offset, se->discard_map)) |
a66cdd98 | 2209 | sbi->discard_blks++; |
351df4b2 JK |
2210 | } |
2211 | if (!f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2212 | se->ckpt_valid_blocks += del; | |
2213 | ||
2214 | __mark_sit_entry_dirty(sbi, segno); | |
2215 | ||
2216 | /* update total number of valid blocks to be written in ckpt area */ | |
2217 | SIT_I(sbi)->written_valid_blocks += del; | |
2218 | ||
2c70c5e3 | 2219 | if (__is_large_section(sbi)) |
351df4b2 JK |
2220 | get_sec_entry(sbi, segno)->valid_blocks += del; |
2221 | } | |
2222 | ||
4d57b86d | 2223 | void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) |
351df4b2 JK |
2224 | { |
2225 | unsigned int segno = GET_SEGNO(sbi, addr); | |
2226 | struct sit_info *sit_i = SIT_I(sbi); | |
2227 | ||
9850cf4a | 2228 | f2fs_bug_on(sbi, addr == NULL_ADDR); |
4c8ff709 | 2229 | if (addr == NEW_ADDR || addr == COMPRESS_ADDR) |
351df4b2 JK |
2230 | return; |
2231 | ||
6aa58d8a CY |
2232 | invalidate_mapping_pages(META_MAPPING(sbi), addr, addr); |
2233 | ||
351df4b2 | 2234 | /* add it into sit main buffer */ |
3d26fa6b | 2235 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
2236 | |
2237 | update_sit_entry(sbi, addr, -1); | |
2238 | ||
2239 | /* add it into dirty seglist */ | |
2240 | locate_dirty_segment(sbi, segno); | |
2241 | ||
3d26fa6b | 2242 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
2243 | } |
2244 | ||
4d57b86d | 2245 | bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr) |
6e2c64ad JK |
2246 | { |
2247 | struct sit_info *sit_i = SIT_I(sbi); | |
2248 | unsigned int segno, offset; | |
2249 | struct seg_entry *se; | |
2250 | bool is_cp = false; | |
2251 | ||
93770ab7 | 2252 | if (!__is_valid_data_blkaddr(blkaddr)) |
6e2c64ad JK |
2253 | return true; |
2254 | ||
3d26fa6b | 2255 | down_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2256 | |
2257 | segno = GET_SEGNO(sbi, blkaddr); | |
2258 | se = get_seg_entry(sbi, segno); | |
2259 | offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); | |
2260 | ||
2261 | if (f2fs_test_bit(offset, se->ckpt_valid_map)) | |
2262 | is_cp = true; | |
2263 | ||
3d26fa6b | 2264 | up_read(&sit_i->sentry_lock); |
6e2c64ad JK |
2265 | |
2266 | return is_cp; | |
2267 | } | |
2268 | ||
0a8165d7 | 2269 | /* |
351df4b2 JK |
2270 | * This function should be resided under the curseg_mutex lock |
2271 | */ | |
2272 | static void __add_sum_entry(struct f2fs_sb_info *sbi, int type, | |
e79efe3b | 2273 | struct f2fs_summary *sum) |
351df4b2 JK |
2274 | { |
2275 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2276 | void *addr = curseg->sum_blk; | |
e79efe3b | 2277 | addr += curseg->next_blkoff * sizeof(struct f2fs_summary); |
351df4b2 | 2278 | memcpy(addr, sum, sizeof(struct f2fs_summary)); |
351df4b2 JK |
2279 | } |
2280 | ||
0a8165d7 | 2281 | /* |
351df4b2 JK |
2282 | * Calculate the number of current summary pages for writing |
2283 | */ | |
4d57b86d | 2284 | int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra) |
351df4b2 | 2285 | { |
351df4b2 | 2286 | int valid_sum_count = 0; |
9a47938b | 2287 | int i, sum_in_page; |
351df4b2 JK |
2288 | |
2289 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
2290 | if (sbi->ckpt->alloc_type[i] == SSR) | |
2291 | valid_sum_count += sbi->blocks_per_seg; | |
3fa06d7b CY |
2292 | else { |
2293 | if (for_ra) | |
2294 | valid_sum_count += le16_to_cpu( | |
2295 | F2FS_CKPT(sbi)->cur_data_blkoff[i]); | |
2296 | else | |
2297 | valid_sum_count += curseg_blkoff(sbi, i); | |
2298 | } | |
351df4b2 JK |
2299 | } |
2300 | ||
09cbfeaf | 2301 | sum_in_page = (PAGE_SIZE - 2 * SUM_JOURNAL_SIZE - |
9a47938b FL |
2302 | SUM_FOOTER_SIZE) / SUMMARY_SIZE; |
2303 | if (valid_sum_count <= sum_in_page) | |
351df4b2 | 2304 | return 1; |
9a47938b | 2305 | else if ((valid_sum_count - sum_in_page) <= |
09cbfeaf | 2306 | (PAGE_SIZE - SUM_FOOTER_SIZE) / SUMMARY_SIZE) |
351df4b2 JK |
2307 | return 2; |
2308 | return 3; | |
2309 | } | |
2310 | ||
0a8165d7 | 2311 | /* |
351df4b2 JK |
2312 | * Caller should put this summary page |
2313 | */ | |
4d57b86d | 2314 | struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno) |
351df4b2 | 2315 | { |
7735730d | 2316 | return f2fs_get_meta_page_nofail(sbi, GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2317 | } |
2318 | ||
4d57b86d CY |
2319 | void f2fs_update_meta_page(struct f2fs_sb_info *sbi, |
2320 | void *src, block_t blk_addr) | |
351df4b2 | 2321 | { |
4d57b86d | 2322 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
381722d2 | 2323 | |
0537b811 | 2324 | memcpy(page_address(page), src, PAGE_SIZE); |
351df4b2 JK |
2325 | set_page_dirty(page); |
2326 | f2fs_put_page(page, 1); | |
2327 | } | |
2328 | ||
381722d2 CY |
2329 | static void write_sum_page(struct f2fs_sb_info *sbi, |
2330 | struct f2fs_summary_block *sum_blk, block_t blk_addr) | |
2331 | { | |
4d57b86d | 2332 | f2fs_update_meta_page(sbi, (void *)sum_blk, blk_addr); |
381722d2 CY |
2333 | } |
2334 | ||
b7ad7512 CY |
2335 | static void write_current_sum_page(struct f2fs_sb_info *sbi, |
2336 | int type, block_t blk_addr) | |
2337 | { | |
2338 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
4d57b86d | 2339 | struct page *page = f2fs_grab_meta_page(sbi, blk_addr); |
b7ad7512 CY |
2340 | struct f2fs_summary_block *src = curseg->sum_blk; |
2341 | struct f2fs_summary_block *dst; | |
2342 | ||
2343 | dst = (struct f2fs_summary_block *)page_address(page); | |
81114baa | 2344 | memset(dst, 0, PAGE_SIZE); |
b7ad7512 CY |
2345 | |
2346 | mutex_lock(&curseg->curseg_mutex); | |
2347 | ||
2348 | down_read(&curseg->journal_rwsem); | |
2349 | memcpy(&dst->journal, curseg->journal, SUM_JOURNAL_SIZE); | |
2350 | up_read(&curseg->journal_rwsem); | |
2351 | ||
2352 | memcpy(dst->entries, src->entries, SUM_ENTRY_SIZE); | |
2353 | memcpy(&dst->footer, &src->footer, SUM_FOOTER_SIZE); | |
2354 | ||
2355 | mutex_unlock(&curseg->curseg_mutex); | |
2356 | ||
2357 | set_page_dirty(page); | |
2358 | f2fs_put_page(page, 1); | |
2359 | } | |
2360 | ||
a7881893 JK |
2361 | static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) |
2362 | { | |
2363 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2364 | unsigned int segno = curseg->segno + 1; | |
2365 | struct free_segmap_info *free_i = FREE_I(sbi); | |
2366 | ||
2367 | if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) | |
2368 | return !test_bit(segno, free_i->free_segmap); | |
2369 | return 0; | |
2370 | } | |
2371 | ||
0a8165d7 | 2372 | /* |
351df4b2 JK |
2373 | * Find a new segment from the free segments bitmap to right order |
2374 | * This function should be returned with success, otherwise BUG | |
2375 | */ | |
2376 | static void get_new_segment(struct f2fs_sb_info *sbi, | |
2377 | unsigned int *newseg, bool new_sec, int dir) | |
2378 | { | |
2379 | struct free_segmap_info *free_i = FREE_I(sbi); | |
351df4b2 | 2380 | unsigned int segno, secno, zoneno; |
7cd8558b | 2381 | unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; |
4ddb1a4d JK |
2382 | unsigned int hint = GET_SEC_FROM_SEG(sbi, *newseg); |
2383 | unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg); | |
351df4b2 JK |
2384 | unsigned int left_start = hint; |
2385 | bool init = true; | |
2386 | int go_left = 0; | |
2387 | int i; | |
2388 | ||
1a118ccf | 2389 | spin_lock(&free_i->segmap_lock); |
351df4b2 JK |
2390 | |
2391 | if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { | |
2392 | segno = find_next_zero_bit(free_i->free_segmap, | |
4ddb1a4d JK |
2393 | GET_SEG_FROM_SEC(sbi, hint + 1), *newseg + 1); |
2394 | if (segno < GET_SEG_FROM_SEC(sbi, hint + 1)) | |
351df4b2 JK |
2395 | goto got_it; |
2396 | } | |
2397 | find_other_zone: | |
7cd8558b JK |
2398 | secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); |
2399 | if (secno >= MAIN_SECS(sbi)) { | |
351df4b2 JK |
2400 | if (dir == ALLOC_RIGHT) { |
2401 | secno = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2402 | MAIN_SECS(sbi), 0); |
2403 | f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2404 | } else { |
2405 | go_left = 1; | |
2406 | left_start = hint - 1; | |
2407 | } | |
2408 | } | |
2409 | if (go_left == 0) | |
2410 | goto skip_left; | |
2411 | ||
2412 | while (test_bit(left_start, free_i->free_secmap)) { | |
2413 | if (left_start > 0) { | |
2414 | left_start--; | |
2415 | continue; | |
2416 | } | |
2417 | left_start = find_next_zero_bit(free_i->free_secmap, | |
7cd8558b JK |
2418 | MAIN_SECS(sbi), 0); |
2419 | f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); | |
351df4b2 JK |
2420 | break; |
2421 | } | |
2422 | secno = left_start; | |
2423 | skip_left: | |
4ddb1a4d JK |
2424 | segno = GET_SEG_FROM_SEC(sbi, secno); |
2425 | zoneno = GET_ZONE_FROM_SEC(sbi, secno); | |
351df4b2 JK |
2426 | |
2427 | /* give up on finding another zone */ | |
2428 | if (!init) | |
2429 | goto got_it; | |
2430 | if (sbi->secs_per_zone == 1) | |
2431 | goto got_it; | |
2432 | if (zoneno == old_zoneno) | |
2433 | goto got_it; | |
2434 | if (dir == ALLOC_LEFT) { | |
2435 | if (!go_left && zoneno + 1 >= total_zones) | |
2436 | goto got_it; | |
2437 | if (go_left && zoneno == 0) | |
2438 | goto got_it; | |
2439 | } | |
2440 | for (i = 0; i < NR_CURSEG_TYPE; i++) | |
2441 | if (CURSEG_I(sbi, i)->zone == zoneno) | |
2442 | break; | |
2443 | ||
2444 | if (i < NR_CURSEG_TYPE) { | |
2445 | /* zone is in user, try another */ | |
2446 | if (go_left) | |
2447 | hint = zoneno * sbi->secs_per_zone - 1; | |
2448 | else if (zoneno + 1 >= total_zones) | |
2449 | hint = 0; | |
2450 | else | |
2451 | hint = (zoneno + 1) * sbi->secs_per_zone; | |
2452 | init = false; | |
2453 | goto find_other_zone; | |
2454 | } | |
2455 | got_it: | |
2456 | /* set it as dirty segment in free segmap */ | |
9850cf4a | 2457 | f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); |
351df4b2 JK |
2458 | __set_inuse(sbi, segno); |
2459 | *newseg = segno; | |
1a118ccf | 2460 | spin_unlock(&free_i->segmap_lock); |
351df4b2 JK |
2461 | } |
2462 | ||
2463 | static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified) | |
2464 | { | |
2465 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2466 | struct summary_footer *sum_footer; | |
2467 | ||
2468 | curseg->segno = curseg->next_segno; | |
4ddb1a4d | 2469 | curseg->zone = GET_ZONE_FROM_SEG(sbi, curseg->segno); |
351df4b2 JK |
2470 | curseg->next_blkoff = 0; |
2471 | curseg->next_segno = NULL_SEGNO; | |
2472 | ||
2473 | sum_footer = &(curseg->sum_blk->footer); | |
2474 | memset(sum_footer, 0, sizeof(struct summary_footer)); | |
2475 | if (IS_DATASEG(type)) | |
2476 | SET_SUM_TYPE(sum_footer, SUM_TYPE_DATA); | |
2477 | if (IS_NODESEG(type)) | |
2478 | SET_SUM_TYPE(sum_footer, SUM_TYPE_NODE); | |
2479 | __set_sit_entry_type(sbi, type, curseg->segno, modified); | |
2480 | } | |
2481 | ||
7a20b8a6 JK |
2482 | static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type) |
2483 | { | |
a7881893 | 2484 | /* if segs_per_sec is large than 1, we need to keep original policy. */ |
2c70c5e3 | 2485 | if (__is_large_section(sbi)) |
a7881893 JK |
2486 | return CURSEG_I(sbi, type)->segno; |
2487 | ||
4354994f DR |
2488 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
2489 | return 0; | |
2490 | ||
b94929d9 YS |
2491 | if (test_opt(sbi, NOHEAP) && |
2492 | (type == CURSEG_HOT_DATA || IS_NODESEG(type))) | |
7a20b8a6 JK |
2493 | return 0; |
2494 | ||
e066b83c JK |
2495 | if (SIT_I(sbi)->last_victim[ALLOC_NEXT]) |
2496 | return SIT_I(sbi)->last_victim[ALLOC_NEXT]; | |
07939627 JK |
2497 | |
2498 | /* find segments from 0 to reuse freed segments */ | |
63189b78 | 2499 | if (F2FS_OPTION(sbi).alloc_mode == ALLOC_MODE_REUSE) |
07939627 JK |
2500 | return 0; |
2501 | ||
7a20b8a6 JK |
2502 | return CURSEG_I(sbi, type)->segno; |
2503 | } | |
2504 | ||
0a8165d7 | 2505 | /* |
351df4b2 JK |
2506 | * Allocate a current working segment. |
2507 | * This function always allocates a free segment in LFS manner. | |
2508 | */ | |
2509 | static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec) | |
2510 | { | |
2511 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2512 | unsigned int segno = curseg->segno; | |
2513 | int dir = ALLOC_LEFT; | |
2514 | ||
2515 | write_sum_page(sbi, curseg->sum_blk, | |
81fb5e87 | 2516 | GET_SUM_BLOCK(sbi, segno)); |
351df4b2 JK |
2517 | if (type == CURSEG_WARM_DATA || type == CURSEG_COLD_DATA) |
2518 | dir = ALLOC_RIGHT; | |
2519 | ||
2520 | if (test_opt(sbi, NOHEAP)) | |
2521 | dir = ALLOC_RIGHT; | |
2522 | ||
7a20b8a6 | 2523 | segno = __get_next_segno(sbi, type); |
351df4b2 JK |
2524 | get_new_segment(sbi, &segno, new_sec, dir); |
2525 | curseg->next_segno = segno; | |
2526 | reset_curseg(sbi, type, 1); | |
2527 | curseg->alloc_type = LFS; | |
2528 | } | |
2529 | ||
2530 | static void __next_free_blkoff(struct f2fs_sb_info *sbi, | |
2531 | struct curseg_info *seg, block_t start) | |
2532 | { | |
2533 | struct seg_entry *se = get_seg_entry(sbi, seg->segno); | |
e81c93cf | 2534 | int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); |
60a3b782 | 2535 | unsigned long *target_map = SIT_I(sbi)->tmp_map; |
e81c93cf CL |
2536 | unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; |
2537 | unsigned long *cur_map = (unsigned long *)se->cur_valid_map; | |
2538 | int i, pos; | |
2539 | ||
2540 | for (i = 0; i < entries; i++) | |
2541 | target_map[i] = ckpt_map[i] | cur_map[i]; | |
2542 | ||
2543 | pos = __find_rev_next_zero_bit(target_map, sbi->blocks_per_seg, start); | |
2544 | ||
2545 | seg->next_blkoff = pos; | |
351df4b2 JK |
2546 | } |
2547 | ||
0a8165d7 | 2548 | /* |
351df4b2 JK |
2549 | * If a segment is written by LFS manner, next block offset is just obtained |
2550 | * by increasing the current block offset. However, if a segment is written by | |
2551 | * SSR manner, next block offset obtained by calling __next_free_blkoff | |
2552 | */ | |
2553 | static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, | |
2554 | struct curseg_info *seg) | |
2555 | { | |
2556 | if (seg->alloc_type == SSR) | |
2557 | __next_free_blkoff(sbi, seg, seg->next_blkoff + 1); | |
2558 | else | |
2559 | seg->next_blkoff++; | |
2560 | } | |
2561 | ||
0a8165d7 | 2562 | /* |
e1c42045 | 2563 | * This function always allocates a used segment(from dirty seglist) by SSR |
351df4b2 JK |
2564 | * manner, so it should recover the existing segment information of valid blocks |
2565 | */ | |
025d63a4 | 2566 | static void change_curseg(struct f2fs_sb_info *sbi, int type) |
351df4b2 JK |
2567 | { |
2568 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
2569 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2570 | unsigned int new_segno = curseg->next_segno; | |
2571 | struct f2fs_summary_block *sum_node; | |
2572 | struct page *sum_page; | |
2573 | ||
2574 | write_sum_page(sbi, curseg->sum_blk, | |
2575 | GET_SUM_BLOCK(sbi, curseg->segno)); | |
2576 | __set_test_and_inuse(sbi, new_segno); | |
2577 | ||
2578 | mutex_lock(&dirty_i->seglist_lock); | |
2579 | __remove_dirty_segment(sbi, new_segno, PRE); | |
2580 | __remove_dirty_segment(sbi, new_segno, DIRTY); | |
2581 | mutex_unlock(&dirty_i->seglist_lock); | |
2582 | ||
2583 | reset_curseg(sbi, type, 1); | |
2584 | curseg->alloc_type = SSR; | |
2585 | __next_free_blkoff(sbi, curseg, 0); | |
2586 | ||
4d57b86d | 2587 | sum_page = f2fs_get_sum_page(sbi, new_segno); |
edc55aaf | 2588 | f2fs_bug_on(sbi, IS_ERR(sum_page)); |
025d63a4 CY |
2589 | sum_node = (struct f2fs_summary_block *)page_address(sum_page); |
2590 | memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); | |
2591 | f2fs_put_page(sum_page, 1); | |
351df4b2 JK |
2592 | } |
2593 | ||
43727527 JK |
2594 | static int get_ssr_segment(struct f2fs_sb_info *sbi, int type) |
2595 | { | |
2596 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2597 | const struct victim_selection *v_ops = DIRTY_I(sbi)->v_ops; | |
e066b83c | 2598 | unsigned segno = NULL_SEGNO; |
d27c3d89 CY |
2599 | int i, cnt; |
2600 | bool reversed = false; | |
c192f7a4 | 2601 | |
4d57b86d | 2602 | /* f2fs_need_SSR() already forces to do this */ |
e066b83c JK |
2603 | if (v_ops->get_victim(sbi, &segno, BG_GC, type, SSR)) { |
2604 | curseg->next_segno = segno; | |
c192f7a4 | 2605 | return 1; |
e066b83c | 2606 | } |
43727527 | 2607 | |
70d625cb JK |
2608 | /* For node segments, let's do SSR more intensively */ |
2609 | if (IS_NODESEG(type)) { | |
d27c3d89 CY |
2610 | if (type >= CURSEG_WARM_NODE) { |
2611 | reversed = true; | |
2612 | i = CURSEG_COLD_NODE; | |
2613 | } else { | |
2614 | i = CURSEG_HOT_NODE; | |
2615 | } | |
2616 | cnt = NR_CURSEG_NODE_TYPE; | |
70d625cb | 2617 | } else { |
d27c3d89 CY |
2618 | if (type >= CURSEG_WARM_DATA) { |
2619 | reversed = true; | |
2620 | i = CURSEG_COLD_DATA; | |
2621 | } else { | |
2622 | i = CURSEG_HOT_DATA; | |
2623 | } | |
2624 | cnt = NR_CURSEG_DATA_TYPE; | |
70d625cb | 2625 | } |
43727527 | 2626 | |
d27c3d89 | 2627 | for (; cnt-- > 0; reversed ? i-- : i++) { |
c192f7a4 JK |
2628 | if (i == type) |
2629 | continue; | |
e066b83c JK |
2630 | if (v_ops->get_victim(sbi, &segno, BG_GC, i, SSR)) { |
2631 | curseg->next_segno = segno; | |
43727527 | 2632 | return 1; |
e066b83c | 2633 | } |
c192f7a4 | 2634 | } |
4354994f DR |
2635 | |
2636 | /* find valid_blocks=0 in dirty list */ | |
2637 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { | |
2638 | segno = get_free_segment(sbi); | |
2639 | if (segno != NULL_SEGNO) { | |
2640 | curseg->next_segno = segno; | |
2641 | return 1; | |
2642 | } | |
2643 | } | |
43727527 JK |
2644 | return 0; |
2645 | } | |
2646 | ||
351df4b2 JK |
2647 | /* |
2648 | * flush out current segment and replace it with new segment | |
2649 | * This function should be returned with success, otherwise BUG | |
2650 | */ | |
2651 | static void allocate_segment_by_default(struct f2fs_sb_info *sbi, | |
2652 | int type, bool force) | |
2653 | { | |
a7881893 JK |
2654 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
2655 | ||
7b405275 | 2656 | if (force) |
351df4b2 | 2657 | new_curseg(sbi, type, true); |
5b6c6be2 JK |
2658 | else if (!is_set_ckpt_flags(sbi, CP_CRC_RECOVERY_FLAG) && |
2659 | type == CURSEG_WARM_NODE) | |
351df4b2 | 2660 | new_curseg(sbi, type, false); |
4354994f DR |
2661 | else if (curseg->alloc_type == LFS && is_next_segment_free(sbi, type) && |
2662 | likely(!is_sbi_flag_set(sbi, SBI_CP_DISABLED))) | |
a7881893 | 2663 | new_curseg(sbi, type, false); |
4d57b86d | 2664 | else if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type)) |
025d63a4 | 2665 | change_curseg(sbi, type); |
351df4b2 JK |
2666 | else |
2667 | new_curseg(sbi, type, false); | |
dcdfff65 | 2668 | |
a7881893 | 2669 | stat_inc_seg_type(sbi, curseg); |
351df4b2 JK |
2670 | } |
2671 | ||
04f0b2ea QS |
2672 | void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type, |
2673 | unsigned int start, unsigned int end) | |
2674 | { | |
2675 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2676 | unsigned int segno; | |
2677 | ||
2678 | down_read(&SM_I(sbi)->curseg_lock); | |
2679 | mutex_lock(&curseg->curseg_mutex); | |
2680 | down_write(&SIT_I(sbi)->sentry_lock); | |
2681 | ||
2682 | segno = CURSEG_I(sbi, type)->segno; | |
2683 | if (segno < start || segno > end) | |
2684 | goto unlock; | |
2685 | ||
2686 | if (f2fs_need_SSR(sbi) && get_ssr_segment(sbi, type)) | |
2687 | change_curseg(sbi, type); | |
2688 | else | |
2689 | new_curseg(sbi, type, true); | |
2690 | ||
2691 | stat_inc_seg_type(sbi, curseg); | |
2692 | ||
2693 | locate_dirty_segment(sbi, segno); | |
2694 | unlock: | |
2695 | up_write(&SIT_I(sbi)->sentry_lock); | |
2696 | ||
2697 | if (segno != curseg->segno) | |
dcbb4c10 JP |
2698 | f2fs_notice(sbi, "For resize: curseg of type %d: %u ==> %u", |
2699 | type, segno, curseg->segno); | |
04f0b2ea QS |
2700 | |
2701 | mutex_unlock(&curseg->curseg_mutex); | |
2702 | up_read(&SM_I(sbi)->curseg_lock); | |
2703 | } | |
2704 | ||
f5a53edc | 2705 | void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi, int type) |
351df4b2 | 2706 | { |
6ae1be13 JK |
2707 | struct curseg_info *curseg; |
2708 | unsigned int old_segno; | |
351df4b2 JK |
2709 | int i; |
2710 | ||
3d26fa6b CY |
2711 | down_write(&SIT_I(sbi)->sentry_lock); |
2712 | ||
6ae1be13 | 2713 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { |
f5a53edc JK |
2714 | if (type != NO_CHECK_TYPE && i != type) |
2715 | continue; | |
2716 | ||
6ae1be13 | 2717 | curseg = CURSEG_I(sbi, i); |
f5a53edc JK |
2718 | if (type == NO_CHECK_TYPE || curseg->next_blkoff || |
2719 | get_valid_blocks(sbi, curseg->segno, false) || | |
2720 | get_ckpt_valid_blocks(sbi, curseg->segno)) { | |
2721 | old_segno = curseg->segno; | |
2722 | SIT_I(sbi)->s_ops->allocate_segment(sbi, i, true); | |
2723 | locate_dirty_segment(sbi, old_segno); | |
2724 | } | |
6ae1be13 | 2725 | } |
3d26fa6b CY |
2726 | |
2727 | up_write(&SIT_I(sbi)->sentry_lock); | |
351df4b2 JK |
2728 | } |
2729 | ||
2730 | static const struct segment_allocation default_salloc_ops = { | |
2731 | .allocate_segment = allocate_segment_by_default, | |
2732 | }; | |
2733 | ||
4d57b86d CY |
2734 | bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi, |
2735 | struct cp_control *cpc) | |
25290fa5 JK |
2736 | { |
2737 | __u64 trim_start = cpc->trim_start; | |
2738 | bool has_candidate = false; | |
2739 | ||
3d26fa6b | 2740 | down_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2741 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) { |
2742 | if (add_discard_addrs(sbi, cpc, true)) { | |
2743 | has_candidate = true; | |
2744 | break; | |
2745 | } | |
2746 | } | |
3d26fa6b | 2747 | up_write(&SIT_I(sbi)->sentry_lock); |
25290fa5 JK |
2748 | |
2749 | cpc->trim_start = trim_start; | |
2750 | return has_candidate; | |
2751 | } | |
2752 | ||
01f9cf6d | 2753 | static unsigned int __issue_discard_cmd_range(struct f2fs_sb_info *sbi, |
9a997188 JK |
2754 | struct discard_policy *dpolicy, |
2755 | unsigned int start, unsigned int end) | |
2756 | { | |
2757 | struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; | |
2758 | struct discard_cmd *prev_dc = NULL, *next_dc = NULL; | |
2759 | struct rb_node **insert_p = NULL, *insert_parent = NULL; | |
2760 | struct discard_cmd *dc; | |
2761 | struct blk_plug plug; | |
2762 | int issued; | |
01f9cf6d | 2763 | unsigned int trimmed = 0; |
9a997188 JK |
2764 | |
2765 | next: | |
2766 | issued = 0; | |
2767 | ||
2768 | mutex_lock(&dcc->cmd_lock); | |
67fce70b CY |
2769 | if (unlikely(dcc->rbtree_check)) |
2770 | f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi, | |
2771 | &dcc->root)); | |
9a997188 | 2772 | |
4d57b86d | 2773 | dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root, |
9a997188 JK |
2774 | NULL, start, |
2775 | (struct rb_entry **)&prev_dc, | |
2776 | (struct rb_entry **)&next_dc, | |
4dada3fd | 2777 | &insert_p, &insert_parent, true, NULL); |
9a997188 JK |
2778 | if (!dc) |
2779 | dc = next_dc; | |
2780 | ||
2781 | blk_start_plug(&plug); | |
2782 | ||
2783 | while (dc && dc->lstart <= end) { | |
2784 | struct rb_node *node; | |
6b9cb124 | 2785 | int err = 0; |
9a997188 JK |
2786 | |
2787 | if (dc->len < dpolicy->granularity) | |
2788 | goto skip; | |
2789 | ||
2790 | if (dc->state != D_PREP) { | |
2791 | list_move_tail(&dc->list, &dcc->fstrim_list); | |
2792 | goto skip; | |
2793 | } | |
2794 | ||
6b9cb124 | 2795 | err = __submit_discard_cmd(sbi, dpolicy, dc, &issued); |
9a997188 | 2796 | |
35ec7d57 | 2797 | if (issued >= dpolicy->max_requests) { |
9a997188 JK |
2798 | start = dc->lstart + dc->len; |
2799 | ||
6b9cb124 CY |
2800 | if (err) |
2801 | __remove_discard_cmd(sbi, dc); | |
2802 | ||
9a997188 JK |
2803 | blk_finish_plug(&plug); |
2804 | mutex_unlock(&dcc->cmd_lock); | |
01f9cf6d | 2805 | trimmed += __wait_all_discard_cmd(sbi, NULL); |
5df7731f | 2806 | congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); |
9a997188 JK |
2807 | goto next; |
2808 | } | |
2809 | skip: | |
2810 | node = rb_next(&dc->rb_node); | |
6b9cb124 CY |
2811 | if (err) |
2812 | __remove_discard_cmd(sbi, dc); | |
9a997188 JK |
2813 | dc = rb_entry_safe(node, struct discard_cmd, rb_node); |
2814 | ||
2815 | if (fatal_signal_pending(current)) | |
2816 | break; | |
2817 | } | |
2818 | ||
2819 | blk_finish_plug(&plug); | |
2820 | mutex_unlock(&dcc->cmd_lock); | |
01f9cf6d CY |
2821 | |
2822 | return trimmed; | |
9a997188 JK |
2823 | } |
2824 | ||
4b2fecc8 JK |
2825 | int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) |
2826 | { | |
f7ef9b83 JK |
2827 | __u64 start = F2FS_BYTES_TO_BLK(range->start); |
2828 | __u64 end = start + F2FS_BYTES_TO_BLK(range->len) - 1; | |
377224c4 | 2829 | unsigned int start_segno, end_segno; |
8412663d | 2830 | block_t start_block, end_block; |
4b2fecc8 | 2831 | struct cp_control cpc; |
78997b56 | 2832 | struct discard_policy dpolicy; |
0ea80512 | 2833 | unsigned long long trimmed = 0; |
c34f42e2 | 2834 | int err = 0; |
b0332a0f | 2835 | bool need_align = f2fs_lfs_mode(sbi) && __is_large_section(sbi); |
4b2fecc8 | 2836 | |
836b5a63 | 2837 | if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize) |
4b2fecc8 JK |
2838 | return -EINVAL; |
2839 | ||
3f16ecd9 CY |
2840 | if (end < MAIN_BLKADDR(sbi)) |
2841 | goto out; | |
4b2fecc8 | 2842 | |
ed214a11 | 2843 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) { |
dcbb4c10 | 2844 | f2fs_warn(sbi, "Found FS corruption, run fsck to fix."); |
10f966bb | 2845 | return -EFSCORRUPTED; |
ed214a11 YH |
2846 | } |
2847 | ||
4b2fecc8 | 2848 | /* start/end segment number in main_area */ |
7cd8558b JK |
2849 | start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); |
2850 | end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : | |
2851 | GET_SEGNO(sbi, end); | |
ad6672bb YS |
2852 | if (need_align) { |
2853 | start_segno = rounddown(start_segno, sbi->segs_per_sec); | |
2854 | end_segno = roundup(end_segno + 1, sbi->segs_per_sec) - 1; | |
2855 | } | |
8412663d | 2856 | |
4b2fecc8 | 2857 | cpc.reason = CP_DISCARD; |
836b5a63 | 2858 | cpc.trim_minlen = max_t(__u64, 1, F2FS_BYTES_TO_BLK(range->minlen)); |
377224c4 CY |
2859 | cpc.trim_start = start_segno; |
2860 | cpc.trim_end = end_segno; | |
4b2fecc8 | 2861 | |
377224c4 CY |
2862 | if (sbi->discard_blks == 0) |
2863 | goto out; | |
74fa5f3d | 2864 | |
fb24fea7 | 2865 | down_write(&sbi->gc_lock); |
4d57b86d | 2866 | err = f2fs_write_checkpoint(sbi, &cpc); |
fb24fea7 | 2867 | up_write(&sbi->gc_lock); |
377224c4 CY |
2868 | if (err) |
2869 | goto out; | |
8412663d | 2870 | |
e555da9f JK |
2871 | /* |
2872 | * We filed discard candidates, but actually we don't need to wait for | |
2873 | * all of them, since they'll be issued in idle time along with runtime | |
2874 | * discard option. User configuration looks like using runtime discard | |
2875 | * or periodic fstrim instead of it. | |
2876 | */ | |
7d20c8ab | 2877 | if (f2fs_realtime_discard_enable(sbi)) |
5a615492 JK |
2878 | goto out; |
2879 | ||
2880 | start_block = START_BLOCK(sbi, start_segno); | |
2881 | end_block = START_BLOCK(sbi, end_segno + 1); | |
2882 | ||
2883 | __init_discard_policy(sbi, &dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen); | |
01f9cf6d CY |
2884 | trimmed = __issue_discard_cmd_range(sbi, &dpolicy, |
2885 | start_block, end_block); | |
5a615492 | 2886 | |
01f9cf6d | 2887 | trimmed += __wait_discard_cmd_range(sbi, &dpolicy, |
0ea80512 | 2888 | start_block, end_block); |
377224c4 | 2889 | out: |
6eae2694 CY |
2890 | if (!err) |
2891 | range->len = F2FS_BLK_TO_BYTES(trimmed); | |
c34f42e2 | 2892 | return err; |
4b2fecc8 JK |
2893 | } |
2894 | ||
351df4b2 JK |
2895 | static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) |
2896 | { | |
2897 | struct curseg_info *curseg = CURSEG_I(sbi, type); | |
2898 | if (curseg->next_blkoff < sbi->blocks_per_seg) | |
2899 | return true; | |
2900 | return false; | |
2901 | } | |
2902 | ||
4d57b86d | 2903 | int f2fs_rw_hint_to_seg_type(enum rw_hint hint) |
4f0a03d3 HL |
2904 | { |
2905 | switch (hint) { | |
2906 | case WRITE_LIFE_SHORT: | |
2907 | return CURSEG_HOT_DATA; | |
2908 | case WRITE_LIFE_EXTREME: | |
2909 | return CURSEG_COLD_DATA; | |
2910 | default: | |
2911 | return CURSEG_WARM_DATA; | |
2912 | } | |
2913 | } | |
2914 | ||
0cdd3195 HL |
2915 | /* This returns write hints for each segment type. This hints will be |
2916 | * passed down to block layer. There are mapping tables which depend on | |
2917 | * the mount option 'whint_mode'. | |
2918 | * | |
2919 | * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET. | |
2920 | * | |
2921 | * 2) whint_mode=user-based. F2FS tries to pass down hints given by users. | |
2922 | * | |
2923 | * User F2FS Block | |
2924 | * ---- ---- ----- | |
2925 | * META WRITE_LIFE_NOT_SET | |
2926 | * HOT_NODE " | |
2927 | * WARM_NODE " | |
2928 | * COLD_NODE " | |
2929 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2930 | * extension list " " | |
2931 | * | |
2932 | * -- buffered io | |
2933 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2934 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2935 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2936 | * WRITE_LIFE_NONE " " | |
2937 | * WRITE_LIFE_MEDIUM " " | |
2938 | * WRITE_LIFE_LONG " " | |
2939 | * | |
2940 | * -- direct io | |
2941 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2942 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2943 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2944 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2945 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2946 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
2947 | * | |
f2e703f9 HL |
2948 | * 3) whint_mode=fs-based. F2FS passes down hints with its policy. |
2949 | * | |
2950 | * User F2FS Block | |
2951 | * ---- ---- ----- | |
2952 | * META WRITE_LIFE_MEDIUM; | |
2953 | * HOT_NODE WRITE_LIFE_NOT_SET | |
2954 | * WARM_NODE " | |
2955 | * COLD_NODE WRITE_LIFE_NONE | |
2956 | * ioctl(COLD) COLD_DATA WRITE_LIFE_EXTREME | |
2957 | * extension list " " | |
2958 | * | |
2959 | * -- buffered io | |
2960 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2961 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2962 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_LONG | |
2963 | * WRITE_LIFE_NONE " " | |
2964 | * WRITE_LIFE_MEDIUM " " | |
2965 | * WRITE_LIFE_LONG " " | |
2966 | * | |
2967 | * -- direct io | |
2968 | * WRITE_LIFE_EXTREME COLD_DATA WRITE_LIFE_EXTREME | |
2969 | * WRITE_LIFE_SHORT HOT_DATA WRITE_LIFE_SHORT | |
2970 | * WRITE_LIFE_NOT_SET WARM_DATA WRITE_LIFE_NOT_SET | |
2971 | * WRITE_LIFE_NONE " WRITE_LIFE_NONE | |
2972 | * WRITE_LIFE_MEDIUM " WRITE_LIFE_MEDIUM | |
2973 | * WRITE_LIFE_LONG " WRITE_LIFE_LONG | |
0cdd3195 HL |
2974 | */ |
2975 | ||
4d57b86d | 2976 | enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi, |
0cdd3195 HL |
2977 | enum page_type type, enum temp_type temp) |
2978 | { | |
63189b78 | 2979 | if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) { |
0cdd3195 | 2980 | if (type == DATA) { |
f2e703f9 | 2981 | if (temp == WARM) |
0cdd3195 | 2982 | return WRITE_LIFE_NOT_SET; |
f2e703f9 HL |
2983 | else if (temp == HOT) |
2984 | return WRITE_LIFE_SHORT; | |
2985 | else if (temp == COLD) | |
2986 | return WRITE_LIFE_EXTREME; | |
0cdd3195 HL |
2987 | } else { |
2988 | return WRITE_LIFE_NOT_SET; | |
2989 | } | |
63189b78 | 2990 | } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) { |
f2e703f9 HL |
2991 | if (type == DATA) { |
2992 | if (temp == WARM) | |
2993 | return WRITE_LIFE_LONG; | |
2994 | else if (temp == HOT) | |
2995 | return WRITE_LIFE_SHORT; | |
2996 | else if (temp == COLD) | |
2997 | return WRITE_LIFE_EXTREME; | |
2998 | } else if (type == NODE) { | |
2999 | if (temp == WARM || temp == HOT) | |
3000 | return WRITE_LIFE_NOT_SET; | |
3001 | else if (temp == COLD) | |
3002 | return WRITE_LIFE_NONE; | |
3003 | } else if (type == META) { | |
3004 | return WRITE_LIFE_MEDIUM; | |
3005 | } | |
0cdd3195 | 3006 | } |
f2e703f9 | 3007 | return WRITE_LIFE_NOT_SET; |
0cdd3195 HL |
3008 | } |
3009 | ||
81377bd6 | 3010 | static int __get_segment_type_2(struct f2fs_io_info *fio) |
351df4b2 | 3011 | { |
81377bd6 | 3012 | if (fio->type == DATA) |
351df4b2 JK |
3013 | return CURSEG_HOT_DATA; |
3014 | else | |
3015 | return CURSEG_HOT_NODE; | |
3016 | } | |
3017 | ||
81377bd6 | 3018 | static int __get_segment_type_4(struct f2fs_io_info *fio) |
351df4b2 | 3019 | { |
81377bd6 JK |
3020 | if (fio->type == DATA) { |
3021 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 JK |
3022 | |
3023 | if (S_ISDIR(inode->i_mode)) | |
3024 | return CURSEG_HOT_DATA; | |
3025 | else | |
3026 | return CURSEG_COLD_DATA; | |
3027 | } else { | |
81377bd6 | 3028 | if (IS_DNODE(fio->page) && is_cold_node(fio->page)) |
a344b9fd | 3029 | return CURSEG_WARM_NODE; |
351df4b2 JK |
3030 | else |
3031 | return CURSEG_COLD_NODE; | |
3032 | } | |
3033 | } | |
3034 | ||
81377bd6 | 3035 | static int __get_segment_type_6(struct f2fs_io_info *fio) |
351df4b2 | 3036 | { |
81377bd6 JK |
3037 | if (fio->type == DATA) { |
3038 | struct inode *inode = fio->page->mapping->host; | |
351df4b2 | 3039 | |
4c8ff709 CY |
3040 | if (is_cold_data(fio->page) || file_is_cold(inode) || |
3041 | f2fs_compressed_file(inode)) | |
351df4b2 | 3042 | return CURSEG_COLD_DATA; |
b6a06cbb | 3043 | if (file_is_hot(inode) || |
b4c3ca8b | 3044 | is_inode_flag_set(inode, FI_HOT_DATA) || |
2079f115 CY |
3045 | f2fs_is_atomic_file(inode) || |
3046 | f2fs_is_volatile_file(inode)) | |
ef095d19 | 3047 | return CURSEG_HOT_DATA; |
4d57b86d | 3048 | return f2fs_rw_hint_to_seg_type(inode->i_write_hint); |
351df4b2 | 3049 | } else { |
81377bd6 JK |
3050 | if (IS_DNODE(fio->page)) |
3051 | return is_cold_node(fio->page) ? CURSEG_WARM_NODE : | |
351df4b2 | 3052 | CURSEG_HOT_NODE; |
ef095d19 | 3053 | return CURSEG_COLD_NODE; |
351df4b2 JK |
3054 | } |
3055 | } | |
3056 | ||
81377bd6 | 3057 | static int __get_segment_type(struct f2fs_io_info *fio) |
351df4b2 | 3058 | { |
a912b54d JK |
3059 | int type = 0; |
3060 | ||
63189b78 | 3061 | switch (F2FS_OPTION(fio->sbi).active_logs) { |
351df4b2 | 3062 | case 2: |
a912b54d JK |
3063 | type = __get_segment_type_2(fio); |
3064 | break; | |
351df4b2 | 3065 | case 4: |
a912b54d JK |
3066 | type = __get_segment_type_4(fio); |
3067 | break; | |
3068 | case 6: | |
3069 | type = __get_segment_type_6(fio); | |
3070 | break; | |
3071 | default: | |
3072 | f2fs_bug_on(fio->sbi, true); | |
351df4b2 | 3073 | } |
81377bd6 | 3074 | |
a912b54d JK |
3075 | if (IS_HOT(type)) |
3076 | fio->temp = HOT; | |
3077 | else if (IS_WARM(type)) | |
3078 | fio->temp = WARM; | |
3079 | else | |
3080 | fio->temp = COLD; | |
3081 | return type; | |
351df4b2 JK |
3082 | } |
3083 | ||
4d57b86d | 3084 | void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page, |
bfad7c2d | 3085 | block_t old_blkaddr, block_t *new_blkaddr, |
fb830fc5 CY |
3086 | struct f2fs_summary *sum, int type, |
3087 | struct f2fs_io_info *fio, bool add_list) | |
351df4b2 JK |
3088 | { |
3089 | struct sit_info *sit_i = SIT_I(sbi); | |
6ae1be13 | 3090 | struct curseg_info *curseg = CURSEG_I(sbi, type); |
f5a53edc JK |
3091 | bool put_pin_sem = false; |
3092 | ||
3093 | if (type == CURSEG_COLD_DATA) { | |
3094 | /* GC during CURSEG_COLD_DATA_PINNED allocation */ | |
3095 | if (down_read_trylock(&sbi->pin_sem)) { | |
3096 | put_pin_sem = true; | |
3097 | } else { | |
3098 | type = CURSEG_WARM_DATA; | |
3099 | curseg = CURSEG_I(sbi, type); | |
3100 | } | |
3101 | } else if (type == CURSEG_COLD_DATA_PINNED) { | |
3102 | type = CURSEG_COLD_DATA; | |
3103 | } | |
351df4b2 | 3104 | |
2b60311d CY |
3105 | down_read(&SM_I(sbi)->curseg_lock); |
3106 | ||
351df4b2 | 3107 | mutex_lock(&curseg->curseg_mutex); |
3d26fa6b | 3108 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3109 | |
3110 | *new_blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); | |
351df4b2 | 3111 | |
4e6a8d9b JK |
3112 | f2fs_wait_discard_bio(sbi, *new_blkaddr); |
3113 | ||
351df4b2 JK |
3114 | /* |
3115 | * __add_sum_entry should be resided under the curseg_mutex | |
3116 | * because, this function updates a summary entry in the | |
3117 | * current summary block. | |
3118 | */ | |
e79efe3b | 3119 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 3120 | |
351df4b2 | 3121 | __refresh_next_blkoff(sbi, curseg); |
dcdfff65 JK |
3122 | |
3123 | stat_inc_block_count(sbi, curseg); | |
351df4b2 | 3124 | |
65f1b80b YS |
3125 | /* |
3126 | * SIT information should be updated before segment allocation, | |
3127 | * since SSR needs latest valid block information. | |
3128 | */ | |
3129 | update_sit_entry(sbi, *new_blkaddr, 1); | |
3130 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) | |
3131 | update_sit_entry(sbi, old_blkaddr, -1); | |
3132 | ||
c6f82fe9 JK |
3133 | if (!__has_curseg_space(sbi, type)) |
3134 | sit_i->s_ops->allocate_segment(sbi, type, false); | |
65f1b80b | 3135 | |
351df4b2 | 3136 | /* |
65f1b80b YS |
3137 | * segment dirty status should be updated after segment allocation, |
3138 | * so we just need to update status only one time after previous | |
3139 | * segment being closed. | |
351df4b2 | 3140 | */ |
65f1b80b YS |
3141 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); |
3142 | locate_dirty_segment(sbi, GET_SEGNO(sbi, *new_blkaddr)); | |
5e443818 | 3143 | |
3d26fa6b | 3144 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3145 | |
704956ec | 3146 | if (page && IS_NODESEG(type)) { |
351df4b2 JK |
3147 | fill_node_footer_blkaddr(page, NEXT_FREE_BLKADDR(sbi, curseg)); |
3148 | ||
704956ec CY |
3149 | f2fs_inode_chksum_set(sbi, page); |
3150 | } | |
3151 | ||
8223ecc4 CY |
3152 | if (F2FS_IO_ALIGNED(sbi)) |
3153 | fio->retry = false; | |
3154 | ||
fb830fc5 CY |
3155 | if (add_list) { |
3156 | struct f2fs_bio_info *io; | |
3157 | ||
3158 | INIT_LIST_HEAD(&fio->list); | |
3159 | fio->in_list = true; | |
3160 | io = sbi->write_io[fio->type] + fio->temp; | |
3161 | spin_lock(&io->io_lock); | |
3162 | list_add_tail(&fio->list, &io->io_list); | |
3163 | spin_unlock(&io->io_lock); | |
3164 | } | |
3165 | ||
bfad7c2d | 3166 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d CY |
3167 | |
3168 | up_read(&SM_I(sbi)->curseg_lock); | |
f5a53edc JK |
3169 | |
3170 | if (put_pin_sem) | |
3171 | up_read(&sbi->pin_sem); | |
bfad7c2d JK |
3172 | } |
3173 | ||
39d787be CY |
3174 | static void update_device_state(struct f2fs_io_info *fio) |
3175 | { | |
3176 | struct f2fs_sb_info *sbi = fio->sbi; | |
3177 | unsigned int devidx; | |
3178 | ||
0916878d | 3179 | if (!f2fs_is_multi_device(sbi)) |
39d787be CY |
3180 | return; |
3181 | ||
3182 | devidx = f2fs_target_device_index(sbi, fio->new_blkaddr); | |
3183 | ||
3184 | /* update device state for fsync */ | |
4d57b86d | 3185 | f2fs_set_dirty_device(sbi, fio->ino, devidx, FLUSH_INO); |
1228b482 CY |
3186 | |
3187 | /* update device state for checkpoint */ | |
3188 | if (!f2fs_test_bit(devidx, (char *)&sbi->dirty_device)) { | |
3189 | spin_lock(&sbi->dev_lock); | |
3190 | f2fs_set_bit(devidx, (char *)&sbi->dirty_device); | |
3191 | spin_unlock(&sbi->dev_lock); | |
3192 | } | |
39d787be CY |
3193 | } |
3194 | ||
05ca3632 | 3195 | static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) |
bfad7c2d | 3196 | { |
81377bd6 | 3197 | int type = __get_segment_type(fio); |
b0332a0f | 3198 | bool keep_order = (f2fs_lfs_mode(fio->sbi) && type == CURSEG_COLD_DATA); |
bfad7c2d | 3199 | |
107a805d CY |
3200 | if (keep_order) |
3201 | down_read(&fio->sbi->io_order_lock); | |
0a595eba | 3202 | reallocate: |
4d57b86d | 3203 | f2fs_allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, |
fb830fc5 | 3204 | &fio->new_blkaddr, sum, type, fio, true); |
6aa58d8a CY |
3205 | if (GET_SEGNO(fio->sbi, fio->old_blkaddr) != NULL_SEGNO) |
3206 | invalidate_mapping_pages(META_MAPPING(fio->sbi), | |
3207 | fio->old_blkaddr, fio->old_blkaddr); | |
bfad7c2d | 3208 | |
351df4b2 | 3209 | /* writeout dirty page into bdev */ |
fe16efe6 CY |
3210 | f2fs_submit_page_write(fio); |
3211 | if (fio->retry) { | |
0a595eba JK |
3212 | fio->old_blkaddr = fio->new_blkaddr; |
3213 | goto reallocate; | |
3214 | } | |
fe16efe6 CY |
3215 | |
3216 | update_device_state(fio); | |
3217 | ||
107a805d CY |
3218 | if (keep_order) |
3219 | up_read(&fio->sbi->io_order_lock); | |
351df4b2 JK |
3220 | } |
3221 | ||
4d57b86d | 3222 | void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page, |
b0af6d49 | 3223 | enum iostat_type io_type) |
351df4b2 | 3224 | { |
458e6197 | 3225 | struct f2fs_io_info fio = { |
05ca3632 | 3226 | .sbi = sbi, |
458e6197 | 3227 | .type = META, |
0cdd3195 | 3228 | .temp = HOT, |
04d328de | 3229 | .op = REQ_OP_WRITE, |
70fd7614 | 3230 | .op_flags = REQ_SYNC | REQ_META | REQ_PRIO, |
7a9d7548 CY |
3231 | .old_blkaddr = page->index, |
3232 | .new_blkaddr = page->index, | |
05ca3632 | 3233 | .page = page, |
4375a336 | 3234 | .encrypted_page = NULL, |
fb830fc5 | 3235 | .in_list = false, |
458e6197 JK |
3236 | }; |
3237 | ||
2b947003 | 3238 | if (unlikely(page->index >= MAIN_BLKADDR(sbi))) |
04d328de | 3239 | fio.op_flags &= ~REQ_META; |
2b947003 | 3240 | |
351df4b2 | 3241 | set_page_writeback(page); |
17c50035 | 3242 | ClearPageError(page); |
b9109b0e | 3243 | f2fs_submit_page_write(&fio); |
b0af6d49 | 3244 | |
b63e7be5 | 3245 | stat_inc_meta_count(sbi, page->index); |
b0af6d49 | 3246 | f2fs_update_iostat(sbi, io_type, F2FS_BLKSIZE); |
351df4b2 JK |
3247 | } |
3248 | ||
4d57b86d | 3249 | void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio) |
351df4b2 JK |
3250 | { |
3251 | struct f2fs_summary sum; | |
05ca3632 | 3252 | |
351df4b2 | 3253 | set_summary(&sum, nid, 0, 0); |
05ca3632 | 3254 | do_write_page(&sum, fio); |
b0af6d49 CY |
3255 | |
3256 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
3257 | } |
3258 | ||
4d57b86d CY |
3259 | void f2fs_outplace_write_data(struct dnode_of_data *dn, |
3260 | struct f2fs_io_info *fio) | |
351df4b2 | 3261 | { |
05ca3632 | 3262 | struct f2fs_sb_info *sbi = fio->sbi; |
351df4b2 | 3263 | struct f2fs_summary sum; |
351df4b2 | 3264 | |
9850cf4a | 3265 | f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); |
7735730d | 3266 | set_summary(&sum, dn->nid, dn->ofs_in_node, fio->version); |
05ca3632 | 3267 | do_write_page(&sum, fio); |
f28b3434 | 3268 | f2fs_update_data_blkaddr(dn, fio->new_blkaddr); |
b0af6d49 CY |
3269 | |
3270 | f2fs_update_iostat(sbi, fio->io_type, F2FS_BLKSIZE); | |
351df4b2 JK |
3271 | } |
3272 | ||
4d57b86d | 3273 | int f2fs_inplace_write_data(struct f2fs_io_info *fio) |
351df4b2 | 3274 | { |
b0af6d49 | 3275 | int err; |
d21b0f23 | 3276 | struct f2fs_sb_info *sbi = fio->sbi; |
05573d6c | 3277 | unsigned int segno; |
b0af6d49 | 3278 | |
7a9d7548 | 3279 | fio->new_blkaddr = fio->old_blkaddr; |
0cdd3195 HL |
3280 | /* i/o temperature is needed for passing down write hints */ |
3281 | __get_segment_type(fio); | |
d21b0f23 | 3282 | |
05573d6c CY |
3283 | segno = GET_SEGNO(sbi, fio->new_blkaddr); |
3284 | ||
3285 | if (!IS_DATASEG(get_seg_entry(sbi, segno)->type)) { | |
3286 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
2d821c12 CY |
3287 | f2fs_warn(sbi, "%s: incorrect segment(%u) type, run fsck to fix.", |
3288 | __func__, segno); | |
10f966bb | 3289 | return -EFSCORRUPTED; |
05573d6c | 3290 | } |
d21b0f23 | 3291 | |
05ca3632 | 3292 | stat_inc_inplace_blocks(fio->sbi); |
b0af6d49 | 3293 | |
0e7f4197 | 3294 | if (fio->bio && !(SM_I(sbi)->ipu_policy & (1 << F2FS_IPU_NOCACHE))) |
8648de2c CY |
3295 | err = f2fs_merge_page_bio(fio); |
3296 | else | |
3297 | err = f2fs_submit_page_bio(fio); | |
e46f6bd8 | 3298 | if (!err) { |
39d787be | 3299 | update_device_state(fio); |
e46f6bd8 CY |
3300 | f2fs_update_iostat(fio->sbi, fio->io_type, F2FS_BLKSIZE); |
3301 | } | |
b0af6d49 CY |
3302 | |
3303 | return err; | |
351df4b2 JK |
3304 | } |
3305 | ||
2b60311d CY |
3306 | static inline int __f2fs_get_curseg(struct f2fs_sb_info *sbi, |
3307 | unsigned int segno) | |
3308 | { | |
3309 | int i; | |
3310 | ||
3311 | for (i = CURSEG_HOT_DATA; i < NO_CHECK_TYPE; i++) { | |
3312 | if (CURSEG_I(sbi, i)->segno == segno) | |
3313 | break; | |
3314 | } | |
3315 | return i; | |
3316 | } | |
3317 | ||
4d57b86d | 3318 | void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, |
19f106bc | 3319 | block_t old_blkaddr, block_t new_blkaddr, |
28bc106b | 3320 | bool recover_curseg, bool recover_newaddr) |
351df4b2 JK |
3321 | { |
3322 | struct sit_info *sit_i = SIT_I(sbi); | |
3323 | struct curseg_info *curseg; | |
3324 | unsigned int segno, old_cursegno; | |
3325 | struct seg_entry *se; | |
3326 | int type; | |
19f106bc | 3327 | unsigned short old_blkoff; |
351df4b2 JK |
3328 | |
3329 | segno = GET_SEGNO(sbi, new_blkaddr); | |
3330 | se = get_seg_entry(sbi, segno); | |
3331 | type = se->type; | |
3332 | ||
2b60311d CY |
3333 | down_write(&SM_I(sbi)->curseg_lock); |
3334 | ||
19f106bc CY |
3335 | if (!recover_curseg) { |
3336 | /* for recovery flow */ | |
3337 | if (se->valid_blocks == 0 && !IS_CURSEG(sbi, segno)) { | |
3338 | if (old_blkaddr == NULL_ADDR) | |
3339 | type = CURSEG_COLD_DATA; | |
3340 | else | |
3341 | type = CURSEG_WARM_DATA; | |
3342 | } | |
3343 | } else { | |
2b60311d CY |
3344 | if (IS_CURSEG(sbi, segno)) { |
3345 | /* se->type is volatile as SSR allocation */ | |
3346 | type = __f2fs_get_curseg(sbi, segno); | |
3347 | f2fs_bug_on(sbi, type == NO_CHECK_TYPE); | |
3348 | } else { | |
351df4b2 | 3349 | type = CURSEG_WARM_DATA; |
2b60311d | 3350 | } |
351df4b2 | 3351 | } |
19f106bc | 3352 | |
2c190504 | 3353 | f2fs_bug_on(sbi, !IS_DATASEG(type)); |
351df4b2 JK |
3354 | curseg = CURSEG_I(sbi, type); |
3355 | ||
3356 | mutex_lock(&curseg->curseg_mutex); | |
3d26fa6b | 3357 | down_write(&sit_i->sentry_lock); |
351df4b2 JK |
3358 | |
3359 | old_cursegno = curseg->segno; | |
19f106bc | 3360 | old_blkoff = curseg->next_blkoff; |
351df4b2 JK |
3361 | |
3362 | /* change the current segment */ | |
3363 | if (segno != curseg->segno) { | |
3364 | curseg->next_segno = segno; | |
025d63a4 | 3365 | change_curseg(sbi, type); |
351df4b2 JK |
3366 | } |
3367 | ||
491c0854 | 3368 | curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); |
e79efe3b | 3369 | __add_sum_entry(sbi, type, sum); |
351df4b2 | 3370 | |
28bc106b | 3371 | if (!recover_curseg || recover_newaddr) |
6e2c64ad | 3372 | update_sit_entry(sbi, new_blkaddr, 1); |
6aa58d8a CY |
3373 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
3374 | invalidate_mapping_pages(META_MAPPING(sbi), | |
3375 | old_blkaddr, old_blkaddr); | |
6e2c64ad | 3376 | update_sit_entry(sbi, old_blkaddr, -1); |
6aa58d8a | 3377 | } |
6e2c64ad JK |
3378 | |
3379 | locate_dirty_segment(sbi, GET_SEGNO(sbi, old_blkaddr)); | |
3380 | locate_dirty_segment(sbi, GET_SEGNO(sbi, new_blkaddr)); | |
3381 | ||
351df4b2 | 3382 | locate_dirty_segment(sbi, old_cursegno); |
351df4b2 | 3383 | |
19f106bc CY |
3384 | if (recover_curseg) { |
3385 | if (old_cursegno != curseg->segno) { | |
3386 | curseg->next_segno = old_cursegno; | |
025d63a4 | 3387 | change_curseg(sbi, type); |
19f106bc CY |
3388 | } |
3389 | curseg->next_blkoff = old_blkoff; | |
3390 | } | |
3391 | ||
3d26fa6b | 3392 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3393 | mutex_unlock(&curseg->curseg_mutex); |
2b60311d | 3394 | up_write(&SM_I(sbi)->curseg_lock); |
351df4b2 JK |
3395 | } |
3396 | ||
528e3459 CY |
3397 | void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn, |
3398 | block_t old_addr, block_t new_addr, | |
28bc106b CY |
3399 | unsigned char version, bool recover_curseg, |
3400 | bool recover_newaddr) | |
528e3459 CY |
3401 | { |
3402 | struct f2fs_summary sum; | |
3403 | ||
3404 | set_summary(&sum, dn->nid, dn->ofs_in_node, version); | |
3405 | ||
4d57b86d | 3406 | f2fs_do_replace_block(sbi, &sum, old_addr, new_addr, |
28bc106b | 3407 | recover_curseg, recover_newaddr); |
528e3459 | 3408 | |
f28b3434 | 3409 | f2fs_update_data_blkaddr(dn, new_addr); |
528e3459 CY |
3410 | } |
3411 | ||
93dfe2ac | 3412 | void f2fs_wait_on_page_writeback(struct page *page, |
bae0ee7a | 3413 | enum page_type type, bool ordered, bool locked) |
93dfe2ac | 3414 | { |
93dfe2ac | 3415 | if (PageWriteback(page)) { |
4081363f JK |
3416 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); |
3417 | ||
0b20fcec | 3418 | /* submit cached LFS IO */ |
bab475c5 | 3419 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, type); |
0b20fcec CY |
3420 | /* sbumit cached IPU IO */ |
3421 | f2fs_submit_merged_ipu_write(sbi, NULL, page); | |
bae0ee7a | 3422 | if (ordered) { |
fec1d657 | 3423 | wait_on_page_writeback(page); |
bae0ee7a CY |
3424 | f2fs_bug_on(sbi, locked && PageWriteback(page)); |
3425 | } else { | |
fec1d657 | 3426 | wait_for_stable_page(page); |
bae0ee7a | 3427 | } |
93dfe2ac JK |
3428 | } |
3429 | } | |
3430 | ||
0ded69f6 | 3431 | void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr) |
08b39fbd | 3432 | { |
0ded69f6 | 3433 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
08b39fbd CY |
3434 | struct page *cpage; |
3435 | ||
0ded69f6 JK |
3436 | if (!f2fs_post_read_required(inode)) |
3437 | return; | |
3438 | ||
93770ab7 | 3439 | if (!__is_valid_data_blkaddr(blkaddr)) |
08b39fbd CY |
3440 | return; |
3441 | ||
08b39fbd CY |
3442 | cpage = find_lock_page(META_MAPPING(sbi), blkaddr); |
3443 | if (cpage) { | |
bae0ee7a | 3444 | f2fs_wait_on_page_writeback(cpage, DATA, true, true); |
08b39fbd CY |
3445 | f2fs_put_page(cpage, 1); |
3446 | } | |
3447 | } | |
3448 | ||
1e78e8bd ST |
3449 | void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr, |
3450 | block_t len) | |
3451 | { | |
3452 | block_t i; | |
3453 | ||
3454 | for (i = 0; i < len; i++) | |
3455 | f2fs_wait_on_block_writeback(inode, blkaddr + i); | |
3456 | } | |
3457 | ||
7735730d | 3458 | static int read_compacted_summaries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
3459 | { |
3460 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3461 | struct curseg_info *seg_i; | |
3462 | unsigned char *kaddr; | |
3463 | struct page *page; | |
3464 | block_t start; | |
3465 | int i, j, offset; | |
3466 | ||
3467 | start = start_sum_block(sbi); | |
3468 | ||
4d57b86d | 3469 | page = f2fs_get_meta_page(sbi, start++); |
7735730d CY |
3470 | if (IS_ERR(page)) |
3471 | return PTR_ERR(page); | |
351df4b2 JK |
3472 | kaddr = (unsigned char *)page_address(page); |
3473 | ||
3474 | /* Step 1: restore nat cache */ | |
3475 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3476 | memcpy(seg_i->journal, kaddr, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3477 | |
3478 | /* Step 2: restore sit cache */ | |
3479 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3480 | memcpy(seg_i->journal, kaddr + SUM_JOURNAL_SIZE, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3481 | offset = 2 * SUM_JOURNAL_SIZE; |
3482 | ||
3483 | /* Step 3: restore summary entries */ | |
3484 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3485 | unsigned short blk_off; | |
3486 | unsigned int segno; | |
3487 | ||
3488 | seg_i = CURSEG_I(sbi, i); | |
3489 | segno = le32_to_cpu(ckpt->cur_data_segno[i]); | |
3490 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[i]); | |
3491 | seg_i->next_segno = segno; | |
3492 | reset_curseg(sbi, i, 0); | |
3493 | seg_i->alloc_type = ckpt->alloc_type[i]; | |
3494 | seg_i->next_blkoff = blk_off; | |
3495 | ||
3496 | if (seg_i->alloc_type == SSR) | |
3497 | blk_off = sbi->blocks_per_seg; | |
3498 | ||
3499 | for (j = 0; j < blk_off; j++) { | |
3500 | struct f2fs_summary *s; | |
3501 | s = (struct f2fs_summary *)(kaddr + offset); | |
3502 | seg_i->sum_blk->entries[j] = *s; | |
3503 | offset += SUMMARY_SIZE; | |
09cbfeaf | 3504 | if (offset + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3505 | SUM_FOOTER_SIZE) |
3506 | continue; | |
3507 | ||
3508 | f2fs_put_page(page, 1); | |
3509 | page = NULL; | |
3510 | ||
4d57b86d | 3511 | page = f2fs_get_meta_page(sbi, start++); |
7735730d CY |
3512 | if (IS_ERR(page)) |
3513 | return PTR_ERR(page); | |
351df4b2 JK |
3514 | kaddr = (unsigned char *)page_address(page); |
3515 | offset = 0; | |
3516 | } | |
3517 | } | |
3518 | f2fs_put_page(page, 1); | |
7735730d | 3519 | return 0; |
351df4b2 JK |
3520 | } |
3521 | ||
3522 | static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) | |
3523 | { | |
3524 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
3525 | struct f2fs_summary_block *sum; | |
3526 | struct curseg_info *curseg; | |
3527 | struct page *new; | |
3528 | unsigned short blk_off; | |
3529 | unsigned int segno = 0; | |
3530 | block_t blk_addr = 0; | |
7735730d | 3531 | int err = 0; |
351df4b2 JK |
3532 | |
3533 | /* get segment number and block addr */ | |
3534 | if (IS_DATASEG(type)) { | |
3535 | segno = le32_to_cpu(ckpt->cur_data_segno[type]); | |
3536 | blk_off = le16_to_cpu(ckpt->cur_data_blkoff[type - | |
3537 | CURSEG_HOT_DATA]); | |
119ee914 | 3538 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3539 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_TYPE, type); |
3540 | else | |
3541 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_DATA_TYPE, type); | |
3542 | } else { | |
3543 | segno = le32_to_cpu(ckpt->cur_node_segno[type - | |
3544 | CURSEG_HOT_NODE]); | |
3545 | blk_off = le16_to_cpu(ckpt->cur_node_blkoff[type - | |
3546 | CURSEG_HOT_NODE]); | |
119ee914 | 3547 | if (__exist_node_summaries(sbi)) |
351df4b2 JK |
3548 | blk_addr = sum_blk_addr(sbi, NR_CURSEG_NODE_TYPE, |
3549 | type - CURSEG_HOT_NODE); | |
3550 | else | |
3551 | blk_addr = GET_SUM_BLOCK(sbi, segno); | |
3552 | } | |
3553 | ||
4d57b86d | 3554 | new = f2fs_get_meta_page(sbi, blk_addr); |
7735730d CY |
3555 | if (IS_ERR(new)) |
3556 | return PTR_ERR(new); | |
351df4b2 JK |
3557 | sum = (struct f2fs_summary_block *)page_address(new); |
3558 | ||
3559 | if (IS_NODESEG(type)) { | |
119ee914 | 3560 | if (__exist_node_summaries(sbi)) { |
351df4b2 JK |
3561 | struct f2fs_summary *ns = &sum->entries[0]; |
3562 | int i; | |
3563 | for (i = 0; i < sbi->blocks_per_seg; i++, ns++) { | |
3564 | ns->version = 0; | |
3565 | ns->ofs_in_node = 0; | |
3566 | } | |
3567 | } else { | |
7735730d CY |
3568 | err = f2fs_restore_node_summary(sbi, segno, sum); |
3569 | if (err) | |
3570 | goto out; | |
351df4b2 JK |
3571 | } |
3572 | } | |
3573 | ||
3574 | /* set uncompleted segment to curseg */ | |
3575 | curseg = CURSEG_I(sbi, type); | |
3576 | mutex_lock(&curseg->curseg_mutex); | |
b7ad7512 CY |
3577 | |
3578 | /* update journal info */ | |
3579 | down_write(&curseg->journal_rwsem); | |
3580 | memcpy(curseg->journal, &sum->journal, SUM_JOURNAL_SIZE); | |
3581 | up_write(&curseg->journal_rwsem); | |
3582 | ||
3583 | memcpy(curseg->sum_blk->entries, sum->entries, SUM_ENTRY_SIZE); | |
3584 | memcpy(&curseg->sum_blk->footer, &sum->footer, SUM_FOOTER_SIZE); | |
351df4b2 JK |
3585 | curseg->next_segno = segno; |
3586 | reset_curseg(sbi, type, 0); | |
3587 | curseg->alloc_type = ckpt->alloc_type[type]; | |
3588 | curseg->next_blkoff = blk_off; | |
3589 | mutex_unlock(&curseg->curseg_mutex); | |
7735730d | 3590 | out: |
351df4b2 | 3591 | f2fs_put_page(new, 1); |
7735730d | 3592 | return err; |
351df4b2 JK |
3593 | } |
3594 | ||
3595 | static int restore_curseg_summaries(struct f2fs_sb_info *sbi) | |
3596 | { | |
21d3f8e1 JQ |
3597 | struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal; |
3598 | struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal; | |
351df4b2 | 3599 | int type = CURSEG_HOT_DATA; |
e4fc5fbf | 3600 | int err; |
351df4b2 | 3601 | |
aaec2b1d | 3602 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) { |
4d57b86d | 3603 | int npages = f2fs_npages_for_summary_flush(sbi, true); |
3fa06d7b CY |
3604 | |
3605 | if (npages >= 2) | |
4d57b86d | 3606 | f2fs_ra_meta_pages(sbi, start_sum_block(sbi), npages, |
26879fb1 | 3607 | META_CP, true); |
3fa06d7b | 3608 | |
351df4b2 | 3609 | /* restore for compacted data summary */ |
7735730d CY |
3610 | err = read_compacted_summaries(sbi); |
3611 | if (err) | |
3612 | return err; | |
351df4b2 JK |
3613 | type = CURSEG_HOT_NODE; |
3614 | } | |
3615 | ||
119ee914 | 3616 | if (__exist_node_summaries(sbi)) |
4d57b86d | 3617 | f2fs_ra_meta_pages(sbi, sum_blk_addr(sbi, NR_CURSEG_TYPE, type), |
26879fb1 | 3618 | NR_CURSEG_TYPE - type, META_CP, true); |
3fa06d7b | 3619 | |
e4fc5fbf CY |
3620 | for (; type <= CURSEG_COLD_NODE; type++) { |
3621 | err = read_normal_summaries(sbi, type); | |
3622 | if (err) | |
3623 | return err; | |
3624 | } | |
3625 | ||
21d3f8e1 JQ |
3626 | /* sanity check for summary blocks */ |
3627 | if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES || | |
9227d522 | 3628 | sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) { |
dcbb4c10 JP |
3629 | f2fs_err(sbi, "invalid journal entries nats %u sits %u\n", |
3630 | nats_in_cursum(nat_j), sits_in_cursum(sit_j)); | |
21d3f8e1 | 3631 | return -EINVAL; |
9227d522 | 3632 | } |
21d3f8e1 | 3633 | |
351df4b2 JK |
3634 | return 0; |
3635 | } | |
3636 | ||
3637 | static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr) | |
3638 | { | |
3639 | struct page *page; | |
3640 | unsigned char *kaddr; | |
3641 | struct f2fs_summary *summary; | |
3642 | struct curseg_info *seg_i; | |
3643 | int written_size = 0; | |
3644 | int i, j; | |
3645 | ||
4d57b86d | 3646 | page = f2fs_grab_meta_page(sbi, blkaddr++); |
351df4b2 | 3647 | kaddr = (unsigned char *)page_address(page); |
81114baa | 3648 | memset(kaddr, 0, PAGE_SIZE); |
351df4b2 JK |
3649 | |
3650 | /* Step 1: write nat cache */ | |
3651 | seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA); | |
b7ad7512 | 3652 | memcpy(kaddr, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3653 | written_size += SUM_JOURNAL_SIZE; |
3654 | ||
3655 | /* Step 2: write sit cache */ | |
3656 | seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3657 | memcpy(kaddr + written_size, seg_i->journal, SUM_JOURNAL_SIZE); |
351df4b2 JK |
3658 | written_size += SUM_JOURNAL_SIZE; |
3659 | ||
351df4b2 JK |
3660 | /* Step 3: write summary entries */ |
3661 | for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) { | |
3662 | unsigned short blkoff; | |
3663 | seg_i = CURSEG_I(sbi, i); | |
3664 | if (sbi->ckpt->alloc_type[i] == SSR) | |
3665 | blkoff = sbi->blocks_per_seg; | |
3666 | else | |
3667 | blkoff = curseg_blkoff(sbi, i); | |
3668 | ||
3669 | for (j = 0; j < blkoff; j++) { | |
3670 | if (!page) { | |
4d57b86d | 3671 | page = f2fs_grab_meta_page(sbi, blkaddr++); |
351df4b2 | 3672 | kaddr = (unsigned char *)page_address(page); |
81114baa | 3673 | memset(kaddr, 0, PAGE_SIZE); |
351df4b2 JK |
3674 | written_size = 0; |
3675 | } | |
3676 | summary = (struct f2fs_summary *)(kaddr + written_size); | |
3677 | *summary = seg_i->sum_blk->entries[j]; | |
3678 | written_size += SUMMARY_SIZE; | |
351df4b2 | 3679 | |
09cbfeaf | 3680 | if (written_size + SUMMARY_SIZE <= PAGE_SIZE - |
351df4b2 JK |
3681 | SUM_FOOTER_SIZE) |
3682 | continue; | |
3683 | ||
e8d61a74 | 3684 | set_page_dirty(page); |
351df4b2 JK |
3685 | f2fs_put_page(page, 1); |
3686 | page = NULL; | |
3687 | } | |
3688 | } | |
e8d61a74 CY |
3689 | if (page) { |
3690 | set_page_dirty(page); | |
351df4b2 | 3691 | f2fs_put_page(page, 1); |
e8d61a74 | 3692 | } |
351df4b2 JK |
3693 | } |
3694 | ||
3695 | static void write_normal_summaries(struct f2fs_sb_info *sbi, | |
3696 | block_t blkaddr, int type) | |
3697 | { | |
3698 | int i, end; | |
3699 | if (IS_DATASEG(type)) | |
3700 | end = type + NR_CURSEG_DATA_TYPE; | |
3701 | else | |
3702 | end = type + NR_CURSEG_NODE_TYPE; | |
3703 | ||
b7ad7512 CY |
3704 | for (i = type; i < end; i++) |
3705 | write_current_sum_page(sbi, i, blkaddr + (i - type)); | |
351df4b2 JK |
3706 | } |
3707 | ||
4d57b86d | 3708 | void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
351df4b2 | 3709 | { |
aaec2b1d | 3710 | if (is_set_ckpt_flags(sbi, CP_COMPACT_SUM_FLAG)) |
351df4b2 JK |
3711 | write_compacted_summaries(sbi, start_blk); |
3712 | else | |
3713 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_DATA); | |
3714 | } | |
3715 | ||
4d57b86d | 3716 | void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk) |
351df4b2 | 3717 | { |
119ee914 | 3718 | write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE); |
351df4b2 JK |
3719 | } |
3720 | ||
4d57b86d | 3721 | int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type, |
351df4b2 JK |
3722 | unsigned int val, int alloc) |
3723 | { | |
3724 | int i; | |
3725 | ||
3726 | if (type == NAT_JOURNAL) { | |
dfc08a12 CY |
3727 | for (i = 0; i < nats_in_cursum(journal); i++) { |
3728 | if (le32_to_cpu(nid_in_journal(journal, i)) == val) | |
351df4b2 JK |
3729 | return i; |
3730 | } | |
dfc08a12 CY |
3731 | if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL)) |
3732 | return update_nats_in_cursum(journal, 1); | |
351df4b2 | 3733 | } else if (type == SIT_JOURNAL) { |
dfc08a12 CY |
3734 | for (i = 0; i < sits_in_cursum(journal); i++) |
3735 | if (le32_to_cpu(segno_in_journal(journal, i)) == val) | |
351df4b2 | 3736 | return i; |
dfc08a12 CY |
3737 | if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL)) |
3738 | return update_sits_in_cursum(journal, 1); | |
351df4b2 JK |
3739 | } |
3740 | return -1; | |
3741 | } | |
3742 | ||
3743 | static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, | |
3744 | unsigned int segno) | |
3745 | { | |
7735730d | 3746 | return f2fs_get_meta_page_nofail(sbi, current_sit_addr(sbi, segno)); |
351df4b2 JK |
3747 | } |
3748 | ||
3749 | static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, | |
3750 | unsigned int start) | |
3751 | { | |
3752 | struct sit_info *sit_i = SIT_I(sbi); | |
068c3cd8 | 3753 | struct page *page; |
351df4b2 | 3754 | pgoff_t src_off, dst_off; |
351df4b2 JK |
3755 | |
3756 | src_off = current_sit_addr(sbi, start); | |
3757 | dst_off = next_sit_addr(sbi, src_off); | |
3758 | ||
4d57b86d | 3759 | page = f2fs_grab_meta_page(sbi, dst_off); |
068c3cd8 | 3760 | seg_info_to_sit_page(sbi, page, start); |
351df4b2 | 3761 | |
068c3cd8 | 3762 | set_page_dirty(page); |
351df4b2 JK |
3763 | set_to_next_sit(sit_i, start); |
3764 | ||
068c3cd8 | 3765 | return page; |
351df4b2 JK |
3766 | } |
3767 | ||
184a5cd2 CY |
3768 | static struct sit_entry_set *grab_sit_entry_set(void) |
3769 | { | |
3770 | struct sit_entry_set *ses = | |
80c54505 | 3771 | f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_NOFS); |
184a5cd2 CY |
3772 | |
3773 | ses->entry_cnt = 0; | |
3774 | INIT_LIST_HEAD(&ses->set_list); | |
3775 | return ses; | |
3776 | } | |
3777 | ||
3778 | static void release_sit_entry_set(struct sit_entry_set *ses) | |
3779 | { | |
3780 | list_del(&ses->set_list); | |
3781 | kmem_cache_free(sit_entry_set_slab, ses); | |
3782 | } | |
3783 | ||
3784 | static void adjust_sit_entry_set(struct sit_entry_set *ses, | |
3785 | struct list_head *head) | |
3786 | { | |
3787 | struct sit_entry_set *next = ses; | |
3788 | ||
3789 | if (list_is_last(&ses->set_list, head)) | |
3790 | return; | |
3791 | ||
3792 | list_for_each_entry_continue(next, head, set_list) | |
3793 | if (ses->entry_cnt <= next->entry_cnt) | |
3794 | break; | |
3795 | ||
3796 | list_move_tail(&ses->set_list, &next->set_list); | |
3797 | } | |
3798 | ||
3799 | static void add_sit_entry(unsigned int segno, struct list_head *head) | |
3800 | { | |
3801 | struct sit_entry_set *ses; | |
3802 | unsigned int start_segno = START_SEGNO(segno); | |
3803 | ||
3804 | list_for_each_entry(ses, head, set_list) { | |
3805 | if (ses->start_segno == start_segno) { | |
3806 | ses->entry_cnt++; | |
3807 | adjust_sit_entry_set(ses, head); | |
3808 | return; | |
3809 | } | |
3810 | } | |
3811 | ||
3812 | ses = grab_sit_entry_set(); | |
3813 | ||
3814 | ses->start_segno = start_segno; | |
3815 | ses->entry_cnt++; | |
3816 | list_add(&ses->set_list, head); | |
3817 | } | |
3818 | ||
3819 | static void add_sits_in_set(struct f2fs_sb_info *sbi) | |
3820 | { | |
3821 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
3822 | struct list_head *set_list = &sm_info->sit_entry_set; | |
3823 | unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; | |
184a5cd2 CY |
3824 | unsigned int segno; |
3825 | ||
7cd8558b | 3826 | for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) |
184a5cd2 CY |
3827 | add_sit_entry(segno, set_list); |
3828 | } | |
3829 | ||
3830 | static void remove_sits_in_journal(struct f2fs_sb_info *sbi) | |
351df4b2 JK |
3831 | { |
3832 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3833 | struct f2fs_journal *journal = curseg->journal; |
351df4b2 JK |
3834 | int i; |
3835 | ||
b7ad7512 | 3836 | down_write(&curseg->journal_rwsem); |
dfc08a12 | 3837 | for (i = 0; i < sits_in_cursum(journal); i++) { |
184a5cd2 CY |
3838 | unsigned int segno; |
3839 | bool dirtied; | |
3840 | ||
dfc08a12 | 3841 | segno = le32_to_cpu(segno_in_journal(journal, i)); |
184a5cd2 CY |
3842 | dirtied = __mark_sit_entry_dirty(sbi, segno); |
3843 | ||
3844 | if (!dirtied) | |
3845 | add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); | |
351df4b2 | 3846 | } |
dfc08a12 | 3847 | update_sits_in_cursum(journal, -i); |
b7ad7512 | 3848 | up_write(&curseg->journal_rwsem); |
351df4b2 JK |
3849 | } |
3850 | ||
0a8165d7 | 3851 | /* |
351df4b2 JK |
3852 | * CP calls this function, which flushes SIT entries including sit_journal, |
3853 | * and moves prefree segs to free segs. | |
3854 | */ | |
4d57b86d | 3855 | void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) |
351df4b2 JK |
3856 | { |
3857 | struct sit_info *sit_i = SIT_I(sbi); | |
3858 | unsigned long *bitmap = sit_i->dirty_sentries_bitmap; | |
3859 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 3860 | struct f2fs_journal *journal = curseg->journal; |
184a5cd2 CY |
3861 | struct sit_entry_set *ses, *tmp; |
3862 | struct list_head *head = &SM_I(sbi)->sit_entry_set; | |
04f0b2ea | 3863 | bool to_journal = !is_sbi_flag_set(sbi, SBI_IS_RESIZEFS); |
4b2fecc8 | 3864 | struct seg_entry *se; |
351df4b2 | 3865 | |
3d26fa6b | 3866 | down_write(&sit_i->sentry_lock); |
351df4b2 | 3867 | |
2b11a74b WL |
3868 | if (!sit_i->dirty_sentries) |
3869 | goto out; | |
3870 | ||
351df4b2 | 3871 | /* |
184a5cd2 CY |
3872 | * add and account sit entries of dirty bitmap in sit entry |
3873 | * set temporarily | |
351df4b2 | 3874 | */ |
184a5cd2 | 3875 | add_sits_in_set(sbi); |
351df4b2 | 3876 | |
184a5cd2 CY |
3877 | /* |
3878 | * if there are no enough space in journal to store dirty sit | |
3879 | * entries, remove all entries from journal and add and account | |
3880 | * them in sit entry set. | |
3881 | */ | |
04f0b2ea QS |
3882 | if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL) || |
3883 | !to_journal) | |
184a5cd2 | 3884 | remove_sits_in_journal(sbi); |
b2955550 | 3885 | |
184a5cd2 CY |
3886 | /* |
3887 | * there are two steps to flush sit entries: | |
3888 | * #1, flush sit entries to journal in current cold data summary block. | |
3889 | * #2, flush sit entries to sit page. | |
3890 | */ | |
3891 | list_for_each_entry_safe(ses, tmp, head, set_list) { | |
4a257ed6 | 3892 | struct page *page = NULL; |
184a5cd2 CY |
3893 | struct f2fs_sit_block *raw_sit = NULL; |
3894 | unsigned int start_segno = ses->start_segno; | |
3895 | unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, | |
7cd8558b | 3896 | (unsigned long)MAIN_SEGS(sbi)); |
184a5cd2 CY |
3897 | unsigned int segno = start_segno; |
3898 | ||
3899 | if (to_journal && | |
dfc08a12 | 3900 | !__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL)) |
184a5cd2 CY |
3901 | to_journal = false; |
3902 | ||
b7ad7512 CY |
3903 | if (to_journal) { |
3904 | down_write(&curseg->journal_rwsem); | |
3905 | } else { | |
184a5cd2 CY |
3906 | page = get_next_sit_page(sbi, start_segno); |
3907 | raw_sit = page_address(page); | |
351df4b2 | 3908 | } |
351df4b2 | 3909 | |
184a5cd2 CY |
3910 | /* flush dirty sit entries in region of current sit set */ |
3911 | for_each_set_bit_from(segno, bitmap, end) { | |
3912 | int offset, sit_offset; | |
4b2fecc8 JK |
3913 | |
3914 | se = get_seg_entry(sbi, segno); | |
56b07e7e ZZ |
3915 | #ifdef CONFIG_F2FS_CHECK_FS |
3916 | if (memcmp(se->cur_valid_map, se->cur_valid_map_mir, | |
3917 | SIT_VBLOCK_MAP_SIZE)) | |
3918 | f2fs_bug_on(sbi, 1); | |
3919 | #endif | |
184a5cd2 CY |
3920 | |
3921 | /* add discard candidates */ | |
c473f1a9 | 3922 | if (!(cpc->reason & CP_DISCARD)) { |
4b2fecc8 | 3923 | cpc->trim_start = segno; |
25290fa5 | 3924 | add_discard_addrs(sbi, cpc, false); |
4b2fecc8 | 3925 | } |
184a5cd2 CY |
3926 | |
3927 | if (to_journal) { | |
4d57b86d | 3928 | offset = f2fs_lookup_journal_in_cursum(journal, |
184a5cd2 CY |
3929 | SIT_JOURNAL, segno, 1); |
3930 | f2fs_bug_on(sbi, offset < 0); | |
dfc08a12 | 3931 | segno_in_journal(journal, offset) = |
184a5cd2 CY |
3932 | cpu_to_le32(segno); |
3933 | seg_info_to_raw_sit(se, | |
dfc08a12 | 3934 | &sit_in_journal(journal, offset)); |
56b07e7e ZZ |
3935 | check_block_count(sbi, segno, |
3936 | &sit_in_journal(journal, offset)); | |
184a5cd2 CY |
3937 | } else { |
3938 | sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); | |
3939 | seg_info_to_raw_sit(se, | |
3940 | &raw_sit->entries[sit_offset]); | |
56b07e7e ZZ |
3941 | check_block_count(sbi, segno, |
3942 | &raw_sit->entries[sit_offset]); | |
184a5cd2 | 3943 | } |
351df4b2 | 3944 | |
184a5cd2 CY |
3945 | __clear_bit(segno, bitmap); |
3946 | sit_i->dirty_sentries--; | |
3947 | ses->entry_cnt--; | |
351df4b2 JK |
3948 | } |
3949 | ||
b7ad7512 CY |
3950 | if (to_journal) |
3951 | up_write(&curseg->journal_rwsem); | |
3952 | else | |
184a5cd2 CY |
3953 | f2fs_put_page(page, 1); |
3954 | ||
3955 | f2fs_bug_on(sbi, ses->entry_cnt); | |
3956 | release_sit_entry_set(ses); | |
351df4b2 | 3957 | } |
184a5cd2 CY |
3958 | |
3959 | f2fs_bug_on(sbi, !list_empty(head)); | |
3960 | f2fs_bug_on(sbi, sit_i->dirty_sentries); | |
184a5cd2 | 3961 | out: |
c473f1a9 | 3962 | if (cpc->reason & CP_DISCARD) { |
650d3c4e YH |
3963 | __u64 trim_start = cpc->trim_start; |
3964 | ||
4b2fecc8 | 3965 | for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) |
25290fa5 | 3966 | add_discard_addrs(sbi, cpc, false); |
650d3c4e YH |
3967 | |
3968 | cpc->trim_start = trim_start; | |
4b2fecc8 | 3969 | } |
3d26fa6b | 3970 | up_write(&sit_i->sentry_lock); |
351df4b2 | 3971 | |
351df4b2 JK |
3972 | set_prefree_as_free_segments(sbi); |
3973 | } | |
3974 | ||
3975 | static int build_sit_info(struct f2fs_sb_info *sbi) | |
3976 | { | |
3977 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
351df4b2 JK |
3978 | struct sit_info *sit_i; |
3979 | unsigned int sit_segs, start; | |
2fde3dd1 | 3980 | char *src_bitmap, *bitmap; |
bbf9f7d9 | 3981 | unsigned int bitmap_size, main_bitmap_size, sit_bitmap_size; |
351df4b2 JK |
3982 | |
3983 | /* allocate memory for SIT information */ | |
acbf054d | 3984 | sit_i = f2fs_kzalloc(sbi, sizeof(struct sit_info), GFP_KERNEL); |
351df4b2 JK |
3985 | if (!sit_i) |
3986 | return -ENOMEM; | |
3987 | ||
3988 | SM_I(sbi)->sit_info = sit_i; | |
3989 | ||
9d2a789c KC |
3990 | sit_i->sentries = |
3991 | f2fs_kvzalloc(sbi, array_size(sizeof(struct seg_entry), | |
3992 | MAIN_SEGS(sbi)), | |
3993 | GFP_KERNEL); | |
351df4b2 JK |
3994 | if (!sit_i->sentries) |
3995 | return -ENOMEM; | |
3996 | ||
bbf9f7d9 ST |
3997 | main_bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
3998 | sit_i->dirty_sentries_bitmap = f2fs_kvzalloc(sbi, main_bitmap_size, | |
628b3d14 | 3999 | GFP_KERNEL); |
351df4b2 JK |
4000 | if (!sit_i->dirty_sentries_bitmap) |
4001 | return -ENOMEM; | |
4002 | ||
2fde3dd1 CY |
4003 | #ifdef CONFIG_F2FS_CHECK_FS |
4004 | bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 4; | |
4005 | #else | |
4006 | bitmap_size = MAIN_SEGS(sbi) * SIT_VBLOCK_MAP_SIZE * 3; | |
4007 | #endif | |
4008 | sit_i->bitmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL); | |
4009 | if (!sit_i->bitmap) | |
4010 | return -ENOMEM; | |
4011 | ||
4012 | bitmap = sit_i->bitmap; | |
4013 | ||
7cd8558b | 4014 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
2fde3dd1 CY |
4015 | sit_i->sentries[start].cur_valid_map = bitmap; |
4016 | bitmap += SIT_VBLOCK_MAP_SIZE; | |
4017 | ||
4018 | sit_i->sentries[start].ckpt_valid_map = bitmap; | |
4019 | bitmap += SIT_VBLOCK_MAP_SIZE; | |
3e025740 | 4020 | |
355e7891 | 4021 | #ifdef CONFIG_F2FS_CHECK_FS |
2fde3dd1 CY |
4022 | sit_i->sentries[start].cur_valid_map_mir = bitmap; |
4023 | bitmap += SIT_VBLOCK_MAP_SIZE; | |
355e7891 CY |
4024 | #endif |
4025 | ||
2fde3dd1 CY |
4026 | sit_i->sentries[start].discard_map = bitmap; |
4027 | bitmap += SIT_VBLOCK_MAP_SIZE; | |
351df4b2 JK |
4028 | } |
4029 | ||
acbf054d | 4030 | sit_i->tmp_map = f2fs_kzalloc(sbi, SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); |
60a3b782 JK |
4031 | if (!sit_i->tmp_map) |
4032 | return -ENOMEM; | |
4033 | ||
2c70c5e3 | 4034 | if (__is_large_section(sbi)) { |
9d2a789c KC |
4035 | sit_i->sec_entries = |
4036 | f2fs_kvzalloc(sbi, array_size(sizeof(struct sec_entry), | |
4037 | MAIN_SECS(sbi)), | |
4038 | GFP_KERNEL); | |
351df4b2 JK |
4039 | if (!sit_i->sec_entries) |
4040 | return -ENOMEM; | |
4041 | } | |
4042 | ||
4043 | /* get information related with SIT */ | |
4044 | sit_segs = le32_to_cpu(raw_super->segment_count_sit) >> 1; | |
4045 | ||
4046 | /* setup SIT bitmap from ckeckpoint pack */ | |
bbf9f7d9 | 4047 | sit_bitmap_size = __bitmap_size(sbi, SIT_BITMAP); |
351df4b2 JK |
4048 | src_bitmap = __bitmap_ptr(sbi, SIT_BITMAP); |
4049 | ||
bbf9f7d9 | 4050 | sit_i->sit_bitmap = kmemdup(src_bitmap, sit_bitmap_size, GFP_KERNEL); |
ae27d62e | 4051 | if (!sit_i->sit_bitmap) |
351df4b2 | 4052 | return -ENOMEM; |
351df4b2 | 4053 | |
ae27d62e | 4054 | #ifdef CONFIG_F2FS_CHECK_FS |
bbf9f7d9 ST |
4055 | sit_i->sit_bitmap_mir = kmemdup(src_bitmap, |
4056 | sit_bitmap_size, GFP_KERNEL); | |
ae27d62e CY |
4057 | if (!sit_i->sit_bitmap_mir) |
4058 | return -ENOMEM; | |
bbf9f7d9 ST |
4059 | |
4060 | sit_i->invalid_segmap = f2fs_kvzalloc(sbi, | |
4061 | main_bitmap_size, GFP_KERNEL); | |
4062 | if (!sit_i->invalid_segmap) | |
4063 | return -ENOMEM; | |
ae27d62e CY |
4064 | #endif |
4065 | ||
351df4b2 JK |
4066 | /* init SIT information */ |
4067 | sit_i->s_ops = &default_salloc_ops; | |
4068 | ||
4069 | sit_i->sit_base_addr = le32_to_cpu(raw_super->sit_blkaddr); | |
4070 | sit_i->sit_blocks = sit_segs << sbi->log_blocks_per_seg; | |
c79b7ff1 | 4071 | sit_i->written_valid_blocks = 0; |
bbf9f7d9 | 4072 | sit_i->bitmap_size = sit_bitmap_size; |
351df4b2 JK |
4073 | sit_i->dirty_sentries = 0; |
4074 | sit_i->sents_per_block = SIT_ENTRY_PER_BLOCK; | |
4075 | sit_i->elapsed_time = le64_to_cpu(sbi->ckpt->elapsed_time); | |
a7e679b5 | 4076 | sit_i->mounted_time = ktime_get_boottime_seconds(); |
3d26fa6b | 4077 | init_rwsem(&sit_i->sentry_lock); |
351df4b2 JK |
4078 | return 0; |
4079 | } | |
4080 | ||
4081 | static int build_free_segmap(struct f2fs_sb_info *sbi) | |
4082 | { | |
351df4b2 JK |
4083 | struct free_segmap_info *free_i; |
4084 | unsigned int bitmap_size, sec_bitmap_size; | |
4085 | ||
4086 | /* allocate memory for free segmap information */ | |
acbf054d | 4087 | free_i = f2fs_kzalloc(sbi, sizeof(struct free_segmap_info), GFP_KERNEL); |
351df4b2 JK |
4088 | if (!free_i) |
4089 | return -ENOMEM; | |
4090 | ||
4091 | SM_I(sbi)->free_info = free_i; | |
4092 | ||
7cd8558b | 4093 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
628b3d14 | 4094 | free_i->free_segmap = f2fs_kvmalloc(sbi, bitmap_size, GFP_KERNEL); |
351df4b2 JK |
4095 | if (!free_i->free_segmap) |
4096 | return -ENOMEM; | |
4097 | ||
7cd8558b | 4098 | sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
628b3d14 | 4099 | free_i->free_secmap = f2fs_kvmalloc(sbi, sec_bitmap_size, GFP_KERNEL); |
351df4b2 JK |
4100 | if (!free_i->free_secmap) |
4101 | return -ENOMEM; | |
4102 | ||
4103 | /* set all segments as dirty temporarily */ | |
4104 | memset(free_i->free_segmap, 0xff, bitmap_size); | |
4105 | memset(free_i->free_secmap, 0xff, sec_bitmap_size); | |
4106 | ||
4107 | /* init free segmap information */ | |
7cd8558b | 4108 | free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); |
351df4b2 JK |
4109 | free_i->free_segments = 0; |
4110 | free_i->free_sections = 0; | |
1a118ccf | 4111 | spin_lock_init(&free_i->segmap_lock); |
351df4b2 JK |
4112 | return 0; |
4113 | } | |
4114 | ||
4115 | static int build_curseg(struct f2fs_sb_info *sbi) | |
4116 | { | |
1042d60f | 4117 | struct curseg_info *array; |
351df4b2 JK |
4118 | int i; |
4119 | ||
026f0507 KC |
4120 | array = f2fs_kzalloc(sbi, array_size(NR_CURSEG_TYPE, sizeof(*array)), |
4121 | GFP_KERNEL); | |
351df4b2 JK |
4122 | if (!array) |
4123 | return -ENOMEM; | |
4124 | ||
4125 | SM_I(sbi)->curseg_array = array; | |
4126 | ||
4127 | for (i = 0; i < NR_CURSEG_TYPE; i++) { | |
4128 | mutex_init(&array[i].curseg_mutex); | |
acbf054d | 4129 | array[i].sum_blk = f2fs_kzalloc(sbi, PAGE_SIZE, GFP_KERNEL); |
351df4b2 JK |
4130 | if (!array[i].sum_blk) |
4131 | return -ENOMEM; | |
b7ad7512 | 4132 | init_rwsem(&array[i].journal_rwsem); |
acbf054d CY |
4133 | array[i].journal = f2fs_kzalloc(sbi, |
4134 | sizeof(struct f2fs_journal), GFP_KERNEL); | |
b7ad7512 CY |
4135 | if (!array[i].journal) |
4136 | return -ENOMEM; | |
351df4b2 JK |
4137 | array[i].segno = NULL_SEGNO; |
4138 | array[i].next_blkoff = 0; | |
4139 | } | |
4140 | return restore_curseg_summaries(sbi); | |
4141 | } | |
4142 | ||
c39a1b34 | 4143 | static int build_sit_entries(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4144 | { |
4145 | struct sit_info *sit_i = SIT_I(sbi); | |
4146 | struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); | |
b7ad7512 | 4147 | struct f2fs_journal *journal = curseg->journal; |
9c094040 YH |
4148 | struct seg_entry *se; |
4149 | struct f2fs_sit_entry sit; | |
74de593a CY |
4150 | int sit_blk_cnt = SIT_BLK_CNT(sbi); |
4151 | unsigned int i, start, end; | |
4152 | unsigned int readed, start_blk = 0; | |
c39a1b34 | 4153 | int err = 0; |
8a29c126 | 4154 | block_t total_node_blocks = 0; |
351df4b2 | 4155 | |
74de593a | 4156 | do { |
4d57b86d | 4157 | readed = f2fs_ra_meta_pages(sbi, start_blk, BIO_MAX_PAGES, |
664ba972 | 4158 | META_SIT, true); |
74de593a CY |
4159 | |
4160 | start = start_blk * sit_i->sents_per_block; | |
4161 | end = (start_blk + readed) * sit_i->sents_per_block; | |
4162 | ||
7cd8558b | 4163 | for (; start < end && start < MAIN_SEGS(sbi); start++) { |
74de593a | 4164 | struct f2fs_sit_block *sit_blk; |
74de593a CY |
4165 | struct page *page; |
4166 | ||
9c094040 | 4167 | se = &sit_i->sentries[start]; |
74de593a | 4168 | page = get_current_sit_page(sbi, start); |
edc55aaf JK |
4169 | if (IS_ERR(page)) |
4170 | return PTR_ERR(page); | |
74de593a CY |
4171 | sit_blk = (struct f2fs_sit_block *)page_address(page); |
4172 | sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; | |
4173 | f2fs_put_page(page, 1); | |
d600af23 | 4174 | |
c39a1b34 JK |
4175 | err = check_block_count(sbi, start, &sit); |
4176 | if (err) | |
4177 | return err; | |
74de593a | 4178 | seg_info_from_raw_sit(se, &sit); |
8a29c126 JK |
4179 | if (IS_NODESEG(se->type)) |
4180 | total_node_blocks += se->valid_blocks; | |
a66cdd98 JK |
4181 | |
4182 | /* build discard map only one time */ | |
7d20c8ab CY |
4183 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
4184 | memset(se->discard_map, 0xff, | |
4185 | SIT_VBLOCK_MAP_SIZE); | |
4186 | } else { | |
4187 | memcpy(se->discard_map, | |
4188 | se->cur_valid_map, | |
4189 | SIT_VBLOCK_MAP_SIZE); | |
4190 | sbi->discard_blks += | |
4191 | sbi->blocks_per_seg - | |
4192 | se->valid_blocks; | |
3e025740 | 4193 | } |
a66cdd98 | 4194 | |
2c70c5e3 | 4195 | if (__is_large_section(sbi)) |
d600af23 CY |
4196 | get_sec_entry(sbi, start)->valid_blocks += |
4197 | se->valid_blocks; | |
351df4b2 | 4198 | } |
74de593a CY |
4199 | start_blk += readed; |
4200 | } while (start_blk < sit_blk_cnt); | |
d600af23 CY |
4201 | |
4202 | down_read(&curseg->journal_rwsem); | |
4203 | for (i = 0; i < sits_in_cursum(journal); i++) { | |
d600af23 CY |
4204 | unsigned int old_valid_blocks; |
4205 | ||
4206 | start = le32_to_cpu(segno_in_journal(journal, i)); | |
b2ca374f | 4207 | if (start >= MAIN_SEGS(sbi)) { |
dcbb4c10 JP |
4208 | f2fs_err(sbi, "Wrong journal entry on segno %u", |
4209 | start); | |
10f966bb | 4210 | err = -EFSCORRUPTED; |
b2ca374f JK |
4211 | break; |
4212 | } | |
4213 | ||
d600af23 CY |
4214 | se = &sit_i->sentries[start]; |
4215 | sit = sit_in_journal(journal, i); | |
4216 | ||
4217 | old_valid_blocks = se->valid_blocks; | |
8a29c126 JK |
4218 | if (IS_NODESEG(se->type)) |
4219 | total_node_blocks -= old_valid_blocks; | |
d600af23 | 4220 | |
c39a1b34 JK |
4221 | err = check_block_count(sbi, start, &sit); |
4222 | if (err) | |
4223 | break; | |
d600af23 | 4224 | seg_info_from_raw_sit(se, &sit); |
8a29c126 JK |
4225 | if (IS_NODESEG(se->type)) |
4226 | total_node_blocks += se->valid_blocks; | |
d600af23 | 4227 | |
7d20c8ab CY |
4228 | if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) { |
4229 | memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE); | |
4230 | } else { | |
4231 | memcpy(se->discard_map, se->cur_valid_map, | |
4232 | SIT_VBLOCK_MAP_SIZE); | |
4233 | sbi->discard_blks += old_valid_blocks; | |
4234 | sbi->discard_blks -= se->valid_blocks; | |
d600af23 CY |
4235 | } |
4236 | ||
2c70c5e3 | 4237 | if (__is_large_section(sbi)) { |
d600af23 | 4238 | get_sec_entry(sbi, start)->valid_blocks += |
a9af3fdc CY |
4239 | se->valid_blocks; |
4240 | get_sec_entry(sbi, start)->valid_blocks -= | |
4241 | old_valid_blocks; | |
4242 | } | |
d600af23 CY |
4243 | } |
4244 | up_read(&curseg->journal_rwsem); | |
8a29c126 JK |
4245 | |
4246 | if (!err && total_node_blocks != valid_node_count(sbi)) { | |
dcbb4c10 JP |
4247 | f2fs_err(sbi, "SIT is corrupted node# %u vs %u", |
4248 | total_node_blocks, valid_node_count(sbi)); | |
10f966bb | 4249 | err = -EFSCORRUPTED; |
8a29c126 JK |
4250 | } |
4251 | ||
c39a1b34 | 4252 | return err; |
351df4b2 JK |
4253 | } |
4254 | ||
4255 | static void init_free_segmap(struct f2fs_sb_info *sbi) | |
4256 | { | |
4257 | unsigned int start; | |
4258 | int type; | |
4259 | ||
7cd8558b | 4260 | for (start = 0; start < MAIN_SEGS(sbi); start++) { |
351df4b2 JK |
4261 | struct seg_entry *sentry = get_seg_entry(sbi, start); |
4262 | if (!sentry->valid_blocks) | |
4263 | __set_free(sbi, start); | |
c79b7ff1 JK |
4264 | else |
4265 | SIT_I(sbi)->written_valid_blocks += | |
4266 | sentry->valid_blocks; | |
351df4b2 JK |
4267 | } |
4268 | ||
4269 | /* set use the current segments */ | |
4270 | for (type = CURSEG_HOT_DATA; type <= CURSEG_COLD_NODE; type++) { | |
4271 | struct curseg_info *curseg_t = CURSEG_I(sbi, type); | |
4272 | __set_test_and_inuse(sbi, curseg_t->segno); | |
4273 | } | |
4274 | } | |
4275 | ||
4276 | static void init_dirty_segmap(struct f2fs_sb_info *sbi) | |
4277 | { | |
4278 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4279 | struct free_segmap_info *free_i = FREE_I(sbi); | |
7cd8558b | 4280 | unsigned int segno = 0, offset = 0; |
351df4b2 JK |
4281 | unsigned short valid_blocks; |
4282 | ||
8736fbf0 | 4283 | while (1) { |
351df4b2 | 4284 | /* find dirty segment based on free segmap */ |
7cd8558b JK |
4285 | segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); |
4286 | if (segno >= MAIN_SEGS(sbi)) | |
351df4b2 JK |
4287 | break; |
4288 | offset = segno + 1; | |
302bd348 | 4289 | valid_blocks = get_valid_blocks(sbi, segno, false); |
ec325b52 | 4290 | if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) |
351df4b2 | 4291 | continue; |
ec325b52 JK |
4292 | if (valid_blocks > sbi->blocks_per_seg) { |
4293 | f2fs_bug_on(sbi, 1); | |
4294 | continue; | |
4295 | } | |
351df4b2 JK |
4296 | mutex_lock(&dirty_i->seglist_lock); |
4297 | __locate_dirty_segment(sbi, segno, DIRTY); | |
4298 | mutex_unlock(&dirty_i->seglist_lock); | |
4299 | } | |
4300 | } | |
4301 | ||
5ec4e49f | 4302 | static int init_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4303 | { |
4304 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
7cd8558b | 4305 | unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); |
351df4b2 | 4306 | |
628b3d14 | 4307 | dirty_i->victim_secmap = f2fs_kvzalloc(sbi, bitmap_size, GFP_KERNEL); |
5ec4e49f | 4308 | if (!dirty_i->victim_secmap) |
351df4b2 JK |
4309 | return -ENOMEM; |
4310 | return 0; | |
4311 | } | |
4312 | ||
4313 | static int build_dirty_segmap(struct f2fs_sb_info *sbi) | |
4314 | { | |
4315 | struct dirty_seglist_info *dirty_i; | |
4316 | unsigned int bitmap_size, i; | |
4317 | ||
4318 | /* allocate memory for dirty segments list information */ | |
acbf054d CY |
4319 | dirty_i = f2fs_kzalloc(sbi, sizeof(struct dirty_seglist_info), |
4320 | GFP_KERNEL); | |
351df4b2 JK |
4321 | if (!dirty_i) |
4322 | return -ENOMEM; | |
4323 | ||
4324 | SM_I(sbi)->dirty_info = dirty_i; | |
4325 | mutex_init(&dirty_i->seglist_lock); | |
4326 | ||
7cd8558b | 4327 | bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); |
351df4b2 JK |
4328 | |
4329 | for (i = 0; i < NR_DIRTY_TYPE; i++) { | |
628b3d14 CY |
4330 | dirty_i->dirty_segmap[i] = f2fs_kvzalloc(sbi, bitmap_size, |
4331 | GFP_KERNEL); | |
351df4b2 JK |
4332 | if (!dirty_i->dirty_segmap[i]) |
4333 | return -ENOMEM; | |
4334 | } | |
4335 | ||
4336 | init_dirty_segmap(sbi); | |
5ec4e49f | 4337 | return init_victim_secmap(sbi); |
351df4b2 JK |
4338 | } |
4339 | ||
c854f4d6 CY |
4340 | static int sanity_check_curseg(struct f2fs_sb_info *sbi) |
4341 | { | |
4342 | int i; | |
4343 | ||
4344 | /* | |
4345 | * In LFS/SSR curseg, .next_blkoff should point to an unused blkaddr; | |
4346 | * In LFS curseg, all blkaddr after .next_blkoff should be unused. | |
4347 | */ | |
4348 | for (i = 0; i < NO_CHECK_TYPE; i++) { | |
4349 | struct curseg_info *curseg = CURSEG_I(sbi, i); | |
4350 | struct seg_entry *se = get_seg_entry(sbi, curseg->segno); | |
4351 | unsigned int blkofs = curseg->next_blkoff; | |
4352 | ||
4353 | if (f2fs_test_bit(blkofs, se->cur_valid_map)) | |
4354 | goto out; | |
4355 | ||
4356 | if (curseg->alloc_type == SSR) | |
4357 | continue; | |
4358 | ||
4359 | for (blkofs += 1; blkofs < sbi->blocks_per_seg; blkofs++) { | |
4360 | if (!f2fs_test_bit(blkofs, se->cur_valid_map)) | |
4361 | continue; | |
4362 | out: | |
dcbb4c10 JP |
4363 | f2fs_err(sbi, |
4364 | "Current segment's next free block offset is inconsistent with bitmap, logtype:%u, segno:%u, type:%u, next_blkoff:%u, blkofs:%u", | |
4365 | i, curseg->segno, curseg->alloc_type, | |
4366 | curseg->next_blkoff, blkofs); | |
10f966bb | 4367 | return -EFSCORRUPTED; |
c854f4d6 CY |
4368 | } |
4369 | } | |
4370 | return 0; | |
4371 | } | |
4372 | ||
c426d991 SK |
4373 | #ifdef CONFIG_BLK_DEV_ZONED |
4374 | ||
d508c94e SK |
4375 | static int check_zone_write_pointer(struct f2fs_sb_info *sbi, |
4376 | struct f2fs_dev_info *fdev, | |
4377 | struct blk_zone *zone) | |
4378 | { | |
4379 | unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno; | |
4380 | block_t zone_block, wp_block, last_valid_block; | |
4381 | unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT; | |
4382 | int i, s, b, ret; | |
4383 | struct seg_entry *se; | |
4384 | ||
4385 | if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ) | |
4386 | return 0; | |
4387 | ||
4388 | wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block); | |
4389 | wp_segno = GET_SEGNO(sbi, wp_block); | |
4390 | wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno); | |
4391 | zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block); | |
4392 | zone_segno = GET_SEGNO(sbi, zone_block); | |
4393 | zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno); | |
4394 | ||
4395 | if (zone_segno >= MAIN_SEGS(sbi)) | |
4396 | return 0; | |
4397 | ||
4398 | /* | |
4399 | * Skip check of zones cursegs point to, since | |
4400 | * fix_curseg_write_pointer() checks them. | |
4401 | */ | |
4402 | for (i = 0; i < NO_CHECK_TYPE; i++) | |
4403 | if (zone_secno == GET_SEC_FROM_SEG(sbi, | |
4404 | CURSEG_I(sbi, i)->segno)) | |
4405 | return 0; | |
4406 | ||
4407 | /* | |
4408 | * Get last valid block of the zone. | |
4409 | */ | |
4410 | last_valid_block = zone_block - 1; | |
4411 | for (s = sbi->segs_per_sec - 1; s >= 0; s--) { | |
4412 | segno = zone_segno + s; | |
4413 | se = get_seg_entry(sbi, segno); | |
4414 | for (b = sbi->blocks_per_seg - 1; b >= 0; b--) | |
4415 | if (f2fs_test_bit(b, se->cur_valid_map)) { | |
4416 | last_valid_block = START_BLOCK(sbi, segno) + b; | |
4417 | break; | |
4418 | } | |
4419 | if (last_valid_block >= zone_block) | |
4420 | break; | |
4421 | } | |
4422 | ||
4423 | /* | |
4424 | * If last valid block is beyond the write pointer, report the | |
4425 | * inconsistency. This inconsistency does not cause write error | |
4426 | * because the zone will not be selected for write operation until | |
4427 | * it get discarded. Just report it. | |
4428 | */ | |
4429 | if (last_valid_block >= wp_block) { | |
4430 | f2fs_notice(sbi, "Valid block beyond write pointer: " | |
4431 | "valid block[0x%x,0x%x] wp[0x%x,0x%x]", | |
4432 | GET_SEGNO(sbi, last_valid_block), | |
4433 | GET_BLKOFF_FROM_SEG0(sbi, last_valid_block), | |
4434 | wp_segno, wp_blkoff); | |
4435 | return 0; | |
4436 | } | |
4437 | ||
4438 | /* | |
4439 | * If there is no valid block in the zone and if write pointer is | |
4440 | * not at zone start, reset the write pointer. | |
4441 | */ | |
4442 | if (last_valid_block + 1 == zone_block && zone->wp != zone->start) { | |
4443 | f2fs_notice(sbi, | |
4444 | "Zone without valid block has non-zero write " | |
4445 | "pointer. Reset the write pointer: wp[0x%x,0x%x]", | |
4446 | wp_segno, wp_blkoff); | |
4447 | ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block, | |
4448 | zone->len >> log_sectors_per_block); | |
4449 | if (ret) { | |
4450 | f2fs_err(sbi, "Discard zone failed: %s (errno=%d)", | |
4451 | fdev->path, ret); | |
4452 | return ret; | |
4453 | } | |
4454 | } | |
4455 | ||
4456 | return 0; | |
4457 | } | |
4458 | ||
c426d991 SK |
4459 | static struct f2fs_dev_info *get_target_zoned_dev(struct f2fs_sb_info *sbi, |
4460 | block_t zone_blkaddr) | |
4461 | { | |
4462 | int i; | |
4463 | ||
4464 | for (i = 0; i < sbi->s_ndevs; i++) { | |
4465 | if (!bdev_is_zoned(FDEV(i).bdev)) | |
4466 | continue; | |
4467 | if (sbi->s_ndevs == 1 || (FDEV(i).start_blk <= zone_blkaddr && | |
4468 | zone_blkaddr <= FDEV(i).end_blk)) | |
4469 | return &FDEV(i); | |
4470 | } | |
4471 | ||
4472 | return NULL; | |
4473 | } | |
4474 | ||
4475 | static int report_one_zone_cb(struct blk_zone *zone, unsigned int idx, | |
4476 | void *data) { | |
4477 | memcpy(data, zone, sizeof(struct blk_zone)); | |
4478 | return 0; | |
4479 | } | |
4480 | ||
4481 | static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) | |
4482 | { | |
4483 | struct curseg_info *cs = CURSEG_I(sbi, type); | |
4484 | struct f2fs_dev_info *zbd; | |
4485 | struct blk_zone zone; | |
4486 | unsigned int cs_section, wp_segno, wp_blkoff, wp_sector_off; | |
4487 | block_t cs_zone_block, wp_block; | |
4488 | unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT; | |
4489 | sector_t zone_sector; | |
4490 | int err; | |
4491 | ||
4492 | cs_section = GET_SEC_FROM_SEG(sbi, cs->segno); | |
4493 | cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section)); | |
4494 | ||
4495 | zbd = get_target_zoned_dev(sbi, cs_zone_block); | |
4496 | if (!zbd) | |
4497 | return 0; | |
4498 | ||
4499 | /* report zone for the sector the curseg points to */ | |
4500 | zone_sector = (sector_t)(cs_zone_block - zbd->start_blk) | |
4501 | << log_sectors_per_block; | |
4502 | err = blkdev_report_zones(zbd->bdev, zone_sector, 1, | |
4503 | report_one_zone_cb, &zone); | |
4504 | if (err != 1) { | |
4505 | f2fs_err(sbi, "Report zone failed: %s errno=(%d)", | |
4506 | zbd->path, err); | |
4507 | return err; | |
4508 | } | |
4509 | ||
4510 | if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ) | |
4511 | return 0; | |
4512 | ||
4513 | wp_block = zbd->start_blk + (zone.wp >> log_sectors_per_block); | |
4514 | wp_segno = GET_SEGNO(sbi, wp_block); | |
4515 | wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno); | |
4516 | wp_sector_off = zone.wp & GENMASK(log_sectors_per_block - 1, 0); | |
4517 | ||
4518 | if (cs->segno == wp_segno && cs->next_blkoff == wp_blkoff && | |
4519 | wp_sector_off == 0) | |
4520 | return 0; | |
4521 | ||
4522 | f2fs_notice(sbi, "Unaligned curseg[%d] with write pointer: " | |
4523 | "curseg[0x%x,0x%x] wp[0x%x,0x%x]", | |
4524 | type, cs->segno, cs->next_blkoff, wp_segno, wp_blkoff); | |
4525 | ||
4526 | f2fs_notice(sbi, "Assign new section to curseg[%d]: " | |
4527 | "curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff); | |
4528 | allocate_segment_by_default(sbi, type, true); | |
4529 | ||
d508c94e SK |
4530 | /* check consistency of the zone curseg pointed to */ |
4531 | if (check_zone_write_pointer(sbi, zbd, &zone)) | |
4532 | return -EIO; | |
4533 | ||
c426d991 SK |
4534 | /* check newly assigned zone */ |
4535 | cs_section = GET_SEC_FROM_SEG(sbi, cs->segno); | |
4536 | cs_zone_block = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, cs_section)); | |
4537 | ||
4538 | zbd = get_target_zoned_dev(sbi, cs_zone_block); | |
4539 | if (!zbd) | |
4540 | return 0; | |
4541 | ||
4542 | zone_sector = (sector_t)(cs_zone_block - zbd->start_blk) | |
4543 | << log_sectors_per_block; | |
4544 | err = blkdev_report_zones(zbd->bdev, zone_sector, 1, | |
4545 | report_one_zone_cb, &zone); | |
4546 | if (err != 1) { | |
4547 | f2fs_err(sbi, "Report zone failed: %s errno=(%d)", | |
4548 | zbd->path, err); | |
4549 | return err; | |
4550 | } | |
4551 | ||
4552 | if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ) | |
4553 | return 0; | |
4554 | ||
4555 | if (zone.wp != zone.start) { | |
4556 | f2fs_notice(sbi, | |
4557 | "New zone for curseg[%d] is not yet discarded. " | |
4558 | "Reset the zone: curseg[0x%x,0x%x]", | |
4559 | type, cs->segno, cs->next_blkoff); | |
4560 | err = __f2fs_issue_discard_zone(sbi, zbd->bdev, | |
4561 | zone_sector >> log_sectors_per_block, | |
4562 | zone.len >> log_sectors_per_block); | |
4563 | if (err) { | |
4564 | f2fs_err(sbi, "Discard zone failed: %s (errno=%d)", | |
4565 | zbd->path, err); | |
4566 | return err; | |
4567 | } | |
4568 | } | |
4569 | ||
4570 | return 0; | |
4571 | } | |
4572 | ||
4573 | int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi) | |
4574 | { | |
4575 | int i, ret; | |
4576 | ||
4577 | for (i = 0; i < NO_CHECK_TYPE; i++) { | |
4578 | ret = fix_curseg_write_pointer(sbi, i); | |
4579 | if (ret) | |
4580 | return ret; | |
4581 | } | |
4582 | ||
4583 | return 0; | |
4584 | } | |
d508c94e SK |
4585 | |
4586 | struct check_zone_write_pointer_args { | |
4587 | struct f2fs_sb_info *sbi; | |
4588 | struct f2fs_dev_info *fdev; | |
4589 | }; | |
4590 | ||
4591 | static int check_zone_write_pointer_cb(struct blk_zone *zone, unsigned int idx, | |
4592 | void *data) { | |
4593 | struct check_zone_write_pointer_args *args; | |
4594 | args = (struct check_zone_write_pointer_args *)data; | |
4595 | ||
4596 | return check_zone_write_pointer(args->sbi, args->fdev, zone); | |
4597 | } | |
4598 | ||
4599 | int f2fs_check_write_pointer(struct f2fs_sb_info *sbi) | |
4600 | { | |
4601 | int i, ret; | |
4602 | struct check_zone_write_pointer_args args; | |
4603 | ||
4604 | for (i = 0; i < sbi->s_ndevs; i++) { | |
4605 | if (!bdev_is_zoned(FDEV(i).bdev)) | |
4606 | continue; | |
4607 | ||
4608 | args.sbi = sbi; | |
4609 | args.fdev = &FDEV(i); | |
4610 | ret = blkdev_report_zones(FDEV(i).bdev, 0, BLK_ALL_ZONES, | |
4611 | check_zone_write_pointer_cb, &args); | |
4612 | if (ret < 0) | |
4613 | return ret; | |
4614 | } | |
4615 | ||
4616 | return 0; | |
4617 | } | |
c426d991 SK |
4618 | #else |
4619 | int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi) | |
4620 | { | |
4621 | return 0; | |
4622 | } | |
d508c94e SK |
4623 | |
4624 | int f2fs_check_write_pointer(struct f2fs_sb_info *sbi) | |
4625 | { | |
4626 | return 0; | |
4627 | } | |
c426d991 SK |
4628 | #endif |
4629 | ||
0a8165d7 | 4630 | /* |
351df4b2 JK |
4631 | * Update min, max modified time for cost-benefit GC algorithm |
4632 | */ | |
4633 | static void init_min_max_mtime(struct f2fs_sb_info *sbi) | |
4634 | { | |
4635 | struct sit_info *sit_i = SIT_I(sbi); | |
4636 | unsigned int segno; | |
4637 | ||
3d26fa6b | 4638 | down_write(&sit_i->sentry_lock); |
351df4b2 | 4639 | |
5ad25442 | 4640 | sit_i->min_mtime = ULLONG_MAX; |
351df4b2 | 4641 | |
7cd8558b | 4642 | for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { |
351df4b2 JK |
4643 | unsigned int i; |
4644 | unsigned long long mtime = 0; | |
4645 | ||
4646 | for (i = 0; i < sbi->segs_per_sec; i++) | |
4647 | mtime += get_seg_entry(sbi, segno + i)->mtime; | |
4648 | ||
4649 | mtime = div_u64(mtime, sbi->segs_per_sec); | |
4650 | ||
4651 | if (sit_i->min_mtime > mtime) | |
4652 | sit_i->min_mtime = mtime; | |
4653 | } | |
a1f72ac2 | 4654 | sit_i->max_mtime = get_mtime(sbi, false); |
3d26fa6b | 4655 | up_write(&sit_i->sentry_lock); |
351df4b2 JK |
4656 | } |
4657 | ||
4d57b86d | 4658 | int f2fs_build_segment_manager(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4659 | { |
4660 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); | |
4661 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
1042d60f | 4662 | struct f2fs_sm_info *sm_info; |
351df4b2 JK |
4663 | int err; |
4664 | ||
acbf054d | 4665 | sm_info = f2fs_kzalloc(sbi, sizeof(struct f2fs_sm_info), GFP_KERNEL); |
351df4b2 JK |
4666 | if (!sm_info) |
4667 | return -ENOMEM; | |
4668 | ||
4669 | /* init sm info */ | |
4670 | sbi->sm_info = sm_info; | |
351df4b2 JK |
4671 | sm_info->seg0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
4672 | sm_info->main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
4673 | sm_info->segment_count = le32_to_cpu(raw_super->segment_count); | |
4674 | sm_info->reserved_segments = le32_to_cpu(ckpt->rsvd_segment_count); | |
4675 | sm_info->ovp_segments = le32_to_cpu(ckpt->overprov_segment_count); | |
4676 | sm_info->main_segments = le32_to_cpu(raw_super->segment_count_main); | |
4677 | sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
58c41035 JK |
4678 | sm_info->rec_prefree_segments = sm_info->main_segments * |
4679 | DEF_RECLAIM_PREFREE_SEGMENTS / 100; | |
44a83499 JK |
4680 | if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) |
4681 | sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; | |
4682 | ||
b0332a0f | 4683 | if (!f2fs_lfs_mode(sbi)) |
52763a4b | 4684 | sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; |
216fbd64 | 4685 | sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; |
c1ce1b02 | 4686 | sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; |
853137ce | 4687 | sm_info->min_seq_blocks = sbi->blocks_per_seg * sbi->segs_per_sec; |
ef095d19 | 4688 | sm_info->min_hot_blocks = DEF_MIN_HOT_BLOCKS; |
a2a12b67 | 4689 | sm_info->min_ssr_sections = reserved_sections(sbi); |
351df4b2 | 4690 | |
184a5cd2 CY |
4691 | INIT_LIST_HEAD(&sm_info->sit_entry_set); |
4692 | ||
2b60311d CY |
4693 | init_rwsem(&sm_info->curseg_lock); |
4694 | ||
d4fdf8ba | 4695 | if (!f2fs_readonly(sbi->sb)) { |
4d57b86d | 4696 | err = f2fs_create_flush_cmd_control(sbi); |
2163d198 | 4697 | if (err) |
a688b9d9 | 4698 | return err; |
6b4afdd7 JK |
4699 | } |
4700 | ||
0b54fb84 JK |
4701 | err = create_discard_cmd_control(sbi); |
4702 | if (err) | |
4703 | return err; | |
4704 | ||
351df4b2 JK |
4705 | err = build_sit_info(sbi); |
4706 | if (err) | |
4707 | return err; | |
4708 | err = build_free_segmap(sbi); | |
4709 | if (err) | |
4710 | return err; | |
4711 | err = build_curseg(sbi); | |
4712 | if (err) | |
4713 | return err; | |
4714 | ||
4715 | /* reinit free segmap based on SIT */ | |
c39a1b34 JK |
4716 | err = build_sit_entries(sbi); |
4717 | if (err) | |
4718 | return err; | |
351df4b2 JK |
4719 | |
4720 | init_free_segmap(sbi); | |
4721 | err = build_dirty_segmap(sbi); | |
4722 | if (err) | |
4723 | return err; | |
4724 | ||
c854f4d6 CY |
4725 | err = sanity_check_curseg(sbi); |
4726 | if (err) | |
4727 | return err; | |
4728 | ||
351df4b2 JK |
4729 | init_min_max_mtime(sbi); |
4730 | return 0; | |
4731 | } | |
4732 | ||
4733 | static void discard_dirty_segmap(struct f2fs_sb_info *sbi, | |
4734 | enum dirty_type dirty_type) | |
4735 | { | |
4736 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4737 | ||
4738 | mutex_lock(&dirty_i->seglist_lock); | |
39307a8e | 4739 | kvfree(dirty_i->dirty_segmap[dirty_type]); |
351df4b2 JK |
4740 | dirty_i->nr_dirty[dirty_type] = 0; |
4741 | mutex_unlock(&dirty_i->seglist_lock); | |
4742 | } | |
4743 | ||
5ec4e49f | 4744 | static void destroy_victim_secmap(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4745 | { |
4746 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
39307a8e | 4747 | kvfree(dirty_i->victim_secmap); |
351df4b2 JK |
4748 | } |
4749 | ||
4750 | static void destroy_dirty_segmap(struct f2fs_sb_info *sbi) | |
4751 | { | |
4752 | struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); | |
4753 | int i; | |
4754 | ||
4755 | if (!dirty_i) | |
4756 | return; | |
4757 | ||
4758 | /* discard pre-free/dirty segments list */ | |
4759 | for (i = 0; i < NR_DIRTY_TYPE; i++) | |
4760 | discard_dirty_segmap(sbi, i); | |
4761 | ||
5ec4e49f | 4762 | destroy_victim_secmap(sbi); |
351df4b2 | 4763 | SM_I(sbi)->dirty_info = NULL; |
5222595d | 4764 | kvfree(dirty_i); |
351df4b2 JK |
4765 | } |
4766 | ||
4767 | static void destroy_curseg(struct f2fs_sb_info *sbi) | |
4768 | { | |
4769 | struct curseg_info *array = SM_I(sbi)->curseg_array; | |
4770 | int i; | |
4771 | ||
4772 | if (!array) | |
4773 | return; | |
4774 | SM_I(sbi)->curseg_array = NULL; | |
b7ad7512 | 4775 | for (i = 0; i < NR_CURSEG_TYPE; i++) { |
5222595d JK |
4776 | kvfree(array[i].sum_blk); |
4777 | kvfree(array[i].journal); | |
b7ad7512 | 4778 | } |
5222595d | 4779 | kvfree(array); |
351df4b2 JK |
4780 | } |
4781 | ||
4782 | static void destroy_free_segmap(struct f2fs_sb_info *sbi) | |
4783 | { | |
4784 | struct free_segmap_info *free_i = SM_I(sbi)->free_info; | |
4785 | if (!free_i) | |
4786 | return; | |
4787 | SM_I(sbi)->free_info = NULL; | |
39307a8e JK |
4788 | kvfree(free_i->free_segmap); |
4789 | kvfree(free_i->free_secmap); | |
5222595d | 4790 | kvfree(free_i); |
351df4b2 JK |
4791 | } |
4792 | ||
4793 | static void destroy_sit_info(struct f2fs_sb_info *sbi) | |
4794 | { | |
4795 | struct sit_info *sit_i = SIT_I(sbi); | |
351df4b2 JK |
4796 | |
4797 | if (!sit_i) | |
4798 | return; | |
4799 | ||
2fde3dd1 CY |
4800 | if (sit_i->sentries) |
4801 | kvfree(sit_i->bitmap); | |
5222595d | 4802 | kvfree(sit_i->tmp_map); |
60a3b782 | 4803 | |
39307a8e JK |
4804 | kvfree(sit_i->sentries); |
4805 | kvfree(sit_i->sec_entries); | |
4806 | kvfree(sit_i->dirty_sentries_bitmap); | |
351df4b2 JK |
4807 | |
4808 | SM_I(sbi)->sit_info = NULL; | |
5222595d | 4809 | kvfree(sit_i->sit_bitmap); |
ae27d62e | 4810 | #ifdef CONFIG_F2FS_CHECK_FS |
5222595d | 4811 | kvfree(sit_i->sit_bitmap_mir); |
bbf9f7d9 | 4812 | kvfree(sit_i->invalid_segmap); |
ae27d62e | 4813 | #endif |
5222595d | 4814 | kvfree(sit_i); |
351df4b2 JK |
4815 | } |
4816 | ||
4d57b86d | 4817 | void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi) |
351df4b2 JK |
4818 | { |
4819 | struct f2fs_sm_info *sm_info = SM_I(sbi); | |
a688b9d9 | 4820 | |
3b03f724 CY |
4821 | if (!sm_info) |
4822 | return; | |
4d57b86d | 4823 | f2fs_destroy_flush_cmd_control(sbi, true); |
f099405f | 4824 | destroy_discard_cmd_control(sbi); |
351df4b2 JK |
4825 | destroy_dirty_segmap(sbi); |
4826 | destroy_curseg(sbi); | |
4827 | destroy_free_segmap(sbi); | |
4828 | destroy_sit_info(sbi); | |
4829 | sbi->sm_info = NULL; | |
5222595d | 4830 | kvfree(sm_info); |
351df4b2 | 4831 | } |
7fd9e544 | 4832 | |
4d57b86d | 4833 | int __init f2fs_create_segment_manager_caches(void) |
7fd9e544 | 4834 | { |
98510003 | 4835 | discard_entry_slab = f2fs_kmem_cache_create("f2fs_discard_entry", |
e8512d2e | 4836 | sizeof(struct discard_entry)); |
7fd9e544 | 4837 | if (!discard_entry_slab) |
184a5cd2 CY |
4838 | goto fail; |
4839 | ||
98510003 | 4840 | discard_cmd_slab = f2fs_kmem_cache_create("f2fs_discard_cmd", |
b01a9201 JK |
4841 | sizeof(struct discard_cmd)); |
4842 | if (!discard_cmd_slab) | |
6ab2a308 | 4843 | goto destroy_discard_entry; |
275b66b0 | 4844 | |
98510003 | 4845 | sit_entry_set_slab = f2fs_kmem_cache_create("f2fs_sit_entry_set", |
c9ee0085 | 4846 | sizeof(struct sit_entry_set)); |
184a5cd2 | 4847 | if (!sit_entry_set_slab) |
b01a9201 | 4848 | goto destroy_discard_cmd; |
88b88a66 | 4849 | |
98510003 | 4850 | inmem_entry_slab = f2fs_kmem_cache_create("f2fs_inmem_page_entry", |
88b88a66 JK |
4851 | sizeof(struct inmem_pages)); |
4852 | if (!inmem_entry_slab) | |
4853 | goto destroy_sit_entry_set; | |
7fd9e544 | 4854 | return 0; |
184a5cd2 | 4855 | |
88b88a66 JK |
4856 | destroy_sit_entry_set: |
4857 | kmem_cache_destroy(sit_entry_set_slab); | |
b01a9201 JK |
4858 | destroy_discard_cmd: |
4859 | kmem_cache_destroy(discard_cmd_slab); | |
6ab2a308 | 4860 | destroy_discard_entry: |
184a5cd2 CY |
4861 | kmem_cache_destroy(discard_entry_slab); |
4862 | fail: | |
4863 | return -ENOMEM; | |
7fd9e544 JK |
4864 | } |
4865 | ||
4d57b86d | 4866 | void f2fs_destroy_segment_manager_caches(void) |
7fd9e544 | 4867 | { |
184a5cd2 | 4868 | kmem_cache_destroy(sit_entry_set_slab); |
b01a9201 | 4869 | kmem_cache_destroy(discard_cmd_slab); |
7fd9e544 | 4870 | kmem_cache_destroy(discard_entry_slab); |
88b88a66 | 4871 | kmem_cache_destroy(inmem_entry_slab); |
7fd9e544 | 4872 | } |