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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
eb47b800 JK |
3 | * fs/f2fs/data.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
eb47b800 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/buffer_head.h> | |
11 | #include <linux/mpage.h> | |
12 | #include <linux/writeback.h> | |
13 | #include <linux/backing-dev.h> | |
8f46dcae | 14 | #include <linux/pagevec.h> |
eb47b800 JK |
15 | #include <linux/blkdev.h> |
16 | #include <linux/bio.h> | |
27aacd28 | 17 | #include <linux/blk-crypto.h> |
4969c06a | 18 | #include <linux/swap.h> |
690e4a3e | 19 | #include <linux/prefetch.h> |
e2e40f2c | 20 | #include <linux/uio.h> |
f1e88660 | 21 | #include <linux/cleancache.h> |
174cd4b1 | 22 | #include <linux/sched/signal.h> |
10c5db28 | 23 | #include <linux/fiemap.h> |
1517c1a7 | 24 | #include <linux/iomap.h> |
eb47b800 JK |
25 | |
26 | #include "f2fs.h" | |
27 | #include "node.h" | |
28 | #include "segment.h" | |
52118743 | 29 | #include "iostat.h" |
848753aa | 30 | #include <trace/events/f2fs.h> |
eb47b800 | 31 | |
6dbb1796 EB |
32 | #define NUM_PREALLOC_POST_READ_CTXS 128 |
33 | ||
34 | static struct kmem_cache *bio_post_read_ctx_cache; | |
0b20fcec | 35 | static struct kmem_cache *bio_entry_slab; |
6dbb1796 | 36 | static mempool_t *bio_post_read_ctx_pool; |
f543805f CY |
37 | static struct bio_set f2fs_bioset; |
38 | ||
39 | #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE | |
40 | ||
41 | int __init f2fs_init_bioset(void) | |
42 | { | |
43 | if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, | |
44 | 0, BIOSET_NEED_BVECS)) | |
45 | return -ENOMEM; | |
46 | return 0; | |
47 | } | |
48 | ||
49 | void f2fs_destroy_bioset(void) | |
50 | { | |
51 | bioset_exit(&f2fs_bioset); | |
52 | } | |
53 | ||
36951b38 CY |
54 | static bool __is_cp_guaranteed(struct page *page) |
55 | { | |
56 | struct address_space *mapping = page->mapping; | |
57 | struct inode *inode; | |
58 | struct f2fs_sb_info *sbi; | |
59 | ||
60 | if (!mapping) | |
61 | return false; | |
62 | ||
63 | inode = mapping->host; | |
64 | sbi = F2FS_I_SB(inode); | |
65 | ||
66 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
a87aff1d | 67 | inode->i_ino == F2FS_NODE_INO(sbi) || |
b763f3be CY |
68 | S_ISDIR(inode->i_mode)) |
69 | return true; | |
70 | ||
71 | if (f2fs_is_compressed_page(page)) | |
72 | return false; | |
73 | if ((S_ISREG(inode->i_mode) && | |
af033b2a | 74 | (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || |
b763f3be | 75 | page_private_gcing(page)) |
36951b38 CY |
76 | return true; |
77 | return false; | |
78 | } | |
79 | ||
5f9abab4 JK |
80 | static enum count_type __read_io_type(struct page *page) |
81 | { | |
4969c06a | 82 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
83 | |
84 | if (mapping) { | |
85 | struct inode *inode = mapping->host; | |
86 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
87 | ||
88 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
89 | return F2FS_RD_META; | |
90 | ||
91 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
92 | return F2FS_RD_NODE; | |
93 | } | |
94 | return F2FS_RD_DATA; | |
95 | } | |
96 | ||
6dbb1796 EB |
97 | /* postprocessing steps for read bios */ |
98 | enum bio_post_read_step { | |
7f59b277 EB |
99 | #ifdef CONFIG_FS_ENCRYPTION |
100 | STEP_DECRYPT = 1 << 0, | |
101 | #else | |
102 | STEP_DECRYPT = 0, /* compile out the decryption-related code */ | |
103 | #endif | |
104 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
105 | STEP_DECOMPRESS = 1 << 1, | |
106 | #else | |
107 | STEP_DECOMPRESS = 0, /* compile out the decompression-related code */ | |
108 | #endif | |
109 | #ifdef CONFIG_FS_VERITY | |
110 | STEP_VERITY = 1 << 2, | |
111 | #else | |
112 | STEP_VERITY = 0, /* compile out the verity-related code */ | |
113 | #endif | |
6dbb1796 EB |
114 | }; |
115 | ||
116 | struct bio_post_read_ctx { | |
117 | struct bio *bio; | |
4c8ff709 | 118 | struct f2fs_sb_info *sbi; |
6dbb1796 | 119 | struct work_struct work; |
6dbb1796 | 120 | unsigned int enabled_steps; |
4931e0c9 | 121 | block_t fs_blkaddr; |
6dbb1796 EB |
122 | }; |
123 | ||
7f59b277 | 124 | static void f2fs_finish_read_bio(struct bio *bio) |
93dfe2ac | 125 | { |
6dbb1796 | 126 | struct bio_vec *bv; |
6dc4f100 | 127 | struct bvec_iter_all iter_all; |
93dfe2ac | 128 | |
7f59b277 EB |
129 | /* |
130 | * Update and unlock the bio's pagecache pages, and put the | |
131 | * decompression context for any compressed pages. | |
132 | */ | |
2b070cfe | 133 | bio_for_each_segment_all(bv, bio, iter_all) { |
7f59b277 | 134 | struct page *page = bv->bv_page; |
6dbb1796 | 135 | |
7f59b277 EB |
136 | if (f2fs_is_compressed_page(page)) { |
137 | if (bio->bi_status) | |
6ce19aff | 138 | f2fs_end_read_compressed_page(page, true, 0); |
7f59b277 | 139 | f2fs_put_page_dic(page); |
4c8ff709 CY |
140 | continue; |
141 | } | |
4c8ff709 | 142 | |
7f59b277 | 143 | /* PG_error was set if decryption or verity failed. */ |
6dbb1796 EB |
144 | if (bio->bi_status || PageError(page)) { |
145 | ClearPageUptodate(page); | |
fb7d70db JK |
146 | /* will re-read again later */ |
147 | ClearPageError(page); | |
6dbb1796 EB |
148 | } else { |
149 | SetPageUptodate(page); | |
150 | } | |
5f9abab4 | 151 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
152 | unlock_page(page); |
153 | } | |
79bbefb1 | 154 | |
7f59b277 EB |
155 | if (bio->bi_private) |
156 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
157 | bio_put(bio); | |
4c8ff709 | 158 | } |
4c8ff709 | 159 | |
7f59b277 | 160 | static void f2fs_verify_bio(struct work_struct *work) |
6dbb1796 EB |
161 | { |
162 | struct bio_post_read_ctx *ctx = | |
163 | container_of(work, struct bio_post_read_ctx, work); | |
644c8c92 | 164 | struct bio *bio = ctx->bio; |
7f59b277 | 165 | bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS); |
644c8c92 EB |
166 | |
167 | /* | |
168 | * fsverity_verify_bio() may call readpages() again, and while verity | |
7f59b277 EB |
169 | * will be disabled for this, decryption and/or decompression may still |
170 | * be needed, resulting in another bio_post_read_ctx being allocated. | |
171 | * So to prevent deadlocks we need to release the current ctx to the | |
172 | * mempool first. This assumes that verity is the last post-read step. | |
644c8c92 EB |
173 | */ |
174 | mempool_free(ctx, bio_post_read_ctx_pool); | |
175 | bio->bi_private = NULL; | |
6dbb1796 | 176 | |
7f59b277 EB |
177 | /* |
178 | * Verify the bio's pages with fs-verity. Exclude compressed pages, | |
179 | * as those were handled separately by f2fs_end_read_compressed_page(). | |
180 | */ | |
181 | if (may_have_compressed_pages) { | |
182 | struct bio_vec *bv; | |
183 | struct bvec_iter_all iter_all; | |
184 | ||
185 | bio_for_each_segment_all(bv, bio, iter_all) { | |
186 | struct page *page = bv->bv_page; | |
187 | ||
188 | if (!f2fs_is_compressed_page(page) && | |
189 | !PageError(page) && !fsverity_verify_page(page)) | |
190 | SetPageError(page); | |
191 | } | |
192 | } else { | |
193 | fsverity_verify_bio(bio); | |
4c8ff709 | 194 | } |
6dbb1796 | 195 | |
7f59b277 | 196 | f2fs_finish_read_bio(bio); |
6dbb1796 EB |
197 | } |
198 | ||
7f59b277 EB |
199 | /* |
200 | * If the bio's data needs to be verified with fs-verity, then enqueue the | |
201 | * verity work for the bio. Otherwise finish the bio now. | |
202 | * | |
203 | * Note that to avoid deadlocks, the verity work can't be done on the | |
204 | * decryption/decompression workqueue. This is because verifying the data pages | |
205 | * can involve reading verity metadata pages from the file, and these verity | |
206 | * metadata pages may be encrypted and/or compressed. | |
207 | */ | |
208 | static void f2fs_verify_and_finish_bio(struct bio *bio) | |
95ae251f | 209 | { |
7f59b277 | 210 | struct bio_post_read_ctx *ctx = bio->bi_private; |
4c8ff709 | 211 | |
7f59b277 EB |
212 | if (ctx && (ctx->enabled_steps & STEP_VERITY)) { |
213 | INIT_WORK(&ctx->work, f2fs_verify_bio); | |
4c8ff709 | 214 | fsverity_enqueue_verify_work(&ctx->work); |
7f59b277 EB |
215 | } else { |
216 | f2fs_finish_read_bio(bio); | |
4c8ff709 | 217 | } |
4c8ff709 | 218 | } |
95ae251f | 219 | |
7f59b277 EB |
220 | /* |
221 | * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last | |
222 | * remaining page was read by @ctx->bio. | |
223 | * | |
224 | * Note that a bio may span clusters (even a mix of compressed and uncompressed | |
225 | * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates | |
226 | * that the bio includes at least one compressed page. The actual decompression | |
227 | * is done on a per-cluster basis, not a per-bio basis. | |
228 | */ | |
229 | static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx) | |
6dbb1796 | 230 | { |
7f59b277 EB |
231 | struct bio_vec *bv; |
232 | struct bvec_iter_all iter_all; | |
233 | bool all_compressed = true; | |
4931e0c9 | 234 | block_t blkaddr = ctx->fs_blkaddr; |
4c8ff709 | 235 | |
7f59b277 EB |
236 | bio_for_each_segment_all(bv, ctx->bio, iter_all) { |
237 | struct page *page = bv->bv_page; | |
4c8ff709 | 238 | |
7f59b277 EB |
239 | /* PG_error was set if decryption failed. */ |
240 | if (f2fs_is_compressed_page(page)) | |
6ce19aff CY |
241 | f2fs_end_read_compressed_page(page, PageError(page), |
242 | blkaddr); | |
7f59b277 EB |
243 | else |
244 | all_compressed = false; | |
6ce19aff CY |
245 | |
246 | blkaddr++; | |
6dbb1796 | 247 | } |
4c8ff709 | 248 | |
7f59b277 EB |
249 | /* |
250 | * Optimization: if all the bio's pages are compressed, then scheduling | |
251 | * the per-bio verity work is unnecessary, as verity will be fully | |
252 | * handled at the compression cluster level. | |
253 | */ | |
254 | if (all_compressed) | |
255 | ctx->enabled_steps &= ~STEP_VERITY; | |
6dbb1796 EB |
256 | } |
257 | ||
7f59b277 | 258 | static void f2fs_post_read_work(struct work_struct *work) |
6dbb1796 | 259 | { |
7f59b277 EB |
260 | struct bio_post_read_ctx *ctx = |
261 | container_of(work, struct bio_post_read_ctx, work); | |
262 | ||
263 | if (ctx->enabled_steps & STEP_DECRYPT) | |
264 | fscrypt_decrypt_bio(ctx->bio); | |
265 | ||
266 | if (ctx->enabled_steps & STEP_DECOMPRESS) | |
267 | f2fs_handle_step_decompress(ctx); | |
268 | ||
269 | f2fs_verify_and_finish_bio(ctx->bio); | |
6dbb1796 EB |
270 | } |
271 | ||
272 | static void f2fs_read_end_io(struct bio *bio) | |
273 | { | |
c45d6002 | 274 | struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); |
a4b68176 DJ |
275 | struct bio_post_read_ctx *ctx; |
276 | ||
277 | iostat_update_and_unbind_ctx(bio, 0); | |
278 | ctx = bio->bi_private; | |
c45d6002 CY |
279 | |
280 | if (time_to_inject(sbi, FAULT_READ_IO)) { | |
281 | f2fs_show_injection_info(sbi, FAULT_READ_IO); | |
4e4cbee9 | 282 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 283 | } |
8b038c70 | 284 | |
7f59b277 EB |
285 | if (bio->bi_status) { |
286 | f2fs_finish_read_bio(bio); | |
6dbb1796 | 287 | return; |
f1e88660 | 288 | } |
6dbb1796 | 289 | |
7f59b277 EB |
290 | if (ctx && (ctx->enabled_steps & (STEP_DECRYPT | STEP_DECOMPRESS))) { |
291 | INIT_WORK(&ctx->work, f2fs_post_read_work); | |
292 | queue_work(ctx->sbi->post_read_wq, &ctx->work); | |
293 | } else { | |
294 | f2fs_verify_and_finish_bio(bio); | |
295 | } | |
f1e88660 JK |
296 | } |
297 | ||
4246a0b6 | 298 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 299 | { |
a4b68176 | 300 | struct f2fs_sb_info *sbi; |
f568849e | 301 | struct bio_vec *bvec; |
6dc4f100 | 302 | struct bvec_iter_all iter_all; |
93dfe2ac | 303 | |
a4b68176 DJ |
304 | iostat_update_and_unbind_ctx(bio, 1); |
305 | sbi = bio->bi_private; | |
306 | ||
6f5c2ed0 | 307 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
c45d6002 | 308 | f2fs_show_injection_info(sbi, FAULT_WRITE_IO); |
6f5c2ed0 CY |
309 | bio->bi_status = BLK_STS_IOERR; |
310 | } | |
311 | ||
2b070cfe | 312 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 313 | struct page *page = bvec->bv_page; |
36951b38 | 314 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 315 | |
b763f3be CY |
316 | if (page_private_dummy(page)) { |
317 | clear_page_private_dummy(page); | |
0a595eba JK |
318 | unlock_page(page); |
319 | mempool_free(page, sbi->write_io_dummy); | |
320 | ||
4e4cbee9 | 321 | if (unlikely(bio->bi_status)) |
0a595eba JK |
322 | f2fs_stop_checkpoint(sbi, true); |
323 | continue; | |
324 | } | |
325 | ||
d2d0727b | 326 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 327 | |
4c8ff709 CY |
328 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
329 | if (f2fs_is_compressed_page(page)) { | |
330 | f2fs_compress_write_end_io(bio, page); | |
331 | continue; | |
332 | } | |
333 | #endif | |
334 | ||
4e4cbee9 | 335 | if (unlikely(bio->bi_status)) { |
5114a97a | 336 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
337 | if (type == F2FS_WB_CP_DATA) |
338 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 339 | } |
7dff55d2 YH |
340 | |
341 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
342 | page->index != nid_of_node(page)); | |
343 | ||
36951b38 | 344 | dec_page_count(sbi, type); |
50fa53ec CY |
345 | if (f2fs_in_warm_node_list(sbi, page)) |
346 | f2fs_del_fsync_node_entry(sbi, page); | |
b763f3be | 347 | clear_page_private_gcing(page); |
93dfe2ac | 348 | end_page_writeback(page); |
f568849e | 349 | } |
36951b38 | 350 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 351 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
352 | wake_up(&sbi->cp_wait); |
353 | ||
354 | bio_put(bio); | |
355 | } | |
356 | ||
3c62be17 JK |
357 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
358 | block_t blk_addr, struct bio *bio) | |
359 | { | |
360 | struct block_device *bdev = sbi->sb->s_bdev; | |
361 | int i; | |
362 | ||
0916878d DLM |
363 | if (f2fs_is_multi_device(sbi)) { |
364 | for (i = 0; i < sbi->s_ndevs; i++) { | |
365 | if (FDEV(i).start_blk <= blk_addr && | |
366 | FDEV(i).end_blk >= blk_addr) { | |
367 | blk_addr -= FDEV(i).start_blk; | |
368 | bdev = FDEV(i).bdev; | |
369 | break; | |
370 | } | |
3c62be17 JK |
371 | } |
372 | } | |
373 | if (bio) { | |
74d46992 | 374 | bio_set_dev(bio, bdev); |
3c62be17 JK |
375 | bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |
376 | } | |
377 | return bdev; | |
378 | } | |
379 | ||
380 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
381 | { | |
382 | int i; | |
383 | ||
0916878d DLM |
384 | if (!f2fs_is_multi_device(sbi)) |
385 | return 0; | |
386 | ||
3c62be17 JK |
387 | for (i = 0; i < sbi->s_ndevs; i++) |
388 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
389 | return i; | |
390 | return 0; | |
391 | } | |
392 | ||
b757f6ed | 393 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 394 | { |
b757f6ed | 395 | struct f2fs_sb_info *sbi = fio->sbi; |
940a6d34 GZ |
396 | struct bio *bio; |
397 | ||
67883ade | 398 | bio = bio_alloc_bioset(GFP_NOIO, npages, &f2fs_bioset); |
940a6d34 | 399 | |
b757f6ed CY |
400 | f2fs_target_device(sbi, fio->new_blkaddr, bio); |
401 | if (is_read_io(fio->op)) { | |
0cdd3195 HL |
402 | bio->bi_end_io = f2fs_read_end_io; |
403 | bio->bi_private = NULL; | |
404 | } else { | |
405 | bio->bi_end_io = f2fs_write_end_io; | |
406 | bio->bi_private = sbi; | |
b757f6ed CY |
407 | bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, |
408 | fio->type, fio->temp); | |
0cdd3195 | 409 | } |
a4b68176 DJ |
410 | iostat_alloc_and_bind_ctx(sbi, bio, NULL); |
411 | ||
b757f6ed CY |
412 | if (fio->io_wbc) |
413 | wbc_init_bio(fio->io_wbc, bio); | |
940a6d34 GZ |
414 | |
415 | return bio; | |
416 | } | |
417 | ||
27aacd28 ST |
418 | static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode, |
419 | pgoff_t first_idx, | |
420 | const struct f2fs_io_info *fio, | |
421 | gfp_t gfp_mask) | |
422 | { | |
423 | /* | |
424 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
425 | * read/write raw data without encryption. | |
426 | */ | |
427 | if (!fio || !fio->encrypted_page) | |
428 | fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask); | |
429 | } | |
430 | ||
431 | static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode, | |
432 | pgoff_t next_idx, | |
433 | const struct f2fs_io_info *fio) | |
434 | { | |
435 | /* | |
436 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
437 | * read/write raw data without encryption. | |
438 | */ | |
439 | if (fio && fio->encrypted_page) | |
440 | return !bio_has_crypt_ctx(bio); | |
441 | ||
442 | return fscrypt_mergeable_bio(bio, inode, next_idx); | |
443 | } | |
444 | ||
4fc29c1a LT |
445 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
446 | struct bio *bio, enum page_type type) | |
f5730184 | 447 | { |
4fc29c1a | 448 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
449 | unsigned int start; |
450 | ||
0a595eba JK |
451 | if (type != DATA && type != NODE) |
452 | goto submit_io; | |
453 | ||
b0332a0f | 454 | if (f2fs_lfs_mode(sbi) && current->plug) |
3bb09a0e TY |
455 | blk_finish_plug(current->plug); |
456 | ||
39f71b7e | 457 | if (!F2FS_IO_ALIGNED(sbi)) |
8223ecc4 CY |
458 | goto submit_io; |
459 | ||
0a595eba JK |
460 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
461 | start %= F2FS_IO_SIZE(sbi); | |
462 | ||
463 | if (start == 0) | |
464 | goto submit_io; | |
465 | ||
466 | /* fill dummy pages */ | |
467 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
468 | struct page *page = | |
469 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 470 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
471 | f2fs_bug_on(sbi, !page); |
472 | ||
0a595eba | 473 | lock_page(page); |
b763f3be CY |
474 | |
475 | zero_user_segment(page, 0, PAGE_SIZE); | |
476 | set_page_private_dummy(page); | |
477 | ||
0a595eba JK |
478 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) |
479 | f2fs_bug_on(sbi, 1); | |
480 | } | |
481 | /* | |
482 | * In the NODE case, we lose next block address chain. So, we | |
483 | * need to do checkpoint in f2fs_sync_file. | |
484 | */ | |
485 | if (type == NODE) | |
486 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 487 | } |
0a595eba | 488 | submit_io: |
554b5125 JK |
489 | if (is_read_io(bio_op(bio))) |
490 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
491 | else | |
492 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
a4b68176 DJ |
493 | |
494 | iostat_update_submit_ctx(bio, type); | |
4e49ea4a | 495 | submit_bio(bio); |
f5730184 JK |
496 | } |
497 | ||
4c8ff709 CY |
498 | void f2fs_submit_bio(struct f2fs_sb_info *sbi, |
499 | struct bio *bio, enum page_type type) | |
500 | { | |
501 | __submit_bio(sbi, bio, type); | |
502 | } | |
503 | ||
32b6aba8 | 504 | static void __attach_io_flag(struct f2fs_io_info *fio) |
da9953b7 JK |
505 | { |
506 | struct f2fs_sb_info *sbi = fio->sbi; | |
507 | unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1; | |
32b6aba8 JK |
508 | unsigned int io_flag, fua_flag, meta_flag; |
509 | ||
510 | if (fio->type == DATA) | |
511 | io_flag = sbi->data_io_flag; | |
512 | else if (fio->type == NODE) | |
513 | io_flag = sbi->node_io_flag; | |
514 | else | |
515 | return; | |
516 | ||
517 | fua_flag = io_flag & temp_mask; | |
518 | meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask; | |
519 | ||
da9953b7 | 520 | /* |
32b6aba8 | 521 | * data/node io flag bits per temp: |
da9953b7 JK |
522 | * REQ_META | REQ_FUA | |
523 | * 5 | 4 | 3 | 2 | 1 | 0 | | |
524 | * Cold | Warm | Hot | Cold | Warm | Hot | | |
525 | */ | |
da9953b7 JK |
526 | if ((1 << fio->temp) & meta_flag) |
527 | fio->op_flags |= REQ_META; | |
528 | if ((1 << fio->temp) & fua_flag) | |
529 | fio->op_flags |= REQ_FUA; | |
530 | } | |
531 | ||
458e6197 | 532 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 533 | { |
458e6197 | 534 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
535 | |
536 | if (!io->bio) | |
537 | return; | |
538 | ||
32b6aba8 | 539 | __attach_io_flag(fio); |
554b5125 JK |
540 | bio_set_op_attrs(io->bio, fio->op, fio->op_flags); |
541 | ||
04d328de | 542 | if (is_read_io(fio->op)) |
554b5125 | 543 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 544 | else |
554b5125 | 545 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 546 | |
4fc29c1a | 547 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
548 | io->bio = NULL; |
549 | } | |
550 | ||
8648de2c | 551 | static bool __has_merged_page(struct bio *bio, struct inode *inode, |
bab475c5 | 552 | struct page *page, nid_t ino) |
0fd785eb | 553 | { |
0fd785eb | 554 | struct bio_vec *bvec; |
6dc4f100 | 555 | struct bvec_iter_all iter_all; |
0fd785eb | 556 | |
8648de2c | 557 | if (!bio) |
0fd785eb | 558 | return false; |
0c3a5797 | 559 | |
bab475c5 | 560 | if (!inode && !page && !ino) |
0c3a5797 | 561 | return true; |
0fd785eb | 562 | |
8648de2c | 563 | bio_for_each_segment_all(bvec, bio, iter_all) { |
4c8ff709 | 564 | struct page *target = bvec->bv_page; |
0fd785eb | 565 | |
4c8ff709 | 566 | if (fscrypt_is_bounce_page(target)) { |
d2d0727b | 567 | target = fscrypt_pagecache_page(target); |
4c8ff709 CY |
568 | if (IS_ERR(target)) |
569 | continue; | |
570 | } | |
571 | if (f2fs_is_compressed_page(target)) { | |
572 | target = f2fs_compress_control_page(target); | |
573 | if (IS_ERR(target)) | |
574 | continue; | |
575 | } | |
0fd785eb | 576 | |
0c3a5797 CY |
577 | if (inode && inode == target->mapping->host) |
578 | return true; | |
bab475c5 CY |
579 | if (page && page == target) |
580 | return true; | |
0c3a5797 | 581 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 582 | return true; |
0fd785eb CY |
583 | } |
584 | ||
0fd785eb CY |
585 | return false; |
586 | } | |
587 | ||
b9109b0e | 588 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 589 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
590 | { |
591 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 592 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 593 | |
df0f8dc0 | 594 | down_write(&io->io_rwsem); |
458e6197 JK |
595 | |
596 | /* change META to META_FLUSH in the checkpoint procedure */ | |
597 | if (type >= META_FLUSH) { | |
598 | io->fio.type = META_FLUSH; | |
04d328de | 599 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 600 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 601 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 602 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
603 | } |
604 | __submit_merged_bio(io); | |
df0f8dc0 | 605 | up_write(&io->io_rwsem); |
93dfe2ac JK |
606 | } |
607 | ||
a912b54d | 608 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
609 | struct inode *inode, struct page *page, |
610 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 611 | { |
a912b54d | 612 | enum temp_type temp; |
1e771e83 | 613 | bool ret = true; |
a912b54d JK |
614 | |
615 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
616 | if (!force) { |
617 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
618 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 619 | |
1e771e83 | 620 | down_read(&io->io_rwsem); |
8648de2c | 621 | ret = __has_merged_page(io->bio, inode, page, ino); |
1e771e83 YS |
622 | up_read(&io->io_rwsem); |
623 | } | |
624 | if (ret) | |
625 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
626 | |
627 | /* TODO: use HOT temp only for meta pages now. */ | |
628 | if (type >= META) | |
629 | break; | |
630 | } | |
0c3a5797 CY |
631 | } |
632 | ||
b9109b0e | 633 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 634 | { |
adcc00f7 | 635 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
636 | } |
637 | ||
b9109b0e | 638 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
639 | struct inode *inode, struct page *page, |
640 | nid_t ino, enum page_type type) | |
0c3a5797 | 641 | { |
bab475c5 | 642 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
643 | } |
644 | ||
b9109b0e | 645 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 646 | { |
b9109b0e JK |
647 | f2fs_submit_merged_write(sbi, DATA); |
648 | f2fs_submit_merged_write(sbi, NODE); | |
649 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
650 | } |
651 | ||
93dfe2ac JK |
652 | /* |
653 | * Fill the locked page with data located in the block address. | |
771a9a71 | 654 | * A caller needs to unlock the page on failure. |
93dfe2ac | 655 | */ |
05ca3632 | 656 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 657 | { |
93dfe2ac | 658 | struct bio *bio; |
0b81d077 JK |
659 | struct page *page = fio->encrypted_page ? |
660 | fio->encrypted_page : fio->page; | |
93dfe2ac | 661 | |
c9b60788 | 662 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
93770ab7 CY |
663 | fio->is_por ? META_POR : (__is_meta_io(fio) ? |
664 | META_GENERIC : DATA_GENERIC_ENHANCE))) | |
10f966bb | 665 | return -EFSCORRUPTED; |
c9b60788 | 666 | |
2ace38e0 | 667 | trace_f2fs_submit_page_bio(page, fio); |
93dfe2ac JK |
668 | |
669 | /* Allocate a new bio */ | |
b757f6ed | 670 | bio = __bio_alloc(fio, 1); |
93dfe2ac | 671 | |
27aacd28 ST |
672 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
673 | fio->page->index, fio, GFP_NOIO); | |
674 | ||
09cbfeaf | 675 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 676 | bio_put(bio); |
93dfe2ac JK |
677 | return -EFAULT; |
678 | } | |
78efac53 CY |
679 | |
680 | if (fio->io_wbc && !is_read_io(fio->op)) | |
34e51a5e | 681 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
78efac53 | 682 | |
b7b911d5 | 683 | __attach_io_flag(fio); |
04d328de | 684 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 685 | |
5f9abab4 JK |
686 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
687 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
688 | |
689 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
690 | return 0; |
691 | } | |
692 | ||
8896cbdf CY |
693 | static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, |
694 | block_t last_blkaddr, block_t cur_blkaddr) | |
695 | { | |
10208567 JK |
696 | if (unlikely(sbi->max_io_bytes && |
697 | bio->bi_iter.bi_size >= sbi->max_io_bytes)) | |
698 | return false; | |
8896cbdf CY |
699 | if (last_blkaddr + 1 != cur_blkaddr) |
700 | return false; | |
309dca30 | 701 | return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL); |
8896cbdf CY |
702 | } |
703 | ||
704 | static bool io_type_is_mergeable(struct f2fs_bio_info *io, | |
705 | struct f2fs_io_info *fio) | |
706 | { | |
707 | if (io->fio.op != fio->op) | |
708 | return false; | |
709 | return io->fio.op_flags == fio->op_flags; | |
710 | } | |
711 | ||
712 | static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, | |
713 | struct f2fs_bio_info *io, | |
714 | struct f2fs_io_info *fio, | |
715 | block_t last_blkaddr, | |
716 | block_t cur_blkaddr) | |
717 | { | |
c72db71e CY |
718 | if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { |
719 | unsigned int filled_blocks = | |
720 | F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); | |
721 | unsigned int io_size = F2FS_IO_SIZE(sbi); | |
722 | unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; | |
723 | ||
724 | /* IOs in bio is aligned and left space of vectors is not enough */ | |
725 | if (!(filled_blocks % io_size) && left_vecs < io_size) | |
726 | return false; | |
727 | } | |
8896cbdf CY |
728 | if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) |
729 | return false; | |
730 | return io_type_is_mergeable(io, fio); | |
731 | } | |
732 | ||
0b20fcec CY |
733 | static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, |
734 | struct page *page, enum temp_type temp) | |
735 | { | |
736 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
737 | struct bio_entry *be; | |
738 | ||
32410577 | 739 | be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS, true, NULL); |
0b20fcec CY |
740 | be->bio = bio; |
741 | bio_get(bio); | |
742 | ||
743 | if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE) | |
744 | f2fs_bug_on(sbi, 1); | |
745 | ||
746 | down_write(&io->bio_list_lock); | |
747 | list_add_tail(&be->list, &io->bio_list); | |
748 | up_write(&io->bio_list_lock); | |
749 | } | |
750 | ||
751 | static void del_bio_entry(struct bio_entry *be) | |
752 | { | |
753 | list_del(&be->list); | |
754 | kmem_cache_free(bio_entry_slab, be); | |
755 | } | |
756 | ||
27aacd28 | 757 | static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio, |
0b20fcec CY |
758 | struct page *page) |
759 | { | |
27aacd28 | 760 | struct f2fs_sb_info *sbi = fio->sbi; |
0b20fcec CY |
761 | enum temp_type temp; |
762 | bool found = false; | |
763 | int ret = -EAGAIN; | |
764 | ||
765 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
766 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
767 | struct list_head *head = &io->bio_list; | |
768 | struct bio_entry *be; | |
769 | ||
770 | down_write(&io->bio_list_lock); | |
771 | list_for_each_entry(be, head, list) { | |
772 | if (be->bio != *bio) | |
773 | continue; | |
774 | ||
775 | found = true; | |
776 | ||
27aacd28 ST |
777 | f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio, |
778 | *fio->last_block, | |
779 | fio->new_blkaddr)); | |
780 | if (f2fs_crypt_mergeable_bio(*bio, | |
781 | fio->page->mapping->host, | |
782 | fio->page->index, fio) && | |
783 | bio_add_page(*bio, page, PAGE_SIZE, 0) == | |
784 | PAGE_SIZE) { | |
0b20fcec CY |
785 | ret = 0; |
786 | break; | |
787 | } | |
788 | ||
27aacd28 | 789 | /* page can't be merged into bio; submit the bio */ |
0b20fcec CY |
790 | del_bio_entry(be); |
791 | __submit_bio(sbi, *bio, DATA); | |
792 | break; | |
793 | } | |
794 | up_write(&io->bio_list_lock); | |
795 | } | |
796 | ||
797 | if (ret) { | |
798 | bio_put(*bio); | |
799 | *bio = NULL; | |
800 | } | |
801 | ||
802 | return ret; | |
803 | } | |
804 | ||
805 | void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, | |
806 | struct bio **bio, struct page *page) | |
807 | { | |
808 | enum temp_type temp; | |
809 | bool found = false; | |
810 | struct bio *target = bio ? *bio : NULL; | |
811 | ||
812 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
813 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
814 | struct list_head *head = &io->bio_list; | |
815 | struct bio_entry *be; | |
816 | ||
817 | if (list_empty(head)) | |
818 | continue; | |
819 | ||
820 | down_read(&io->bio_list_lock); | |
821 | list_for_each_entry(be, head, list) { | |
822 | if (target) | |
823 | found = (target == be->bio); | |
824 | else | |
825 | found = __has_merged_page(be->bio, NULL, | |
826 | page, 0); | |
827 | if (found) | |
828 | break; | |
829 | } | |
830 | up_read(&io->bio_list_lock); | |
831 | ||
832 | if (!found) | |
833 | continue; | |
834 | ||
835 | found = false; | |
836 | ||
837 | down_write(&io->bio_list_lock); | |
838 | list_for_each_entry(be, head, list) { | |
839 | if (target) | |
840 | found = (target == be->bio); | |
841 | else | |
842 | found = __has_merged_page(be->bio, NULL, | |
843 | page, 0); | |
844 | if (found) { | |
845 | target = be->bio; | |
846 | del_bio_entry(be); | |
847 | break; | |
848 | } | |
849 | } | |
850 | up_write(&io->bio_list_lock); | |
851 | } | |
852 | ||
853 | if (found) | |
854 | __submit_bio(sbi, target, DATA); | |
855 | if (bio && *bio) { | |
856 | bio_put(*bio); | |
857 | *bio = NULL; | |
858 | } | |
859 | } | |
860 | ||
8648de2c CY |
861 | int f2fs_merge_page_bio(struct f2fs_io_info *fio) |
862 | { | |
863 | struct bio *bio = *fio->bio; | |
864 | struct page *page = fio->encrypted_page ? | |
865 | fio->encrypted_page : fio->page; | |
866 | ||
867 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, | |
868 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
10f966bb | 869 | return -EFSCORRUPTED; |
8648de2c CY |
870 | |
871 | trace_f2fs_submit_page_bio(page, fio); | |
8648de2c | 872 | |
8896cbdf | 873 | if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, |
0b20fcec CY |
874 | fio->new_blkaddr)) |
875 | f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL); | |
8648de2c CY |
876 | alloc_new: |
877 | if (!bio) { | |
a8affc03 | 878 | bio = __bio_alloc(fio, BIO_MAX_VECS); |
b7b911d5 | 879 | __attach_io_flag(fio); |
27aacd28 ST |
880 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
881 | fio->page->index, fio, GFP_NOIO); | |
8648de2c | 882 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
8648de2c | 883 | |
0b20fcec CY |
884 | add_bio_entry(fio->sbi, bio, page, fio->temp); |
885 | } else { | |
27aacd28 | 886 | if (add_ipu_page(fio, &bio, page)) |
0b20fcec | 887 | goto alloc_new; |
8648de2c CY |
888 | } |
889 | ||
890 | if (fio->io_wbc) | |
9637d517 | 891 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
8648de2c CY |
892 | |
893 | inc_page_count(fio->sbi, WB_DATA_TYPE(page)); | |
894 | ||
895 | *fio->last_block = fio->new_blkaddr; | |
896 | *fio->bio = bio; | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
fe16efe6 | 901 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 902 | { |
05ca3632 | 903 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 904 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 905 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 906 | struct page *bio_page; |
93dfe2ac | 907 | |
b9109b0e | 908 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 909 | |
fb830fc5 CY |
910 | down_write(&io->io_rwsem); |
911 | next: | |
912 | if (fio->in_list) { | |
913 | spin_lock(&io->io_lock); | |
914 | if (list_empty(&io->io_list)) { | |
915 | spin_unlock(&io->io_lock); | |
fe16efe6 | 916 | goto out; |
fb830fc5 CY |
917 | } |
918 | fio = list_first_entry(&io->io_list, | |
919 | struct f2fs_io_info, list); | |
920 | list_del(&fio->list); | |
921 | spin_unlock(&io->io_lock); | |
922 | } | |
93dfe2ac | 923 | |
93770ab7 | 924 | verify_fio_blkaddr(fio); |
93dfe2ac | 925 | |
4c8ff709 CY |
926 | if (fio->encrypted_page) |
927 | bio_page = fio->encrypted_page; | |
928 | else if (fio->compressed_page) | |
929 | bio_page = fio->compressed_page; | |
930 | else | |
931 | bio_page = fio->page; | |
36951b38 | 932 | |
ebf7c522 TM |
933 | /* set submitted = true as a return value */ |
934 | fio->submitted = true; | |
d68f735b | 935 | |
b9109b0e | 936 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 937 | |
27aacd28 ST |
938 | if (io->bio && |
939 | (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio, | |
940 | fio->new_blkaddr) || | |
941 | !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host, | |
942 | bio_page->index, fio))) | |
458e6197 | 943 | __submit_merged_bio(io); |
93dfe2ac JK |
944 | alloc_new: |
945 | if (io->bio == NULL) { | |
8223ecc4 CY |
946 | if (F2FS_IO_ALIGNED(sbi) && |
947 | (fio->type == DATA || fio->type == NODE) && | |
0a595eba | 948 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { |
b9109b0e | 949 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
950 | fio->retry = true; |
951 | goto skip; | |
0a595eba | 952 | } |
a8affc03 | 953 | io->bio = __bio_alloc(fio, BIO_MAX_VECS); |
27aacd28 ST |
954 | f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host, |
955 | bio_page->index, fio, GFP_NOIO); | |
458e6197 | 956 | io->fio = *fio; |
93dfe2ac JK |
957 | } |
958 | ||
a912b54d | 959 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 960 | __submit_merged_bio(io); |
93dfe2ac JK |
961 | goto alloc_new; |
962 | } | |
963 | ||
578c6478 | 964 | if (fio->io_wbc) |
34e51a5e | 965 | wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); |
578c6478 | 966 | |
7a9d7548 | 967 | io->last_block_in_bio = fio->new_blkaddr; |
fb830fc5 CY |
968 | |
969 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 970 | skip: |
fb830fc5 CY |
971 | if (fio->in_list) |
972 | goto next; | |
fe16efe6 | 973 | out: |
4354994f | 974 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
00e09c0b | 975 | !f2fs_is_checkpoint_ready(sbi)) |
5ce80586 | 976 | __submit_merged_bio(io); |
df0f8dc0 | 977 | up_write(&io->io_rwsem); |
93dfe2ac JK |
978 | } |
979 | ||
13ba41e3 | 980 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
95ae251f | 981 | unsigned nr_pages, unsigned op_flag, |
7f59b277 | 982 | pgoff_t first_idx, bool for_write) |
13ba41e3 JK |
983 | { |
984 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 985 | struct bio *bio; |
a4b68176 | 986 | struct bio_post_read_ctx *ctx = NULL; |
6dbb1796 | 987 | unsigned int post_read_steps = 0; |
13ba41e3 | 988 | |
67883ade | 989 | bio = bio_alloc_bioset(for_write ? GFP_NOIO : GFP_KERNEL, |
5f7136db | 990 | bio_max_segs(nr_pages), &f2fs_bioset); |
6dbb1796 | 991 | if (!bio) |
13ba41e3 | 992 | return ERR_PTR(-ENOMEM); |
27aacd28 ST |
993 | |
994 | f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); | |
995 | ||
13ba41e3 JK |
996 | f2fs_target_device(sbi, blkaddr, bio); |
997 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 998 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 999 | |
27aacd28 | 1000 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
7f59b277 | 1001 | post_read_steps |= STEP_DECRYPT; |
95ae251f | 1002 | |
7f59b277 EB |
1003 | if (f2fs_need_verity(inode, first_idx)) |
1004 | post_read_steps |= STEP_VERITY; | |
1005 | ||
1006 | /* | |
1007 | * STEP_DECOMPRESS is handled specially, since a compressed file might | |
1008 | * contain both compressed and uncompressed clusters. We'll allocate a | |
1009 | * bio_post_read_ctx if the file is compressed, but the caller is | |
1010 | * responsible for enabling STEP_DECOMPRESS if it's actually needed. | |
1011 | */ | |
1012 | ||
1013 | if (post_read_steps || f2fs_compressed_file(inode)) { | |
e8ce5749 | 1014 | /* Due to the mempool, this never fails. */ |
6dbb1796 | 1015 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); |
6dbb1796 | 1016 | ctx->bio = bio; |
4c8ff709 | 1017 | ctx->sbi = sbi; |
6dbb1796 | 1018 | ctx->enabled_steps = post_read_steps; |
4931e0c9 | 1019 | ctx->fs_blkaddr = blkaddr; |
6dbb1796 | 1020 | bio->bi_private = ctx; |
6dbb1796 | 1021 | } |
a4b68176 | 1022 | iostat_alloc_and_bind_ctx(sbi, bio, ctx); |
6dbb1796 | 1023 | |
13ba41e3 JK |
1024 | return bio; |
1025 | } | |
1026 | ||
1027 | /* This can handle encryption stuffs */ | |
1028 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
b7973091 | 1029 | block_t blkaddr, int op_flags, bool for_write) |
13ba41e3 | 1030 | { |
93770ab7 CY |
1031 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1032 | struct bio *bio; | |
13ba41e3 | 1033 | |
b7973091 | 1034 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags, |
7f59b277 | 1035 | page->index, for_write); |
13ba41e3 JK |
1036 | if (IS_ERR(bio)) |
1037 | return PTR_ERR(bio); | |
1038 | ||
0ded69f6 JK |
1039 | /* wait for GCed page writeback via META_MAPPING */ |
1040 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
1041 | ||
13ba41e3 JK |
1042 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
1043 | bio_put(bio); | |
1044 | return -EFAULT; | |
1045 | } | |
fb7d70db | 1046 | ClearPageError(page); |
93770ab7 | 1047 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 1048 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
93770ab7 | 1049 | __submit_bio(sbi, bio, DATA); |
13ba41e3 JK |
1050 | return 0; |
1051 | } | |
1052 | ||
46008c6d CY |
1053 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
1054 | { | |
1055 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
1056 | __le32 *addr_array; | |
7a2af766 CY |
1057 | int base = 0; |
1058 | ||
1059 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
1060 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
1061 | |
1062 | /* Get physical address of data block */ | |
1063 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 1064 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
1065 | } |
1066 | ||
0a8165d7 | 1067 | /* |
eb47b800 JK |
1068 | * Lock ordering for the change of data block address: |
1069 | * ->data_page | |
1070 | * ->node_page | |
1071 | * update block addresses in the node page | |
1072 | */ | |
4d57b86d | 1073 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 1074 | { |
bae0ee7a | 1075 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1076 | __set_data_blkaddr(dn); |
1077 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 1078 | dn->node_changed = true; |
eb47b800 JK |
1079 | } |
1080 | ||
f28b3434 CY |
1081 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
1082 | { | |
1083 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 1084 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
1085 | f2fs_update_extent_cache(dn); |
1086 | } | |
1087 | ||
46008c6d | 1088 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 1089 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 1090 | { |
4081363f | 1091 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 1092 | int err; |
eb47b800 | 1093 | |
46008c6d CY |
1094 | if (!count) |
1095 | return 0; | |
1096 | ||
91942321 | 1097 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 1098 | return -EPERM; |
0abd675e CY |
1099 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1100 | return err; | |
eb47b800 | 1101 | |
46008c6d CY |
1102 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
1103 | dn->ofs_in_node, count); | |
1104 | ||
bae0ee7a | 1105 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1106 | |
1107 | for (; count > 0; dn->ofs_in_node++) { | |
a2ced1ce | 1108 | block_t blkaddr = f2fs_data_blkaddr(dn); |
5f029c04 | 1109 | |
46008c6d CY |
1110 | if (blkaddr == NULL_ADDR) { |
1111 | dn->data_blkaddr = NEW_ADDR; | |
1112 | __set_data_blkaddr(dn); | |
1113 | count--; | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | if (set_page_dirty(dn->node_page)) | |
1118 | dn->node_changed = true; | |
eb47b800 JK |
1119 | return 0; |
1120 | } | |
1121 | ||
46008c6d | 1122 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 1123 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
1124 | { |
1125 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1126 | int ret; | |
1127 | ||
4d57b86d | 1128 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
1129 | dn->ofs_in_node = ofs_in_node; |
1130 | return ret; | |
1131 | } | |
1132 | ||
b600965c HL |
1133 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
1134 | { | |
1135 | bool need_put = dn->inode_page ? false : true; | |
1136 | int err; | |
1137 | ||
4d57b86d | 1138 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
1139 | if (err) |
1140 | return err; | |
a8865372 | 1141 | |
b600965c | 1142 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 1143 | err = f2fs_reserve_new_block(dn); |
a8865372 | 1144 | if (err || need_put) |
b600965c HL |
1145 | f2fs_put_dnode(dn); |
1146 | return err; | |
1147 | } | |
1148 | ||
759af1c9 | 1149 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 1150 | { |
94afd6d6 | 1151 | struct extent_info ei = {0, }; |
759af1c9 | 1152 | struct inode *inode = dn->inode; |
028a41e8 | 1153 | |
759af1c9 FL |
1154 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1155 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
1156 | return 0; | |
429511cd | 1157 | } |
028a41e8 | 1158 | |
759af1c9 | 1159 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
1160 | } |
1161 | ||
4d57b86d | 1162 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 1163 | int op_flags, bool for_write) |
eb47b800 | 1164 | { |
eb47b800 JK |
1165 | struct address_space *mapping = inode->i_mapping; |
1166 | struct dnode_of_data dn; | |
1167 | struct page *page; | |
94afd6d6 | 1168 | struct extent_info ei = {0, }; |
eb47b800 | 1169 | int err; |
4375a336 | 1170 | |
a56c7c6f | 1171 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
1172 | if (!page) |
1173 | return ERR_PTR(-ENOMEM); | |
1174 | ||
cb3bc9ee CY |
1175 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1176 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
93770ab7 CY |
1177 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
1178 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 1179 | err = -EFSCORRUPTED; |
93770ab7 CY |
1180 | goto put_err; |
1181 | } | |
cb3bc9ee CY |
1182 | goto got_it; |
1183 | } | |
1184 | ||
eb47b800 | 1185 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1186 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
1187 | if (err) |
1188 | goto put_err; | |
eb47b800 JK |
1189 | f2fs_put_dnode(&dn); |
1190 | ||
6bacf52f | 1191 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
1192 | err = -ENOENT; |
1193 | goto put_err; | |
650495de | 1194 | } |
93770ab7 CY |
1195 | if (dn.data_blkaddr != NEW_ADDR && |
1196 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
1197 | dn.data_blkaddr, | |
1198 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 1199 | err = -EFSCORRUPTED; |
93770ab7 CY |
1200 | goto put_err; |
1201 | } | |
cb3bc9ee | 1202 | got_it: |
43f3eae1 JK |
1203 | if (PageUptodate(page)) { |
1204 | unlock_page(page); | |
eb47b800 | 1205 | return page; |
43f3eae1 | 1206 | } |
eb47b800 | 1207 | |
d59ff4df JK |
1208 | /* |
1209 | * A new dentry page is allocated but not able to be written, since its | |
1210 | * new inode page couldn't be allocated due to -ENOSPC. | |
1211 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
1212 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
1213 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
1214 | */ |
1215 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1216 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1217 | if (!PageUptodate(page)) |
1218 | SetPageUptodate(page); | |
43f3eae1 | 1219 | unlock_page(page); |
d59ff4df JK |
1220 | return page; |
1221 | } | |
eb47b800 | 1222 | |
b7973091 JY |
1223 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr, |
1224 | op_flags, for_write); | |
393ff91f | 1225 | if (err) |
86531d6b | 1226 | goto put_err; |
43f3eae1 | 1227 | return page; |
86531d6b JK |
1228 | |
1229 | put_err: | |
1230 | f2fs_put_page(page, 1); | |
1231 | return ERR_PTR(err); | |
43f3eae1 JK |
1232 | } |
1233 | ||
4d57b86d | 1234 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
1235 | { |
1236 | struct address_space *mapping = inode->i_mapping; | |
1237 | struct page *page; | |
1238 | ||
1239 | page = find_get_page(mapping, index); | |
1240 | if (page && PageUptodate(page)) | |
1241 | return page; | |
1242 | f2fs_put_page(page, 0); | |
1243 | ||
4d57b86d | 1244 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
1245 | if (IS_ERR(page)) |
1246 | return page; | |
1247 | ||
1248 | if (PageUptodate(page)) | |
1249 | return page; | |
1250 | ||
1251 | wait_on_page_locked(page); | |
1252 | if (unlikely(!PageUptodate(page))) { | |
1253 | f2fs_put_page(page, 0); | |
1254 | return ERR_PTR(-EIO); | |
1255 | } | |
1256 | return page; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * If it tries to access a hole, return an error. | |
1261 | * Because, the callers, functions in dir.c and GC, should be able to know | |
1262 | * whether this page exists or not. | |
1263 | */ | |
4d57b86d | 1264 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 1265 | bool for_write) |
43f3eae1 JK |
1266 | { |
1267 | struct address_space *mapping = inode->i_mapping; | |
1268 | struct page *page; | |
1269 | repeat: | |
4d57b86d | 1270 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
1271 | if (IS_ERR(page)) |
1272 | return page; | |
393ff91f | 1273 | |
43f3eae1 | 1274 | /* wait for read completion */ |
393ff91f | 1275 | lock_page(page); |
6bacf52f | 1276 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
1277 | f2fs_put_page(page, 1); |
1278 | goto repeat; | |
eb47b800 | 1279 | } |
1563ac75 CY |
1280 | if (unlikely(!PageUptodate(page))) { |
1281 | f2fs_put_page(page, 1); | |
1282 | return ERR_PTR(-EIO); | |
1283 | } | |
eb47b800 JK |
1284 | return page; |
1285 | } | |
1286 | ||
0a8165d7 | 1287 | /* |
eb47b800 JK |
1288 | * Caller ensures that this data page is never allocated. |
1289 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 1290 | * |
4f4124d0 CY |
1291 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
1292 | * f2fs_unlock_op(). | |
470f00e9 CY |
1293 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
1294 | * ipage should be released by this function. | |
eb47b800 | 1295 | */ |
4d57b86d | 1296 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 1297 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 1298 | { |
eb47b800 JK |
1299 | struct address_space *mapping = inode->i_mapping; |
1300 | struct page *page; | |
1301 | struct dnode_of_data dn; | |
1302 | int err; | |
7612118a | 1303 | |
a56c7c6f | 1304 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
1305 | if (!page) { |
1306 | /* | |
1307 | * before exiting, we should make sure ipage will be released | |
1308 | * if any error occur. | |
1309 | */ | |
1310 | f2fs_put_page(ipage, 1); | |
01f28610 | 1311 | return ERR_PTR(-ENOMEM); |
470f00e9 | 1312 | } |
eb47b800 | 1313 | |
a8865372 | 1314 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 1315 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
1316 | if (err) { |
1317 | f2fs_put_page(page, 1); | |
eb47b800 | 1318 | return ERR_PTR(err); |
a8865372 | 1319 | } |
01f28610 JK |
1320 | if (!ipage) |
1321 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1322 | |
1323 | if (PageUptodate(page)) | |
01f28610 | 1324 | goto got_it; |
eb47b800 JK |
1325 | |
1326 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1327 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1328 | if (!PageUptodate(page)) |
1329 | SetPageUptodate(page); | |
eb47b800 | 1330 | } else { |
4375a336 | 1331 | f2fs_put_page(page, 1); |
a8865372 | 1332 | |
7612118a JK |
1333 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1334 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1335 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1336 | if (IS_ERR(page)) |
7612118a | 1337 | return page; |
eb47b800 | 1338 | } |
01f28610 | 1339 | got_it: |
9edcdabf | 1340 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1341 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1342 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1343 | return page; |
1344 | } | |
1345 | ||
d5097be5 | 1346 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1347 | { |
4081363f | 1348 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1349 | struct f2fs_summary sum; |
bfad7c2d | 1350 | struct node_info ni; |
6aa58d8a | 1351 | block_t old_blkaddr; |
46008c6d | 1352 | blkcnt_t count = 1; |
0abd675e | 1353 | int err; |
bfad7c2d | 1354 | |
91942321 | 1355 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1356 | return -EPERM; |
df6136ef | 1357 | |
7735730d CY |
1358 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
1359 | if (err) | |
1360 | return err; | |
1361 | ||
a2ced1ce | 1362 | dn->data_blkaddr = f2fs_data_blkaddr(dn); |
f847c699 | 1363 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1364 | goto alloc; |
1365 | ||
0abd675e CY |
1366 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1367 | return err; | |
bfad7c2d | 1368 | |
df6136ef | 1369 | alloc: |
bfad7c2d | 1370 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1371 | old_blkaddr = dn->data_blkaddr; |
1372 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
093749e2 | 1373 | &sum, seg_type, NULL); |
6ce19aff | 1374 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
6aa58d8a CY |
1375 | invalidate_mapping_pages(META_MAPPING(sbi), |
1376 | old_blkaddr, old_blkaddr); | |
6ce19aff CY |
1377 | f2fs_invalidate_compress_page(sbi, old_blkaddr); |
1378 | } | |
86f35dc3 | 1379 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d JK |
1380 | return 0; |
1381 | } | |
1382 | ||
0ef81833 | 1383 | void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1384 | { |
1385 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1386 | if (lock) | |
1387 | down_read(&sbi->node_change); | |
1388 | else | |
1389 | up_read(&sbi->node_change); | |
1390 | } else { | |
1391 | if (lock) | |
1392 | f2fs_lock_op(sbi); | |
1393 | else | |
1394 | f2fs_unlock_op(sbi); | |
1395 | } | |
1396 | } | |
1397 | ||
0a8165d7 | 1398 | /* |
7a88ddb5 CY |
1399 | * f2fs_map_blocks() tries to find or build mapping relationship which |
1400 | * maps continuous logical blocks to physical blocks, and return such | |
1401 | * info via f2fs_map_blocks structure. | |
eb47b800 | 1402 | */ |
d323d005 | 1403 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1404 | int create, int flag) |
eb47b800 | 1405 | { |
003a3e1d | 1406 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1407 | struct dnode_of_data dn; |
f9811703 | 1408 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1409 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1410 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1411 | int err = 0, ofs = 1; |
46008c6d CY |
1412 | unsigned int ofs_in_node, last_ofs_in_node; |
1413 | blkcnt_t prealloc; | |
94afd6d6 | 1414 | struct extent_info ei = {0, }; |
7df3a431 | 1415 | block_t blkaddr; |
c4020b2d | 1416 | unsigned int start_pgofs; |
71f2c820 | 1417 | int bidx = 0; |
eb47b800 | 1418 | |
dfd02e4d CY |
1419 | if (!maxblocks) |
1420 | return 0; | |
1421 | ||
71f2c820 CY |
1422 | map->m_bdev = inode->i_sb->s_bdev; |
1423 | map->m_multidev_dio = | |
1424 | f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag); | |
1425 | ||
003a3e1d JK |
1426 | map->m_len = 0; |
1427 | map->m_flags = 0; | |
1428 | ||
1429 | /* it only supports block size == page size */ | |
1430 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1431 | end = pgofs + maxblocks; |
eb47b800 | 1432 | |
24b84912 | 1433 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
b0332a0f | 1434 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f4f0b677 JZ |
1435 | map->m_may_create) |
1436 | goto next_dnode; | |
1437 | ||
003a3e1d JK |
1438 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1439 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1440 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1441 | if (map->m_next_extent) |
1442 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1443 | |
1444 | /* for hardware encryption, but to avoid potential issue in future */ | |
1445 | if (flag == F2FS_GET_BLOCK_DIO) | |
1446 | f2fs_wait_on_block_writeback_range(inode, | |
1447 | map->m_pblk, map->m_len); | |
71f2c820 CY |
1448 | |
1449 | if (map->m_multidev_dio) { | |
1450 | block_t blk_addr = map->m_pblk; | |
1451 | ||
1452 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1453 | ||
1454 | map->m_bdev = FDEV(bidx).bdev; | |
1455 | map->m_pblk -= FDEV(bidx).start_blk; | |
1456 | map->m_len = min(map->m_len, | |
1457 | FDEV(bidx).end_blk + 1 - map->m_pblk); | |
1458 | ||
1459 | if (map->m_may_create) | |
1460 | f2fs_update_device_state(sbi, inode->i_ino, | |
1461 | blk_addr, map->m_len); | |
1462 | } | |
bfad7c2d | 1463 | goto out; |
a2e7d1bf | 1464 | } |
bfad7c2d | 1465 | |
4fe71e88 | 1466 | next_dnode: |
f9d6d059 | 1467 | if (map->m_may_create) |
0ef81833 | 1468 | f2fs_do_map_lock(sbi, flag, true); |
eb47b800 JK |
1469 | |
1470 | /* When reading holes, we need its node page */ | |
1471 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1472 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1473 | if (err) { |
43473f96 CY |
1474 | if (flag == F2FS_GET_BLOCK_BMAP) |
1475 | map->m_pblk = 0; | |
adf9ea89 | 1476 | |
da85985c | 1477 | if (err == -ENOENT) { |
adf9ea89 CY |
1478 | /* |
1479 | * There is one exceptional case that read_node_page() | |
1480 | * may return -ENOENT due to filesystem has been | |
1481 | * shutdown or cp_error, so force to convert error | |
1482 | * number to EIO for such case. | |
1483 | */ | |
1484 | if (map->m_may_create && | |
1485 | (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || | |
1486 | f2fs_cp_error(sbi))) { | |
1487 | err = -EIO; | |
1488 | goto unlock_out; | |
1489 | } | |
1490 | ||
bfad7c2d | 1491 | err = 0; |
da85985c CY |
1492 | if (map->m_next_pgofs) |
1493 | *map->m_next_pgofs = | |
4d57b86d | 1494 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1495 | if (map->m_next_extent) |
1496 | *map->m_next_extent = | |
4d57b86d | 1497 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1498 | } |
bfad7c2d | 1499 | goto unlock_out; |
848753aa | 1500 | } |
973163fc | 1501 | |
c4020b2d | 1502 | start_pgofs = pgofs; |
46008c6d | 1503 | prealloc = 0; |
230436b3 | 1504 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1505 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1506 | |
1507 | next_block: | |
a2ced1ce | 1508 | blkaddr = f2fs_data_blkaddr(&dn); |
4fe71e88 | 1509 | |
c9b60788 | 1510 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1511 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1512 | err = -EFSCORRUPTED; |
c9b60788 CY |
1513 | goto sync_out; |
1514 | } | |
1515 | ||
93770ab7 | 1516 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1517 | /* use out-place-update for driect IO under LFS mode */ |
b0332a0f | 1518 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f9d6d059 | 1519 | map->m_may_create) { |
f847c699 | 1520 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1521 | if (err) |
1522 | goto sync_out; | |
1523 | blkaddr = dn.data_blkaddr; | |
1524 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1525 | } |
1526 | } else { | |
973163fc | 1527 | if (create) { |
f9811703 CY |
1528 | if (unlikely(f2fs_cp_error(sbi))) { |
1529 | err = -EIO; | |
4fe71e88 | 1530 | goto sync_out; |
f9811703 | 1531 | } |
24b84912 | 1532 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1533 | if (blkaddr == NULL_ADDR) { |
1534 | prealloc++; | |
1535 | last_ofs_in_node = dn.ofs_in_node; | |
1536 | } | |
24b84912 | 1537 | } else { |
0a4daae5 JK |
1538 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1539 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1540 | err = __allocate_data_block(&dn, |
1541 | map->m_seg_type); | |
d4dd19ec JK |
1542 | if (!err) { |
1543 | if (flag == F2FS_GET_BLOCK_PRE_DIO) | |
1544 | file_need_truncate(inode); | |
91942321 | 1545 | set_inode_flag(inode, FI_APPEND_WRITE); |
d4dd19ec | 1546 | } |
24b84912 | 1547 | } |
973163fc | 1548 | if (err) |
4fe71e88 | 1549 | goto sync_out; |
3f2be043 | 1550 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1551 | blkaddr = dn.data_blkaddr; |
973163fc | 1552 | } else { |
bbe1da7e CY |
1553 | if (f2fs_compressed_file(inode) && |
1554 | f2fs_sanity_check_cluster(&dn) && | |
1555 | (flag != F2FS_GET_BLOCK_FIEMAP || | |
1556 | IS_ENABLED(CONFIG_F2FS_CHECK_FS))) { | |
1557 | err = -EFSCORRUPTED; | |
1558 | goto sync_out; | |
1559 | } | |
43473f96 CY |
1560 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1561 | map->m_pblk = 0; | |
1562 | goto sync_out; | |
1563 | } | |
c4020b2d CY |
1564 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1565 | goto sync_out; | |
da85985c CY |
1566 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1567 | blkaddr == NULL_ADDR) { | |
1568 | if (map->m_next_pgofs) | |
1569 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1570 | goto sync_out; |
da85985c | 1571 | } |
f3d98e74 CY |
1572 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1573 | /* for defragment case */ | |
1574 | if (map->m_next_pgofs) | |
1575 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1576 | goto sync_out; |
f3d98e74 | 1577 | } |
e2b4e2bc | 1578 | } |
e2b4e2bc | 1579 | } |
eb47b800 | 1580 | |
46008c6d CY |
1581 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1582 | goto skip; | |
1583 | ||
71f2c820 CY |
1584 | if (map->m_multidev_dio) |
1585 | bidx = f2fs_target_device_index(sbi, blkaddr); | |
1586 | ||
4fe71e88 CY |
1587 | if (map->m_len == 0) { |
1588 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1589 | if (blkaddr == NEW_ADDR) | |
1590 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1591 | map->m_flags |= F2FS_MAP_MAPPED; | |
1592 | ||
1593 | map->m_pblk = blkaddr; | |
1594 | map->m_len = 1; | |
71f2c820 CY |
1595 | |
1596 | if (map->m_multidev_dio) | |
1597 | map->m_bdev = FDEV(bidx).bdev; | |
4fe71e88 CY |
1598 | } else if ((map->m_pblk != NEW_ADDR && |
1599 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1600 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1601 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
71f2c820 CY |
1602 | if (map->m_multidev_dio && map->m_bdev != FDEV(bidx).bdev) |
1603 | goto sync_out; | |
4fe71e88 CY |
1604 | ofs++; |
1605 | map->m_len++; | |
1606 | } else { | |
1607 | goto sync_out; | |
1608 | } | |
bfad7c2d | 1609 | |
46008c6d | 1610 | skip: |
bfad7c2d JK |
1611 | dn.ofs_in_node++; |
1612 | pgofs++; | |
1613 | ||
46008c6d CY |
1614 | /* preallocate blocks in batch for one dnode page */ |
1615 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1616 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1617 | |
46008c6d | 1618 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1619 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1620 | if (err) |
1621 | goto sync_out; | |
bfad7c2d | 1622 | |
46008c6d CY |
1623 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1624 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1625 | err = -ENOSPC; | |
1626 | goto sync_out; | |
3104af35 | 1627 | } |
46008c6d CY |
1628 | dn.ofs_in_node = end_offset; |
1629 | } | |
1630 | ||
1631 | if (pgofs >= end) | |
1632 | goto sync_out; | |
1633 | else if (dn.ofs_in_node < end_offset) | |
1634 | goto next_block; | |
1635 | ||
c4020b2d CY |
1636 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1637 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1638 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1639 | ||
1640 | f2fs_update_extent_cache_range(&dn, | |
1641 | start_pgofs, map->m_pblk + ofs, | |
1642 | map->m_len - ofs); | |
1643 | } | |
1644 | } | |
1645 | ||
46008c6d CY |
1646 | f2fs_put_dnode(&dn); |
1647 | ||
f9d6d059 | 1648 | if (map->m_may_create) { |
0ef81833 | 1649 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1650 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1651 | } |
46008c6d | 1652 | goto next_dnode; |
7df3a431 | 1653 | |
bfad7c2d | 1654 | sync_out: |
1e78e8bd | 1655 | |
71f2c820 CY |
1656 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) { |
1657 | /* | |
1658 | * for hardware encryption, but to avoid potential issue | |
1659 | * in future | |
1660 | */ | |
1e78e8bd ST |
1661 | f2fs_wait_on_block_writeback_range(inode, |
1662 | map->m_pblk, map->m_len); | |
e3b49ea3 HJK |
1663 | invalidate_mapping_pages(META_MAPPING(sbi), |
1664 | map->m_pblk, map->m_pblk); | |
1e78e8bd | 1665 | |
71f2c820 CY |
1666 | if (map->m_multidev_dio) { |
1667 | block_t blk_addr = map->m_pblk; | |
1668 | ||
1669 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1670 | ||
1671 | map->m_bdev = FDEV(bidx).bdev; | |
1672 | map->m_pblk -= FDEV(bidx).start_blk; | |
1673 | ||
1674 | if (map->m_may_create) | |
1675 | f2fs_update_device_state(sbi, inode->i_ino, | |
1676 | blk_addr, map->m_len); | |
1677 | ||
1678 | f2fs_bug_on(sbi, blk_addr + map->m_len > | |
1679 | FDEV(bidx).end_blk + 1); | |
1680 | } | |
1681 | } | |
1682 | ||
c4020b2d CY |
1683 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1684 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1685 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1686 | ||
1687 | f2fs_update_extent_cache_range(&dn, | |
1688 | start_pgofs, map->m_pblk + ofs, | |
1689 | map->m_len - ofs); | |
1690 | } | |
1691 | if (map->m_next_extent) | |
1692 | *map->m_next_extent = pgofs + 1; | |
1693 | } | |
eb47b800 | 1694 | f2fs_put_dnode(&dn); |
bfad7c2d | 1695 | unlock_out: |
f9d6d059 | 1696 | if (map->m_may_create) { |
0ef81833 | 1697 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1698 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1699 | } |
bfad7c2d | 1700 | out: |
71f2c820 | 1701 | trace_f2fs_map_blocks(inode, map, create, flag, err); |
bfad7c2d | 1702 | return err; |
eb47b800 JK |
1703 | } |
1704 | ||
b91050a8 HL |
1705 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1706 | { | |
1707 | struct f2fs_map_blocks map; | |
1708 | block_t last_lblk; | |
1709 | int err; | |
1710 | ||
1711 | if (pos + len > i_size_read(inode)) | |
1712 | return false; | |
1713 | ||
1714 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1715 | map.m_next_pgofs = NULL; | |
1716 | map.m_next_extent = NULL; | |
1717 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1718 | map.m_may_create = false; |
b91050a8 HL |
1719 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1720 | ||
1721 | while (map.m_lblk < last_lblk) { | |
1722 | map.m_len = last_lblk - map.m_lblk; | |
1723 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1724 | if (err || map.m_len == 0) | |
1725 | return false; | |
1726 | map.m_lblk += map.m_len; | |
1727 | } | |
1728 | return true; | |
1729 | } | |
1730 | ||
43b9d4b4 JK |
1731 | static inline u64 bytes_to_blks(struct inode *inode, u64 bytes) |
1732 | { | |
1733 | return (bytes >> inode->i_blkbits); | |
1734 | } | |
1735 | ||
1736 | static inline u64 blks_to_bytes(struct inode *inode, u64 blks) | |
1737 | { | |
1738 | return (blks << inode->i_blkbits); | |
1739 | } | |
1740 | ||
442a9dbd CY |
1741 | static int f2fs_xattr_fiemap(struct inode *inode, |
1742 | struct fiemap_extent_info *fieinfo) | |
1743 | { | |
1744 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1745 | struct page *page; | |
1746 | struct node_info ni; | |
1747 | __u64 phys = 0, len; | |
1748 | __u32 flags; | |
1749 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1750 | int err = 0; | |
1751 | ||
1752 | if (f2fs_has_inline_xattr(inode)) { | |
1753 | int offset; | |
1754 | ||
1755 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1756 | inode->i_ino, false); | |
1757 | if (!page) | |
1758 | return -ENOMEM; | |
1759 | ||
7735730d CY |
1760 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1761 | if (err) { | |
1762 | f2fs_put_page(page, 1); | |
1763 | return err; | |
1764 | } | |
442a9dbd | 1765 | |
6cbfcab5 | 1766 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1767 | offset = offsetof(struct f2fs_inode, i_addr) + |
1768 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1769 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1770 | |
1771 | phys += offset; | |
1772 | len = inline_xattr_size(inode); | |
1773 | ||
1774 | f2fs_put_page(page, 1); | |
1775 | ||
1776 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1777 | ||
1778 | if (!xnid) | |
1779 | flags |= FIEMAP_EXTENT_LAST; | |
1780 | ||
1781 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
dd5a09bd | 1782 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
442a9dbd CY |
1783 | if (err || err == 1) |
1784 | return err; | |
1785 | } | |
1786 | ||
1787 | if (xnid) { | |
1788 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1789 | if (!page) | |
1790 | return -ENOMEM; | |
1791 | ||
7735730d CY |
1792 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1793 | if (err) { | |
1794 | f2fs_put_page(page, 1); | |
1795 | return err; | |
1796 | } | |
442a9dbd | 1797 | |
6cbfcab5 | 1798 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1799 | len = inode->i_sb->s_blocksize; |
1800 | ||
1801 | f2fs_put_page(page, 1); | |
1802 | ||
1803 | flags = FIEMAP_EXTENT_LAST; | |
1804 | } | |
1805 | ||
dd5a09bd | 1806 | if (phys) { |
442a9dbd | 1807 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); |
dd5a09bd CY |
1808 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
1809 | } | |
442a9dbd CY |
1810 | |
1811 | return (err < 0 ? err : 0); | |
1812 | } | |
1813 | ||
bf38fbad CY |
1814 | static loff_t max_inode_blocks(struct inode *inode) |
1815 | { | |
1816 | loff_t result = ADDRS_PER_INODE(inode); | |
1817 | loff_t leaf_count = ADDRS_PER_BLOCK(inode); | |
1818 | ||
1819 | /* two direct node blocks */ | |
1820 | result += (leaf_count * 2); | |
1821 | ||
1822 | /* two indirect node blocks */ | |
1823 | leaf_count *= NIDS_PER_BLOCK; | |
1824 | result += (leaf_count * 2); | |
1825 | ||
1826 | /* one double indirect node block */ | |
1827 | leaf_count *= NIDS_PER_BLOCK; | |
1828 | result += leaf_count; | |
1829 | ||
1830 | return result; | |
1831 | } | |
1832 | ||
9ab70134 JK |
1833 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1834 | u64 start, u64 len) | |
1835 | { | |
b876f4c9 | 1836 | struct f2fs_map_blocks map; |
7f63eb77 | 1837 | sector_t start_blk, last_blk; |
da85985c | 1838 | pgoff_t next_pgofs; |
7f63eb77 JK |
1839 | u64 logical = 0, phys = 0, size = 0; |
1840 | u32 flags = 0; | |
7f63eb77 | 1841 | int ret = 0; |
093f0bac | 1842 | bool compr_cluster = false, compr_appended; |
bf38fbad | 1843 | unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; |
093f0bac | 1844 | unsigned int count_in_cluster = 0; |
0bb2045c | 1845 | loff_t maxbytes; |
7f63eb77 | 1846 | |
c4020b2d CY |
1847 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1848 | ret = f2fs_precache_extents(inode); | |
1849 | if (ret) | |
1850 | return ret; | |
1851 | } | |
1852 | ||
45dd052e | 1853 | ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1854 | if (ret) |
1855 | return ret; | |
1856 | ||
f1b43d4c CY |
1857 | inode_lock(inode); |
1858 | ||
0bb2045c CX |
1859 | maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS; |
1860 | if (start > maxbytes) { | |
1861 | ret = -EFBIG; | |
1862 | goto out; | |
1863 | } | |
1864 | ||
1865 | if (len > maxbytes || (maxbytes - len) < start) | |
1866 | len = maxbytes - start; | |
1867 | ||
442a9dbd CY |
1868 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1869 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1870 | goto out; | |
1871 | } | |
1872 | ||
7975f349 | 1873 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1874 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1875 | if (ret != -EAGAIN) | |
f1b43d4c | 1876 | goto out; |
67f8cf3c JK |
1877 | } |
1878 | ||
6cbfcab5 JK |
1879 | if (bytes_to_blks(inode, len) == 0) |
1880 | len = blks_to_bytes(inode, 1); | |
7f63eb77 | 1881 | |
6cbfcab5 JK |
1882 | start_blk = bytes_to_blks(inode, start); |
1883 | last_blk = bytes_to_blks(inode, start + len - 1); | |
9a950d52 | 1884 | |
7f63eb77 | 1885 | next: |
b876f4c9 JK |
1886 | memset(&map, 0, sizeof(map)); |
1887 | map.m_lblk = start_blk; | |
1888 | map.m_len = bytes_to_blks(inode, len); | |
1889 | map.m_next_pgofs = &next_pgofs; | |
1890 | map.m_seg_type = NO_CHECK_TYPE; | |
7f63eb77 | 1891 | |
093f0bac DJ |
1892 | if (compr_cluster) { |
1893 | map.m_lblk += 1; | |
1894 | map.m_len = cluster_size - count_in_cluster; | |
1895 | } | |
bf38fbad | 1896 | |
b876f4c9 | 1897 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
7f63eb77 JK |
1898 | if (ret) |
1899 | goto out; | |
1900 | ||
1901 | /* HOLE */ | |
093f0bac | 1902 | if (!compr_cluster && !(map.m_flags & F2FS_MAP_FLAGS)) { |
da85985c | 1903 | start_blk = next_pgofs; |
58736fa6 | 1904 | |
6cbfcab5 | 1905 | if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode, |
bf38fbad | 1906 | max_inode_blocks(inode))) |
9a950d52 | 1907 | goto prep_next; |
58736fa6 | 1908 | |
9a950d52 FL |
1909 | flags |= FIEMAP_EXTENT_LAST; |
1910 | } | |
7f63eb77 | 1911 | |
093f0bac DJ |
1912 | compr_appended = false; |
1913 | /* In a case of compressed cluster, append this to the last extent */ | |
1914 | if (compr_cluster && ((map.m_flags & F2FS_MAP_UNWRITTEN) || | |
1915 | !(map.m_flags & F2FS_MAP_FLAGS))) { | |
1916 | compr_appended = true; | |
1917 | goto skip_fill; | |
1918 | } | |
1919 | ||
da5af127 | 1920 | if (size) { |
0953fe86 | 1921 | flags |= FIEMAP_EXTENT_MERGED; |
62230e0d | 1922 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1923 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1924 | ||
9a950d52 FL |
1925 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1926 | phys, size, flags); | |
dd5a09bd | 1927 | trace_f2fs_fiemap(inode, logical, phys, size, flags, ret); |
bf38fbad CY |
1928 | if (ret) |
1929 | goto out; | |
1930 | size = 0; | |
da5af127 | 1931 | } |
7f63eb77 | 1932 | |
bf38fbad | 1933 | if (start_blk > last_blk) |
9a950d52 | 1934 | goto out; |
7f63eb77 | 1935 | |
093f0bac | 1936 | skip_fill: |
b876f4c9 | 1937 | if (map.m_pblk == COMPRESS_ADDR) { |
bf38fbad | 1938 | compr_cluster = true; |
093f0bac DJ |
1939 | count_in_cluster = 1; |
1940 | } else if (compr_appended) { | |
1941 | unsigned int appended_blks = cluster_size - | |
1942 | count_in_cluster + 1; | |
1943 | size += blks_to_bytes(inode, appended_blks); | |
1944 | start_blk += appended_blks; | |
1945 | compr_cluster = false; | |
1946 | } else { | |
1947 | logical = blks_to_bytes(inode, start_blk); | |
1948 | phys = __is_valid_data_blkaddr(map.m_pblk) ? | |
1949 | blks_to_bytes(inode, map.m_pblk) : 0; | |
1950 | size = blks_to_bytes(inode, map.m_len); | |
1951 | flags = 0; | |
1952 | ||
1953 | if (compr_cluster) { | |
1954 | flags = FIEMAP_EXTENT_ENCODED; | |
1955 | count_in_cluster += map.m_len; | |
1956 | if (count_in_cluster == cluster_size) { | |
1957 | compr_cluster = false; | |
1958 | size += blks_to_bytes(inode, 1); | |
1959 | } | |
1960 | } else if (map.m_flags & F2FS_MAP_UNWRITTEN) { | |
1961 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
1962 | } | |
7f63eb77 | 1963 | |
093f0bac DJ |
1964 | start_blk += bytes_to_blks(inode, size); |
1965 | } | |
7f63eb77 | 1966 | |
9a950d52 | 1967 | prep_next: |
7f63eb77 JK |
1968 | cond_resched(); |
1969 | if (fatal_signal_pending(current)) | |
1970 | ret = -EINTR; | |
1971 | else | |
1972 | goto next; | |
1973 | out: | |
1974 | if (ret == 1) | |
1975 | ret = 0; | |
1976 | ||
5955102c | 1977 | inode_unlock(inode); |
7f63eb77 | 1978 | return ret; |
9ab70134 JK |
1979 | } |
1980 | ||
95ae251f EB |
1981 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
1982 | { | |
1983 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
1984 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
1985 | return inode->i_sb->s_maxbytes; | |
1986 | ||
1987 | return i_size_read(inode); | |
1988 | } | |
1989 | ||
2df0ab04 CY |
1990 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
1991 | unsigned nr_pages, | |
1992 | struct f2fs_map_blocks *map, | |
1993 | struct bio **bio_ret, | |
1994 | sector_t *last_block_in_bio, | |
1995 | bool is_readahead) | |
1996 | { | |
1997 | struct bio *bio = *bio_ret; | |
43b9d4b4 | 1998 | const unsigned blocksize = blks_to_bytes(inode, 1); |
2df0ab04 CY |
1999 | sector_t block_in_file; |
2000 | sector_t last_block; | |
2001 | sector_t last_block_in_file; | |
2002 | sector_t block_nr; | |
2003 | int ret = 0; | |
2004 | ||
4969c06a | 2005 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 2006 | last_block = block_in_file + nr_pages; |
43b9d4b4 JK |
2007 | last_block_in_file = bytes_to_blks(inode, |
2008 | f2fs_readpage_limit(inode) + blocksize - 1); | |
2df0ab04 CY |
2009 | if (last_block > last_block_in_file) |
2010 | last_block = last_block_in_file; | |
2011 | ||
2012 | /* just zeroing out page which is beyond EOF */ | |
2013 | if (block_in_file >= last_block) | |
2014 | goto zero_out; | |
2015 | /* | |
2016 | * Map blocks using the previous result first. | |
2017 | */ | |
2018 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
2019 | block_in_file > map->m_lblk && | |
2020 | block_in_file < (map->m_lblk + map->m_len)) | |
2021 | goto got_it; | |
2022 | ||
2023 | /* | |
2024 | * Then do more f2fs_map_blocks() calls until we are | |
2025 | * done with this page. | |
2026 | */ | |
2027 | map->m_lblk = block_in_file; | |
2028 | map->m_len = last_block - block_in_file; | |
2029 | ||
2030 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
2031 | if (ret) | |
2032 | goto out; | |
2033 | got_it: | |
2034 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
2035 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
2036 | SetPageMappedToDisk(page); | |
2037 | ||
4969c06a JK |
2038 | if (!PageUptodate(page) && (!PageSwapCache(page) && |
2039 | !cleancache_get_page(page))) { | |
2df0ab04 CY |
2040 | SetPageUptodate(page); |
2041 | goto confused; | |
2042 | } | |
2043 | ||
2044 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
93770ab7 | 2045 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 2046 | ret = -EFSCORRUPTED; |
2df0ab04 CY |
2047 | goto out; |
2048 | } | |
2049 | } else { | |
2050 | zero_out: | |
2051 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
2052 | if (f2fs_need_verity(inode, page->index) && |
2053 | !fsverity_verify_page(page)) { | |
2054 | ret = -EIO; | |
2055 | goto out; | |
2056 | } | |
2df0ab04 CY |
2057 | if (!PageUptodate(page)) |
2058 | SetPageUptodate(page); | |
2059 | unlock_page(page); | |
2060 | goto out; | |
2061 | } | |
2062 | ||
2063 | /* | |
2064 | * This page will go to BIO. Do we need to send this | |
2065 | * BIO off first? | |
2066 | */ | |
27aacd28 ST |
2067 | if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio, |
2068 | *last_block_in_bio, block_nr) || | |
2069 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
2df0ab04 CY |
2070 | submit_and_realloc: |
2071 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2072 | bio = NULL; | |
2073 | } | |
2074 | if (bio == NULL) { | |
2075 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
0683728a | 2076 | is_readahead ? REQ_RAHEAD : 0, page->index, |
7f59b277 | 2077 | false); |
2df0ab04 CY |
2078 | if (IS_ERR(bio)) { |
2079 | ret = PTR_ERR(bio); | |
2080 | bio = NULL; | |
2081 | goto out; | |
2082 | } | |
2083 | } | |
2084 | ||
2085 | /* | |
2086 | * If the page is under writeback, we need to wait for | |
2087 | * its completion to see the correct decrypted data. | |
2088 | */ | |
2089 | f2fs_wait_on_block_writeback(inode, block_nr); | |
2090 | ||
2091 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2092 | goto submit_and_realloc; | |
2093 | ||
2094 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
8b83ac81 | 2095 | f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE); |
2df0ab04 CY |
2096 | ClearPageError(page); |
2097 | *last_block_in_bio = block_nr; | |
2098 | goto out; | |
2099 | confused: | |
2100 | if (bio) { | |
2101 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2102 | bio = NULL; | |
2103 | } | |
2104 | unlock_page(page); | |
2105 | out: | |
2106 | *bio_ret = bio; | |
2107 | return ret; | |
2108 | } | |
2109 | ||
4c8ff709 CY |
2110 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2111 | int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, | |
2112 | unsigned nr_pages, sector_t *last_block_in_bio, | |
0683728a | 2113 | bool is_readahead, bool for_write) |
4c8ff709 CY |
2114 | { |
2115 | struct dnode_of_data dn; | |
2116 | struct inode *inode = cc->inode; | |
2117 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2118 | struct bio *bio = *bio_ret; | |
2119 | unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; | |
2120 | sector_t last_block_in_file; | |
43b9d4b4 | 2121 | const unsigned blocksize = blks_to_bytes(inode, 1); |
4c8ff709 | 2122 | struct decompress_io_ctx *dic = NULL; |
94afd6d6 CY |
2123 | struct extent_info ei = {0, }; |
2124 | bool from_dnode = true; | |
4c8ff709 CY |
2125 | int i; |
2126 | int ret = 0; | |
2127 | ||
2128 | f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); | |
2129 | ||
43b9d4b4 JK |
2130 | last_block_in_file = bytes_to_blks(inode, |
2131 | f2fs_readpage_limit(inode) + blocksize - 1); | |
4c8ff709 CY |
2132 | |
2133 | /* get rid of pages beyond EOF */ | |
2134 | for (i = 0; i < cc->cluster_size; i++) { | |
2135 | struct page *page = cc->rpages[i]; | |
2136 | ||
2137 | if (!page) | |
2138 | continue; | |
2139 | if ((sector_t)page->index >= last_block_in_file) { | |
2140 | zero_user_segment(page, 0, PAGE_SIZE); | |
2141 | if (!PageUptodate(page)) | |
2142 | SetPageUptodate(page); | |
2143 | } else if (!PageUptodate(page)) { | |
2144 | continue; | |
2145 | } | |
2146 | unlock_page(page); | |
9605f75c JK |
2147 | if (for_write) |
2148 | put_page(page); | |
4c8ff709 CY |
2149 | cc->rpages[i] = NULL; |
2150 | cc->nr_rpages--; | |
2151 | } | |
2152 | ||
2153 | /* we are done since all pages are beyond EOF */ | |
2154 | if (f2fs_cluster_is_empty(cc)) | |
2155 | goto out; | |
2156 | ||
94afd6d6 CY |
2157 | if (f2fs_lookup_extent_cache(inode, start_idx, &ei)) |
2158 | from_dnode = false; | |
2159 | ||
2160 | if (!from_dnode) | |
2161 | goto skip_reading_dnode; | |
2162 | ||
4c8ff709 CY |
2163 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
2164 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
2165 | if (ret) | |
2166 | goto out; | |
2167 | ||
a86d27dd | 2168 | f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); |
4c8ff709 | 2169 | |
94afd6d6 | 2170 | skip_reading_dnode: |
4c8ff709 CY |
2171 | for (i = 1; i < cc->cluster_size; i++) { |
2172 | block_t blkaddr; | |
2173 | ||
94afd6d6 CY |
2174 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2175 | dn.ofs_in_node + i) : | |
2176 | ei.blk + i - 1; | |
4c8ff709 CY |
2177 | |
2178 | if (!__is_valid_data_blkaddr(blkaddr)) | |
2179 | break; | |
2180 | ||
2181 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
2182 | ret = -EFAULT; | |
2183 | goto out_put_dnode; | |
2184 | } | |
2185 | cc->nr_cpages++; | |
94afd6d6 CY |
2186 | |
2187 | if (!from_dnode && i >= ei.c_len) | |
2188 | break; | |
4c8ff709 CY |
2189 | } |
2190 | ||
2191 | /* nothing to decompress */ | |
2192 | if (cc->nr_cpages == 0) { | |
2193 | ret = 0; | |
2194 | goto out_put_dnode; | |
2195 | } | |
2196 | ||
2197 | dic = f2fs_alloc_dic(cc); | |
2198 | if (IS_ERR(dic)) { | |
2199 | ret = PTR_ERR(dic); | |
2200 | goto out_put_dnode; | |
2201 | } | |
2202 | ||
6ce19aff | 2203 | for (i = 0; i < cc->nr_cpages; i++) { |
4c8ff709 CY |
2204 | struct page *page = dic->cpages[i]; |
2205 | block_t blkaddr; | |
7f59b277 | 2206 | struct bio_post_read_ctx *ctx; |
4c8ff709 | 2207 | |
94afd6d6 CY |
2208 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2209 | dn.ofs_in_node + i + 1) : | |
2210 | ei.blk + i; | |
4c8ff709 | 2211 | |
6ce19aff CY |
2212 | f2fs_wait_on_block_writeback(inode, blkaddr); |
2213 | ||
2214 | if (f2fs_load_compressed_page(sbi, page, blkaddr)) { | |
2215 | if (atomic_dec_and_test(&dic->remaining_pages)) | |
2216 | f2fs_decompress_cluster(dic); | |
2217 | continue; | |
2218 | } | |
2219 | ||
27aacd28 ST |
2220 | if (bio && (!page_is_mergeable(sbi, bio, |
2221 | *last_block_in_bio, blkaddr) || | |
2222 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
4c8ff709 CY |
2223 | submit_and_realloc: |
2224 | __submit_bio(sbi, bio, DATA); | |
2225 | bio = NULL; | |
2226 | } | |
2227 | ||
2228 | if (!bio) { | |
2229 | bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, | |
2230 | is_readahead ? REQ_RAHEAD : 0, | |
7f59b277 | 2231 | page->index, for_write); |
4c8ff709 CY |
2232 | if (IS_ERR(bio)) { |
2233 | ret = PTR_ERR(bio); | |
7f59b277 | 2234 | f2fs_decompress_end_io(dic, ret); |
4c8ff709 | 2235 | f2fs_put_dnode(&dn); |
f3494345 | 2236 | *bio_ret = NULL; |
4c8ff709 CY |
2237 | return ret; |
2238 | } | |
2239 | } | |
2240 | ||
4c8ff709 CY |
2241 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
2242 | goto submit_and_realloc; | |
2243 | ||
a4b68176 | 2244 | ctx = get_post_read_ctx(bio); |
7f59b277 EB |
2245 | ctx->enabled_steps |= STEP_DECOMPRESS; |
2246 | refcount_inc(&dic->refcnt); | |
03382f1a | 2247 | |
4c8ff709 | 2248 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 2249 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
9c122384 | 2250 | f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE); |
4c8ff709 CY |
2251 | ClearPageError(page); |
2252 | *last_block_in_bio = blkaddr; | |
2253 | } | |
2254 | ||
94afd6d6 CY |
2255 | if (from_dnode) |
2256 | f2fs_put_dnode(&dn); | |
4c8ff709 CY |
2257 | |
2258 | *bio_ret = bio; | |
2259 | return 0; | |
2260 | ||
2261 | out_put_dnode: | |
94afd6d6 CY |
2262 | if (from_dnode) |
2263 | f2fs_put_dnode(&dn); | |
4c8ff709 | 2264 | out: |
7f59b277 EB |
2265 | for (i = 0; i < cc->cluster_size; i++) { |
2266 | if (cc->rpages[i]) { | |
2267 | ClearPageUptodate(cc->rpages[i]); | |
2268 | ClearPageError(cc->rpages[i]); | |
2269 | unlock_page(cc->rpages[i]); | |
2270 | } | |
2271 | } | |
4c8ff709 CY |
2272 | *bio_ret = bio; |
2273 | return ret; | |
2274 | } | |
2275 | #endif | |
2276 | ||
f1e88660 JK |
2277 | /* |
2278 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
2279 | * Major change was from block_size == page_size in f2fs by default. | |
2280 | */ | |
e20a7693 | 2281 | static int f2fs_mpage_readpages(struct inode *inode, |
23323196 | 2282 | struct readahead_control *rac, struct page *page) |
f1e88660 JK |
2283 | { |
2284 | struct bio *bio = NULL; | |
f1e88660 | 2285 | sector_t last_block_in_bio = 0; |
f1e88660 | 2286 | struct f2fs_map_blocks map; |
4c8ff709 CY |
2287 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2288 | struct compress_ctx cc = { | |
2289 | .inode = inode, | |
2290 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2291 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2292 | .cluster_idx = NULL_CLUSTER, | |
2293 | .rpages = NULL, | |
2294 | .cpages = NULL, | |
2295 | .nr_rpages = 0, | |
2296 | .nr_cpages = 0, | |
2297 | }; | |
a2649315 | 2298 | pgoff_t nc_cluster_idx = NULL_CLUSTER; |
4c8ff709 | 2299 | #endif |
23323196 | 2300 | unsigned nr_pages = rac ? readahead_count(rac) : 1; |
4c8ff709 | 2301 | unsigned max_nr_pages = nr_pages; |
2df0ab04 | 2302 | int ret = 0; |
f1e88660 JK |
2303 | |
2304 | map.m_pblk = 0; | |
2305 | map.m_lblk = 0; | |
2306 | map.m_len = 0; | |
2307 | map.m_flags = 0; | |
da85985c | 2308 | map.m_next_pgofs = NULL; |
c4020b2d | 2309 | map.m_next_extent = NULL; |
d5097be5 | 2310 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 2311 | map.m_may_create = false; |
f1e88660 | 2312 | |
736c0a74 | 2313 | for (; nr_pages; nr_pages--) { |
23323196 MWO |
2314 | if (rac) { |
2315 | page = readahead_page(rac); | |
a83d50bc | 2316 | prefetchw(&page->flags); |
f1e88660 JK |
2317 | } |
2318 | ||
4c8ff709 CY |
2319 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2320 | if (f2fs_compressed_file(inode)) { | |
2321 | /* there are remained comressed pages, submit them */ | |
2322 | if (!f2fs_cluster_can_merge_page(&cc, page->index)) { | |
2323 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2324 | max_nr_pages, | |
2325 | &last_block_in_bio, | |
23323196 | 2326 | rac != NULL, false); |
8bfbfb0d | 2327 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2328 | if (ret) |
2329 | goto set_error_page; | |
2330 | } | |
a2649315 FC |
2331 | if (cc.cluster_idx == NULL_CLUSTER) { |
2332 | if (nc_cluster_idx == | |
2333 | page->index >> cc.log_cluster_size) { | |
2334 | goto read_single_page; | |
2335 | } | |
4c8ff709 | 2336 | |
a2649315 FC |
2337 | ret = f2fs_is_compressed_cluster(inode, page->index); |
2338 | if (ret < 0) | |
2339 | goto set_error_page; | |
2340 | else if (!ret) { | |
2341 | nc_cluster_idx = | |
2342 | page->index >> cc.log_cluster_size; | |
2343 | goto read_single_page; | |
2344 | } | |
4c8ff709 | 2345 | |
a2649315 FC |
2346 | nc_cluster_idx = NULL_CLUSTER; |
2347 | } | |
4c8ff709 CY |
2348 | ret = f2fs_init_compress_ctx(&cc); |
2349 | if (ret) | |
2350 | goto set_error_page; | |
2351 | ||
2352 | f2fs_compress_ctx_add_page(&cc, page); | |
2353 | ||
2354 | goto next_page; | |
2355 | } | |
2356 | read_single_page: | |
2357 | #endif | |
2358 | ||
2359 | ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, | |
23323196 | 2360 | &bio, &last_block_in_bio, rac); |
2df0ab04 | 2361 | if (ret) { |
4c8ff709 CY |
2362 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2363 | set_error_page: | |
2364 | #endif | |
2df0ab04 | 2365 | SetPageError(page); |
09cbfeaf | 2366 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 2367 | unlock_page(page); |
f1e88660 | 2368 | } |
23323196 | 2369 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
f1e88660 | 2370 | next_page: |
23323196 MWO |
2371 | #endif |
2372 | if (rac) | |
09cbfeaf | 2373 | put_page(page); |
4c8ff709 CY |
2374 | |
2375 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2376 | if (f2fs_compressed_file(inode)) { | |
2377 | /* last page */ | |
2378 | if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) { | |
2379 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2380 | max_nr_pages, | |
2381 | &last_block_in_bio, | |
23323196 | 2382 | rac != NULL, false); |
8bfbfb0d | 2383 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2384 | } |
2385 | } | |
2386 | #endif | |
f1e88660 | 2387 | } |
f1e88660 | 2388 | if (bio) |
4fc29c1a | 2389 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
23323196 | 2390 | return ret; |
f1e88660 JK |
2391 | } |
2392 | ||
eb47b800 JK |
2393 | static int f2fs_read_data_page(struct file *file, struct page *page) |
2394 | { | |
4969c06a | 2395 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 2396 | int ret = -EAGAIN; |
9ffe0fb5 | 2397 | |
c20e89cd CY |
2398 | trace_f2fs_readpage(page, DATA); |
2399 | ||
4c8ff709 CY |
2400 | if (!f2fs_is_compress_backend_ready(inode)) { |
2401 | unlock_page(page); | |
2402 | return -EOPNOTSUPP; | |
2403 | } | |
2404 | ||
e1c42045 | 2405 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
2406 | if (f2fs_has_inline_data(inode)) |
2407 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 2408 | if (ret == -EAGAIN) |
e20a7693 | 2409 | ret = f2fs_mpage_readpages(inode, NULL, page); |
9ffe0fb5 | 2410 | return ret; |
eb47b800 JK |
2411 | } |
2412 | ||
23323196 | 2413 | static void f2fs_readahead(struct readahead_control *rac) |
eb47b800 | 2414 | { |
23323196 | 2415 | struct inode *inode = rac->mapping->host; |
b8c29400 | 2416 | |
23323196 | 2417 | trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac)); |
9ffe0fb5 | 2418 | |
4c8ff709 | 2419 | if (!f2fs_is_compress_backend_ready(inode)) |
23323196 | 2420 | return; |
4c8ff709 | 2421 | |
9ffe0fb5 HL |
2422 | /* If the file has inline data, skip readpages */ |
2423 | if (f2fs_has_inline_data(inode)) | |
23323196 | 2424 | return; |
9ffe0fb5 | 2425 | |
e20a7693 | 2426 | f2fs_mpage_readpages(inode, rac, NULL); |
eb47b800 JK |
2427 | } |
2428 | ||
4c8ff709 | 2429 | int f2fs_encrypt_one_page(struct f2fs_io_info *fio) |
7eab0c0d HP |
2430 | { |
2431 | struct inode *inode = fio->page->mapping->host; | |
4c8ff709 | 2432 | struct page *mpage, *page; |
7eab0c0d HP |
2433 | gfp_t gfp_flags = GFP_NOFS; |
2434 | ||
1958593e | 2435 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
2436 | return 0; |
2437 | ||
4c8ff709 CY |
2438 | page = fio->compressed_page ? fio->compressed_page : fio->page; |
2439 | ||
6dbb1796 | 2440 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 2441 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d | 2442 | |
27aacd28 ST |
2443 | if (fscrypt_inode_uses_inline_crypto(inode)) |
2444 | return 0; | |
2445 | ||
7eab0c0d | 2446 | retry_encrypt: |
4c8ff709 CY |
2447 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, |
2448 | PAGE_SIZE, 0, gfp_flags); | |
6aa58d8a CY |
2449 | if (IS_ERR(fio->encrypted_page)) { |
2450 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
2451 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
2452 | f2fs_flush_merged_writes(fio->sbi); | |
5df7731f | 2453 | congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); |
6aa58d8a CY |
2454 | gfp_flags |= __GFP_NOFAIL; |
2455 | goto retry_encrypt; | |
2456 | } | |
2457 | return PTR_ERR(fio->encrypted_page); | |
2458 | } | |
7eab0c0d | 2459 | |
6aa58d8a CY |
2460 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
2461 | if (mpage) { | |
2462 | if (PageUptodate(mpage)) | |
2463 | memcpy(page_address(mpage), | |
2464 | page_address(fio->encrypted_page), PAGE_SIZE); | |
2465 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 2466 | } |
6aa58d8a | 2467 | return 0; |
7eab0c0d HP |
2468 | } |
2469 | ||
bb9e3bb8 CY |
2470 | static inline bool check_inplace_update_policy(struct inode *inode, |
2471 | struct f2fs_io_info *fio) | |
7eab0c0d | 2472 | { |
bb9e3bb8 CY |
2473 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2474 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 2475 | |
bb9e3bb8 CY |
2476 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
2477 | return true; | |
4d57b86d | 2478 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
2479 | return true; |
2480 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
2481 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
2482 | return true; | |
4d57b86d | 2483 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
2484 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
2485 | return true; | |
2486 | ||
2487 | /* | |
2488 | * IPU for rewrite async pages | |
2489 | */ | |
2490 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
2491 | fio && fio->op == REQ_OP_WRITE && | |
2492 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 2493 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
2494 | return true; |
2495 | ||
2496 | /* this is only set during fdatasync */ | |
2497 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
2498 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
2499 | return true; | |
2500 | ||
4354994f DR |
2501 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2502 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2503 | return true; | |
2504 | ||
bb9e3bb8 CY |
2505 | return false; |
2506 | } | |
2507 | ||
4d57b86d | 2508 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 2509 | { |
859fca6b CY |
2510 | /* swap file is migrating in aligned write mode */ |
2511 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2512 | return false; | |
2513 | ||
1ad71a27 JK |
2514 | if (f2fs_is_pinned_file(inode)) |
2515 | return true; | |
bb9e3bb8 CY |
2516 | |
2517 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
2518 | if (file_is_cold(inode)) | |
2519 | return true; | |
2520 | ||
2521 | return check_inplace_update_policy(inode, fio); | |
2522 | } | |
2523 | ||
4d57b86d | 2524 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
2525 | { |
2526 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2527 | ||
b0332a0f | 2528 | if (f2fs_lfs_mode(sbi)) |
bb9e3bb8 CY |
2529 | return true; |
2530 | if (S_ISDIR(inode->i_mode)) | |
2531 | return true; | |
af033b2a CY |
2532 | if (IS_NOQUOTA(inode)) |
2533 | return true; | |
bb9e3bb8 CY |
2534 | if (f2fs_is_atomic_file(inode)) |
2535 | return true; | |
1ffc8f5f JK |
2536 | if (is_sbi_flag_set(sbi, SBI_NEED_FSCK)) |
2537 | return true; | |
859fca6b CY |
2538 | |
2539 | /* swap file is migrating in aligned write mode */ | |
2540 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2541 | return true; | |
2542 | ||
bb9e3bb8 | 2543 | if (fio) { |
b763f3be | 2544 | if (page_private_gcing(fio->page)) |
bb9e3bb8 | 2545 | return true; |
b763f3be | 2546 | if (page_private_dummy(fio->page)) |
bb9e3bb8 | 2547 | return true; |
4354994f DR |
2548 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2549 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2550 | return true; | |
bb9e3bb8 CY |
2551 | } |
2552 | return false; | |
2553 | } | |
2554 | ||
7eab0c0d HP |
2555 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
2556 | { | |
2557 | struct inode *inode = fio->page->mapping->host; | |
2558 | ||
4d57b86d | 2559 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
2560 | return false; |
2561 | ||
4d57b86d | 2562 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
2563 | } |
2564 | ||
4d57b86d | 2565 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 2566 | { |
05ca3632 | 2567 | struct page *page = fio->page; |
eb47b800 | 2568 | struct inode *inode = page->mapping->host; |
eb47b800 | 2569 | struct dnode_of_data dn; |
94afd6d6 | 2570 | struct extent_info ei = {0, }; |
7735730d | 2571 | struct node_info ni; |
e959c8f5 | 2572 | bool ipu_force = false; |
eb47b800 JK |
2573 | int err = 0; |
2574 | ||
2575 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
2576 | if (need_inplace_update(fio) && |
2577 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
2578 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 2579 | |
c9b60788 | 2580 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
93770ab7 | 2581 | DATA_GENERIC_ENHANCE)) |
10f966bb | 2582 | return -EFSCORRUPTED; |
c9b60788 CY |
2583 | |
2584 | ipu_force = true; | |
2585 | fio->need_lock = LOCK_DONE; | |
2586 | goto got_it; | |
e959c8f5 | 2587 | } |
279d6df2 | 2588 | |
d29460e5 JK |
2589 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2590 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2591 | return -EAGAIN; | |
279d6df2 | 2592 | |
4d57b86d | 2593 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2594 | if (err) |
279d6df2 | 2595 | goto out; |
eb47b800 | 2596 | |
28bc106b | 2597 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2598 | |
2599 | /* This page is already truncated */ | |
7a9d7548 | 2600 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2601 | ClearPageUptodate(page); |
b763f3be | 2602 | clear_page_private_gcing(page); |
eb47b800 | 2603 | goto out_writepage; |
2bca1e23 | 2604 | } |
e959c8f5 | 2605 | got_it: |
c9b60788 CY |
2606 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2607 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2608 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2609 | err = -EFSCORRUPTED; |
c9b60788 CY |
2610 | goto out_writepage; |
2611 | } | |
eb47b800 JK |
2612 | /* |
2613 | * If current allocation needs SSR, | |
2614 | * it had better in-place writes for updated data. | |
2615 | */ | |
93770ab7 CY |
2616 | if (ipu_force || |
2617 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2618 | need_inplace_update(fio))) { |
4c8ff709 | 2619 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2620 | if (err) |
2621 | goto out_writepage; | |
2622 | ||
2623 | set_page_writeback(page); | |
17c50035 | 2624 | ClearPageError(page); |
279d6df2 | 2625 | f2fs_put_dnode(&dn); |
cc15620b | 2626 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2627 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2628 | err = f2fs_inplace_write_data(fio); |
6492a335 | 2629 | if (err) { |
27aacd28 | 2630 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
d2d0727b | 2631 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2632 | if (PageWriteback(page)) |
2633 | end_page_writeback(page); | |
cd23ffa9 CY |
2634 | } else { |
2635 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2636 | } |
7eab0c0d | 2637 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2638 | return err; |
eb47b800 | 2639 | } |
279d6df2 | 2640 | |
cc15620b JK |
2641 | if (fio->need_lock == LOCK_RETRY) { |
2642 | if (!f2fs_trylock_op(fio->sbi)) { | |
2643 | err = -EAGAIN; | |
2644 | goto out_writepage; | |
2645 | } | |
2646 | fio->need_lock = LOCK_REQ; | |
2647 | } | |
2648 | ||
7735730d CY |
2649 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
2650 | if (err) | |
2651 | goto out_writepage; | |
2652 | ||
2653 | fio->version = ni.version; | |
2654 | ||
4c8ff709 | 2655 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2656 | if (err) |
2657 | goto out_writepage; | |
2658 | ||
2659 | set_page_writeback(page); | |
17c50035 | 2660 | ClearPageError(page); |
cc15620b | 2661 | |
4c8ff709 CY |
2662 | if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) |
2663 | f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); | |
2664 | ||
279d6df2 | 2665 | /* LFS mode write path */ |
4d57b86d | 2666 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2667 | trace_f2fs_do_write_data_page(page, OPU); |
2668 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2669 | if (page->index == 0) | |
2670 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2671 | out_writepage: |
2672 | f2fs_put_dnode(&dn); | |
279d6df2 | 2673 | out: |
cc15620b | 2674 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2675 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2676 | return err; |
2677 | } | |
2678 | ||
4c8ff709 | 2679 | int f2fs_write_single_data_page(struct page *page, int *submitted, |
8648de2c CY |
2680 | struct bio **bio, |
2681 | sector_t *last_block, | |
b0af6d49 | 2682 | struct writeback_control *wbc, |
4c8ff709 | 2683 | enum iostat_type io_type, |
3afae09f CY |
2684 | int compr_blocks, |
2685 | bool allow_balance) | |
eb47b800 JK |
2686 | { |
2687 | struct inode *inode = page->mapping->host; | |
4081363f | 2688 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 | 2689 | loff_t i_size = i_size_read(inode); |
4c8ff709 | 2690 | const pgoff_t end_index = ((unsigned long long)i_size) |
09cbfeaf | 2691 | >> PAGE_SHIFT; |
1f0d5c91 | 2692 | loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2693 | unsigned offset = 0; |
39936837 | 2694 | bool need_balance_fs = false; |
eb47b800 | 2695 | int err = 0; |
458e6197 | 2696 | struct f2fs_io_info fio = { |
05ca3632 | 2697 | .sbi = sbi, |
39d787be | 2698 | .ino = inode->i_ino, |
458e6197 | 2699 | .type = DATA, |
04d328de | 2700 | .op = REQ_OP_WRITE, |
7637241e | 2701 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2702 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2703 | .page = page, |
4375a336 | 2704 | .encrypted_page = NULL, |
d68f735b | 2705 | .submitted = false, |
4c8ff709 | 2706 | .compr_blocks = compr_blocks, |
cc15620b | 2707 | .need_lock = LOCK_RETRY, |
b0af6d49 | 2708 | .io_type = io_type, |
578c6478 | 2709 | .io_wbc = wbc, |
8648de2c CY |
2710 | .bio = bio, |
2711 | .last_block = last_block, | |
458e6197 | 2712 | }; |
eb47b800 | 2713 | |
ecda0de3 CY |
2714 | trace_f2fs_writepage(page, DATA); |
2715 | ||
db198ae0 CY |
2716 | /* we should bypass data pages to proceed the kworkder jobs */ |
2717 | if (unlikely(f2fs_cp_error(sbi))) { | |
2718 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2719 | /* |
2720 | * don't drop any dirty dentry pages for keeping lastest | |
2721 | * directory structure. | |
2722 | */ | |
2723 | if (S_ISDIR(inode->i_mode)) | |
2724 | goto redirty_out; | |
db198ae0 CY |
2725 | goto out; |
2726 | } | |
2727 | ||
0771fcc7 CY |
2728 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2729 | goto redirty_out; | |
2730 | ||
4c8ff709 CY |
2731 | if (page->index < end_index || |
2732 | f2fs_verity_in_progress(inode) || | |
2733 | compr_blocks) | |
39936837 | 2734 | goto write; |
eb47b800 JK |
2735 | |
2736 | /* | |
2737 | * If the offset is out-of-range of file size, | |
2738 | * this page does not have to be written to disk. | |
2739 | */ | |
09cbfeaf | 2740 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2741 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2742 | goto out; |
eb47b800 | 2743 | |
09cbfeaf | 2744 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2745 | write: |
1e84371f JK |
2746 | if (f2fs_is_drop_cache(inode)) |
2747 | goto out; | |
e6e5f561 JK |
2748 | /* we should not write 0'th page having journal header */ |
2749 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
2750 | (!wbc->for_reclaim && | |
4d57b86d | 2751 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 2752 | goto redirty_out; |
eb47b800 | 2753 | |
435cbab9 JK |
2754 | /* Dentry/quota blocks are controlled by checkpoint */ |
2755 | if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) { | |
79963d96 CY |
2756 | /* |
2757 | * We need to wait for node_write to avoid block allocation during | |
2758 | * checkpoint. This can only happen to quota writes which can cause | |
2759 | * the below discard race condition. | |
2760 | */ | |
2761 | if (IS_NOQUOTA(inode)) | |
2762 | down_read(&sbi->node_write); | |
2763 | ||
cc15620b | 2764 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2765 | err = f2fs_do_write_data_page(&fio); |
79963d96 CY |
2766 | |
2767 | if (IS_NOQUOTA(inode)) | |
2768 | up_read(&sbi->node_write); | |
2769 | ||
8618b881 JK |
2770 | goto done; |
2771 | } | |
9ffe0fb5 | 2772 | |
8618b881 | 2773 | if (!wbc->for_reclaim) |
39936837 | 2774 | need_balance_fs = true; |
7f3037a5 | 2775 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2776 | goto redirty_out; |
ef095d19 JK |
2777 | else |
2778 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2779 | |
b3d208f9 | 2780 | err = -EAGAIN; |
dd7b2333 | 2781 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2782 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2783 | if (!err) |
2784 | goto out; | |
2785 | } | |
279d6df2 | 2786 | |
cc15620b | 2787 | if (err == -EAGAIN) { |
4d57b86d | 2788 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2789 | if (err == -EAGAIN) { |
2790 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2791 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2792 | } |
2793 | } | |
a0d00fad | 2794 | |
eb449797 CY |
2795 | if (err) { |
2796 | file_set_keep_isize(inode); | |
2797 | } else { | |
c10c9820 | 2798 | spin_lock(&F2FS_I(inode)->i_size_lock); |
eb449797 CY |
2799 | if (F2FS_I(inode)->last_disk_size < psize) |
2800 | F2FS_I(inode)->last_disk_size = psize; | |
c10c9820 | 2801 | spin_unlock(&F2FS_I(inode)->i_size_lock); |
eb449797 | 2802 | } |
279d6df2 | 2803 | |
8618b881 JK |
2804 | done: |
2805 | if (err && err != -ENOENT) | |
2806 | goto redirty_out; | |
eb47b800 | 2807 | |
39936837 | 2808 | out: |
a7ffdbe2 | 2809 | inode_dec_dirty_pages(inode); |
2baf0781 | 2810 | if (err) { |
2bca1e23 | 2811 | ClearPageUptodate(page); |
b763f3be | 2812 | clear_page_private_gcing(page); |
2baf0781 | 2813 | } |
0c3a5797 CY |
2814 | |
2815 | if (wbc->for_reclaim) { | |
bab475c5 | 2816 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2817 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2818 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2819 | submitted = NULL; |
0c3a5797 | 2820 | } |
eb47b800 | 2821 | unlock_page(page); |
186857c5 | 2822 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
3afae09f | 2823 | !F2FS_I(inode)->cp_task && allow_balance) |
a7881893 | 2824 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2825 | |
d68f735b | 2826 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2827 | f2fs_submit_merged_write(sbi, DATA); |
0b20fcec | 2828 | f2fs_submit_merged_ipu_write(sbi, bio, NULL); |
d68f735b JK |
2829 | submitted = NULL; |
2830 | } | |
2831 | ||
2832 | if (submitted) | |
4c8ff709 | 2833 | *submitted = fio.submitted ? 1 : 0; |
0c3a5797 | 2834 | |
eb47b800 JK |
2835 | return 0; |
2836 | ||
eb47b800 | 2837 | redirty_out: |
76f60268 | 2838 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2839 | /* |
2840 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2841 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2842 | * file_write_and_wait_range() will see EIO error, which is critical | |
2843 | * to return value of fsync() followed by atomic_write failure to user. | |
2844 | */ | |
2845 | if (!err || wbc->for_reclaim) | |
0002b61b | 2846 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2847 | unlock_page(page); |
2848 | return err; | |
fa9150a8 NJ |
2849 | } |
2850 | ||
f566bae8 JK |
2851 | static int f2fs_write_data_page(struct page *page, |
2852 | struct writeback_control *wbc) | |
2853 | { | |
4c8ff709 CY |
2854 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2855 | struct inode *inode = page->mapping->host; | |
2856 | ||
2857 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) | |
2858 | goto out; | |
2859 | ||
2860 | if (f2fs_compressed_file(inode)) { | |
2861 | if (f2fs_is_compressed_cluster(inode, page->index)) { | |
2862 | redirty_page_for_writepage(wbc, page); | |
2863 | return AOP_WRITEPAGE_ACTIVATE; | |
2864 | } | |
2865 | } | |
2866 | out: | |
2867 | #endif | |
2868 | ||
2869 | return f2fs_write_single_data_page(page, NULL, NULL, NULL, | |
3afae09f | 2870 | wbc, FS_DATA_IO, 0, true); |
f566bae8 JK |
2871 | } |
2872 | ||
8f46dcae CY |
2873 | /* |
2874 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2875 | * The major change is making write step of cold data page separately from | |
2876 | * warm/hot data page. | |
2877 | */ | |
2878 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2879 | struct writeback_control *wbc, |
2880 | enum iostat_type io_type) | |
8f46dcae CY |
2881 | { |
2882 | int ret = 0; | |
4c8ff709 | 2883 | int done = 0, retry = 0; |
8f46dcae | 2884 | struct pagevec pvec; |
c29fd0c0 | 2885 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2886 | struct bio *bio = NULL; |
2887 | sector_t last_block; | |
4c8ff709 CY |
2888 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2889 | struct inode *inode = mapping->host; | |
2890 | struct compress_ctx cc = { | |
2891 | .inode = inode, | |
2892 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2893 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2894 | .cluster_idx = NULL_CLUSTER, | |
2895 | .rpages = NULL, | |
2896 | .nr_rpages = 0, | |
2897 | .cpages = NULL, | |
3271d7eb | 2898 | .valid_nr_cpages = 0, |
4c8ff709 CY |
2899 | .rbuf = NULL, |
2900 | .cbuf = NULL, | |
2901 | .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, | |
2902 | .private = NULL, | |
2903 | }; | |
2904 | #endif | |
8f46dcae | 2905 | int nr_pages; |
8f46dcae CY |
2906 | pgoff_t index; |
2907 | pgoff_t end; /* Inclusive */ | |
2908 | pgoff_t done_index; | |
8f46dcae | 2909 | int range_whole = 0; |
10bbd235 | 2910 | xa_mark_t tag; |
bab475c5 | 2911 | int nwritten = 0; |
4c8ff709 CY |
2912 | int submitted = 0; |
2913 | int i; | |
8f46dcae | 2914 | |
86679820 | 2915 | pagevec_init(&pvec); |
46ae957f | 2916 | |
ef095d19 JK |
2917 | if (get_dirty_pages(mapping->host) <= |
2918 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2919 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2920 | else | |
2921 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2922 | ||
8f46dcae | 2923 | if (wbc->range_cyclic) { |
4df7a75f | 2924 | index = mapping->writeback_index; /* prev offset */ |
8f46dcae CY |
2925 | end = -1; |
2926 | } else { | |
09cbfeaf KS |
2927 | index = wbc->range_start >> PAGE_SHIFT; |
2928 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2929 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2930 | range_whole = 1; | |
8f46dcae CY |
2931 | } |
2932 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2933 | tag = PAGECACHE_TAG_TOWRITE; | |
2934 | else | |
2935 | tag = PAGECACHE_TAG_DIRTY; | |
2936 | retry: | |
4c8ff709 | 2937 | retry = 0; |
8f46dcae CY |
2938 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) |
2939 | tag_pages_for_writeback(mapping, index, end); | |
2940 | done_index = index; | |
4c8ff709 | 2941 | while (!done && !retry && (index <= end)) { |
69c4f35d | 2942 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2943 | tag); |
8f46dcae CY |
2944 | if (nr_pages == 0) |
2945 | break; | |
2946 | ||
2947 | for (i = 0; i < nr_pages; i++) { | |
2948 | struct page *page = pvec.pages[i]; | |
4c8ff709 CY |
2949 | bool need_readd; |
2950 | readd: | |
2951 | need_readd = false; | |
2952 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2953 | if (f2fs_compressed_file(inode)) { | |
b368cc5e FC |
2954 | void *fsdata = NULL; |
2955 | struct page *pagep; | |
2956 | int ret2; | |
2957 | ||
4c8ff709 CY |
2958 | ret = f2fs_init_compress_ctx(&cc); |
2959 | if (ret) { | |
2960 | done = 1; | |
2961 | break; | |
2962 | } | |
2963 | ||
2964 | if (!f2fs_cluster_can_merge_page(&cc, | |
2965 | page->index)) { | |
2966 | ret = f2fs_write_multi_pages(&cc, | |
2967 | &submitted, wbc, io_type); | |
2968 | if (!ret) | |
2969 | need_readd = true; | |
2970 | goto result; | |
2971 | } | |
8f46dcae | 2972 | |
4c8ff709 CY |
2973 | if (unlikely(f2fs_cp_error(sbi))) |
2974 | goto lock_page; | |
2975 | ||
b368cc5e FC |
2976 | if (!f2fs_cluster_is_empty(&cc)) |
2977 | goto lock_page; | |
4c8ff709 | 2978 | |
b368cc5e | 2979 | ret2 = f2fs_prepare_compress_overwrite( |
4c8ff709 CY |
2980 | inode, &pagep, |
2981 | page->index, &fsdata); | |
b368cc5e FC |
2982 | if (ret2 < 0) { |
2983 | ret = ret2; | |
2984 | done = 1; | |
2985 | break; | |
2986 | } else if (ret2 && | |
2987 | (!f2fs_compress_write_end(inode, | |
2988 | fsdata, page->index, 1) || | |
2989 | !f2fs_all_cluster_page_loaded(&cc, | |
2990 | &pvec, i, nr_pages))) { | |
2991 | retry = 1; | |
2992 | break; | |
4c8ff709 CY |
2993 | } |
2994 | } | |
2995 | #endif | |
f8de4331 | 2996 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2997 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2998 | wbc->sync_mode == WB_SYNC_NONE) { |
2999 | done = 1; | |
3000 | break; | |
3001 | } | |
4c8ff709 CY |
3002 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3003 | lock_page: | |
3004 | #endif | |
8f46dcae | 3005 | done_index = page->index; |
d29460e5 | 3006 | retry_write: |
8f46dcae CY |
3007 | lock_page(page); |
3008 | ||
3009 | if (unlikely(page->mapping != mapping)) { | |
3010 | continue_unlock: | |
3011 | unlock_page(page); | |
3012 | continue; | |
3013 | } | |
3014 | ||
3015 | if (!PageDirty(page)) { | |
3016 | /* someone wrote it for us */ | |
3017 | goto continue_unlock; | |
3018 | } | |
3019 | ||
8f46dcae | 3020 | if (PageWriteback(page)) { |
0b20fcec | 3021 | if (wbc->sync_mode != WB_SYNC_NONE) |
fec1d657 | 3022 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 3023 | DATA, true, true); |
0b20fcec | 3024 | else |
8f46dcae CY |
3025 | goto continue_unlock; |
3026 | } | |
3027 | ||
8f46dcae CY |
3028 | if (!clear_page_dirty_for_io(page)) |
3029 | goto continue_unlock; | |
3030 | ||
4c8ff709 CY |
3031 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3032 | if (f2fs_compressed_file(inode)) { | |
3033 | get_page(page); | |
3034 | f2fs_compress_ctx_add_page(&cc, page); | |
3035 | continue; | |
3036 | } | |
3037 | #endif | |
3038 | ret = f2fs_write_single_data_page(page, &submitted, | |
3afae09f CY |
3039 | &bio, &last_block, wbc, io_type, |
3040 | 0, true); | |
4c8ff709 CY |
3041 | if (ret == AOP_WRITEPAGE_ACTIVATE) |
3042 | unlock_page(page); | |
3043 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3044 | result: | |
3045 | #endif | |
3046 | nwritten += submitted; | |
3047 | wbc->nr_to_write -= submitted; | |
3048 | ||
8f46dcae | 3049 | if (unlikely(ret)) { |
0002b61b CY |
3050 | /* |
3051 | * keep nr_to_write, since vfs uses this to | |
3052 | * get # of written pages. | |
3053 | */ | |
3054 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
0002b61b | 3055 | ret = 0; |
4c8ff709 | 3056 | goto next; |
d29460e5 JK |
3057 | } else if (ret == -EAGAIN) { |
3058 | ret = 0; | |
3059 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
3060 | cond_resched(); | |
3061 | congestion_wait(BLK_RW_ASYNC, | |
5df7731f | 3062 | DEFAULT_IO_TIMEOUT); |
d29460e5 JK |
3063 | goto retry_write; |
3064 | } | |
4c8ff709 | 3065 | goto next; |
0002b61b | 3066 | } |
b230e6ca JK |
3067 | done_index = page->index + 1; |
3068 | done = 1; | |
3069 | break; | |
8f46dcae CY |
3070 | } |
3071 | ||
4c8ff709 | 3072 | if (wbc->nr_to_write <= 0 && |
687de7f1 | 3073 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
3074 | done = 1; |
3075 | break; | |
3076 | } | |
4c8ff709 CY |
3077 | next: |
3078 | if (need_readd) | |
3079 | goto readd; | |
8f46dcae CY |
3080 | } |
3081 | pagevec_release(&pvec); | |
3082 | cond_resched(); | |
3083 | } | |
4c8ff709 CY |
3084 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3085 | /* flush remained pages in compress cluster */ | |
3086 | if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) { | |
3087 | ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); | |
3088 | nwritten += submitted; | |
3089 | wbc->nr_to_write -= submitted; | |
3090 | if (ret) { | |
3091 | done = 1; | |
3092 | retry = 0; | |
3093 | } | |
3094 | } | |
adfc6943 | 3095 | if (f2fs_compressed_file(inode)) |
8bfbfb0d | 3096 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 | 3097 | #endif |
e78790f8 | 3098 | if (retry) { |
8f46dcae | 3099 | index = 0; |
e78790f8 | 3100 | end = -1; |
8f46dcae CY |
3101 | goto retry; |
3102 | } | |
e78790f8 ST |
3103 | if (wbc->range_cyclic && !done) |
3104 | done_index = 0; | |
8f46dcae CY |
3105 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) |
3106 | mapping->writeback_index = done_index; | |
3107 | ||
bab475c5 | 3108 | if (nwritten) |
b9109b0e | 3109 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 3110 | NULL, 0, DATA); |
8648de2c CY |
3111 | /* submit cached bio of IPU write */ |
3112 | if (bio) | |
0b20fcec | 3113 | f2fs_submit_merged_ipu_write(sbi, &bio, NULL); |
6ca56ca4 | 3114 | |
8f46dcae CY |
3115 | return ret; |
3116 | } | |
3117 | ||
853137ce JK |
3118 | static inline bool __should_serialize_io(struct inode *inode, |
3119 | struct writeback_control *wbc) | |
3120 | { | |
b13f67ff CY |
3121 | /* to avoid deadlock in path of data flush */ |
3122 | if (F2FS_I(inode)->cp_task) | |
3123 | return false; | |
3124 | ||
853137ce JK |
3125 | if (!S_ISREG(inode->i_mode)) |
3126 | return false; | |
af033b2a CY |
3127 | if (IS_NOQUOTA(inode)) |
3128 | return false; | |
b13f67ff | 3129 | |
602a16d5 | 3130 | if (f2fs_need_compress_data(inode)) |
b13f67ff | 3131 | return true; |
853137ce JK |
3132 | if (wbc->sync_mode != WB_SYNC_ALL) |
3133 | return true; | |
3134 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
3135 | return true; | |
3136 | return false; | |
3137 | } | |
3138 | ||
fc99fe27 | 3139 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
3140 | struct writeback_control *wbc, |
3141 | enum iostat_type io_type) | |
eb47b800 JK |
3142 | { |
3143 | struct inode *inode = mapping->host; | |
4081363f | 3144 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 3145 | struct blk_plug plug; |
eb47b800 | 3146 | int ret; |
853137ce | 3147 | bool locked = false; |
eb47b800 | 3148 | |
cfb185a1 | 3149 | /* deal with chardevs and other special file */ |
3150 | if (!mapping->a_ops->writepage) | |
3151 | return 0; | |
3152 | ||
6a290544 CY |
3153 | /* skip writing if there is no dirty page in this inode */ |
3154 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
3155 | return 0; | |
3156 | ||
0771fcc7 CY |
3157 | /* during POR, we don't need to trigger writepage at all. */ |
3158 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
3159 | goto skip_write; | |
3160 | ||
af033b2a CY |
3161 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
3162 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 3163 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 3164 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
3165 | goto skip_write; |
3166 | ||
d323d005 | 3167 | /* skip writing during file defragment */ |
91942321 | 3168 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
3169 | goto skip_write; |
3170 | ||
d31c7c3f YH |
3171 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
3172 | ||
687de7f1 JK |
3173 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
3174 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
3175 | atomic_inc(&sbi->wb_sync_req[DATA]); |
3176 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
3177 | goto skip_write; |
3178 | ||
853137ce JK |
3179 | if (__should_serialize_io(inode, wbc)) { |
3180 | mutex_lock(&sbi->writepages); | |
3181 | locked = true; | |
3182 | } | |
3183 | ||
9dfa1baf | 3184 | blk_start_plug(&plug); |
b0af6d49 | 3185 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 3186 | blk_finish_plug(&plug); |
687de7f1 | 3187 | |
853137ce JK |
3188 | if (locked) |
3189 | mutex_unlock(&sbi->writepages); | |
3190 | ||
687de7f1 | 3191 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 3192 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
3193 | /* |
3194 | * if some pages were truncated, we cannot guarantee its mapping->host | |
3195 | * to detect pending bios. | |
3196 | */ | |
458e6197 | 3197 | |
4d57b86d | 3198 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 3199 | return ret; |
d3baf95d JK |
3200 | |
3201 | skip_write: | |
a7ffdbe2 | 3202 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 3203 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 3204 | return 0; |
eb47b800 JK |
3205 | } |
3206 | ||
b0af6d49 CY |
3207 | static int f2fs_write_data_pages(struct address_space *mapping, |
3208 | struct writeback_control *wbc) | |
3209 | { | |
3210 | struct inode *inode = mapping->host; | |
3211 | ||
3212 | return __f2fs_write_data_pages(mapping, wbc, | |
3213 | F2FS_I(inode)->cp_task == current ? | |
3214 | FS_CP_DATA_IO : FS_DATA_IO); | |
3215 | } | |
3216 | ||
a1e09b03 | 3217 | void f2fs_write_failed(struct inode *inode, loff_t to) |
3aab8f82 | 3218 | { |
819d9153 | 3219 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 3220 | |
3f188c23 JK |
3221 | if (IS_NOQUOTA(inode)) |
3222 | return; | |
3223 | ||
95ae251f EB |
3224 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
3225 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
a33c1502 | 3226 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6abaa83c | 3227 | filemap_invalidate_lock(inode->i_mapping); |
a33c1502 | 3228 | |
819d9153 | 3229 | truncate_pagecache(inode, i_size); |
3f188c23 | 3230 | f2fs_truncate_blocks(inode, i_size, true); |
a33c1502 | 3231 | |
6abaa83c | 3232 | filemap_invalidate_unlock(inode->i_mapping); |
6f8d4455 | 3233 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
3234 | } |
3235 | } | |
3236 | ||
2aadac08 JK |
3237 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
3238 | struct page *page, loff_t pos, unsigned len, | |
3239 | block_t *blk_addr, bool *node_changed) | |
3240 | { | |
3241 | struct inode *inode = page->mapping->host; | |
3242 | pgoff_t index = page->index; | |
3243 | struct dnode_of_data dn; | |
3244 | struct page *ipage; | |
b4d07a3e | 3245 | bool locked = false; |
94afd6d6 | 3246 | struct extent_info ei = {0, }; |
2aadac08 | 3247 | int err = 0; |
2866fb16 | 3248 | int flag; |
2aadac08 | 3249 | |
24b84912 | 3250 | /* |
3d697a4a EB |
3251 | * If a whole page is being written and we already preallocated all the |
3252 | * blocks, then there is no need to get a block address now. | |
24b84912 | 3253 | */ |
3d697a4a | 3254 | if (len == PAGE_SIZE && is_inode_flag_set(inode, FI_PREALLOCATED_ALL)) |
24b84912 JK |
3255 | return 0; |
3256 | ||
2866fb16 SY |
3257 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
3258 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
3259 | flag = F2FS_GET_BLOCK_DEFAULT; | |
3260 | else | |
3261 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
3262 | ||
b4d07a3e | 3263 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 3264 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
0ef81833 | 3265 | f2fs_do_map_lock(sbi, flag, true); |
b4d07a3e JK |
3266 | locked = true; |
3267 | } | |
4c8ff709 | 3268 | |
b4d07a3e | 3269 | restart: |
2aadac08 | 3270 | /* check inline_data */ |
4d57b86d | 3271 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
3272 | if (IS_ERR(ipage)) { |
3273 | err = PTR_ERR(ipage); | |
3274 | goto unlock_out; | |
3275 | } | |
3276 | ||
3277 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3278 | ||
3279 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 3280 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 3281 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 3282 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d | 3283 | if (inode->i_nlink) |
b763f3be | 3284 | set_page_private_inline(ipage); |
2aadac08 JK |
3285 | } else { |
3286 | err = f2fs_convert_inline_page(&dn, page); | |
3287 | if (err) | |
b4d07a3e JK |
3288 | goto out; |
3289 | if (dn.data_blkaddr == NULL_ADDR) | |
3290 | err = f2fs_get_block(&dn, index); | |
3291 | } | |
3292 | } else if (locked) { | |
3293 | err = f2fs_get_block(&dn, index); | |
3294 | } else { | |
3295 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
3296 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
3297 | } else { | |
b4d07a3e | 3298 | /* hole case */ |
4d57b86d | 3299 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 3300 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 3301 | f2fs_put_dnode(&dn); |
0ef81833 | 3302 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
59c9081b | 3303 | true); |
2866fb16 | 3304 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
3305 | locked = true; |
3306 | goto restart; | |
3307 | } | |
2aadac08 JK |
3308 | } |
3309 | } | |
b4d07a3e | 3310 | |
2aadac08 JK |
3311 | /* convert_inline_page can make node_changed */ |
3312 | *blk_addr = dn.data_blkaddr; | |
3313 | *node_changed = dn.node_changed; | |
b4d07a3e | 3314 | out: |
2aadac08 JK |
3315 | f2fs_put_dnode(&dn); |
3316 | unlock_out: | |
b4d07a3e | 3317 | if (locked) |
0ef81833 | 3318 | f2fs_do_map_lock(sbi, flag, false); |
2aadac08 JK |
3319 | return err; |
3320 | } | |
3321 | ||
eb47b800 JK |
3322 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
3323 | loff_t pos, unsigned len, unsigned flags, | |
3324 | struct page **pagep, void **fsdata) | |
3325 | { | |
3326 | struct inode *inode = mapping->host; | |
4081363f | 3327 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 3328 | struct page *page = NULL; |
09cbfeaf | 3329 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 3330 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 3331 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
3332 | int err = 0; |
3333 | ||
62aed044 CY |
3334 | trace_f2fs_write_begin(inode, pos, len, flags); |
3335 | ||
00e09c0b CY |
3336 | if (!f2fs_is_checkpoint_ready(sbi)) { |
3337 | err = -ENOSPC; | |
4354994f | 3338 | goto fail; |
00e09c0b | 3339 | } |
4354994f | 3340 | |
455e3a58 JK |
3341 | if ((f2fs_is_atomic_file(inode) && |
3342 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
3343 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 3344 | err = -ENOMEM; |
a2e2e76b | 3345 | drop_atomic = true; |
57864ae5 JK |
3346 | goto fail; |
3347 | } | |
3348 | ||
5f727395 JK |
3349 | /* |
3350 | * We should check this at this moment to avoid deadlock on inode page | |
3351 | * and #0 page. The locking rule for inline_data conversion should be: | |
3352 | * lock_page(page #0) -> lock_page(inode_page) | |
3353 | */ | |
3354 | if (index != 0) { | |
3355 | err = f2fs_convert_inline_inode(inode); | |
3356 | if (err) | |
3357 | goto fail; | |
3358 | } | |
4c8ff709 CY |
3359 | |
3360 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3361 | if (f2fs_compressed_file(inode)) { | |
3362 | int ret; | |
3363 | ||
3364 | *fsdata = NULL; | |
3365 | ||
7eab7a69 FC |
3366 | if (len == PAGE_SIZE) |
3367 | goto repeat; | |
3368 | ||
4c8ff709 CY |
3369 | ret = f2fs_prepare_compress_overwrite(inode, pagep, |
3370 | index, fsdata); | |
3371 | if (ret < 0) { | |
3372 | err = ret; | |
3373 | goto fail; | |
3374 | } else if (ret) { | |
3375 | return 0; | |
3376 | } | |
3377 | } | |
3378 | #endif | |
3379 | ||
afcb7ca0 | 3380 | repeat: |
86d54795 JK |
3381 | /* |
3382 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
3383 | * wait_for_stable_page. Will wait that below with our IO control. | |
3384 | */ | |
01eccef7 | 3385 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 3386 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
3387 | if (!page) { |
3388 | err = -ENOMEM; | |
3389 | goto fail; | |
3390 | } | |
d5f66990 | 3391 | |
4c8ff709 CY |
3392 | /* TODO: cluster can be compressed due to race with .writepage */ |
3393 | ||
eb47b800 JK |
3394 | *pagep = page; |
3395 | ||
2aadac08 JK |
3396 | err = prepare_write_begin(sbi, page, pos, len, |
3397 | &blkaddr, &need_balance); | |
9ba69cf9 | 3398 | if (err) |
2aadac08 | 3399 | goto fail; |
9ba69cf9 | 3400 | |
af033b2a CY |
3401 | if (need_balance && !IS_NOQUOTA(inode) && |
3402 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 3403 | unlock_page(page); |
2c4db1a6 | 3404 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
3405 | lock_page(page); |
3406 | if (page->mapping != mapping) { | |
3407 | /* The page got truncated from under us */ | |
3408 | f2fs_put_page(page, 1); | |
3409 | goto repeat; | |
3410 | } | |
3411 | } | |
3412 | ||
bae0ee7a | 3413 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 3414 | |
649d7df2 JK |
3415 | if (len == PAGE_SIZE || PageUptodate(page)) |
3416 | return 0; | |
eb47b800 | 3417 | |
95ae251f EB |
3418 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
3419 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
3420 | zero_user_segment(page, len, PAGE_SIZE); |
3421 | return 0; | |
3422 | } | |
3423 | ||
2aadac08 | 3424 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 3425 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 3426 | SetPageUptodate(page); |
eb47b800 | 3427 | } else { |
93770ab7 CY |
3428 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
3429 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 3430 | err = -EFSCORRUPTED; |
93770ab7 CY |
3431 | goto fail; |
3432 | } | |
b7973091 | 3433 | err = f2fs_submit_page_read(inode, page, blkaddr, 0, true); |
13ba41e3 | 3434 | if (err) |
78682f79 | 3435 | goto fail; |
d54c795b | 3436 | |
393ff91f | 3437 | lock_page(page); |
6bacf52f | 3438 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
3439 | f2fs_put_page(page, 1); |
3440 | goto repeat; | |
eb47b800 | 3441 | } |
1563ac75 CY |
3442 | if (unlikely(!PageUptodate(page))) { |
3443 | err = -EIO; | |
3444 | goto fail; | |
4375a336 | 3445 | } |
eb47b800 | 3446 | } |
eb47b800 | 3447 | return 0; |
9ba69cf9 | 3448 | |
3aab8f82 | 3449 | fail: |
86531d6b | 3450 | f2fs_put_page(page, 1); |
3e679dc7 | 3451 | f2fs_write_failed(inode, pos + len); |
a2e2e76b | 3452 | if (drop_atomic) |
4d57b86d | 3453 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 3454 | return err; |
eb47b800 JK |
3455 | } |
3456 | ||
a1dd3c13 JK |
3457 | static int f2fs_write_end(struct file *file, |
3458 | struct address_space *mapping, | |
3459 | loff_t pos, unsigned len, unsigned copied, | |
3460 | struct page *page, void *fsdata) | |
3461 | { | |
3462 | struct inode *inode = page->mapping->host; | |
3463 | ||
dfb2bf38 CY |
3464 | trace_f2fs_write_end(inode, pos, len, copied); |
3465 | ||
649d7df2 JK |
3466 | /* |
3467 | * This should be come from len == PAGE_SIZE, and we expect copied | |
3468 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
3469 | * let generic_perform_write() try to copy data again through copied=0. | |
3470 | */ | |
3471 | if (!PageUptodate(page)) { | |
746e2403 | 3472 | if (unlikely(copied != len)) |
649d7df2 JK |
3473 | copied = 0; |
3474 | else | |
3475 | SetPageUptodate(page); | |
3476 | } | |
4c8ff709 CY |
3477 | |
3478 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3479 | /* overwrite compressed file */ | |
3480 | if (f2fs_compressed_file(inode) && fsdata) { | |
3481 | f2fs_compress_write_end(inode, fsdata, page->index, copied); | |
3482 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
944dd22e CY |
3483 | |
3484 | if (pos + copied > i_size_read(inode) && | |
3485 | !f2fs_verity_in_progress(inode)) | |
3486 | f2fs_i_size_write(inode, pos + copied); | |
4c8ff709 CY |
3487 | return copied; |
3488 | } | |
3489 | #endif | |
3490 | ||
649d7df2 JK |
3491 | if (!copied) |
3492 | goto unlock_out; | |
3493 | ||
34ba94ba | 3494 | set_page_dirty(page); |
a1dd3c13 | 3495 | |
95ae251f EB |
3496 | if (pos + copied > i_size_read(inode) && |
3497 | !f2fs_verity_in_progress(inode)) | |
fc9581c8 | 3498 | f2fs_i_size_write(inode, pos + copied); |
649d7df2 | 3499 | unlock_out: |
3024c9a1 | 3500 | f2fs_put_page(page, 1); |
d0239e1b | 3501 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
3502 | return copied; |
3503 | } | |
3504 | ||
487261f3 CY |
3505 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
3506 | unsigned int length) | |
eb47b800 JK |
3507 | { |
3508 | struct inode *inode = page->mapping->host; | |
487261f3 | 3509 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 3510 | |
487261f3 | 3511 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 3512 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
3513 | return; |
3514 | ||
487261f3 | 3515 | if (PageDirty(page)) { |
933439c8 | 3516 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 3517 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 3518 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 3519 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 3520 | } else { |
487261f3 | 3521 | inode_dec_dirty_pages(inode); |
4d57b86d | 3522 | f2fs_remove_dirty_inode(inode); |
933439c8 | 3523 | } |
487261f3 | 3524 | } |
decd36b6 | 3525 | |
b763f3be | 3526 | clear_page_private_gcing(page); |
2baf0781 | 3527 | |
6ce19aff CY |
3528 | if (test_opt(sbi, COMPRESS_CACHE)) { |
3529 | if (f2fs_compressed_file(inode)) | |
3530 | f2fs_invalidate_compress_pages(sbi, inode->i_ino); | |
3531 | if (inode->i_ino == F2FS_COMPRESS_INO(sbi)) | |
3532 | clear_page_private_data(page); | |
3533 | } | |
3534 | ||
b763f3be | 3535 | if (page_private_atomic(page)) |
4d57b86d | 3536 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 3537 | |
b763f3be CY |
3538 | detach_page_private(page); |
3539 | set_page_private(page, 0); | |
eb47b800 JK |
3540 | } |
3541 | ||
487261f3 | 3542 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 3543 | { |
f68daeeb JK |
3544 | /* If this is dirty page, keep PagePrivate */ |
3545 | if (PageDirty(page)) | |
3546 | return 0; | |
3547 | ||
decd36b6 | 3548 | /* This is atomic written page, keep Private */ |
b763f3be | 3549 | if (page_private_atomic(page)) |
decd36b6 CY |
3550 | return 0; |
3551 | ||
6ce19aff CY |
3552 | if (test_opt(F2FS_P_SB(page), COMPRESS_CACHE)) { |
3553 | struct f2fs_sb_info *sbi = F2FS_P_SB(page); | |
3554 | struct inode *inode = page->mapping->host; | |
3555 | ||
3556 | if (f2fs_compressed_file(inode)) | |
3557 | f2fs_invalidate_compress_pages(sbi, inode->i_ino); | |
3558 | if (inode->i_ino == F2FS_COMPRESS_INO(sbi)) | |
3559 | clear_page_private_data(page); | |
3560 | } | |
3561 | ||
b763f3be CY |
3562 | clear_page_private_gcing(page); |
3563 | ||
3564 | detach_page_private(page); | |
3565 | set_page_private(page, 0); | |
c3850aa1 | 3566 | return 1; |
eb47b800 JK |
3567 | } |
3568 | ||
3569 | static int f2fs_set_data_page_dirty(struct page *page) | |
3570 | { | |
4969c06a | 3571 | struct inode *inode = page_file_mapping(page)->host; |
eb47b800 | 3572 | |
26c6b887 JK |
3573 | trace_f2fs_set_page_dirty(page, DATA); |
3574 | ||
237c0790 JK |
3575 | if (!PageUptodate(page)) |
3576 | SetPageUptodate(page); | |
4969c06a JK |
3577 | if (PageSwapCache(page)) |
3578 | return __set_page_dirty_nobuffers(page); | |
34ba94ba | 3579 | |
5fe45743 | 3580 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
b763f3be | 3581 | if (!page_private_atomic(page)) { |
4d57b86d | 3582 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
3583 | return 1; |
3584 | } | |
3585 | /* | |
3586 | * Previously, this page has been registered, we just | |
3587 | * return here. | |
3588 | */ | |
3589 | return 0; | |
34ba94ba JK |
3590 | } |
3591 | ||
eb47b800 | 3592 | if (!PageDirty(page)) { |
b87078ad | 3593 | __set_page_dirty_nobuffers(page); |
4d57b86d | 3594 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
3595 | return 1; |
3596 | } | |
3597 | return 0; | |
3598 | } | |
3599 | ||
c1c63387 CY |
3600 | |
3601 | static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) | |
3602 | { | |
3603 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3604 | struct dnode_of_data dn; | |
3605 | sector_t start_idx, blknr = 0; | |
3606 | int ret; | |
3607 | ||
3608 | start_idx = round_down(block, F2FS_I(inode)->i_cluster_size); | |
3609 | ||
3610 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
3611 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
3612 | if (ret) | |
3613 | return 0; | |
3614 | ||
3615 | if (dn.data_blkaddr != COMPRESS_ADDR) { | |
3616 | dn.ofs_in_node += block - start_idx; | |
3617 | blknr = f2fs_data_blkaddr(&dn); | |
3618 | if (!__is_valid_data_blkaddr(blknr)) | |
3619 | blknr = 0; | |
3620 | } | |
3621 | ||
3622 | f2fs_put_dnode(&dn); | |
c1c63387 CY |
3623 | return blknr; |
3624 | #else | |
250e84d7 | 3625 | return 0; |
c1c63387 CY |
3626 | #endif |
3627 | } | |
3628 | ||
3629 | ||
c01e54b7 JK |
3630 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
3631 | { | |
454ae7e5 | 3632 | struct inode *inode = mapping->host; |
b79b0a31 | 3633 | sector_t blknr = 0; |
454ae7e5 | 3634 | |
1d373a0e | 3635 | if (f2fs_has_inline_data(inode)) |
b79b0a31 | 3636 | goto out; |
1d373a0e JK |
3637 | |
3638 | /* make sure allocating whole blocks */ | |
3639 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
3640 | filemap_write_and_wait(mapping); | |
3641 | ||
4eda1682 | 3642 | /* Block number less than F2FS MAX BLOCKS */ |
6d1451bf | 3643 | if (unlikely(block >= max_file_blocks(inode))) |
4eda1682 | 3644 | goto out; |
c1c63387 | 3645 | |
4eda1682 DJ |
3646 | if (f2fs_compressed_file(inode)) { |
3647 | blknr = f2fs_bmap_compress(inode, block); | |
3648 | } else { | |
b876f4c9 JK |
3649 | struct f2fs_map_blocks map; |
3650 | ||
3651 | memset(&map, 0, sizeof(map)); | |
3652 | map.m_lblk = block; | |
3653 | map.m_len = 1; | |
3654 | map.m_next_pgofs = NULL; | |
3655 | map.m_seg_type = NO_CHECK_TYPE; | |
3656 | ||
3657 | if (!f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_BMAP)) | |
3658 | blknr = map.m_pblk; | |
4eda1682 | 3659 | } |
b79b0a31 CY |
3660 | out: |
3661 | trace_f2fs_bmap(inode, block, blknr); | |
3662 | return blknr; | |
429511cd CY |
3663 | } |
3664 | ||
5b7a487c WG |
3665 | #ifdef CONFIG_MIGRATION |
3666 | #include <linux/migrate.h> | |
3667 | ||
3668 | int f2fs_migrate_page(struct address_space *mapping, | |
3669 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
3670 | { | |
3671 | int rc, extra_count; | |
3672 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
b763f3be | 3673 | bool atomic_written = page_private_atomic(page); |
5b7a487c WG |
3674 | |
3675 | BUG_ON(PageWriteback(page)); | |
3676 | ||
3677 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
3678 | if (atomic_written) { |
3679 | if (mode != MIGRATE_SYNC) | |
3680 | return -EBUSY; | |
3681 | if (!mutex_trylock(&fi->inmem_lock)) | |
3682 | return -EAGAIN; | |
3683 | } | |
5b7a487c | 3684 | |
240a5915 CY |
3685 | /* one extra reference was held for atomic_write page */ |
3686 | extra_count = atomic_written ? 1 : 0; | |
5b7a487c | 3687 | rc = migrate_page_move_mapping(mapping, newpage, |
37109694 | 3688 | page, extra_count); |
5b7a487c WG |
3689 | if (rc != MIGRATEPAGE_SUCCESS) { |
3690 | if (atomic_written) | |
3691 | mutex_unlock(&fi->inmem_lock); | |
3692 | return rc; | |
3693 | } | |
3694 | ||
3695 | if (atomic_written) { | |
3696 | struct inmem_pages *cur; | |
5f029c04 | 3697 | |
5b7a487c WG |
3698 | list_for_each_entry(cur, &fi->inmem_pages, list) |
3699 | if (cur->page == page) { | |
3700 | cur->page = newpage; | |
3701 | break; | |
3702 | } | |
3703 | mutex_unlock(&fi->inmem_lock); | |
3704 | put_page(page); | |
3705 | get_page(newpage); | |
3706 | } | |
3707 | ||
c9ebd3df JK |
3708 | /* guarantee to start from no stale private field */ |
3709 | set_page_private(newpage, 0); | |
240a5915 | 3710 | if (PagePrivate(page)) { |
b763f3be CY |
3711 | set_page_private(newpage, page_private(page)); |
3712 | SetPagePrivate(newpage); | |
3713 | get_page(newpage); | |
3714 | ||
3715 | set_page_private(page, 0); | |
3716 | ClearPagePrivate(page); | |
3717 | put_page(page); | |
240a5915 | 3718 | } |
5b7a487c | 3719 | |
2916ecc0 JG |
3720 | if (mode != MIGRATE_SYNC_NO_COPY) |
3721 | migrate_page_copy(newpage, page); | |
3722 | else | |
3723 | migrate_page_states(newpage, page); | |
5b7a487c WG |
3724 | |
3725 | return MIGRATEPAGE_SUCCESS; | |
3726 | } | |
3727 | #endif | |
3728 | ||
4969c06a | 3729 | #ifdef CONFIG_SWAP |
859fca6b CY |
3730 | static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, |
3731 | unsigned int blkcnt) | |
3732 | { | |
3733 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
3734 | unsigned int blkofs; | |
3735 | unsigned int blk_per_sec = BLKS_PER_SEC(sbi); | |
3736 | unsigned int secidx = start_blk / blk_per_sec; | |
3737 | unsigned int end_sec = secidx + blkcnt / blk_per_sec; | |
3738 | int ret = 0; | |
3739 | ||
3740 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
edc6d01b | 3741 | filemap_invalidate_lock(inode->i_mapping); |
859fca6b CY |
3742 | |
3743 | set_inode_flag(inode, FI_ALIGNED_WRITE); | |
3744 | ||
3745 | for (; secidx < end_sec; secidx++) { | |
3746 | down_write(&sbi->pin_sem); | |
3747 | ||
3748 | f2fs_lock_op(sbi); | |
3749 | f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false); | |
3750 | f2fs_unlock_op(sbi); | |
3751 | ||
3752 | set_inode_flag(inode, FI_DO_DEFRAG); | |
3753 | ||
3754 | for (blkofs = 0; blkofs < blk_per_sec; blkofs++) { | |
3755 | struct page *page; | |
3756 | unsigned int blkidx = secidx * blk_per_sec + blkofs; | |
3757 | ||
3758 | page = f2fs_get_lock_data_page(inode, blkidx, true); | |
3759 | if (IS_ERR(page)) { | |
3760 | up_write(&sbi->pin_sem); | |
3761 | ret = PTR_ERR(page); | |
3762 | goto done; | |
3763 | } | |
3764 | ||
3765 | set_page_dirty(page); | |
3766 | f2fs_put_page(page, 1); | |
3767 | } | |
3768 | ||
3769 | clear_inode_flag(inode, FI_DO_DEFRAG); | |
3770 | ||
3771 | ret = filemap_fdatawrite(inode->i_mapping); | |
3772 | ||
3773 | up_write(&sbi->pin_sem); | |
3774 | ||
3775 | if (ret) | |
3776 | break; | |
3777 | } | |
3778 | ||
3779 | done: | |
3780 | clear_inode_flag(inode, FI_DO_DEFRAG); | |
3781 | clear_inode_flag(inode, FI_ALIGNED_WRITE); | |
3782 | ||
edc6d01b | 3783 | filemap_invalidate_unlock(inode->i_mapping); |
859fca6b CY |
3784 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3785 | ||
3786 | return ret; | |
3787 | } | |
3788 | ||
0b8fc006 | 3789 | static int check_swap_activate(struct swap_info_struct *sis, |
af4b6b8e CY |
3790 | struct file *swap_file, sector_t *span) |
3791 | { | |
3792 | struct address_space *mapping = swap_file->f_mapping; | |
3793 | struct inode *inode = mapping->host; | |
36e4d958 | 3794 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
af4b6b8e CY |
3795 | sector_t cur_lblock; |
3796 | sector_t last_lblock; | |
3797 | sector_t pblock; | |
3798 | sector_t lowest_pblock = -1; | |
3799 | sector_t highest_pblock = 0; | |
3800 | int nr_extents = 0; | |
3801 | unsigned long nr_pblocks; | |
859fca6b CY |
3802 | unsigned int blks_per_sec = BLKS_PER_SEC(sbi); |
3803 | unsigned int sec_blks_mask = BLKS_PER_SEC(sbi) - 1; | |
ca298241 | 3804 | unsigned int not_aligned = 0; |
36e4d958 | 3805 | int ret = 0; |
af4b6b8e CY |
3806 | |
3807 | /* | |
3808 | * Map all the blocks into the extent list. This code doesn't try | |
3809 | * to be very smart. | |
3810 | */ | |
3811 | cur_lblock = 0; | |
6cbfcab5 | 3812 | last_lblock = bytes_to_blks(inode, i_size_read(inode)); |
af4b6b8e | 3813 | |
1da66103 | 3814 | while (cur_lblock < last_lblock && cur_lblock < sis->max) { |
b876f4c9 | 3815 | struct f2fs_map_blocks map; |
859fca6b | 3816 | retry: |
af4b6b8e CY |
3817 | cond_resched(); |
3818 | ||
b876f4c9 JK |
3819 | memset(&map, 0, sizeof(map)); |
3820 | map.m_lblk = cur_lblock; | |
36e4d958 | 3821 | map.m_len = last_lblock - cur_lblock; |
3822 | map.m_next_pgofs = NULL; | |
3823 | map.m_next_extent = NULL; | |
b876f4c9 | 3824 | map.m_seg_type = NO_CHECK_TYPE; |
36e4d958 | 3825 | map.m_may_create = false; |
af4b6b8e | 3826 | |
b876f4c9 | 3827 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
af4b6b8e | 3828 | if (ret) |
36e4d958 | 3829 | goto out; |
af4b6b8e CY |
3830 | |
3831 | /* hole */ | |
36e4d958 | 3832 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
833dcd35 | 3833 | f2fs_err(sbi, "Swapfile has holes"); |
f395183f | 3834 | ret = -EINVAL; |
36e4d958 | 3835 | goto out; |
3836 | } | |
af4b6b8e | 3837 | |
b876f4c9 JK |
3838 | pblock = map.m_pblk; |
3839 | nr_pblocks = map.m_len; | |
af4b6b8e | 3840 | |
859fca6b CY |
3841 | if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask || |
3842 | nr_pblocks & sec_blks_mask) { | |
ca298241 | 3843 | not_aligned++; |
36e4d958 | 3844 | |
859fca6b CY |
3845 | nr_pblocks = roundup(nr_pblocks, blks_per_sec); |
3846 | if (cur_lblock + nr_pblocks > sis->max) | |
3847 | nr_pblocks -= blks_per_sec; | |
3848 | ||
3849 | if (!nr_pblocks) { | |
3850 | /* this extent is last one */ | |
3851 | nr_pblocks = map.m_len; | |
3852 | f2fs_warn(sbi, "Swapfile: last extent is not aligned to section"); | |
3853 | goto next; | |
3854 | } | |
3855 | ||
3856 | ret = f2fs_migrate_blocks(inode, cur_lblock, | |
3857 | nr_pblocks); | |
3858 | if (ret) | |
3859 | goto out; | |
3860 | goto retry; | |
3861 | } | |
3862 | next: | |
af4b6b8e CY |
3863 | if (cur_lblock + nr_pblocks >= sis->max) |
3864 | nr_pblocks = sis->max - cur_lblock; | |
3865 | ||
3866 | if (cur_lblock) { /* exclude the header page */ | |
3867 | if (pblock < lowest_pblock) | |
3868 | lowest_pblock = pblock; | |
3869 | if (pblock + nr_pblocks - 1 > highest_pblock) | |
3870 | highest_pblock = pblock + nr_pblocks - 1; | |
3871 | } | |
3872 | ||
3873 | /* | |
3874 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3875 | */ | |
3876 | ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock); | |
3877 | if (ret < 0) | |
3878 | goto out; | |
3879 | nr_extents += ret; | |
3880 | cur_lblock += nr_pblocks; | |
3881 | } | |
3882 | ret = nr_extents; | |
3883 | *span = 1 + highest_pblock - lowest_pblock; | |
3884 | if (cur_lblock == 0) | |
3885 | cur_lblock = 1; /* force Empty message */ | |
3886 | sis->max = cur_lblock; | |
3887 | sis->pages = cur_lblock - 1; | |
3888 | sis->highest_bit = cur_lblock - 1; | |
3889 | out: | |
859fca6b CY |
3890 | if (not_aligned) |
3891 | f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(%u * N)", | |
3892 | not_aligned, blks_per_sec * F2FS_BLKSIZE); | |
af4b6b8e | 3893 | return ret; |
af4b6b8e CY |
3894 | } |
3895 | ||
4969c06a JK |
3896 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, |
3897 | sector_t *span) | |
3898 | { | |
3899 | struct inode *inode = file_inode(file); | |
3900 | int ret; | |
3901 | ||
3902 | if (!S_ISREG(inode->i_mode)) | |
3903 | return -EINVAL; | |
3904 | ||
3905 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3906 | return -EROFS; | |
3907 | ||
d927ccfc SK |
3908 | if (f2fs_lfs_mode(F2FS_I_SB(inode))) { |
3909 | f2fs_err(F2FS_I_SB(inode), | |
3910 | "Swapfile not supported in LFS mode"); | |
3911 | return -EINVAL; | |
3912 | } | |
3913 | ||
4969c06a JK |
3914 | ret = f2fs_convert_inline_inode(inode); |
3915 | if (ret) | |
3916 | return ret; | |
3917 | ||
78134d03 | 3918 | if (!f2fs_disable_compressed_file(inode)) |
4c8ff709 CY |
3919 | return -EINVAL; |
3920 | ||
0b979f1b CY |
3921 | f2fs_precache_extents(inode); |
3922 | ||
3e5e479a CY |
3923 | ret = check_swap_activate(sis, file, span); |
3924 | if (ret < 0) | |
4969c06a JK |
3925 | return ret; |
3926 | ||
3927 | set_inode_flag(inode, FI_PIN_FILE); | |
4969c06a | 3928 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3e5e479a | 3929 | return ret; |
4969c06a JK |
3930 | } |
3931 | ||
3932 | static void f2fs_swap_deactivate(struct file *file) | |
3933 | { | |
3934 | struct inode *inode = file_inode(file); | |
3935 | ||
3936 | clear_inode_flag(inode, FI_PIN_FILE); | |
3937 | } | |
3938 | #else | |
3939 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3940 | sector_t *span) | |
3941 | { | |
3942 | return -EOPNOTSUPP; | |
3943 | } | |
3944 | ||
3945 | static void f2fs_swap_deactivate(struct file *file) | |
3946 | { | |
3947 | } | |
3948 | #endif | |
3949 | ||
eb47b800 JK |
3950 | const struct address_space_operations f2fs_dblock_aops = { |
3951 | .readpage = f2fs_read_data_page, | |
23323196 | 3952 | .readahead = f2fs_readahead, |
eb47b800 JK |
3953 | .writepage = f2fs_write_data_page, |
3954 | .writepages = f2fs_write_data_pages, | |
3955 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 3956 | .write_end = f2fs_write_end, |
eb47b800 | 3957 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
3958 | .invalidatepage = f2fs_invalidate_page, |
3959 | .releasepage = f2fs_release_page, | |
a1e09b03 | 3960 | .direct_IO = noop_direct_IO, |
c01e54b7 | 3961 | .bmap = f2fs_bmap, |
4969c06a JK |
3962 | .swap_activate = f2fs_swap_activate, |
3963 | .swap_deactivate = f2fs_swap_deactivate, | |
5b7a487c WG |
3964 | #ifdef CONFIG_MIGRATION |
3965 | .migratepage = f2fs_migrate_page, | |
3966 | #endif | |
eb47b800 | 3967 | }; |
6dbb1796 | 3968 | |
5ec2d99d | 3969 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
3970 | { |
3971 | struct address_space *mapping = page_mapping(page); | |
3972 | unsigned long flags; | |
3973 | ||
3974 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 3975 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
3976 | PAGECACHE_TAG_DIRTY); |
3977 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
3978 | } | |
3979 | ||
6dbb1796 EB |
3980 | int __init f2fs_init_post_read_processing(void) |
3981 | { | |
95ae251f EB |
3982 | bio_post_read_ctx_cache = |
3983 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
3984 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
3985 | if (!bio_post_read_ctx_cache) |
3986 | goto fail; | |
3987 | bio_post_read_ctx_pool = | |
3988 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
3989 | bio_post_read_ctx_cache); | |
3990 | if (!bio_post_read_ctx_pool) | |
3991 | goto fail_free_cache; | |
3992 | return 0; | |
3993 | ||
3994 | fail_free_cache: | |
3995 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3996 | fail: | |
3997 | return -ENOMEM; | |
3998 | } | |
3999 | ||
0b20fcec | 4000 | void f2fs_destroy_post_read_processing(void) |
6dbb1796 EB |
4001 | { |
4002 | mempool_destroy(bio_post_read_ctx_pool); | |
4003 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4004 | } | |
0b20fcec | 4005 | |
4c8ff709 CY |
4006 | int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) |
4007 | { | |
4008 | if (!f2fs_sb_has_encrypt(sbi) && | |
4009 | !f2fs_sb_has_verity(sbi) && | |
4010 | !f2fs_sb_has_compression(sbi)) | |
4011 | return 0; | |
4012 | ||
4013 | sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", | |
4014 | WQ_UNBOUND | WQ_HIGHPRI, | |
4015 | num_online_cpus()); | |
4016 | if (!sbi->post_read_wq) | |
4017 | return -ENOMEM; | |
4018 | return 0; | |
4019 | } | |
4020 | ||
4021 | void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) | |
4022 | { | |
4023 | if (sbi->post_read_wq) | |
4024 | destroy_workqueue(sbi->post_read_wq); | |
4025 | } | |
4026 | ||
0b20fcec CY |
4027 | int __init f2fs_init_bio_entry_cache(void) |
4028 | { | |
98510003 | 4029 | bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab", |
0b20fcec CY |
4030 | sizeof(struct bio_entry)); |
4031 | if (!bio_entry_slab) | |
4032 | return -ENOMEM; | |
4033 | return 0; | |
4034 | } | |
4035 | ||
f543805f | 4036 | void f2fs_destroy_bio_entry_cache(void) |
0b20fcec CY |
4037 | { |
4038 | kmem_cache_destroy(bio_entry_slab); | |
4039 | } | |
1517c1a7 EB |
4040 | |
4041 | static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, | |
4042 | unsigned int flags, struct iomap *iomap, | |
4043 | struct iomap *srcmap) | |
4044 | { | |
4045 | struct f2fs_map_blocks map = {}; | |
4046 | pgoff_t next_pgofs = 0; | |
4047 | int err; | |
4048 | ||
4049 | map.m_lblk = bytes_to_blks(inode, offset); | |
4050 | map.m_len = bytes_to_blks(inode, offset + length - 1) - map.m_lblk + 1; | |
4051 | map.m_next_pgofs = &next_pgofs; | |
4052 | map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint); | |
4053 | if (flags & IOMAP_WRITE) | |
4054 | map.m_may_create = true; | |
4055 | ||
4056 | err = f2fs_map_blocks(inode, &map, flags & IOMAP_WRITE, | |
4057 | F2FS_GET_BLOCK_DIO); | |
4058 | if (err) | |
4059 | return err; | |
4060 | ||
4061 | iomap->offset = blks_to_bytes(inode, map.m_lblk); | |
4062 | ||
4063 | if (map.m_flags & (F2FS_MAP_MAPPED | F2FS_MAP_UNWRITTEN)) { | |
4064 | iomap->length = blks_to_bytes(inode, map.m_len); | |
4065 | if (map.m_flags & F2FS_MAP_MAPPED) { | |
4066 | iomap->type = IOMAP_MAPPED; | |
4067 | iomap->flags |= IOMAP_F_MERGED; | |
4068 | } else { | |
4069 | iomap->type = IOMAP_UNWRITTEN; | |
4070 | } | |
4071 | if (WARN_ON_ONCE(!__is_valid_data_blkaddr(map.m_pblk))) | |
4072 | return -EINVAL; | |
4073 | ||
4074 | iomap->bdev = map.m_bdev; | |
4075 | iomap->addr = blks_to_bytes(inode, map.m_pblk); | |
4076 | } else { | |
4077 | iomap->length = blks_to_bytes(inode, next_pgofs) - | |
4078 | iomap->offset; | |
4079 | iomap->type = IOMAP_HOLE; | |
4080 | iomap->addr = IOMAP_NULL_ADDR; | |
4081 | } | |
4082 | ||
4083 | if (map.m_flags & F2FS_MAP_NEW) | |
4084 | iomap->flags |= IOMAP_F_NEW; | |
4085 | if ((inode->i_state & I_DIRTY_DATASYNC) || | |
4086 | offset + length > i_size_read(inode)) | |
4087 | iomap->flags |= IOMAP_F_DIRTY; | |
4088 | ||
4089 | return 0; | |
4090 | } | |
4091 | ||
4092 | const struct iomap_ops f2fs_iomap_ops = { | |
4093 | .iomap_begin = f2fs_iomap_begin, | |
4094 | }; |