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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> | |
4034247a | 11 | #include <linux/sched/mm.h> |
eb47b800 JK |
12 | #include <linux/mpage.h> |
13 | #include <linux/writeback.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> |
174cd4b1 | 21 | #include <linux/sched/signal.h> |
10c5db28 | 22 | #include <linux/fiemap.h> |
1517c1a7 | 23 | #include <linux/iomap.h> |
eb47b800 JK |
24 | |
25 | #include "f2fs.h" | |
26 | #include "node.h" | |
27 | #include "segment.h" | |
52118743 | 28 | #include "iostat.h" |
848753aa | 29 | #include <trace/events/f2fs.h> |
eb47b800 | 30 | |
6dbb1796 EB |
31 | #define NUM_PREALLOC_POST_READ_CTXS 128 |
32 | ||
33 | static struct kmem_cache *bio_post_read_ctx_cache; | |
0b20fcec | 34 | static struct kmem_cache *bio_entry_slab; |
6dbb1796 | 35 | static mempool_t *bio_post_read_ctx_pool; |
f543805f CY |
36 | static struct bio_set f2fs_bioset; |
37 | ||
38 | #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE | |
39 | ||
40 | int __init f2fs_init_bioset(void) | |
41 | { | |
42 | if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, | |
43 | 0, BIOSET_NEED_BVECS)) | |
44 | return -ENOMEM; | |
45 | return 0; | |
46 | } | |
47 | ||
48 | void f2fs_destroy_bioset(void) | |
49 | { | |
50 | bioset_exit(&f2fs_bioset); | |
51 | } | |
52 | ||
36951b38 CY |
53 | static bool __is_cp_guaranteed(struct page *page) |
54 | { | |
55 | struct address_space *mapping = page->mapping; | |
56 | struct inode *inode; | |
57 | struct f2fs_sb_info *sbi; | |
58 | ||
59 | if (!mapping) | |
60 | return false; | |
61 | ||
62 | inode = mapping->host; | |
63 | sbi = F2FS_I_SB(inode); | |
64 | ||
65 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
a87aff1d | 66 | inode->i_ino == F2FS_NODE_INO(sbi) || |
b763f3be CY |
67 | S_ISDIR(inode->i_mode)) |
68 | return true; | |
69 | ||
70 | if (f2fs_is_compressed_page(page)) | |
71 | return false; | |
72 | if ((S_ISREG(inode->i_mode) && | |
af033b2a | 73 | (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || |
b763f3be | 74 | page_private_gcing(page)) |
36951b38 CY |
75 | return true; |
76 | return false; | |
77 | } | |
78 | ||
5f9abab4 JK |
79 | static enum count_type __read_io_type(struct page *page) |
80 | { | |
4969c06a | 81 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
82 | |
83 | if (mapping) { | |
84 | struct inode *inode = mapping->host; | |
85 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
86 | ||
87 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
88 | return F2FS_RD_META; | |
89 | ||
90 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
91 | return F2FS_RD_NODE; | |
92 | } | |
93 | return F2FS_RD_DATA; | |
94 | } | |
95 | ||
6dbb1796 EB |
96 | /* postprocessing steps for read bios */ |
97 | enum bio_post_read_step { | |
7f59b277 EB |
98 | #ifdef CONFIG_FS_ENCRYPTION |
99 | STEP_DECRYPT = 1 << 0, | |
100 | #else | |
101 | STEP_DECRYPT = 0, /* compile out the decryption-related code */ | |
102 | #endif | |
103 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
104 | STEP_DECOMPRESS = 1 << 1, | |
105 | #else | |
106 | STEP_DECOMPRESS = 0, /* compile out the decompression-related code */ | |
107 | #endif | |
108 | #ifdef CONFIG_FS_VERITY | |
109 | STEP_VERITY = 1 << 2, | |
110 | #else | |
111 | STEP_VERITY = 0, /* compile out the verity-related code */ | |
112 | #endif | |
6dbb1796 EB |
113 | }; |
114 | ||
115 | struct bio_post_read_ctx { | |
116 | struct bio *bio; | |
4c8ff709 | 117 | struct f2fs_sb_info *sbi; |
6dbb1796 | 118 | struct work_struct work; |
6dbb1796 | 119 | unsigned int enabled_steps; |
4931e0c9 | 120 | block_t fs_blkaddr; |
6dbb1796 EB |
121 | }; |
122 | ||
7f59b277 | 123 | static void f2fs_finish_read_bio(struct bio *bio) |
93dfe2ac | 124 | { |
6dbb1796 | 125 | struct bio_vec *bv; |
6dc4f100 | 126 | struct bvec_iter_all iter_all; |
93dfe2ac | 127 | |
7f59b277 EB |
128 | /* |
129 | * Update and unlock the bio's pagecache pages, and put the | |
130 | * decompression context for any compressed pages. | |
131 | */ | |
2b070cfe | 132 | bio_for_each_segment_all(bv, bio, iter_all) { |
7f59b277 | 133 | struct page *page = bv->bv_page; |
6dbb1796 | 134 | |
7f59b277 EB |
135 | if (f2fs_is_compressed_page(page)) { |
136 | if (bio->bi_status) | |
6ce19aff | 137 | f2fs_end_read_compressed_page(page, true, 0); |
7f59b277 | 138 | f2fs_put_page_dic(page); |
4c8ff709 CY |
139 | continue; |
140 | } | |
4c8ff709 | 141 | |
7f59b277 | 142 | /* PG_error was set if decryption or verity failed. */ |
6dbb1796 EB |
143 | if (bio->bi_status || PageError(page)) { |
144 | ClearPageUptodate(page); | |
fb7d70db JK |
145 | /* will re-read again later */ |
146 | ClearPageError(page); | |
6dbb1796 EB |
147 | } else { |
148 | SetPageUptodate(page); | |
149 | } | |
5f9abab4 | 150 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
151 | unlock_page(page); |
152 | } | |
79bbefb1 | 153 | |
7f59b277 EB |
154 | if (bio->bi_private) |
155 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
156 | bio_put(bio); | |
4c8ff709 | 157 | } |
4c8ff709 | 158 | |
7f59b277 | 159 | static void f2fs_verify_bio(struct work_struct *work) |
6dbb1796 EB |
160 | { |
161 | struct bio_post_read_ctx *ctx = | |
162 | container_of(work, struct bio_post_read_ctx, work); | |
644c8c92 | 163 | struct bio *bio = ctx->bio; |
7f59b277 | 164 | bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS); |
644c8c92 EB |
165 | |
166 | /* | |
167 | * fsverity_verify_bio() may call readpages() again, and while verity | |
7f59b277 EB |
168 | * will be disabled for this, decryption and/or decompression may still |
169 | * be needed, resulting in another bio_post_read_ctx being allocated. | |
170 | * So to prevent deadlocks we need to release the current ctx to the | |
171 | * mempool first. This assumes that verity is the last post-read step. | |
644c8c92 EB |
172 | */ |
173 | mempool_free(ctx, bio_post_read_ctx_pool); | |
174 | bio->bi_private = NULL; | |
6dbb1796 | 175 | |
7f59b277 EB |
176 | /* |
177 | * Verify the bio's pages with fs-verity. Exclude compressed pages, | |
178 | * as those were handled separately by f2fs_end_read_compressed_page(). | |
179 | */ | |
180 | if (may_have_compressed_pages) { | |
181 | struct bio_vec *bv; | |
182 | struct bvec_iter_all iter_all; | |
183 | ||
184 | bio_for_each_segment_all(bv, bio, iter_all) { | |
185 | struct page *page = bv->bv_page; | |
186 | ||
187 | if (!f2fs_is_compressed_page(page) && | |
188 | !PageError(page) && !fsverity_verify_page(page)) | |
189 | SetPageError(page); | |
190 | } | |
191 | } else { | |
192 | fsverity_verify_bio(bio); | |
4c8ff709 | 193 | } |
6dbb1796 | 194 | |
7f59b277 | 195 | f2fs_finish_read_bio(bio); |
6dbb1796 EB |
196 | } |
197 | ||
7f59b277 EB |
198 | /* |
199 | * If the bio's data needs to be verified with fs-verity, then enqueue the | |
200 | * verity work for the bio. Otherwise finish the bio now. | |
201 | * | |
202 | * Note that to avoid deadlocks, the verity work can't be done on the | |
203 | * decryption/decompression workqueue. This is because verifying the data pages | |
204 | * can involve reading verity metadata pages from the file, and these verity | |
205 | * metadata pages may be encrypted and/or compressed. | |
206 | */ | |
207 | static void f2fs_verify_and_finish_bio(struct bio *bio) | |
95ae251f | 208 | { |
7f59b277 | 209 | struct bio_post_read_ctx *ctx = bio->bi_private; |
4c8ff709 | 210 | |
7f59b277 EB |
211 | if (ctx && (ctx->enabled_steps & STEP_VERITY)) { |
212 | INIT_WORK(&ctx->work, f2fs_verify_bio); | |
4c8ff709 | 213 | fsverity_enqueue_verify_work(&ctx->work); |
7f59b277 EB |
214 | } else { |
215 | f2fs_finish_read_bio(bio); | |
4c8ff709 | 216 | } |
4c8ff709 | 217 | } |
95ae251f | 218 | |
7f59b277 EB |
219 | /* |
220 | * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last | |
221 | * remaining page was read by @ctx->bio. | |
222 | * | |
223 | * Note that a bio may span clusters (even a mix of compressed and uncompressed | |
224 | * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates | |
225 | * that the bio includes at least one compressed page. The actual decompression | |
226 | * is done on a per-cluster basis, not a per-bio basis. | |
227 | */ | |
228 | static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx) | |
6dbb1796 | 229 | { |
7f59b277 EB |
230 | struct bio_vec *bv; |
231 | struct bvec_iter_all iter_all; | |
232 | bool all_compressed = true; | |
4931e0c9 | 233 | block_t blkaddr = ctx->fs_blkaddr; |
4c8ff709 | 234 | |
7f59b277 EB |
235 | bio_for_each_segment_all(bv, ctx->bio, iter_all) { |
236 | struct page *page = bv->bv_page; | |
4c8ff709 | 237 | |
7f59b277 EB |
238 | /* PG_error was set if decryption failed. */ |
239 | if (f2fs_is_compressed_page(page)) | |
6ce19aff CY |
240 | f2fs_end_read_compressed_page(page, PageError(page), |
241 | blkaddr); | |
7f59b277 EB |
242 | else |
243 | all_compressed = false; | |
6ce19aff CY |
244 | |
245 | blkaddr++; | |
6dbb1796 | 246 | } |
4c8ff709 | 247 | |
7f59b277 EB |
248 | /* |
249 | * Optimization: if all the bio's pages are compressed, then scheduling | |
250 | * the per-bio verity work is unnecessary, as verity will be fully | |
251 | * handled at the compression cluster level. | |
252 | */ | |
253 | if (all_compressed) | |
254 | ctx->enabled_steps &= ~STEP_VERITY; | |
6dbb1796 EB |
255 | } |
256 | ||
7f59b277 | 257 | static void f2fs_post_read_work(struct work_struct *work) |
6dbb1796 | 258 | { |
7f59b277 EB |
259 | struct bio_post_read_ctx *ctx = |
260 | container_of(work, struct bio_post_read_ctx, work); | |
261 | ||
262 | if (ctx->enabled_steps & STEP_DECRYPT) | |
263 | fscrypt_decrypt_bio(ctx->bio); | |
264 | ||
265 | if (ctx->enabled_steps & STEP_DECOMPRESS) | |
266 | f2fs_handle_step_decompress(ctx); | |
267 | ||
268 | f2fs_verify_and_finish_bio(ctx->bio); | |
6dbb1796 EB |
269 | } |
270 | ||
271 | static void f2fs_read_end_io(struct bio *bio) | |
272 | { | |
c45d6002 | 273 | struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); |
a4b68176 DJ |
274 | struct bio_post_read_ctx *ctx; |
275 | ||
276 | iostat_update_and_unbind_ctx(bio, 0); | |
277 | ctx = bio->bi_private; | |
c45d6002 CY |
278 | |
279 | if (time_to_inject(sbi, FAULT_READ_IO)) { | |
280 | f2fs_show_injection_info(sbi, FAULT_READ_IO); | |
4e4cbee9 | 281 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 282 | } |
8b038c70 | 283 | |
7f59b277 EB |
284 | if (bio->bi_status) { |
285 | f2fs_finish_read_bio(bio); | |
6dbb1796 | 286 | return; |
f1e88660 | 287 | } |
6dbb1796 | 288 | |
7f59b277 EB |
289 | if (ctx && (ctx->enabled_steps & (STEP_DECRYPT | STEP_DECOMPRESS))) { |
290 | INIT_WORK(&ctx->work, f2fs_post_read_work); | |
291 | queue_work(ctx->sbi->post_read_wq, &ctx->work); | |
292 | } else { | |
293 | f2fs_verify_and_finish_bio(bio); | |
294 | } | |
f1e88660 JK |
295 | } |
296 | ||
4246a0b6 | 297 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 298 | { |
a4b68176 | 299 | struct f2fs_sb_info *sbi; |
f568849e | 300 | struct bio_vec *bvec; |
6dc4f100 | 301 | struct bvec_iter_all iter_all; |
93dfe2ac | 302 | |
a4b68176 DJ |
303 | iostat_update_and_unbind_ctx(bio, 1); |
304 | sbi = bio->bi_private; | |
305 | ||
6f5c2ed0 | 306 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
c45d6002 | 307 | f2fs_show_injection_info(sbi, FAULT_WRITE_IO); |
6f5c2ed0 CY |
308 | bio->bi_status = BLK_STS_IOERR; |
309 | } | |
310 | ||
2b070cfe | 311 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 312 | struct page *page = bvec->bv_page; |
36951b38 | 313 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 314 | |
b763f3be CY |
315 | if (page_private_dummy(page)) { |
316 | clear_page_private_dummy(page); | |
0a595eba JK |
317 | unlock_page(page); |
318 | mempool_free(page, sbi->write_io_dummy); | |
319 | ||
4e4cbee9 | 320 | if (unlikely(bio->bi_status)) |
0a595eba JK |
321 | f2fs_stop_checkpoint(sbi, true); |
322 | continue; | |
323 | } | |
324 | ||
d2d0727b | 325 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 326 | |
4c8ff709 CY |
327 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
328 | if (f2fs_is_compressed_page(page)) { | |
329 | f2fs_compress_write_end_io(bio, page); | |
330 | continue; | |
331 | } | |
332 | #endif | |
333 | ||
4e4cbee9 | 334 | if (unlikely(bio->bi_status)) { |
5114a97a | 335 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
336 | if (type == F2FS_WB_CP_DATA) |
337 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 338 | } |
7dff55d2 YH |
339 | |
340 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
341 | page->index != nid_of_node(page)); | |
342 | ||
36951b38 | 343 | dec_page_count(sbi, type); |
50fa53ec CY |
344 | if (f2fs_in_warm_node_list(sbi, page)) |
345 | f2fs_del_fsync_node_entry(sbi, page); | |
b763f3be | 346 | clear_page_private_gcing(page); |
93dfe2ac | 347 | end_page_writeback(page); |
f568849e | 348 | } |
36951b38 | 349 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 350 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
351 | wake_up(&sbi->cp_wait); |
352 | ||
353 | bio_put(bio); | |
354 | } | |
355 | ||
3c62be17 | 356 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
5189810a | 357 | block_t blk_addr, sector_t *sector) |
3c62be17 JK |
358 | { |
359 | struct block_device *bdev = sbi->sb->s_bdev; | |
360 | int i; | |
361 | ||
0916878d DLM |
362 | if (f2fs_is_multi_device(sbi)) { |
363 | for (i = 0; i < sbi->s_ndevs; i++) { | |
364 | if (FDEV(i).start_blk <= blk_addr && | |
365 | FDEV(i).end_blk >= blk_addr) { | |
366 | blk_addr -= FDEV(i).start_blk; | |
367 | bdev = FDEV(i).bdev; | |
368 | break; | |
369 | } | |
3c62be17 JK |
370 | } |
371 | } | |
5189810a CH |
372 | |
373 | if (sector) | |
374 | *sector = SECTOR_FROM_BLOCK(blk_addr); | |
3c62be17 JK |
375 | return bdev; |
376 | } | |
377 | ||
378 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
379 | { | |
380 | int i; | |
381 | ||
0916878d DLM |
382 | if (!f2fs_is_multi_device(sbi)) |
383 | return 0; | |
384 | ||
3c62be17 JK |
385 | for (i = 0; i < sbi->s_ndevs; i++) |
386 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
387 | return i; | |
388 | return 0; | |
389 | } | |
390 | ||
b757f6ed | 391 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 392 | { |
b757f6ed | 393 | struct f2fs_sb_info *sbi = fio->sbi; |
5189810a CH |
394 | struct block_device *bdev; |
395 | sector_t sector; | |
940a6d34 GZ |
396 | struct bio *bio; |
397 | ||
5189810a CH |
398 | bdev = f2fs_target_device(sbi, fio->new_blkaddr, §or); |
399 | bio = bio_alloc_bioset(bdev, npages, 0, GFP_NOIO, &f2fs_bioset); | |
400 | bio->bi_iter.bi_sector = sector; | |
b757f6ed | 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; |
5189810a CH |
988 | sector_t sector; |
989 | struct block_device *bdev = f2fs_target_device(sbi, blkaddr, §or); | |
13ba41e3 | 990 | |
5189810a | 991 | bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages), REQ_OP_READ, |
609be106 | 992 | for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset); |
6dbb1796 | 993 | if (!bio) |
13ba41e3 | 994 | return ERR_PTR(-ENOMEM); |
5189810a | 995 | bio->bi_iter.bi_sector = sector; |
27aacd28 | 996 | f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); |
13ba41e3 | 997 | bio->bi_end_io = f2fs_read_end_io; |
13ba41e3 | 998 | |
27aacd28 | 999 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
7f59b277 | 1000 | post_read_steps |= STEP_DECRYPT; |
95ae251f | 1001 | |
7f59b277 EB |
1002 | if (f2fs_need_verity(inode, first_idx)) |
1003 | post_read_steps |= STEP_VERITY; | |
1004 | ||
1005 | /* | |
1006 | * STEP_DECOMPRESS is handled specially, since a compressed file might | |
1007 | * contain both compressed and uncompressed clusters. We'll allocate a | |
1008 | * bio_post_read_ctx if the file is compressed, but the caller is | |
1009 | * responsible for enabling STEP_DECOMPRESS if it's actually needed. | |
1010 | */ | |
1011 | ||
1012 | if (post_read_steps || f2fs_compressed_file(inode)) { | |
e8ce5749 | 1013 | /* Due to the mempool, this never fails. */ |
6dbb1796 | 1014 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); |
6dbb1796 | 1015 | ctx->bio = bio; |
4c8ff709 | 1016 | ctx->sbi = sbi; |
6dbb1796 | 1017 | ctx->enabled_steps = post_read_steps; |
4931e0c9 | 1018 | ctx->fs_blkaddr = blkaddr; |
6dbb1796 | 1019 | bio->bi_private = ctx; |
6dbb1796 | 1020 | } |
a4b68176 | 1021 | iostat_alloc_and_bind_ctx(sbi, bio, ctx); |
6dbb1796 | 1022 | |
13ba41e3 JK |
1023 | return bio; |
1024 | } | |
1025 | ||
1026 | /* This can handle encryption stuffs */ | |
1027 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
b7973091 | 1028 | block_t blkaddr, int op_flags, bool for_write) |
13ba41e3 | 1029 | { |
93770ab7 CY |
1030 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1031 | struct bio *bio; | |
13ba41e3 | 1032 | |
b7973091 | 1033 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags, |
7f59b277 | 1034 | page->index, for_write); |
13ba41e3 JK |
1035 | if (IS_ERR(bio)) |
1036 | return PTR_ERR(bio); | |
1037 | ||
0ded69f6 JK |
1038 | /* wait for GCed page writeback via META_MAPPING */ |
1039 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
1040 | ||
13ba41e3 JK |
1041 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
1042 | bio_put(bio); | |
1043 | return -EFAULT; | |
1044 | } | |
fb7d70db | 1045 | ClearPageError(page); |
93770ab7 | 1046 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 1047 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
93770ab7 | 1048 | __submit_bio(sbi, bio, DATA); |
13ba41e3 JK |
1049 | return 0; |
1050 | } | |
1051 | ||
46008c6d CY |
1052 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
1053 | { | |
1054 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
1055 | __le32 *addr_array; | |
7a2af766 CY |
1056 | int base = 0; |
1057 | ||
1058 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
1059 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
1060 | |
1061 | /* Get physical address of data block */ | |
1062 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 1063 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
1064 | } |
1065 | ||
0a8165d7 | 1066 | /* |
eb47b800 JK |
1067 | * Lock ordering for the change of data block address: |
1068 | * ->data_page | |
1069 | * ->node_page | |
1070 | * update block addresses in the node page | |
1071 | */ | |
4d57b86d | 1072 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 1073 | { |
bae0ee7a | 1074 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1075 | __set_data_blkaddr(dn); |
1076 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 1077 | dn->node_changed = true; |
eb47b800 JK |
1078 | } |
1079 | ||
f28b3434 CY |
1080 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
1081 | { | |
1082 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 1083 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
1084 | f2fs_update_extent_cache(dn); |
1085 | } | |
1086 | ||
46008c6d | 1087 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 1088 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 1089 | { |
4081363f | 1090 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 1091 | int err; |
eb47b800 | 1092 | |
46008c6d CY |
1093 | if (!count) |
1094 | return 0; | |
1095 | ||
91942321 | 1096 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 1097 | return -EPERM; |
0abd675e CY |
1098 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1099 | return err; | |
eb47b800 | 1100 | |
46008c6d CY |
1101 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
1102 | dn->ofs_in_node, count); | |
1103 | ||
bae0ee7a | 1104 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1105 | |
1106 | for (; count > 0; dn->ofs_in_node++) { | |
a2ced1ce | 1107 | block_t blkaddr = f2fs_data_blkaddr(dn); |
5f029c04 | 1108 | |
46008c6d CY |
1109 | if (blkaddr == NULL_ADDR) { |
1110 | dn->data_blkaddr = NEW_ADDR; | |
1111 | __set_data_blkaddr(dn); | |
1112 | count--; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | if (set_page_dirty(dn->node_page)) | |
1117 | dn->node_changed = true; | |
eb47b800 JK |
1118 | return 0; |
1119 | } | |
1120 | ||
46008c6d | 1121 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 1122 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
1123 | { |
1124 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1125 | int ret; | |
1126 | ||
4d57b86d | 1127 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
1128 | dn->ofs_in_node = ofs_in_node; |
1129 | return ret; | |
1130 | } | |
1131 | ||
b600965c HL |
1132 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
1133 | { | |
1134 | bool need_put = dn->inode_page ? false : true; | |
1135 | int err; | |
1136 | ||
4d57b86d | 1137 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
1138 | if (err) |
1139 | return err; | |
a8865372 | 1140 | |
b600965c | 1141 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 1142 | err = f2fs_reserve_new_block(dn); |
a8865372 | 1143 | if (err || need_put) |
b600965c HL |
1144 | f2fs_put_dnode(dn); |
1145 | return err; | |
1146 | } | |
1147 | ||
759af1c9 | 1148 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 1149 | { |
94afd6d6 | 1150 | struct extent_info ei = {0, }; |
759af1c9 | 1151 | struct inode *inode = dn->inode; |
028a41e8 | 1152 | |
759af1c9 FL |
1153 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1154 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
1155 | return 0; | |
429511cd | 1156 | } |
028a41e8 | 1157 | |
759af1c9 | 1158 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
1159 | } |
1160 | ||
4d57b86d | 1161 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 1162 | int op_flags, bool for_write) |
eb47b800 | 1163 | { |
eb47b800 JK |
1164 | struct address_space *mapping = inode->i_mapping; |
1165 | struct dnode_of_data dn; | |
1166 | struct page *page; | |
94afd6d6 | 1167 | struct extent_info ei = {0, }; |
eb47b800 | 1168 | int err; |
4375a336 | 1169 | |
a56c7c6f | 1170 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
1171 | if (!page) |
1172 | return ERR_PTR(-ENOMEM); | |
1173 | ||
cb3bc9ee CY |
1174 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1175 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
93770ab7 CY |
1176 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
1177 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 1178 | err = -EFSCORRUPTED; |
93770ab7 CY |
1179 | goto put_err; |
1180 | } | |
cb3bc9ee CY |
1181 | goto got_it; |
1182 | } | |
1183 | ||
eb47b800 | 1184 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1185 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
1186 | if (err) |
1187 | goto put_err; | |
eb47b800 JK |
1188 | f2fs_put_dnode(&dn); |
1189 | ||
6bacf52f | 1190 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
1191 | err = -ENOENT; |
1192 | goto put_err; | |
650495de | 1193 | } |
93770ab7 CY |
1194 | if (dn.data_blkaddr != NEW_ADDR && |
1195 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
1196 | dn.data_blkaddr, | |
1197 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 1198 | err = -EFSCORRUPTED; |
93770ab7 CY |
1199 | goto put_err; |
1200 | } | |
cb3bc9ee | 1201 | got_it: |
43f3eae1 JK |
1202 | if (PageUptodate(page)) { |
1203 | unlock_page(page); | |
eb47b800 | 1204 | return page; |
43f3eae1 | 1205 | } |
eb47b800 | 1206 | |
d59ff4df JK |
1207 | /* |
1208 | * A new dentry page is allocated but not able to be written, since its | |
1209 | * new inode page couldn't be allocated due to -ENOSPC. | |
1210 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
1211 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
1212 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
1213 | */ |
1214 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1215 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1216 | if (!PageUptodate(page)) |
1217 | SetPageUptodate(page); | |
43f3eae1 | 1218 | unlock_page(page); |
d59ff4df JK |
1219 | return page; |
1220 | } | |
eb47b800 | 1221 | |
b7973091 JY |
1222 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr, |
1223 | op_flags, for_write); | |
393ff91f | 1224 | if (err) |
86531d6b | 1225 | goto put_err; |
43f3eae1 | 1226 | return page; |
86531d6b JK |
1227 | |
1228 | put_err: | |
1229 | f2fs_put_page(page, 1); | |
1230 | return ERR_PTR(err); | |
43f3eae1 JK |
1231 | } |
1232 | ||
4d57b86d | 1233 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
1234 | { |
1235 | struct address_space *mapping = inode->i_mapping; | |
1236 | struct page *page; | |
1237 | ||
1238 | page = find_get_page(mapping, index); | |
1239 | if (page && PageUptodate(page)) | |
1240 | return page; | |
1241 | f2fs_put_page(page, 0); | |
1242 | ||
4d57b86d | 1243 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
1244 | if (IS_ERR(page)) |
1245 | return page; | |
1246 | ||
1247 | if (PageUptodate(page)) | |
1248 | return page; | |
1249 | ||
1250 | wait_on_page_locked(page); | |
1251 | if (unlikely(!PageUptodate(page))) { | |
1252 | f2fs_put_page(page, 0); | |
1253 | return ERR_PTR(-EIO); | |
1254 | } | |
1255 | return page; | |
1256 | } | |
1257 | ||
1258 | /* | |
1259 | * If it tries to access a hole, return an error. | |
1260 | * Because, the callers, functions in dir.c and GC, should be able to know | |
1261 | * whether this page exists or not. | |
1262 | */ | |
4d57b86d | 1263 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 1264 | bool for_write) |
43f3eae1 JK |
1265 | { |
1266 | struct address_space *mapping = inode->i_mapping; | |
1267 | struct page *page; | |
1268 | repeat: | |
4d57b86d | 1269 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
1270 | if (IS_ERR(page)) |
1271 | return page; | |
393ff91f | 1272 | |
43f3eae1 | 1273 | /* wait for read completion */ |
393ff91f | 1274 | lock_page(page); |
6bacf52f | 1275 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
1276 | f2fs_put_page(page, 1); |
1277 | goto repeat; | |
eb47b800 | 1278 | } |
1563ac75 CY |
1279 | if (unlikely(!PageUptodate(page))) { |
1280 | f2fs_put_page(page, 1); | |
1281 | return ERR_PTR(-EIO); | |
1282 | } | |
eb47b800 JK |
1283 | return page; |
1284 | } | |
1285 | ||
0a8165d7 | 1286 | /* |
eb47b800 JK |
1287 | * Caller ensures that this data page is never allocated. |
1288 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 1289 | * |
4f4124d0 CY |
1290 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
1291 | * f2fs_unlock_op(). | |
470f00e9 CY |
1292 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
1293 | * ipage should be released by this function. | |
eb47b800 | 1294 | */ |
4d57b86d | 1295 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 1296 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 1297 | { |
eb47b800 JK |
1298 | struct address_space *mapping = inode->i_mapping; |
1299 | struct page *page; | |
1300 | struct dnode_of_data dn; | |
1301 | int err; | |
7612118a | 1302 | |
a56c7c6f | 1303 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
1304 | if (!page) { |
1305 | /* | |
1306 | * before exiting, we should make sure ipage will be released | |
1307 | * if any error occur. | |
1308 | */ | |
1309 | f2fs_put_page(ipage, 1); | |
01f28610 | 1310 | return ERR_PTR(-ENOMEM); |
470f00e9 | 1311 | } |
eb47b800 | 1312 | |
a8865372 | 1313 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 1314 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
1315 | if (err) { |
1316 | f2fs_put_page(page, 1); | |
eb47b800 | 1317 | return ERR_PTR(err); |
a8865372 | 1318 | } |
01f28610 JK |
1319 | if (!ipage) |
1320 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1321 | |
1322 | if (PageUptodate(page)) | |
01f28610 | 1323 | goto got_it; |
eb47b800 JK |
1324 | |
1325 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1326 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1327 | if (!PageUptodate(page)) |
1328 | SetPageUptodate(page); | |
eb47b800 | 1329 | } else { |
4375a336 | 1330 | f2fs_put_page(page, 1); |
a8865372 | 1331 | |
7612118a JK |
1332 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1333 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1334 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1335 | if (IS_ERR(page)) |
7612118a | 1336 | return page; |
eb47b800 | 1337 | } |
01f28610 | 1338 | got_it: |
9edcdabf | 1339 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1340 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1341 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1342 | return page; |
1343 | } | |
1344 | ||
d5097be5 | 1345 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1346 | { |
4081363f | 1347 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1348 | struct f2fs_summary sum; |
bfad7c2d | 1349 | struct node_info ni; |
6aa58d8a | 1350 | block_t old_blkaddr; |
46008c6d | 1351 | blkcnt_t count = 1; |
0abd675e | 1352 | int err; |
bfad7c2d | 1353 | |
91942321 | 1354 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1355 | return -EPERM; |
df6136ef | 1356 | |
a9419b63 | 1357 | err = f2fs_get_node_info(sbi, dn->nid, &ni, false); |
7735730d CY |
1358 | if (err) |
1359 | return err; | |
1360 | ||
a2ced1ce | 1361 | dn->data_blkaddr = f2fs_data_blkaddr(dn); |
f847c699 | 1362 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1363 | goto alloc; |
1364 | ||
0abd675e CY |
1365 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1366 | return err; | |
bfad7c2d | 1367 | |
df6136ef | 1368 | alloc: |
bfad7c2d | 1369 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1370 | old_blkaddr = dn->data_blkaddr; |
1371 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
093749e2 | 1372 | &sum, seg_type, NULL); |
6ce19aff | 1373 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
6aa58d8a CY |
1374 | invalidate_mapping_pages(META_MAPPING(sbi), |
1375 | old_blkaddr, old_blkaddr); | |
6ce19aff CY |
1376 | f2fs_invalidate_compress_page(sbi, old_blkaddr); |
1377 | } | |
86f35dc3 | 1378 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d JK |
1379 | return 0; |
1380 | } | |
1381 | ||
0ef81833 | 1382 | void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1383 | { |
1384 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1385 | if (lock) | |
1386 | down_read(&sbi->node_change); | |
1387 | else | |
1388 | up_read(&sbi->node_change); | |
1389 | } else { | |
1390 | if (lock) | |
1391 | f2fs_lock_op(sbi); | |
1392 | else | |
1393 | f2fs_unlock_op(sbi); | |
1394 | } | |
1395 | } | |
1396 | ||
0a8165d7 | 1397 | /* |
7a88ddb5 CY |
1398 | * f2fs_map_blocks() tries to find or build mapping relationship which |
1399 | * maps continuous logical blocks to physical blocks, and return such | |
1400 | * info via f2fs_map_blocks structure. | |
eb47b800 | 1401 | */ |
d323d005 | 1402 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1403 | int create, int flag) |
eb47b800 | 1404 | { |
003a3e1d | 1405 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1406 | struct dnode_of_data dn; |
f9811703 | 1407 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1408 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1409 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1410 | int err = 0, ofs = 1; |
46008c6d CY |
1411 | unsigned int ofs_in_node, last_ofs_in_node; |
1412 | blkcnt_t prealloc; | |
94afd6d6 | 1413 | struct extent_info ei = {0, }; |
7df3a431 | 1414 | block_t blkaddr; |
c4020b2d | 1415 | unsigned int start_pgofs; |
71f2c820 | 1416 | int bidx = 0; |
eb47b800 | 1417 | |
dfd02e4d CY |
1418 | if (!maxblocks) |
1419 | return 0; | |
1420 | ||
71f2c820 CY |
1421 | map->m_bdev = inode->i_sb->s_bdev; |
1422 | map->m_multidev_dio = | |
1423 | f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag); | |
1424 | ||
003a3e1d JK |
1425 | map->m_len = 0; |
1426 | map->m_flags = 0; | |
1427 | ||
1428 | /* it only supports block size == page size */ | |
1429 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1430 | end = pgofs + maxblocks; |
eb47b800 | 1431 | |
24b84912 | 1432 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
b0332a0f | 1433 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f4f0b677 JZ |
1434 | map->m_may_create) |
1435 | goto next_dnode; | |
1436 | ||
003a3e1d JK |
1437 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1438 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1439 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1440 | if (map->m_next_extent) |
1441 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1442 | |
1443 | /* for hardware encryption, but to avoid potential issue in future */ | |
1444 | if (flag == F2FS_GET_BLOCK_DIO) | |
1445 | f2fs_wait_on_block_writeback_range(inode, | |
1446 | map->m_pblk, map->m_len); | |
71f2c820 CY |
1447 | |
1448 | if (map->m_multidev_dio) { | |
1449 | block_t blk_addr = map->m_pblk; | |
1450 | ||
1451 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1452 | ||
1453 | map->m_bdev = FDEV(bidx).bdev; | |
1454 | map->m_pblk -= FDEV(bidx).start_blk; | |
1455 | map->m_len = min(map->m_len, | |
1456 | FDEV(bidx).end_blk + 1 - map->m_pblk); | |
1457 | ||
1458 | if (map->m_may_create) | |
1459 | f2fs_update_device_state(sbi, inode->i_ino, | |
1460 | blk_addr, map->m_len); | |
1461 | } | |
bfad7c2d | 1462 | goto out; |
a2e7d1bf | 1463 | } |
bfad7c2d | 1464 | |
4fe71e88 | 1465 | next_dnode: |
f9d6d059 | 1466 | if (map->m_may_create) |
0ef81833 | 1467 | f2fs_do_map_lock(sbi, flag, true); |
eb47b800 JK |
1468 | |
1469 | /* When reading holes, we need its node page */ | |
1470 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1471 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1472 | if (err) { |
43473f96 CY |
1473 | if (flag == F2FS_GET_BLOCK_BMAP) |
1474 | map->m_pblk = 0; | |
adf9ea89 | 1475 | |
da85985c | 1476 | if (err == -ENOENT) { |
adf9ea89 CY |
1477 | /* |
1478 | * There is one exceptional case that read_node_page() | |
1479 | * may return -ENOENT due to filesystem has been | |
1480 | * shutdown or cp_error, so force to convert error | |
1481 | * number to EIO for such case. | |
1482 | */ | |
1483 | if (map->m_may_create && | |
1484 | (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || | |
1485 | f2fs_cp_error(sbi))) { | |
1486 | err = -EIO; | |
1487 | goto unlock_out; | |
1488 | } | |
1489 | ||
bfad7c2d | 1490 | err = 0; |
da85985c CY |
1491 | if (map->m_next_pgofs) |
1492 | *map->m_next_pgofs = | |
4d57b86d | 1493 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1494 | if (map->m_next_extent) |
1495 | *map->m_next_extent = | |
4d57b86d | 1496 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1497 | } |
bfad7c2d | 1498 | goto unlock_out; |
848753aa | 1499 | } |
973163fc | 1500 | |
c4020b2d | 1501 | start_pgofs = pgofs; |
46008c6d | 1502 | prealloc = 0; |
230436b3 | 1503 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1504 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1505 | |
1506 | next_block: | |
a2ced1ce | 1507 | blkaddr = f2fs_data_blkaddr(&dn); |
4fe71e88 | 1508 | |
c9b60788 | 1509 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1510 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1511 | err = -EFSCORRUPTED; |
c9b60788 CY |
1512 | goto sync_out; |
1513 | } | |
1514 | ||
93770ab7 | 1515 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1516 | /* use out-place-update for driect IO under LFS mode */ |
b0332a0f | 1517 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f9d6d059 | 1518 | map->m_may_create) { |
f847c699 | 1519 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1520 | if (err) |
1521 | goto sync_out; | |
1522 | blkaddr = dn.data_blkaddr; | |
1523 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1524 | } |
1525 | } else { | |
973163fc | 1526 | if (create) { |
f9811703 CY |
1527 | if (unlikely(f2fs_cp_error(sbi))) { |
1528 | err = -EIO; | |
4fe71e88 | 1529 | goto sync_out; |
f9811703 | 1530 | } |
24b84912 | 1531 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1532 | if (blkaddr == NULL_ADDR) { |
1533 | prealloc++; | |
1534 | last_ofs_in_node = dn.ofs_in_node; | |
1535 | } | |
24b84912 | 1536 | } else { |
0a4daae5 JK |
1537 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1538 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1539 | err = __allocate_data_block(&dn, |
1540 | map->m_seg_type); | |
d4dd19ec JK |
1541 | if (!err) { |
1542 | if (flag == F2FS_GET_BLOCK_PRE_DIO) | |
1543 | file_need_truncate(inode); | |
91942321 | 1544 | set_inode_flag(inode, FI_APPEND_WRITE); |
d4dd19ec | 1545 | } |
24b84912 | 1546 | } |
973163fc | 1547 | if (err) |
4fe71e88 | 1548 | goto sync_out; |
3f2be043 | 1549 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1550 | blkaddr = dn.data_blkaddr; |
973163fc | 1551 | } else { |
bbe1da7e CY |
1552 | if (f2fs_compressed_file(inode) && |
1553 | f2fs_sanity_check_cluster(&dn) && | |
1554 | (flag != F2FS_GET_BLOCK_FIEMAP || | |
1555 | IS_ENABLED(CONFIG_F2FS_CHECK_FS))) { | |
1556 | err = -EFSCORRUPTED; | |
1557 | goto sync_out; | |
1558 | } | |
43473f96 CY |
1559 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1560 | map->m_pblk = 0; | |
1561 | goto sync_out; | |
1562 | } | |
c4020b2d CY |
1563 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1564 | goto sync_out; | |
da85985c CY |
1565 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1566 | blkaddr == NULL_ADDR) { | |
1567 | if (map->m_next_pgofs) | |
1568 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1569 | goto sync_out; |
da85985c | 1570 | } |
f3d98e74 CY |
1571 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1572 | /* for defragment case */ | |
1573 | if (map->m_next_pgofs) | |
1574 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1575 | goto sync_out; |
f3d98e74 | 1576 | } |
e2b4e2bc | 1577 | } |
e2b4e2bc | 1578 | } |
eb47b800 | 1579 | |
46008c6d CY |
1580 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1581 | goto skip; | |
1582 | ||
71f2c820 CY |
1583 | if (map->m_multidev_dio) |
1584 | bidx = f2fs_target_device_index(sbi, blkaddr); | |
1585 | ||
4fe71e88 CY |
1586 | if (map->m_len == 0) { |
1587 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1588 | if (blkaddr == NEW_ADDR) | |
1589 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1590 | map->m_flags |= F2FS_MAP_MAPPED; | |
1591 | ||
1592 | map->m_pblk = blkaddr; | |
1593 | map->m_len = 1; | |
71f2c820 CY |
1594 | |
1595 | if (map->m_multidev_dio) | |
1596 | map->m_bdev = FDEV(bidx).bdev; | |
4fe71e88 CY |
1597 | } else if ((map->m_pblk != NEW_ADDR && |
1598 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1599 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1600 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
71f2c820 CY |
1601 | if (map->m_multidev_dio && map->m_bdev != FDEV(bidx).bdev) |
1602 | goto sync_out; | |
4fe71e88 CY |
1603 | ofs++; |
1604 | map->m_len++; | |
1605 | } else { | |
1606 | goto sync_out; | |
1607 | } | |
bfad7c2d | 1608 | |
46008c6d | 1609 | skip: |
bfad7c2d JK |
1610 | dn.ofs_in_node++; |
1611 | pgofs++; | |
1612 | ||
46008c6d CY |
1613 | /* preallocate blocks in batch for one dnode page */ |
1614 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1615 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1616 | |
46008c6d | 1617 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1618 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1619 | if (err) |
1620 | goto sync_out; | |
bfad7c2d | 1621 | |
46008c6d CY |
1622 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1623 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1624 | err = -ENOSPC; | |
1625 | goto sync_out; | |
3104af35 | 1626 | } |
46008c6d CY |
1627 | dn.ofs_in_node = end_offset; |
1628 | } | |
1629 | ||
1630 | if (pgofs >= end) | |
1631 | goto sync_out; | |
1632 | else if (dn.ofs_in_node < end_offset) | |
1633 | goto next_block; | |
1634 | ||
c4020b2d CY |
1635 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1636 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1637 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1638 | ||
1639 | f2fs_update_extent_cache_range(&dn, | |
1640 | start_pgofs, map->m_pblk + ofs, | |
1641 | map->m_len - ofs); | |
1642 | } | |
1643 | } | |
1644 | ||
46008c6d CY |
1645 | f2fs_put_dnode(&dn); |
1646 | ||
f9d6d059 | 1647 | if (map->m_may_create) { |
0ef81833 | 1648 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1649 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1650 | } |
46008c6d | 1651 | goto next_dnode; |
7df3a431 | 1652 | |
bfad7c2d | 1653 | sync_out: |
1e78e8bd | 1654 | |
71f2c820 CY |
1655 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) { |
1656 | /* | |
1657 | * for hardware encryption, but to avoid potential issue | |
1658 | * in future | |
1659 | */ | |
1e78e8bd ST |
1660 | f2fs_wait_on_block_writeback_range(inode, |
1661 | map->m_pblk, map->m_len); | |
e3b49ea3 HJK |
1662 | invalidate_mapping_pages(META_MAPPING(sbi), |
1663 | map->m_pblk, map->m_pblk); | |
1e78e8bd | 1664 | |
71f2c820 CY |
1665 | if (map->m_multidev_dio) { |
1666 | block_t blk_addr = map->m_pblk; | |
1667 | ||
1668 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1669 | ||
1670 | map->m_bdev = FDEV(bidx).bdev; | |
1671 | map->m_pblk -= FDEV(bidx).start_blk; | |
1672 | ||
1673 | if (map->m_may_create) | |
1674 | f2fs_update_device_state(sbi, inode->i_ino, | |
1675 | blk_addr, map->m_len); | |
1676 | ||
1677 | f2fs_bug_on(sbi, blk_addr + map->m_len > | |
1678 | FDEV(bidx).end_blk + 1); | |
1679 | } | |
1680 | } | |
1681 | ||
c4020b2d CY |
1682 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1683 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1684 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1685 | ||
1686 | f2fs_update_extent_cache_range(&dn, | |
1687 | start_pgofs, map->m_pblk + ofs, | |
1688 | map->m_len - ofs); | |
1689 | } | |
1690 | if (map->m_next_extent) | |
1691 | *map->m_next_extent = pgofs + 1; | |
1692 | } | |
eb47b800 | 1693 | f2fs_put_dnode(&dn); |
bfad7c2d | 1694 | unlock_out: |
f9d6d059 | 1695 | if (map->m_may_create) { |
0ef81833 | 1696 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1697 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1698 | } |
bfad7c2d | 1699 | out: |
71f2c820 | 1700 | trace_f2fs_map_blocks(inode, map, create, flag, err); |
bfad7c2d | 1701 | return err; |
eb47b800 JK |
1702 | } |
1703 | ||
b91050a8 HL |
1704 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1705 | { | |
1706 | struct f2fs_map_blocks map; | |
1707 | block_t last_lblk; | |
1708 | int err; | |
1709 | ||
1710 | if (pos + len > i_size_read(inode)) | |
1711 | return false; | |
1712 | ||
1713 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1714 | map.m_next_pgofs = NULL; | |
1715 | map.m_next_extent = NULL; | |
1716 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1717 | map.m_may_create = false; |
b91050a8 HL |
1718 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1719 | ||
1720 | while (map.m_lblk < last_lblk) { | |
1721 | map.m_len = last_lblk - map.m_lblk; | |
1722 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1723 | if (err || map.m_len == 0) | |
1724 | return false; | |
1725 | map.m_lblk += map.m_len; | |
1726 | } | |
1727 | return true; | |
1728 | } | |
1729 | ||
43b9d4b4 JK |
1730 | static inline u64 bytes_to_blks(struct inode *inode, u64 bytes) |
1731 | { | |
1732 | return (bytes >> inode->i_blkbits); | |
1733 | } | |
1734 | ||
1735 | static inline u64 blks_to_bytes(struct inode *inode, u64 blks) | |
1736 | { | |
1737 | return (blks << inode->i_blkbits); | |
1738 | } | |
1739 | ||
442a9dbd CY |
1740 | static int f2fs_xattr_fiemap(struct inode *inode, |
1741 | struct fiemap_extent_info *fieinfo) | |
1742 | { | |
1743 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1744 | struct page *page; | |
1745 | struct node_info ni; | |
1746 | __u64 phys = 0, len; | |
1747 | __u32 flags; | |
1748 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1749 | int err = 0; | |
1750 | ||
1751 | if (f2fs_has_inline_xattr(inode)) { | |
1752 | int offset; | |
1753 | ||
1754 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1755 | inode->i_ino, false); | |
1756 | if (!page) | |
1757 | return -ENOMEM; | |
1758 | ||
a9419b63 | 1759 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); |
7735730d CY |
1760 | if (err) { |
1761 | f2fs_put_page(page, 1); | |
1762 | return err; | |
1763 | } | |
442a9dbd | 1764 | |
6cbfcab5 | 1765 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1766 | offset = offsetof(struct f2fs_inode, i_addr) + |
1767 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1768 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1769 | |
1770 | phys += offset; | |
1771 | len = inline_xattr_size(inode); | |
1772 | ||
1773 | f2fs_put_page(page, 1); | |
1774 | ||
1775 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1776 | ||
1777 | if (!xnid) | |
1778 | flags |= FIEMAP_EXTENT_LAST; | |
1779 | ||
1780 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
dd5a09bd | 1781 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
442a9dbd CY |
1782 | if (err || err == 1) |
1783 | return err; | |
1784 | } | |
1785 | ||
1786 | if (xnid) { | |
1787 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1788 | if (!page) | |
1789 | return -ENOMEM; | |
1790 | ||
a9419b63 | 1791 | err = f2fs_get_node_info(sbi, xnid, &ni, false); |
7735730d CY |
1792 | if (err) { |
1793 | f2fs_put_page(page, 1); | |
1794 | return err; | |
1795 | } | |
442a9dbd | 1796 | |
6cbfcab5 | 1797 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1798 | len = inode->i_sb->s_blocksize; |
1799 | ||
1800 | f2fs_put_page(page, 1); | |
1801 | ||
1802 | flags = FIEMAP_EXTENT_LAST; | |
1803 | } | |
1804 | ||
dd5a09bd | 1805 | if (phys) { |
442a9dbd | 1806 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); |
dd5a09bd CY |
1807 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
1808 | } | |
442a9dbd CY |
1809 | |
1810 | return (err < 0 ? err : 0); | |
1811 | } | |
1812 | ||
bf38fbad CY |
1813 | static loff_t max_inode_blocks(struct inode *inode) |
1814 | { | |
1815 | loff_t result = ADDRS_PER_INODE(inode); | |
1816 | loff_t leaf_count = ADDRS_PER_BLOCK(inode); | |
1817 | ||
1818 | /* two direct node blocks */ | |
1819 | result += (leaf_count * 2); | |
1820 | ||
1821 | /* two indirect node blocks */ | |
1822 | leaf_count *= NIDS_PER_BLOCK; | |
1823 | result += (leaf_count * 2); | |
1824 | ||
1825 | /* one double indirect node block */ | |
1826 | leaf_count *= NIDS_PER_BLOCK; | |
1827 | result += leaf_count; | |
1828 | ||
1829 | return result; | |
1830 | } | |
1831 | ||
9ab70134 JK |
1832 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1833 | u64 start, u64 len) | |
1834 | { | |
b876f4c9 | 1835 | struct f2fs_map_blocks map; |
7f63eb77 | 1836 | sector_t start_blk, last_blk; |
da85985c | 1837 | pgoff_t next_pgofs; |
7f63eb77 JK |
1838 | u64 logical = 0, phys = 0, size = 0; |
1839 | u32 flags = 0; | |
7f63eb77 | 1840 | int ret = 0; |
093f0bac | 1841 | bool compr_cluster = false, compr_appended; |
bf38fbad | 1842 | unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; |
093f0bac | 1843 | unsigned int count_in_cluster = 0; |
0bb2045c | 1844 | loff_t maxbytes; |
7f63eb77 | 1845 | |
c4020b2d CY |
1846 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1847 | ret = f2fs_precache_extents(inode); | |
1848 | if (ret) | |
1849 | return ret; | |
1850 | } | |
1851 | ||
45dd052e | 1852 | ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1853 | if (ret) |
1854 | return ret; | |
1855 | ||
f1b43d4c CY |
1856 | inode_lock(inode); |
1857 | ||
0bb2045c CX |
1858 | maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS; |
1859 | if (start > maxbytes) { | |
1860 | ret = -EFBIG; | |
1861 | goto out; | |
1862 | } | |
1863 | ||
1864 | if (len > maxbytes || (maxbytes - len) < start) | |
1865 | len = maxbytes - start; | |
1866 | ||
442a9dbd CY |
1867 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1868 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1869 | goto out; | |
1870 | } | |
1871 | ||
7975f349 | 1872 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1873 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1874 | if (ret != -EAGAIN) | |
f1b43d4c | 1875 | goto out; |
67f8cf3c JK |
1876 | } |
1877 | ||
6cbfcab5 JK |
1878 | if (bytes_to_blks(inode, len) == 0) |
1879 | len = blks_to_bytes(inode, 1); | |
7f63eb77 | 1880 | |
6cbfcab5 JK |
1881 | start_blk = bytes_to_blks(inode, start); |
1882 | last_blk = bytes_to_blks(inode, start + len - 1); | |
9a950d52 | 1883 | |
7f63eb77 | 1884 | next: |
b876f4c9 JK |
1885 | memset(&map, 0, sizeof(map)); |
1886 | map.m_lblk = start_blk; | |
1887 | map.m_len = bytes_to_blks(inode, len); | |
1888 | map.m_next_pgofs = &next_pgofs; | |
1889 | map.m_seg_type = NO_CHECK_TYPE; | |
7f63eb77 | 1890 | |
093f0bac DJ |
1891 | if (compr_cluster) { |
1892 | map.m_lblk += 1; | |
1893 | map.m_len = cluster_size - count_in_cluster; | |
1894 | } | |
bf38fbad | 1895 | |
b876f4c9 | 1896 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
7f63eb77 JK |
1897 | if (ret) |
1898 | goto out; | |
1899 | ||
1900 | /* HOLE */ | |
093f0bac | 1901 | if (!compr_cluster && !(map.m_flags & F2FS_MAP_FLAGS)) { |
da85985c | 1902 | start_blk = next_pgofs; |
58736fa6 | 1903 | |
6cbfcab5 | 1904 | if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode, |
bf38fbad | 1905 | max_inode_blocks(inode))) |
9a950d52 | 1906 | goto prep_next; |
58736fa6 | 1907 | |
9a950d52 FL |
1908 | flags |= FIEMAP_EXTENT_LAST; |
1909 | } | |
7f63eb77 | 1910 | |
093f0bac DJ |
1911 | compr_appended = false; |
1912 | /* In a case of compressed cluster, append this to the last extent */ | |
1913 | if (compr_cluster && ((map.m_flags & F2FS_MAP_UNWRITTEN) || | |
1914 | !(map.m_flags & F2FS_MAP_FLAGS))) { | |
1915 | compr_appended = true; | |
1916 | goto skip_fill; | |
1917 | } | |
1918 | ||
da5af127 | 1919 | if (size) { |
0953fe86 | 1920 | flags |= FIEMAP_EXTENT_MERGED; |
62230e0d | 1921 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1922 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1923 | ||
9a950d52 FL |
1924 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1925 | phys, size, flags); | |
dd5a09bd | 1926 | trace_f2fs_fiemap(inode, logical, phys, size, flags, ret); |
bf38fbad CY |
1927 | if (ret) |
1928 | goto out; | |
1929 | size = 0; | |
da5af127 | 1930 | } |
7f63eb77 | 1931 | |
bf38fbad | 1932 | if (start_blk > last_blk) |
9a950d52 | 1933 | goto out; |
7f63eb77 | 1934 | |
093f0bac | 1935 | skip_fill: |
b876f4c9 | 1936 | if (map.m_pblk == COMPRESS_ADDR) { |
bf38fbad | 1937 | compr_cluster = true; |
093f0bac DJ |
1938 | count_in_cluster = 1; |
1939 | } else if (compr_appended) { | |
1940 | unsigned int appended_blks = cluster_size - | |
1941 | count_in_cluster + 1; | |
1942 | size += blks_to_bytes(inode, appended_blks); | |
1943 | start_blk += appended_blks; | |
1944 | compr_cluster = false; | |
1945 | } else { | |
1946 | logical = blks_to_bytes(inode, start_blk); | |
1947 | phys = __is_valid_data_blkaddr(map.m_pblk) ? | |
1948 | blks_to_bytes(inode, map.m_pblk) : 0; | |
1949 | size = blks_to_bytes(inode, map.m_len); | |
1950 | flags = 0; | |
1951 | ||
1952 | if (compr_cluster) { | |
1953 | flags = FIEMAP_EXTENT_ENCODED; | |
1954 | count_in_cluster += map.m_len; | |
1955 | if (count_in_cluster == cluster_size) { | |
1956 | compr_cluster = false; | |
1957 | size += blks_to_bytes(inode, 1); | |
1958 | } | |
1959 | } else if (map.m_flags & F2FS_MAP_UNWRITTEN) { | |
1960 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
1961 | } | |
7f63eb77 | 1962 | |
093f0bac DJ |
1963 | start_blk += bytes_to_blks(inode, size); |
1964 | } | |
7f63eb77 | 1965 | |
9a950d52 | 1966 | prep_next: |
7f63eb77 JK |
1967 | cond_resched(); |
1968 | if (fatal_signal_pending(current)) | |
1969 | ret = -EINTR; | |
1970 | else | |
1971 | goto next; | |
1972 | out: | |
1973 | if (ret == 1) | |
1974 | ret = 0; | |
1975 | ||
5955102c | 1976 | inode_unlock(inode); |
7f63eb77 | 1977 | return ret; |
9ab70134 JK |
1978 | } |
1979 | ||
95ae251f EB |
1980 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
1981 | { | |
1982 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
1983 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
1984 | return inode->i_sb->s_maxbytes; | |
1985 | ||
1986 | return i_size_read(inode); | |
1987 | } | |
1988 | ||
2df0ab04 CY |
1989 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
1990 | unsigned nr_pages, | |
1991 | struct f2fs_map_blocks *map, | |
1992 | struct bio **bio_ret, | |
1993 | sector_t *last_block_in_bio, | |
1994 | bool is_readahead) | |
1995 | { | |
1996 | struct bio *bio = *bio_ret; | |
43b9d4b4 | 1997 | const unsigned blocksize = blks_to_bytes(inode, 1); |
2df0ab04 CY |
1998 | sector_t block_in_file; |
1999 | sector_t last_block; | |
2000 | sector_t last_block_in_file; | |
2001 | sector_t block_nr; | |
2002 | int ret = 0; | |
2003 | ||
4969c06a | 2004 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 2005 | last_block = block_in_file + nr_pages; |
43b9d4b4 JK |
2006 | last_block_in_file = bytes_to_blks(inode, |
2007 | f2fs_readpage_limit(inode) + blocksize - 1); | |
2df0ab04 CY |
2008 | if (last_block > last_block_in_file) |
2009 | last_block = last_block_in_file; | |
2010 | ||
2011 | /* just zeroing out page which is beyond EOF */ | |
2012 | if (block_in_file >= last_block) | |
2013 | goto zero_out; | |
2014 | /* | |
2015 | * Map blocks using the previous result first. | |
2016 | */ | |
2017 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
2018 | block_in_file > map->m_lblk && | |
2019 | block_in_file < (map->m_lblk + map->m_len)) | |
2020 | goto got_it; | |
2021 | ||
2022 | /* | |
2023 | * Then do more f2fs_map_blocks() calls until we are | |
2024 | * done with this page. | |
2025 | */ | |
2026 | map->m_lblk = block_in_file; | |
2027 | map->m_len = last_block - block_in_file; | |
2028 | ||
2029 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
2030 | if (ret) | |
2031 | goto out; | |
2032 | got_it: | |
2033 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
2034 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
2035 | SetPageMappedToDisk(page); | |
2036 | ||
2df0ab04 | 2037 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, |
93770ab7 | 2038 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 2039 | ret = -EFSCORRUPTED; |
2df0ab04 CY |
2040 | goto out; |
2041 | } | |
2042 | } else { | |
2043 | zero_out: | |
2044 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
2045 | if (f2fs_need_verity(inode, page->index) && |
2046 | !fsverity_verify_page(page)) { | |
2047 | ret = -EIO; | |
2048 | goto out; | |
2049 | } | |
2df0ab04 CY |
2050 | if (!PageUptodate(page)) |
2051 | SetPageUptodate(page); | |
2052 | unlock_page(page); | |
2053 | goto out; | |
2054 | } | |
2055 | ||
2056 | /* | |
2057 | * This page will go to BIO. Do we need to send this | |
2058 | * BIO off first? | |
2059 | */ | |
27aacd28 ST |
2060 | if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio, |
2061 | *last_block_in_bio, block_nr) || | |
2062 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
2df0ab04 CY |
2063 | submit_and_realloc: |
2064 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2065 | bio = NULL; | |
2066 | } | |
2067 | if (bio == NULL) { | |
2068 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
0683728a | 2069 | is_readahead ? REQ_RAHEAD : 0, page->index, |
7f59b277 | 2070 | false); |
2df0ab04 CY |
2071 | if (IS_ERR(bio)) { |
2072 | ret = PTR_ERR(bio); | |
2073 | bio = NULL; | |
2074 | goto out; | |
2075 | } | |
2076 | } | |
2077 | ||
2078 | /* | |
2079 | * If the page is under writeback, we need to wait for | |
2080 | * its completion to see the correct decrypted data. | |
2081 | */ | |
2082 | f2fs_wait_on_block_writeback(inode, block_nr); | |
2083 | ||
2084 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2085 | goto submit_and_realloc; | |
2086 | ||
2087 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
8b83ac81 | 2088 | f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE); |
2df0ab04 CY |
2089 | ClearPageError(page); |
2090 | *last_block_in_bio = block_nr; | |
2091 | goto out; | |
2df0ab04 CY |
2092 | out: |
2093 | *bio_ret = bio; | |
2094 | return ret; | |
2095 | } | |
2096 | ||
4c8ff709 CY |
2097 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2098 | int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, | |
2099 | unsigned nr_pages, sector_t *last_block_in_bio, | |
0683728a | 2100 | bool is_readahead, bool for_write) |
4c8ff709 CY |
2101 | { |
2102 | struct dnode_of_data dn; | |
2103 | struct inode *inode = cc->inode; | |
2104 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2105 | struct bio *bio = *bio_ret; | |
2106 | unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; | |
2107 | sector_t last_block_in_file; | |
43b9d4b4 | 2108 | const unsigned blocksize = blks_to_bytes(inode, 1); |
4c8ff709 | 2109 | struct decompress_io_ctx *dic = NULL; |
94afd6d6 CY |
2110 | struct extent_info ei = {0, }; |
2111 | bool from_dnode = true; | |
4c8ff709 CY |
2112 | int i; |
2113 | int ret = 0; | |
2114 | ||
2115 | f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); | |
2116 | ||
43b9d4b4 JK |
2117 | last_block_in_file = bytes_to_blks(inode, |
2118 | f2fs_readpage_limit(inode) + blocksize - 1); | |
4c8ff709 CY |
2119 | |
2120 | /* get rid of pages beyond EOF */ | |
2121 | for (i = 0; i < cc->cluster_size; i++) { | |
2122 | struct page *page = cc->rpages[i]; | |
2123 | ||
2124 | if (!page) | |
2125 | continue; | |
2126 | if ((sector_t)page->index >= last_block_in_file) { | |
2127 | zero_user_segment(page, 0, PAGE_SIZE); | |
2128 | if (!PageUptodate(page)) | |
2129 | SetPageUptodate(page); | |
2130 | } else if (!PageUptodate(page)) { | |
2131 | continue; | |
2132 | } | |
2133 | unlock_page(page); | |
9605f75c JK |
2134 | if (for_write) |
2135 | put_page(page); | |
4c8ff709 CY |
2136 | cc->rpages[i] = NULL; |
2137 | cc->nr_rpages--; | |
2138 | } | |
2139 | ||
2140 | /* we are done since all pages are beyond EOF */ | |
2141 | if (f2fs_cluster_is_empty(cc)) | |
2142 | goto out; | |
2143 | ||
94afd6d6 CY |
2144 | if (f2fs_lookup_extent_cache(inode, start_idx, &ei)) |
2145 | from_dnode = false; | |
2146 | ||
2147 | if (!from_dnode) | |
2148 | goto skip_reading_dnode; | |
2149 | ||
4c8ff709 CY |
2150 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
2151 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
2152 | if (ret) | |
2153 | goto out; | |
2154 | ||
a86d27dd | 2155 | f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); |
4c8ff709 | 2156 | |
94afd6d6 | 2157 | skip_reading_dnode: |
4c8ff709 CY |
2158 | for (i = 1; i < cc->cluster_size; i++) { |
2159 | block_t blkaddr; | |
2160 | ||
94afd6d6 CY |
2161 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2162 | dn.ofs_in_node + i) : | |
2163 | ei.blk + i - 1; | |
4c8ff709 CY |
2164 | |
2165 | if (!__is_valid_data_blkaddr(blkaddr)) | |
2166 | break; | |
2167 | ||
2168 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
2169 | ret = -EFAULT; | |
2170 | goto out_put_dnode; | |
2171 | } | |
2172 | cc->nr_cpages++; | |
94afd6d6 CY |
2173 | |
2174 | if (!from_dnode && i >= ei.c_len) | |
2175 | break; | |
4c8ff709 CY |
2176 | } |
2177 | ||
2178 | /* nothing to decompress */ | |
2179 | if (cc->nr_cpages == 0) { | |
2180 | ret = 0; | |
2181 | goto out_put_dnode; | |
2182 | } | |
2183 | ||
2184 | dic = f2fs_alloc_dic(cc); | |
2185 | if (IS_ERR(dic)) { | |
2186 | ret = PTR_ERR(dic); | |
2187 | goto out_put_dnode; | |
2188 | } | |
2189 | ||
6ce19aff | 2190 | for (i = 0; i < cc->nr_cpages; i++) { |
4c8ff709 CY |
2191 | struct page *page = dic->cpages[i]; |
2192 | block_t blkaddr; | |
7f59b277 | 2193 | struct bio_post_read_ctx *ctx; |
4c8ff709 | 2194 | |
94afd6d6 CY |
2195 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2196 | dn.ofs_in_node + i + 1) : | |
2197 | ei.blk + i; | |
4c8ff709 | 2198 | |
6ce19aff CY |
2199 | f2fs_wait_on_block_writeback(inode, blkaddr); |
2200 | ||
2201 | if (f2fs_load_compressed_page(sbi, page, blkaddr)) { | |
2202 | if (atomic_dec_and_test(&dic->remaining_pages)) | |
2203 | f2fs_decompress_cluster(dic); | |
2204 | continue; | |
2205 | } | |
2206 | ||
27aacd28 ST |
2207 | if (bio && (!page_is_mergeable(sbi, bio, |
2208 | *last_block_in_bio, blkaddr) || | |
2209 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
4c8ff709 CY |
2210 | submit_and_realloc: |
2211 | __submit_bio(sbi, bio, DATA); | |
2212 | bio = NULL; | |
2213 | } | |
2214 | ||
2215 | if (!bio) { | |
2216 | bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, | |
2217 | is_readahead ? REQ_RAHEAD : 0, | |
7f59b277 | 2218 | page->index, for_write); |
4c8ff709 CY |
2219 | if (IS_ERR(bio)) { |
2220 | ret = PTR_ERR(bio); | |
7f59b277 | 2221 | f2fs_decompress_end_io(dic, ret); |
4c8ff709 | 2222 | f2fs_put_dnode(&dn); |
f3494345 | 2223 | *bio_ret = NULL; |
4c8ff709 CY |
2224 | return ret; |
2225 | } | |
2226 | } | |
2227 | ||
4c8ff709 CY |
2228 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
2229 | goto submit_and_realloc; | |
2230 | ||
a4b68176 | 2231 | ctx = get_post_read_ctx(bio); |
7f59b277 EB |
2232 | ctx->enabled_steps |= STEP_DECOMPRESS; |
2233 | refcount_inc(&dic->refcnt); | |
03382f1a | 2234 | |
4c8ff709 | 2235 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 2236 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
9c122384 | 2237 | f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE); |
4c8ff709 CY |
2238 | ClearPageError(page); |
2239 | *last_block_in_bio = blkaddr; | |
2240 | } | |
2241 | ||
94afd6d6 CY |
2242 | if (from_dnode) |
2243 | f2fs_put_dnode(&dn); | |
4c8ff709 CY |
2244 | |
2245 | *bio_ret = bio; | |
2246 | return 0; | |
2247 | ||
2248 | out_put_dnode: | |
94afd6d6 CY |
2249 | if (from_dnode) |
2250 | f2fs_put_dnode(&dn); | |
4c8ff709 | 2251 | out: |
7f59b277 EB |
2252 | for (i = 0; i < cc->cluster_size; i++) { |
2253 | if (cc->rpages[i]) { | |
2254 | ClearPageUptodate(cc->rpages[i]); | |
2255 | ClearPageError(cc->rpages[i]); | |
2256 | unlock_page(cc->rpages[i]); | |
2257 | } | |
2258 | } | |
4c8ff709 CY |
2259 | *bio_ret = bio; |
2260 | return ret; | |
2261 | } | |
2262 | #endif | |
2263 | ||
f1e88660 JK |
2264 | /* |
2265 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
2266 | * Major change was from block_size == page_size in f2fs by default. | |
2267 | */ | |
e20a7693 | 2268 | static int f2fs_mpage_readpages(struct inode *inode, |
23323196 | 2269 | struct readahead_control *rac, struct page *page) |
f1e88660 JK |
2270 | { |
2271 | struct bio *bio = NULL; | |
f1e88660 | 2272 | sector_t last_block_in_bio = 0; |
f1e88660 | 2273 | struct f2fs_map_blocks map; |
4c8ff709 CY |
2274 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2275 | struct compress_ctx cc = { | |
2276 | .inode = inode, | |
2277 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2278 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2279 | .cluster_idx = NULL_CLUSTER, | |
2280 | .rpages = NULL, | |
2281 | .cpages = NULL, | |
2282 | .nr_rpages = 0, | |
2283 | .nr_cpages = 0, | |
2284 | }; | |
a2649315 | 2285 | pgoff_t nc_cluster_idx = NULL_CLUSTER; |
4c8ff709 | 2286 | #endif |
23323196 | 2287 | unsigned nr_pages = rac ? readahead_count(rac) : 1; |
4c8ff709 | 2288 | unsigned max_nr_pages = nr_pages; |
2df0ab04 | 2289 | int ret = 0; |
f1e88660 JK |
2290 | |
2291 | map.m_pblk = 0; | |
2292 | map.m_lblk = 0; | |
2293 | map.m_len = 0; | |
2294 | map.m_flags = 0; | |
da85985c | 2295 | map.m_next_pgofs = NULL; |
c4020b2d | 2296 | map.m_next_extent = NULL; |
d5097be5 | 2297 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 2298 | map.m_may_create = false; |
f1e88660 | 2299 | |
736c0a74 | 2300 | for (; nr_pages; nr_pages--) { |
23323196 MWO |
2301 | if (rac) { |
2302 | page = readahead_page(rac); | |
a83d50bc | 2303 | prefetchw(&page->flags); |
f1e88660 JK |
2304 | } |
2305 | ||
4c8ff709 CY |
2306 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2307 | if (f2fs_compressed_file(inode)) { | |
2308 | /* there are remained comressed pages, submit them */ | |
2309 | if (!f2fs_cluster_can_merge_page(&cc, page->index)) { | |
2310 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2311 | max_nr_pages, | |
2312 | &last_block_in_bio, | |
23323196 | 2313 | rac != NULL, false); |
8bfbfb0d | 2314 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2315 | if (ret) |
2316 | goto set_error_page; | |
2317 | } | |
a2649315 FC |
2318 | if (cc.cluster_idx == NULL_CLUSTER) { |
2319 | if (nc_cluster_idx == | |
2320 | page->index >> cc.log_cluster_size) { | |
2321 | goto read_single_page; | |
2322 | } | |
4c8ff709 | 2323 | |
a2649315 FC |
2324 | ret = f2fs_is_compressed_cluster(inode, page->index); |
2325 | if (ret < 0) | |
2326 | goto set_error_page; | |
2327 | else if (!ret) { | |
2328 | nc_cluster_idx = | |
2329 | page->index >> cc.log_cluster_size; | |
2330 | goto read_single_page; | |
2331 | } | |
4c8ff709 | 2332 | |
a2649315 FC |
2333 | nc_cluster_idx = NULL_CLUSTER; |
2334 | } | |
4c8ff709 CY |
2335 | ret = f2fs_init_compress_ctx(&cc); |
2336 | if (ret) | |
2337 | goto set_error_page; | |
2338 | ||
2339 | f2fs_compress_ctx_add_page(&cc, page); | |
2340 | ||
2341 | goto next_page; | |
2342 | } | |
2343 | read_single_page: | |
2344 | #endif | |
2345 | ||
2346 | ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, | |
23323196 | 2347 | &bio, &last_block_in_bio, rac); |
2df0ab04 | 2348 | if (ret) { |
4c8ff709 CY |
2349 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2350 | set_error_page: | |
2351 | #endif | |
2df0ab04 | 2352 | SetPageError(page); |
09cbfeaf | 2353 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 2354 | unlock_page(page); |
f1e88660 | 2355 | } |
23323196 | 2356 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
f1e88660 | 2357 | next_page: |
23323196 MWO |
2358 | #endif |
2359 | if (rac) | |
09cbfeaf | 2360 | put_page(page); |
4c8ff709 CY |
2361 | |
2362 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2363 | if (f2fs_compressed_file(inode)) { | |
2364 | /* last page */ | |
2365 | if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) { | |
2366 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2367 | max_nr_pages, | |
2368 | &last_block_in_bio, | |
23323196 | 2369 | rac != NULL, false); |
8bfbfb0d | 2370 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2371 | } |
2372 | } | |
2373 | #endif | |
f1e88660 | 2374 | } |
f1e88660 | 2375 | if (bio) |
4fc29c1a | 2376 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
23323196 | 2377 | return ret; |
f1e88660 JK |
2378 | } |
2379 | ||
eb47b800 JK |
2380 | static int f2fs_read_data_page(struct file *file, struct page *page) |
2381 | { | |
4969c06a | 2382 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 2383 | int ret = -EAGAIN; |
9ffe0fb5 | 2384 | |
c20e89cd CY |
2385 | trace_f2fs_readpage(page, DATA); |
2386 | ||
4c8ff709 CY |
2387 | if (!f2fs_is_compress_backend_ready(inode)) { |
2388 | unlock_page(page); | |
2389 | return -EOPNOTSUPP; | |
2390 | } | |
2391 | ||
e1c42045 | 2392 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
2393 | if (f2fs_has_inline_data(inode)) |
2394 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 2395 | if (ret == -EAGAIN) |
e20a7693 | 2396 | ret = f2fs_mpage_readpages(inode, NULL, page); |
9ffe0fb5 | 2397 | return ret; |
eb47b800 JK |
2398 | } |
2399 | ||
23323196 | 2400 | static void f2fs_readahead(struct readahead_control *rac) |
eb47b800 | 2401 | { |
23323196 | 2402 | struct inode *inode = rac->mapping->host; |
b8c29400 | 2403 | |
23323196 | 2404 | trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac)); |
9ffe0fb5 | 2405 | |
4c8ff709 | 2406 | if (!f2fs_is_compress_backend_ready(inode)) |
23323196 | 2407 | return; |
4c8ff709 | 2408 | |
9ffe0fb5 HL |
2409 | /* If the file has inline data, skip readpages */ |
2410 | if (f2fs_has_inline_data(inode)) | |
23323196 | 2411 | return; |
9ffe0fb5 | 2412 | |
e20a7693 | 2413 | f2fs_mpage_readpages(inode, rac, NULL); |
eb47b800 JK |
2414 | } |
2415 | ||
4c8ff709 | 2416 | int f2fs_encrypt_one_page(struct f2fs_io_info *fio) |
7eab0c0d HP |
2417 | { |
2418 | struct inode *inode = fio->page->mapping->host; | |
4c8ff709 | 2419 | struct page *mpage, *page; |
7eab0c0d HP |
2420 | gfp_t gfp_flags = GFP_NOFS; |
2421 | ||
1958593e | 2422 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
2423 | return 0; |
2424 | ||
4c8ff709 CY |
2425 | page = fio->compressed_page ? fio->compressed_page : fio->page; |
2426 | ||
6dbb1796 | 2427 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 2428 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d | 2429 | |
27aacd28 ST |
2430 | if (fscrypt_inode_uses_inline_crypto(inode)) |
2431 | return 0; | |
2432 | ||
7eab0c0d | 2433 | retry_encrypt: |
4c8ff709 CY |
2434 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, |
2435 | PAGE_SIZE, 0, gfp_flags); | |
6aa58d8a CY |
2436 | if (IS_ERR(fio->encrypted_page)) { |
2437 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
2438 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
2439 | f2fs_flush_merged_writes(fio->sbi); | |
4034247a | 2440 | memalloc_retry_wait(GFP_NOFS); |
6aa58d8a CY |
2441 | gfp_flags |= __GFP_NOFAIL; |
2442 | goto retry_encrypt; | |
2443 | } | |
2444 | return PTR_ERR(fio->encrypted_page); | |
2445 | } | |
7eab0c0d | 2446 | |
6aa58d8a CY |
2447 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
2448 | if (mpage) { | |
2449 | if (PageUptodate(mpage)) | |
2450 | memcpy(page_address(mpage), | |
2451 | page_address(fio->encrypted_page), PAGE_SIZE); | |
2452 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 2453 | } |
6aa58d8a | 2454 | return 0; |
7eab0c0d HP |
2455 | } |
2456 | ||
bb9e3bb8 CY |
2457 | static inline bool check_inplace_update_policy(struct inode *inode, |
2458 | struct f2fs_io_info *fio) | |
7eab0c0d | 2459 | { |
bb9e3bb8 CY |
2460 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2461 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 2462 | |
bb9e3bb8 CY |
2463 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
2464 | return true; | |
4d57b86d | 2465 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
2466 | return true; |
2467 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
2468 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
2469 | return true; | |
4d57b86d | 2470 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
2471 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
2472 | return true; | |
2473 | ||
2474 | /* | |
2475 | * IPU for rewrite async pages | |
2476 | */ | |
2477 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
2478 | fio && fio->op == REQ_OP_WRITE && | |
2479 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 2480 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
2481 | return true; |
2482 | ||
2483 | /* this is only set during fdatasync */ | |
2484 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
2485 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
2486 | return true; | |
2487 | ||
4354994f DR |
2488 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2489 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2490 | return true; | |
2491 | ||
bb9e3bb8 CY |
2492 | return false; |
2493 | } | |
2494 | ||
4d57b86d | 2495 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 2496 | { |
859fca6b CY |
2497 | /* swap file is migrating in aligned write mode */ |
2498 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2499 | return false; | |
2500 | ||
1ad71a27 JK |
2501 | if (f2fs_is_pinned_file(inode)) |
2502 | return true; | |
bb9e3bb8 CY |
2503 | |
2504 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
2505 | if (file_is_cold(inode)) | |
2506 | return true; | |
2507 | ||
2508 | return check_inplace_update_policy(inode, fio); | |
2509 | } | |
2510 | ||
4d57b86d | 2511 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
2512 | { |
2513 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2514 | ||
19bdba52 JK |
2515 | /* The below cases were checked when setting it. */ |
2516 | if (f2fs_is_pinned_file(inode)) | |
2517 | return false; | |
2518 | if (fio && is_sbi_flag_set(sbi, SBI_NEED_FSCK)) | |
2519 | return true; | |
b0332a0f | 2520 | if (f2fs_lfs_mode(sbi)) |
bb9e3bb8 CY |
2521 | return true; |
2522 | if (S_ISDIR(inode->i_mode)) | |
2523 | return true; | |
af033b2a CY |
2524 | if (IS_NOQUOTA(inode)) |
2525 | return true; | |
bb9e3bb8 CY |
2526 | if (f2fs_is_atomic_file(inode)) |
2527 | return true; | |
859fca6b CY |
2528 | |
2529 | /* swap file is migrating in aligned write mode */ | |
2530 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2531 | return true; | |
2532 | ||
bb9e3bb8 | 2533 | if (fio) { |
b763f3be | 2534 | if (page_private_gcing(fio->page)) |
bb9e3bb8 | 2535 | return true; |
b763f3be | 2536 | if (page_private_dummy(fio->page)) |
bb9e3bb8 | 2537 | return true; |
4354994f DR |
2538 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2539 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2540 | return true; | |
bb9e3bb8 CY |
2541 | } |
2542 | return false; | |
2543 | } | |
2544 | ||
7eab0c0d HP |
2545 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
2546 | { | |
2547 | struct inode *inode = fio->page->mapping->host; | |
2548 | ||
4d57b86d | 2549 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
2550 | return false; |
2551 | ||
4d57b86d | 2552 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
2553 | } |
2554 | ||
4d57b86d | 2555 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 2556 | { |
05ca3632 | 2557 | struct page *page = fio->page; |
eb47b800 | 2558 | struct inode *inode = page->mapping->host; |
eb47b800 | 2559 | struct dnode_of_data dn; |
94afd6d6 | 2560 | struct extent_info ei = {0, }; |
7735730d | 2561 | struct node_info ni; |
e959c8f5 | 2562 | bool ipu_force = false; |
eb47b800 JK |
2563 | int err = 0; |
2564 | ||
2565 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
2566 | if (need_inplace_update(fio) && |
2567 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
2568 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 2569 | |
c9b60788 | 2570 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
93770ab7 | 2571 | DATA_GENERIC_ENHANCE)) |
10f966bb | 2572 | return -EFSCORRUPTED; |
c9b60788 CY |
2573 | |
2574 | ipu_force = true; | |
2575 | fio->need_lock = LOCK_DONE; | |
2576 | goto got_it; | |
e959c8f5 | 2577 | } |
279d6df2 | 2578 | |
d29460e5 JK |
2579 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2580 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2581 | return -EAGAIN; | |
279d6df2 | 2582 | |
4d57b86d | 2583 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2584 | if (err) |
279d6df2 | 2585 | goto out; |
eb47b800 | 2586 | |
28bc106b | 2587 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2588 | |
2589 | /* This page is already truncated */ | |
7a9d7548 | 2590 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2591 | ClearPageUptodate(page); |
b763f3be | 2592 | clear_page_private_gcing(page); |
eb47b800 | 2593 | goto out_writepage; |
2bca1e23 | 2594 | } |
e959c8f5 | 2595 | got_it: |
c9b60788 CY |
2596 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2597 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2598 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2599 | err = -EFSCORRUPTED; |
c9b60788 CY |
2600 | goto out_writepage; |
2601 | } | |
eb47b800 JK |
2602 | /* |
2603 | * If current allocation needs SSR, | |
2604 | * it had better in-place writes for updated data. | |
2605 | */ | |
93770ab7 CY |
2606 | if (ipu_force || |
2607 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2608 | need_inplace_update(fio))) { |
4c8ff709 | 2609 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2610 | if (err) |
2611 | goto out_writepage; | |
2612 | ||
2613 | set_page_writeback(page); | |
17c50035 | 2614 | ClearPageError(page); |
279d6df2 | 2615 | f2fs_put_dnode(&dn); |
cc15620b | 2616 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2617 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2618 | err = f2fs_inplace_write_data(fio); |
6492a335 | 2619 | if (err) { |
27aacd28 | 2620 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
d2d0727b | 2621 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2622 | if (PageWriteback(page)) |
2623 | end_page_writeback(page); | |
cd23ffa9 CY |
2624 | } else { |
2625 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2626 | } |
7eab0c0d | 2627 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2628 | return err; |
eb47b800 | 2629 | } |
279d6df2 | 2630 | |
cc15620b JK |
2631 | if (fio->need_lock == LOCK_RETRY) { |
2632 | if (!f2fs_trylock_op(fio->sbi)) { | |
2633 | err = -EAGAIN; | |
2634 | goto out_writepage; | |
2635 | } | |
2636 | fio->need_lock = LOCK_REQ; | |
2637 | } | |
2638 | ||
a9419b63 | 2639 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni, false); |
7735730d CY |
2640 | if (err) |
2641 | goto out_writepage; | |
2642 | ||
2643 | fio->version = ni.version; | |
2644 | ||
4c8ff709 | 2645 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2646 | if (err) |
2647 | goto out_writepage; | |
2648 | ||
2649 | set_page_writeback(page); | |
17c50035 | 2650 | ClearPageError(page); |
cc15620b | 2651 | |
4c8ff709 CY |
2652 | if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) |
2653 | f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); | |
2654 | ||
279d6df2 | 2655 | /* LFS mode write path */ |
4d57b86d | 2656 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2657 | trace_f2fs_do_write_data_page(page, OPU); |
2658 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2659 | if (page->index == 0) | |
2660 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2661 | out_writepage: |
2662 | f2fs_put_dnode(&dn); | |
279d6df2 | 2663 | out: |
cc15620b | 2664 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2665 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2666 | return err; |
2667 | } | |
2668 | ||
4c8ff709 | 2669 | int f2fs_write_single_data_page(struct page *page, int *submitted, |
8648de2c CY |
2670 | struct bio **bio, |
2671 | sector_t *last_block, | |
b0af6d49 | 2672 | struct writeback_control *wbc, |
4c8ff709 | 2673 | enum iostat_type io_type, |
3afae09f CY |
2674 | int compr_blocks, |
2675 | bool allow_balance) | |
eb47b800 JK |
2676 | { |
2677 | struct inode *inode = page->mapping->host; | |
4081363f | 2678 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 | 2679 | loff_t i_size = i_size_read(inode); |
4c8ff709 | 2680 | const pgoff_t end_index = ((unsigned long long)i_size) |
09cbfeaf | 2681 | >> PAGE_SHIFT; |
1f0d5c91 | 2682 | loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2683 | unsigned offset = 0; |
39936837 | 2684 | bool need_balance_fs = false; |
eb47b800 | 2685 | int err = 0; |
458e6197 | 2686 | struct f2fs_io_info fio = { |
05ca3632 | 2687 | .sbi = sbi, |
39d787be | 2688 | .ino = inode->i_ino, |
458e6197 | 2689 | .type = DATA, |
04d328de | 2690 | .op = REQ_OP_WRITE, |
7637241e | 2691 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2692 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2693 | .page = page, |
4375a336 | 2694 | .encrypted_page = NULL, |
d68f735b | 2695 | .submitted = false, |
4c8ff709 | 2696 | .compr_blocks = compr_blocks, |
cc15620b | 2697 | .need_lock = LOCK_RETRY, |
b0af6d49 | 2698 | .io_type = io_type, |
578c6478 | 2699 | .io_wbc = wbc, |
8648de2c CY |
2700 | .bio = bio, |
2701 | .last_block = last_block, | |
458e6197 | 2702 | }; |
eb47b800 | 2703 | |
ecda0de3 CY |
2704 | trace_f2fs_writepage(page, DATA); |
2705 | ||
db198ae0 CY |
2706 | /* we should bypass data pages to proceed the kworkder jobs */ |
2707 | if (unlikely(f2fs_cp_error(sbi))) { | |
2708 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2709 | /* |
2710 | * don't drop any dirty dentry pages for keeping lastest | |
2711 | * directory structure. | |
2712 | */ | |
2713 | if (S_ISDIR(inode->i_mode)) | |
2714 | goto redirty_out; | |
db198ae0 CY |
2715 | goto out; |
2716 | } | |
2717 | ||
0771fcc7 CY |
2718 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2719 | goto redirty_out; | |
2720 | ||
4c8ff709 CY |
2721 | if (page->index < end_index || |
2722 | f2fs_verity_in_progress(inode) || | |
2723 | compr_blocks) | |
39936837 | 2724 | goto write; |
eb47b800 JK |
2725 | |
2726 | /* | |
2727 | * If the offset is out-of-range of file size, | |
2728 | * this page does not have to be written to disk. | |
2729 | */ | |
09cbfeaf | 2730 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2731 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2732 | goto out; |
eb47b800 | 2733 | |
09cbfeaf | 2734 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2735 | write: |
1e84371f JK |
2736 | if (f2fs_is_drop_cache(inode)) |
2737 | goto out; | |
e6e5f561 JK |
2738 | /* we should not write 0'th page having journal header */ |
2739 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
2740 | (!wbc->for_reclaim && | |
4d57b86d | 2741 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 2742 | goto redirty_out; |
eb47b800 | 2743 | |
435cbab9 JK |
2744 | /* Dentry/quota blocks are controlled by checkpoint */ |
2745 | if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) { | |
79963d96 CY |
2746 | /* |
2747 | * We need to wait for node_write to avoid block allocation during | |
2748 | * checkpoint. This can only happen to quota writes which can cause | |
2749 | * the below discard race condition. | |
2750 | */ | |
2751 | if (IS_NOQUOTA(inode)) | |
2752 | down_read(&sbi->node_write); | |
2753 | ||
cc15620b | 2754 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2755 | err = f2fs_do_write_data_page(&fio); |
79963d96 CY |
2756 | |
2757 | if (IS_NOQUOTA(inode)) | |
2758 | up_read(&sbi->node_write); | |
2759 | ||
8618b881 JK |
2760 | goto done; |
2761 | } | |
9ffe0fb5 | 2762 | |
8618b881 | 2763 | if (!wbc->for_reclaim) |
39936837 | 2764 | need_balance_fs = true; |
7f3037a5 | 2765 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2766 | goto redirty_out; |
ef095d19 JK |
2767 | else |
2768 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2769 | |
b3d208f9 | 2770 | err = -EAGAIN; |
dd7b2333 | 2771 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2772 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2773 | if (!err) |
2774 | goto out; | |
2775 | } | |
279d6df2 | 2776 | |
cc15620b | 2777 | if (err == -EAGAIN) { |
4d57b86d | 2778 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2779 | if (err == -EAGAIN) { |
2780 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2781 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2782 | } |
2783 | } | |
a0d00fad | 2784 | |
eb449797 CY |
2785 | if (err) { |
2786 | file_set_keep_isize(inode); | |
2787 | } else { | |
c10c9820 | 2788 | spin_lock(&F2FS_I(inode)->i_size_lock); |
eb449797 CY |
2789 | if (F2FS_I(inode)->last_disk_size < psize) |
2790 | F2FS_I(inode)->last_disk_size = psize; | |
c10c9820 | 2791 | spin_unlock(&F2FS_I(inode)->i_size_lock); |
eb449797 | 2792 | } |
279d6df2 | 2793 | |
8618b881 JK |
2794 | done: |
2795 | if (err && err != -ENOENT) | |
2796 | goto redirty_out; | |
eb47b800 | 2797 | |
39936837 | 2798 | out: |
a7ffdbe2 | 2799 | inode_dec_dirty_pages(inode); |
2baf0781 | 2800 | if (err) { |
2bca1e23 | 2801 | ClearPageUptodate(page); |
b763f3be | 2802 | clear_page_private_gcing(page); |
2baf0781 | 2803 | } |
0c3a5797 CY |
2804 | |
2805 | if (wbc->for_reclaim) { | |
bab475c5 | 2806 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2807 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2808 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2809 | submitted = NULL; |
0c3a5797 | 2810 | } |
eb47b800 | 2811 | unlock_page(page); |
186857c5 | 2812 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
3afae09f | 2813 | !F2FS_I(inode)->cp_task && allow_balance) |
a7881893 | 2814 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2815 | |
d68f735b | 2816 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2817 | f2fs_submit_merged_write(sbi, DATA); |
0b20fcec | 2818 | f2fs_submit_merged_ipu_write(sbi, bio, NULL); |
d68f735b JK |
2819 | submitted = NULL; |
2820 | } | |
2821 | ||
2822 | if (submitted) | |
4c8ff709 | 2823 | *submitted = fio.submitted ? 1 : 0; |
0c3a5797 | 2824 | |
eb47b800 JK |
2825 | return 0; |
2826 | ||
eb47b800 | 2827 | redirty_out: |
76f60268 | 2828 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2829 | /* |
2830 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2831 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2832 | * file_write_and_wait_range() will see EIO error, which is critical | |
2833 | * to return value of fsync() followed by atomic_write failure to user. | |
2834 | */ | |
2835 | if (!err || wbc->for_reclaim) | |
0002b61b | 2836 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2837 | unlock_page(page); |
2838 | return err; | |
fa9150a8 NJ |
2839 | } |
2840 | ||
f566bae8 JK |
2841 | static int f2fs_write_data_page(struct page *page, |
2842 | struct writeback_control *wbc) | |
2843 | { | |
4c8ff709 CY |
2844 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2845 | struct inode *inode = page->mapping->host; | |
2846 | ||
2847 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) | |
2848 | goto out; | |
2849 | ||
2850 | if (f2fs_compressed_file(inode)) { | |
2851 | if (f2fs_is_compressed_cluster(inode, page->index)) { | |
2852 | redirty_page_for_writepage(wbc, page); | |
2853 | return AOP_WRITEPAGE_ACTIVATE; | |
2854 | } | |
2855 | } | |
2856 | out: | |
2857 | #endif | |
2858 | ||
2859 | return f2fs_write_single_data_page(page, NULL, NULL, NULL, | |
3afae09f | 2860 | wbc, FS_DATA_IO, 0, true); |
f566bae8 JK |
2861 | } |
2862 | ||
8f46dcae CY |
2863 | /* |
2864 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2865 | * The major change is making write step of cold data page separately from | |
2866 | * warm/hot data page. | |
2867 | */ | |
2868 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2869 | struct writeback_control *wbc, |
2870 | enum iostat_type io_type) | |
8f46dcae CY |
2871 | { |
2872 | int ret = 0; | |
4c8ff709 | 2873 | int done = 0, retry = 0; |
8f46dcae | 2874 | struct pagevec pvec; |
c29fd0c0 | 2875 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2876 | struct bio *bio = NULL; |
2877 | sector_t last_block; | |
4c8ff709 CY |
2878 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2879 | struct inode *inode = mapping->host; | |
2880 | struct compress_ctx cc = { | |
2881 | .inode = inode, | |
2882 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2883 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2884 | .cluster_idx = NULL_CLUSTER, | |
2885 | .rpages = NULL, | |
2886 | .nr_rpages = 0, | |
2887 | .cpages = NULL, | |
3271d7eb | 2888 | .valid_nr_cpages = 0, |
4c8ff709 CY |
2889 | .rbuf = NULL, |
2890 | .cbuf = NULL, | |
2891 | .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, | |
2892 | .private = NULL, | |
2893 | }; | |
2894 | #endif | |
8f46dcae | 2895 | int nr_pages; |
8f46dcae CY |
2896 | pgoff_t index; |
2897 | pgoff_t end; /* Inclusive */ | |
2898 | pgoff_t done_index; | |
8f46dcae | 2899 | int range_whole = 0; |
10bbd235 | 2900 | xa_mark_t tag; |
bab475c5 | 2901 | int nwritten = 0; |
4c8ff709 CY |
2902 | int submitted = 0; |
2903 | int i; | |
8f46dcae | 2904 | |
86679820 | 2905 | pagevec_init(&pvec); |
46ae957f | 2906 | |
ef095d19 JK |
2907 | if (get_dirty_pages(mapping->host) <= |
2908 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2909 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2910 | else | |
2911 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2912 | ||
8f46dcae | 2913 | if (wbc->range_cyclic) { |
4df7a75f | 2914 | index = mapping->writeback_index; /* prev offset */ |
8f46dcae CY |
2915 | end = -1; |
2916 | } else { | |
09cbfeaf KS |
2917 | index = wbc->range_start >> PAGE_SHIFT; |
2918 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2919 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2920 | range_whole = 1; | |
8f46dcae CY |
2921 | } |
2922 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2923 | tag = PAGECACHE_TAG_TOWRITE; | |
2924 | else | |
2925 | tag = PAGECACHE_TAG_DIRTY; | |
2926 | retry: | |
4c8ff709 | 2927 | retry = 0; |
8f46dcae CY |
2928 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) |
2929 | tag_pages_for_writeback(mapping, index, end); | |
2930 | done_index = index; | |
4c8ff709 | 2931 | while (!done && !retry && (index <= end)) { |
69c4f35d | 2932 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2933 | tag); |
8f46dcae CY |
2934 | if (nr_pages == 0) |
2935 | break; | |
2936 | ||
2937 | for (i = 0; i < nr_pages; i++) { | |
2938 | struct page *page = pvec.pages[i]; | |
4c8ff709 CY |
2939 | bool need_readd; |
2940 | readd: | |
2941 | need_readd = false; | |
2942 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2943 | if (f2fs_compressed_file(inode)) { | |
b368cc5e FC |
2944 | void *fsdata = NULL; |
2945 | struct page *pagep; | |
2946 | int ret2; | |
2947 | ||
4c8ff709 CY |
2948 | ret = f2fs_init_compress_ctx(&cc); |
2949 | if (ret) { | |
2950 | done = 1; | |
2951 | break; | |
2952 | } | |
2953 | ||
2954 | if (!f2fs_cluster_can_merge_page(&cc, | |
2955 | page->index)) { | |
2956 | ret = f2fs_write_multi_pages(&cc, | |
2957 | &submitted, wbc, io_type); | |
2958 | if (!ret) | |
2959 | need_readd = true; | |
2960 | goto result; | |
2961 | } | |
8f46dcae | 2962 | |
4c8ff709 CY |
2963 | if (unlikely(f2fs_cp_error(sbi))) |
2964 | goto lock_page; | |
2965 | ||
b368cc5e FC |
2966 | if (!f2fs_cluster_is_empty(&cc)) |
2967 | goto lock_page; | |
4c8ff709 | 2968 | |
b368cc5e | 2969 | ret2 = f2fs_prepare_compress_overwrite( |
4c8ff709 CY |
2970 | inode, &pagep, |
2971 | page->index, &fsdata); | |
b368cc5e FC |
2972 | if (ret2 < 0) { |
2973 | ret = ret2; | |
2974 | done = 1; | |
2975 | break; | |
2976 | } else if (ret2 && | |
2977 | (!f2fs_compress_write_end(inode, | |
2978 | fsdata, page->index, 1) || | |
2979 | !f2fs_all_cluster_page_loaded(&cc, | |
2980 | &pvec, i, nr_pages))) { | |
2981 | retry = 1; | |
2982 | break; | |
4c8ff709 CY |
2983 | } |
2984 | } | |
2985 | #endif | |
f8de4331 | 2986 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2987 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2988 | wbc->sync_mode == WB_SYNC_NONE) { |
2989 | done = 1; | |
2990 | break; | |
2991 | } | |
4c8ff709 CY |
2992 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2993 | lock_page: | |
2994 | #endif | |
8f46dcae | 2995 | done_index = page->index; |
d29460e5 | 2996 | retry_write: |
8f46dcae CY |
2997 | lock_page(page); |
2998 | ||
2999 | if (unlikely(page->mapping != mapping)) { | |
3000 | continue_unlock: | |
3001 | unlock_page(page); | |
3002 | continue; | |
3003 | } | |
3004 | ||
3005 | if (!PageDirty(page)) { | |
3006 | /* someone wrote it for us */ | |
3007 | goto continue_unlock; | |
3008 | } | |
3009 | ||
8f46dcae | 3010 | if (PageWriteback(page)) { |
0b20fcec | 3011 | if (wbc->sync_mode != WB_SYNC_NONE) |
fec1d657 | 3012 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 3013 | DATA, true, true); |
0b20fcec | 3014 | else |
8f46dcae CY |
3015 | goto continue_unlock; |
3016 | } | |
3017 | ||
8f46dcae CY |
3018 | if (!clear_page_dirty_for_io(page)) |
3019 | goto continue_unlock; | |
3020 | ||
4c8ff709 CY |
3021 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3022 | if (f2fs_compressed_file(inode)) { | |
3023 | get_page(page); | |
3024 | f2fs_compress_ctx_add_page(&cc, page); | |
3025 | continue; | |
3026 | } | |
3027 | #endif | |
3028 | ret = f2fs_write_single_data_page(page, &submitted, | |
3afae09f CY |
3029 | &bio, &last_block, wbc, io_type, |
3030 | 0, true); | |
4c8ff709 CY |
3031 | if (ret == AOP_WRITEPAGE_ACTIVATE) |
3032 | unlock_page(page); | |
3033 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3034 | result: | |
3035 | #endif | |
3036 | nwritten += submitted; | |
3037 | wbc->nr_to_write -= submitted; | |
3038 | ||
8f46dcae | 3039 | if (unlikely(ret)) { |
0002b61b CY |
3040 | /* |
3041 | * keep nr_to_write, since vfs uses this to | |
3042 | * get # of written pages. | |
3043 | */ | |
3044 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
0002b61b | 3045 | ret = 0; |
4c8ff709 | 3046 | goto next; |
d29460e5 JK |
3047 | } else if (ret == -EAGAIN) { |
3048 | ret = 0; | |
3049 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
3050 | cond_resched(); | |
3051 | congestion_wait(BLK_RW_ASYNC, | |
5df7731f | 3052 | DEFAULT_IO_TIMEOUT); |
d29460e5 JK |
3053 | goto retry_write; |
3054 | } | |
4c8ff709 | 3055 | goto next; |
0002b61b | 3056 | } |
b230e6ca JK |
3057 | done_index = page->index + 1; |
3058 | done = 1; | |
3059 | break; | |
8f46dcae CY |
3060 | } |
3061 | ||
4c8ff709 | 3062 | if (wbc->nr_to_write <= 0 && |
687de7f1 | 3063 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
3064 | done = 1; |
3065 | break; | |
3066 | } | |
4c8ff709 CY |
3067 | next: |
3068 | if (need_readd) | |
3069 | goto readd; | |
8f46dcae CY |
3070 | } |
3071 | pagevec_release(&pvec); | |
3072 | cond_resched(); | |
3073 | } | |
4c8ff709 CY |
3074 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3075 | /* flush remained pages in compress cluster */ | |
3076 | if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) { | |
3077 | ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); | |
3078 | nwritten += submitted; | |
3079 | wbc->nr_to_write -= submitted; | |
3080 | if (ret) { | |
3081 | done = 1; | |
3082 | retry = 0; | |
3083 | } | |
3084 | } | |
adfc6943 | 3085 | if (f2fs_compressed_file(inode)) |
8bfbfb0d | 3086 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 | 3087 | #endif |
e78790f8 | 3088 | if (retry) { |
8f46dcae | 3089 | index = 0; |
e78790f8 | 3090 | end = -1; |
8f46dcae CY |
3091 | goto retry; |
3092 | } | |
e78790f8 ST |
3093 | if (wbc->range_cyclic && !done) |
3094 | done_index = 0; | |
8f46dcae CY |
3095 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) |
3096 | mapping->writeback_index = done_index; | |
3097 | ||
bab475c5 | 3098 | if (nwritten) |
b9109b0e | 3099 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 3100 | NULL, 0, DATA); |
8648de2c CY |
3101 | /* submit cached bio of IPU write */ |
3102 | if (bio) | |
0b20fcec | 3103 | f2fs_submit_merged_ipu_write(sbi, &bio, NULL); |
6ca56ca4 | 3104 | |
8f46dcae CY |
3105 | return ret; |
3106 | } | |
3107 | ||
853137ce JK |
3108 | static inline bool __should_serialize_io(struct inode *inode, |
3109 | struct writeback_control *wbc) | |
3110 | { | |
b13f67ff CY |
3111 | /* to avoid deadlock in path of data flush */ |
3112 | if (F2FS_I(inode)->cp_task) | |
3113 | return false; | |
3114 | ||
853137ce JK |
3115 | if (!S_ISREG(inode->i_mode)) |
3116 | return false; | |
af033b2a CY |
3117 | if (IS_NOQUOTA(inode)) |
3118 | return false; | |
b13f67ff | 3119 | |
602a16d5 | 3120 | if (f2fs_need_compress_data(inode)) |
b13f67ff | 3121 | return true; |
853137ce JK |
3122 | if (wbc->sync_mode != WB_SYNC_ALL) |
3123 | return true; | |
3124 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
3125 | return true; | |
3126 | return false; | |
3127 | } | |
3128 | ||
fc99fe27 | 3129 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
3130 | struct writeback_control *wbc, |
3131 | enum iostat_type io_type) | |
eb47b800 JK |
3132 | { |
3133 | struct inode *inode = mapping->host; | |
4081363f | 3134 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 3135 | struct blk_plug plug; |
eb47b800 | 3136 | int ret; |
853137ce | 3137 | bool locked = false; |
eb47b800 | 3138 | |
cfb185a1 | 3139 | /* deal with chardevs and other special file */ |
3140 | if (!mapping->a_ops->writepage) | |
3141 | return 0; | |
3142 | ||
6a290544 CY |
3143 | /* skip writing if there is no dirty page in this inode */ |
3144 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
3145 | return 0; | |
3146 | ||
0771fcc7 CY |
3147 | /* during POR, we don't need to trigger writepage at all. */ |
3148 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
3149 | goto skip_write; | |
3150 | ||
af033b2a CY |
3151 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
3152 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 3153 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 3154 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
3155 | goto skip_write; |
3156 | ||
d323d005 | 3157 | /* skip writing during file defragment */ |
91942321 | 3158 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
3159 | goto skip_write; |
3160 | ||
d31c7c3f YH |
3161 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
3162 | ||
687de7f1 JK |
3163 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
3164 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
3165 | atomic_inc(&sbi->wb_sync_req[DATA]); |
3166 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
3167 | goto skip_write; |
3168 | ||
853137ce JK |
3169 | if (__should_serialize_io(inode, wbc)) { |
3170 | mutex_lock(&sbi->writepages); | |
3171 | locked = true; | |
3172 | } | |
3173 | ||
9dfa1baf | 3174 | blk_start_plug(&plug); |
b0af6d49 | 3175 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 3176 | blk_finish_plug(&plug); |
687de7f1 | 3177 | |
853137ce JK |
3178 | if (locked) |
3179 | mutex_unlock(&sbi->writepages); | |
3180 | ||
687de7f1 | 3181 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 3182 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
3183 | /* |
3184 | * if some pages were truncated, we cannot guarantee its mapping->host | |
3185 | * to detect pending bios. | |
3186 | */ | |
458e6197 | 3187 | |
4d57b86d | 3188 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 3189 | return ret; |
d3baf95d JK |
3190 | |
3191 | skip_write: | |
a7ffdbe2 | 3192 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 3193 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 3194 | return 0; |
eb47b800 JK |
3195 | } |
3196 | ||
b0af6d49 CY |
3197 | static int f2fs_write_data_pages(struct address_space *mapping, |
3198 | struct writeback_control *wbc) | |
3199 | { | |
3200 | struct inode *inode = mapping->host; | |
3201 | ||
3202 | return __f2fs_write_data_pages(mapping, wbc, | |
3203 | F2FS_I(inode)->cp_task == current ? | |
3204 | FS_CP_DATA_IO : FS_DATA_IO); | |
3205 | } | |
3206 | ||
a1e09b03 | 3207 | void f2fs_write_failed(struct inode *inode, loff_t to) |
3aab8f82 | 3208 | { |
819d9153 | 3209 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 3210 | |
3f188c23 JK |
3211 | if (IS_NOQUOTA(inode)) |
3212 | return; | |
3213 | ||
95ae251f EB |
3214 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
3215 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
a33c1502 | 3216 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6abaa83c | 3217 | filemap_invalidate_lock(inode->i_mapping); |
a33c1502 | 3218 | |
819d9153 | 3219 | truncate_pagecache(inode, i_size); |
3f188c23 | 3220 | f2fs_truncate_blocks(inode, i_size, true); |
a33c1502 | 3221 | |
6abaa83c | 3222 | filemap_invalidate_unlock(inode->i_mapping); |
6f8d4455 | 3223 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
3224 | } |
3225 | } | |
3226 | ||
2aadac08 JK |
3227 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
3228 | struct page *page, loff_t pos, unsigned len, | |
3229 | block_t *blk_addr, bool *node_changed) | |
3230 | { | |
3231 | struct inode *inode = page->mapping->host; | |
3232 | pgoff_t index = page->index; | |
3233 | struct dnode_of_data dn; | |
3234 | struct page *ipage; | |
b4d07a3e | 3235 | bool locked = false; |
94afd6d6 | 3236 | struct extent_info ei = {0, }; |
2aadac08 | 3237 | int err = 0; |
2866fb16 | 3238 | int flag; |
2aadac08 | 3239 | |
24b84912 | 3240 | /* |
3d697a4a EB |
3241 | * If a whole page is being written and we already preallocated all the |
3242 | * blocks, then there is no need to get a block address now. | |
24b84912 | 3243 | */ |
3d697a4a | 3244 | if (len == PAGE_SIZE && is_inode_flag_set(inode, FI_PREALLOCATED_ALL)) |
24b84912 JK |
3245 | return 0; |
3246 | ||
2866fb16 SY |
3247 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
3248 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
3249 | flag = F2FS_GET_BLOCK_DEFAULT; | |
3250 | else | |
3251 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
3252 | ||
b4d07a3e | 3253 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 3254 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
0ef81833 | 3255 | f2fs_do_map_lock(sbi, flag, true); |
b4d07a3e JK |
3256 | locked = true; |
3257 | } | |
4c8ff709 | 3258 | |
b4d07a3e | 3259 | restart: |
2aadac08 | 3260 | /* check inline_data */ |
4d57b86d | 3261 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
3262 | if (IS_ERR(ipage)) { |
3263 | err = PTR_ERR(ipage); | |
3264 | goto unlock_out; | |
3265 | } | |
3266 | ||
3267 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3268 | ||
3269 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 3270 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 3271 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 3272 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d | 3273 | if (inode->i_nlink) |
b763f3be | 3274 | set_page_private_inline(ipage); |
2aadac08 JK |
3275 | } else { |
3276 | err = f2fs_convert_inline_page(&dn, page); | |
3277 | if (err) | |
b4d07a3e JK |
3278 | goto out; |
3279 | if (dn.data_blkaddr == NULL_ADDR) | |
3280 | err = f2fs_get_block(&dn, index); | |
3281 | } | |
3282 | } else if (locked) { | |
3283 | err = f2fs_get_block(&dn, index); | |
3284 | } else { | |
3285 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
3286 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
3287 | } else { | |
b4d07a3e | 3288 | /* hole case */ |
4d57b86d | 3289 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 3290 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 3291 | f2fs_put_dnode(&dn); |
0ef81833 | 3292 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
59c9081b | 3293 | true); |
2866fb16 | 3294 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
3295 | locked = true; |
3296 | goto restart; | |
3297 | } | |
2aadac08 JK |
3298 | } |
3299 | } | |
b4d07a3e | 3300 | |
2aadac08 JK |
3301 | /* convert_inline_page can make node_changed */ |
3302 | *blk_addr = dn.data_blkaddr; | |
3303 | *node_changed = dn.node_changed; | |
b4d07a3e | 3304 | out: |
2aadac08 JK |
3305 | f2fs_put_dnode(&dn); |
3306 | unlock_out: | |
b4d07a3e | 3307 | if (locked) |
0ef81833 | 3308 | f2fs_do_map_lock(sbi, flag, false); |
2aadac08 JK |
3309 | return err; |
3310 | } | |
3311 | ||
eb47b800 JK |
3312 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
3313 | loff_t pos, unsigned len, unsigned flags, | |
3314 | struct page **pagep, void **fsdata) | |
3315 | { | |
3316 | struct inode *inode = mapping->host; | |
4081363f | 3317 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 3318 | struct page *page = NULL; |
09cbfeaf | 3319 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 3320 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 3321 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
3322 | int err = 0; |
3323 | ||
62aed044 CY |
3324 | trace_f2fs_write_begin(inode, pos, len, flags); |
3325 | ||
00e09c0b CY |
3326 | if (!f2fs_is_checkpoint_ready(sbi)) { |
3327 | err = -ENOSPC; | |
4354994f | 3328 | goto fail; |
00e09c0b | 3329 | } |
4354994f | 3330 | |
455e3a58 JK |
3331 | if ((f2fs_is_atomic_file(inode) && |
3332 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
3333 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 3334 | err = -ENOMEM; |
a2e2e76b | 3335 | drop_atomic = true; |
57864ae5 JK |
3336 | goto fail; |
3337 | } | |
3338 | ||
5f727395 JK |
3339 | /* |
3340 | * We should check this at this moment to avoid deadlock on inode page | |
3341 | * and #0 page. The locking rule for inline_data conversion should be: | |
3342 | * lock_page(page #0) -> lock_page(inode_page) | |
3343 | */ | |
3344 | if (index != 0) { | |
3345 | err = f2fs_convert_inline_inode(inode); | |
3346 | if (err) | |
3347 | goto fail; | |
3348 | } | |
4c8ff709 CY |
3349 | |
3350 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3351 | if (f2fs_compressed_file(inode)) { | |
3352 | int ret; | |
3353 | ||
3354 | *fsdata = NULL; | |
3355 | ||
7eab7a69 FC |
3356 | if (len == PAGE_SIZE) |
3357 | goto repeat; | |
3358 | ||
4c8ff709 CY |
3359 | ret = f2fs_prepare_compress_overwrite(inode, pagep, |
3360 | index, fsdata); | |
3361 | if (ret < 0) { | |
3362 | err = ret; | |
3363 | goto fail; | |
3364 | } else if (ret) { | |
3365 | return 0; | |
3366 | } | |
3367 | } | |
3368 | #endif | |
3369 | ||
afcb7ca0 | 3370 | repeat: |
86d54795 JK |
3371 | /* |
3372 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
3373 | * wait_for_stable_page. Will wait that below with our IO control. | |
3374 | */ | |
01eccef7 | 3375 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 3376 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
3377 | if (!page) { |
3378 | err = -ENOMEM; | |
3379 | goto fail; | |
3380 | } | |
d5f66990 | 3381 | |
4c8ff709 CY |
3382 | /* TODO: cluster can be compressed due to race with .writepage */ |
3383 | ||
eb47b800 JK |
3384 | *pagep = page; |
3385 | ||
2aadac08 JK |
3386 | err = prepare_write_begin(sbi, page, pos, len, |
3387 | &blkaddr, &need_balance); | |
9ba69cf9 | 3388 | if (err) |
2aadac08 | 3389 | goto fail; |
9ba69cf9 | 3390 | |
af033b2a CY |
3391 | if (need_balance && !IS_NOQUOTA(inode) && |
3392 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 3393 | unlock_page(page); |
2c4db1a6 | 3394 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
3395 | lock_page(page); |
3396 | if (page->mapping != mapping) { | |
3397 | /* The page got truncated from under us */ | |
3398 | f2fs_put_page(page, 1); | |
3399 | goto repeat; | |
3400 | } | |
3401 | } | |
3402 | ||
bae0ee7a | 3403 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 3404 | |
649d7df2 JK |
3405 | if (len == PAGE_SIZE || PageUptodate(page)) |
3406 | return 0; | |
eb47b800 | 3407 | |
95ae251f EB |
3408 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
3409 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
3410 | zero_user_segment(page, len, PAGE_SIZE); |
3411 | return 0; | |
3412 | } | |
3413 | ||
2aadac08 | 3414 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 3415 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 3416 | SetPageUptodate(page); |
eb47b800 | 3417 | } else { |
93770ab7 CY |
3418 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
3419 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 3420 | err = -EFSCORRUPTED; |
93770ab7 CY |
3421 | goto fail; |
3422 | } | |
b7973091 | 3423 | err = f2fs_submit_page_read(inode, page, blkaddr, 0, true); |
13ba41e3 | 3424 | if (err) |
78682f79 | 3425 | goto fail; |
d54c795b | 3426 | |
393ff91f | 3427 | lock_page(page); |
6bacf52f | 3428 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
3429 | f2fs_put_page(page, 1); |
3430 | goto repeat; | |
eb47b800 | 3431 | } |
1563ac75 CY |
3432 | if (unlikely(!PageUptodate(page))) { |
3433 | err = -EIO; | |
3434 | goto fail; | |
4375a336 | 3435 | } |
eb47b800 | 3436 | } |
eb47b800 | 3437 | return 0; |
9ba69cf9 | 3438 | |
3aab8f82 | 3439 | fail: |
86531d6b | 3440 | f2fs_put_page(page, 1); |
3e679dc7 | 3441 | f2fs_write_failed(inode, pos + len); |
a2e2e76b | 3442 | if (drop_atomic) |
4d57b86d | 3443 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 3444 | return err; |
eb47b800 JK |
3445 | } |
3446 | ||
a1dd3c13 JK |
3447 | static int f2fs_write_end(struct file *file, |
3448 | struct address_space *mapping, | |
3449 | loff_t pos, unsigned len, unsigned copied, | |
3450 | struct page *page, void *fsdata) | |
3451 | { | |
3452 | struct inode *inode = page->mapping->host; | |
3453 | ||
dfb2bf38 CY |
3454 | trace_f2fs_write_end(inode, pos, len, copied); |
3455 | ||
649d7df2 JK |
3456 | /* |
3457 | * This should be come from len == PAGE_SIZE, and we expect copied | |
3458 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
3459 | * let generic_perform_write() try to copy data again through copied=0. | |
3460 | */ | |
3461 | if (!PageUptodate(page)) { | |
746e2403 | 3462 | if (unlikely(copied != len)) |
649d7df2 JK |
3463 | copied = 0; |
3464 | else | |
3465 | SetPageUptodate(page); | |
3466 | } | |
4c8ff709 CY |
3467 | |
3468 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3469 | /* overwrite compressed file */ | |
3470 | if (f2fs_compressed_file(inode) && fsdata) { | |
3471 | f2fs_compress_write_end(inode, fsdata, page->index, copied); | |
3472 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
944dd22e CY |
3473 | |
3474 | if (pos + copied > i_size_read(inode) && | |
3475 | !f2fs_verity_in_progress(inode)) | |
3476 | f2fs_i_size_write(inode, pos + copied); | |
4c8ff709 CY |
3477 | return copied; |
3478 | } | |
3479 | #endif | |
3480 | ||
649d7df2 JK |
3481 | if (!copied) |
3482 | goto unlock_out; | |
3483 | ||
34ba94ba | 3484 | set_page_dirty(page); |
a1dd3c13 | 3485 | |
95ae251f EB |
3486 | if (pos + copied > i_size_read(inode) && |
3487 | !f2fs_verity_in_progress(inode)) | |
fc9581c8 | 3488 | f2fs_i_size_write(inode, pos + copied); |
649d7df2 | 3489 | unlock_out: |
3024c9a1 | 3490 | f2fs_put_page(page, 1); |
d0239e1b | 3491 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
3492 | return copied; |
3493 | } | |
3494 | ||
487261f3 CY |
3495 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
3496 | unsigned int length) | |
eb47b800 JK |
3497 | { |
3498 | struct inode *inode = page->mapping->host; | |
487261f3 | 3499 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 3500 | |
487261f3 | 3501 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 3502 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
3503 | return; |
3504 | ||
487261f3 | 3505 | if (PageDirty(page)) { |
933439c8 | 3506 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 3507 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 3508 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 3509 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 3510 | } else { |
487261f3 | 3511 | inode_dec_dirty_pages(inode); |
4d57b86d | 3512 | f2fs_remove_dirty_inode(inode); |
933439c8 | 3513 | } |
487261f3 | 3514 | } |
decd36b6 | 3515 | |
b763f3be | 3516 | clear_page_private_gcing(page); |
2baf0781 | 3517 | |
2a64e303 CY |
3518 | if (test_opt(sbi, COMPRESS_CACHE) && |
3519 | inode->i_ino == F2FS_COMPRESS_INO(sbi)) | |
3520 | clear_page_private_data(page); | |
6ce19aff | 3521 | |
b763f3be | 3522 | if (page_private_atomic(page)) |
4d57b86d | 3523 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 3524 | |
b763f3be CY |
3525 | detach_page_private(page); |
3526 | set_page_private(page, 0); | |
eb47b800 JK |
3527 | } |
3528 | ||
487261f3 | 3529 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 3530 | { |
f68daeeb JK |
3531 | /* If this is dirty page, keep PagePrivate */ |
3532 | if (PageDirty(page)) | |
3533 | return 0; | |
3534 | ||
decd36b6 | 3535 | /* This is atomic written page, keep Private */ |
b763f3be | 3536 | if (page_private_atomic(page)) |
decd36b6 CY |
3537 | return 0; |
3538 | ||
6ce19aff | 3539 | if (test_opt(F2FS_P_SB(page), COMPRESS_CACHE)) { |
6ce19aff CY |
3540 | struct inode *inode = page->mapping->host; |
3541 | ||
2a64e303 | 3542 | if (inode->i_ino == F2FS_COMPRESS_INO(F2FS_I_SB(inode))) |
6ce19aff CY |
3543 | clear_page_private_data(page); |
3544 | } | |
3545 | ||
b763f3be CY |
3546 | clear_page_private_gcing(page); |
3547 | ||
3548 | detach_page_private(page); | |
3549 | set_page_private(page, 0); | |
c3850aa1 | 3550 | return 1; |
eb47b800 JK |
3551 | } |
3552 | ||
3553 | static int f2fs_set_data_page_dirty(struct page *page) | |
3554 | { | |
4969c06a | 3555 | struct inode *inode = page_file_mapping(page)->host; |
eb47b800 | 3556 | |
26c6b887 JK |
3557 | trace_f2fs_set_page_dirty(page, DATA); |
3558 | ||
237c0790 JK |
3559 | if (!PageUptodate(page)) |
3560 | SetPageUptodate(page); | |
4969c06a JK |
3561 | if (PageSwapCache(page)) |
3562 | return __set_page_dirty_nobuffers(page); | |
34ba94ba | 3563 | |
5fe45743 | 3564 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
b763f3be | 3565 | if (!page_private_atomic(page)) { |
4d57b86d | 3566 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
3567 | return 1; |
3568 | } | |
3569 | /* | |
3570 | * Previously, this page has been registered, we just | |
3571 | * return here. | |
3572 | */ | |
3573 | return 0; | |
34ba94ba JK |
3574 | } |
3575 | ||
eb47b800 | 3576 | if (!PageDirty(page)) { |
b87078ad | 3577 | __set_page_dirty_nobuffers(page); |
4d57b86d | 3578 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
3579 | return 1; |
3580 | } | |
3581 | return 0; | |
3582 | } | |
3583 | ||
c1c63387 CY |
3584 | |
3585 | static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) | |
3586 | { | |
3587 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3588 | struct dnode_of_data dn; | |
3589 | sector_t start_idx, blknr = 0; | |
3590 | int ret; | |
3591 | ||
3592 | start_idx = round_down(block, F2FS_I(inode)->i_cluster_size); | |
3593 | ||
3594 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
3595 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
3596 | if (ret) | |
3597 | return 0; | |
3598 | ||
3599 | if (dn.data_blkaddr != COMPRESS_ADDR) { | |
3600 | dn.ofs_in_node += block - start_idx; | |
3601 | blknr = f2fs_data_blkaddr(&dn); | |
3602 | if (!__is_valid_data_blkaddr(blknr)) | |
3603 | blknr = 0; | |
3604 | } | |
3605 | ||
3606 | f2fs_put_dnode(&dn); | |
c1c63387 CY |
3607 | return blknr; |
3608 | #else | |
250e84d7 | 3609 | return 0; |
c1c63387 CY |
3610 | #endif |
3611 | } | |
3612 | ||
3613 | ||
c01e54b7 JK |
3614 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
3615 | { | |
454ae7e5 | 3616 | struct inode *inode = mapping->host; |
b79b0a31 | 3617 | sector_t blknr = 0; |
454ae7e5 | 3618 | |
1d373a0e | 3619 | if (f2fs_has_inline_data(inode)) |
b79b0a31 | 3620 | goto out; |
1d373a0e JK |
3621 | |
3622 | /* make sure allocating whole blocks */ | |
3623 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
3624 | filemap_write_and_wait(mapping); | |
3625 | ||
4eda1682 | 3626 | /* Block number less than F2FS MAX BLOCKS */ |
6d1451bf | 3627 | if (unlikely(block >= max_file_blocks(inode))) |
4eda1682 | 3628 | goto out; |
c1c63387 | 3629 | |
4eda1682 DJ |
3630 | if (f2fs_compressed_file(inode)) { |
3631 | blknr = f2fs_bmap_compress(inode, block); | |
3632 | } else { | |
b876f4c9 JK |
3633 | struct f2fs_map_blocks map; |
3634 | ||
3635 | memset(&map, 0, sizeof(map)); | |
3636 | map.m_lblk = block; | |
3637 | map.m_len = 1; | |
3638 | map.m_next_pgofs = NULL; | |
3639 | map.m_seg_type = NO_CHECK_TYPE; | |
3640 | ||
3641 | if (!f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_BMAP)) | |
3642 | blknr = map.m_pblk; | |
4eda1682 | 3643 | } |
b79b0a31 CY |
3644 | out: |
3645 | trace_f2fs_bmap(inode, block, blknr); | |
3646 | return blknr; | |
429511cd CY |
3647 | } |
3648 | ||
5b7a487c WG |
3649 | #ifdef CONFIG_MIGRATION |
3650 | #include <linux/migrate.h> | |
3651 | ||
3652 | int f2fs_migrate_page(struct address_space *mapping, | |
3653 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
3654 | { | |
3655 | int rc, extra_count; | |
3656 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
b763f3be | 3657 | bool atomic_written = page_private_atomic(page); |
5b7a487c WG |
3658 | |
3659 | BUG_ON(PageWriteback(page)); | |
3660 | ||
3661 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
3662 | if (atomic_written) { |
3663 | if (mode != MIGRATE_SYNC) | |
3664 | return -EBUSY; | |
3665 | if (!mutex_trylock(&fi->inmem_lock)) | |
3666 | return -EAGAIN; | |
3667 | } | |
5b7a487c | 3668 | |
240a5915 CY |
3669 | /* one extra reference was held for atomic_write page */ |
3670 | extra_count = atomic_written ? 1 : 0; | |
5b7a487c | 3671 | rc = migrate_page_move_mapping(mapping, newpage, |
37109694 | 3672 | page, extra_count); |
5b7a487c WG |
3673 | if (rc != MIGRATEPAGE_SUCCESS) { |
3674 | if (atomic_written) | |
3675 | mutex_unlock(&fi->inmem_lock); | |
3676 | return rc; | |
3677 | } | |
3678 | ||
3679 | if (atomic_written) { | |
3680 | struct inmem_pages *cur; | |
5f029c04 | 3681 | |
5b7a487c WG |
3682 | list_for_each_entry(cur, &fi->inmem_pages, list) |
3683 | if (cur->page == page) { | |
3684 | cur->page = newpage; | |
3685 | break; | |
3686 | } | |
3687 | mutex_unlock(&fi->inmem_lock); | |
3688 | put_page(page); | |
3689 | get_page(newpage); | |
3690 | } | |
3691 | ||
c9ebd3df JK |
3692 | /* guarantee to start from no stale private field */ |
3693 | set_page_private(newpage, 0); | |
240a5915 | 3694 | if (PagePrivate(page)) { |
b763f3be CY |
3695 | set_page_private(newpage, page_private(page)); |
3696 | SetPagePrivate(newpage); | |
3697 | get_page(newpage); | |
3698 | ||
3699 | set_page_private(page, 0); | |
3700 | ClearPagePrivate(page); | |
3701 | put_page(page); | |
240a5915 | 3702 | } |
5b7a487c | 3703 | |
2916ecc0 JG |
3704 | if (mode != MIGRATE_SYNC_NO_COPY) |
3705 | migrate_page_copy(newpage, page); | |
3706 | else | |
3707 | migrate_page_states(newpage, page); | |
5b7a487c WG |
3708 | |
3709 | return MIGRATEPAGE_SUCCESS; | |
3710 | } | |
3711 | #endif | |
3712 | ||
4969c06a | 3713 | #ifdef CONFIG_SWAP |
859fca6b CY |
3714 | static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, |
3715 | unsigned int blkcnt) | |
3716 | { | |
3717 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
3718 | unsigned int blkofs; | |
3719 | unsigned int blk_per_sec = BLKS_PER_SEC(sbi); | |
3720 | unsigned int secidx = start_blk / blk_per_sec; | |
3721 | unsigned int end_sec = secidx + blkcnt / blk_per_sec; | |
3722 | int ret = 0; | |
3723 | ||
3724 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); | |
edc6d01b | 3725 | filemap_invalidate_lock(inode->i_mapping); |
859fca6b CY |
3726 | |
3727 | set_inode_flag(inode, FI_ALIGNED_WRITE); | |
3728 | ||
3729 | for (; secidx < end_sec; secidx++) { | |
3730 | down_write(&sbi->pin_sem); | |
3731 | ||
3732 | f2fs_lock_op(sbi); | |
3733 | f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false); | |
3734 | f2fs_unlock_op(sbi); | |
3735 | ||
3736 | set_inode_flag(inode, FI_DO_DEFRAG); | |
3737 | ||
3738 | for (blkofs = 0; blkofs < blk_per_sec; blkofs++) { | |
3739 | struct page *page; | |
3740 | unsigned int blkidx = secidx * blk_per_sec + blkofs; | |
3741 | ||
3742 | page = f2fs_get_lock_data_page(inode, blkidx, true); | |
3743 | if (IS_ERR(page)) { | |
3744 | up_write(&sbi->pin_sem); | |
3745 | ret = PTR_ERR(page); | |
3746 | goto done; | |
3747 | } | |
3748 | ||
3749 | set_page_dirty(page); | |
3750 | f2fs_put_page(page, 1); | |
3751 | } | |
3752 | ||
3753 | clear_inode_flag(inode, FI_DO_DEFRAG); | |
3754 | ||
3755 | ret = filemap_fdatawrite(inode->i_mapping); | |
3756 | ||
3757 | up_write(&sbi->pin_sem); | |
3758 | ||
3759 | if (ret) | |
3760 | break; | |
3761 | } | |
3762 | ||
3763 | done: | |
3764 | clear_inode_flag(inode, FI_DO_DEFRAG); | |
3765 | clear_inode_flag(inode, FI_ALIGNED_WRITE); | |
3766 | ||
edc6d01b | 3767 | filemap_invalidate_unlock(inode->i_mapping); |
859fca6b CY |
3768 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3769 | ||
3770 | return ret; | |
3771 | } | |
3772 | ||
0b8fc006 | 3773 | static int check_swap_activate(struct swap_info_struct *sis, |
af4b6b8e CY |
3774 | struct file *swap_file, sector_t *span) |
3775 | { | |
3776 | struct address_space *mapping = swap_file->f_mapping; | |
3777 | struct inode *inode = mapping->host; | |
36e4d958 | 3778 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
af4b6b8e CY |
3779 | sector_t cur_lblock; |
3780 | sector_t last_lblock; | |
3781 | sector_t pblock; | |
3782 | sector_t lowest_pblock = -1; | |
3783 | sector_t highest_pblock = 0; | |
3784 | int nr_extents = 0; | |
3785 | unsigned long nr_pblocks; | |
859fca6b CY |
3786 | unsigned int blks_per_sec = BLKS_PER_SEC(sbi); |
3787 | unsigned int sec_blks_mask = BLKS_PER_SEC(sbi) - 1; | |
ca298241 | 3788 | unsigned int not_aligned = 0; |
36e4d958 | 3789 | int ret = 0; |
af4b6b8e CY |
3790 | |
3791 | /* | |
3792 | * Map all the blocks into the extent list. This code doesn't try | |
3793 | * to be very smart. | |
3794 | */ | |
3795 | cur_lblock = 0; | |
6cbfcab5 | 3796 | last_lblock = bytes_to_blks(inode, i_size_read(inode)); |
af4b6b8e | 3797 | |
1da66103 | 3798 | while (cur_lblock < last_lblock && cur_lblock < sis->max) { |
b876f4c9 | 3799 | struct f2fs_map_blocks map; |
859fca6b | 3800 | retry: |
af4b6b8e CY |
3801 | cond_resched(); |
3802 | ||
b876f4c9 JK |
3803 | memset(&map, 0, sizeof(map)); |
3804 | map.m_lblk = cur_lblock; | |
36e4d958 | 3805 | map.m_len = last_lblock - cur_lblock; |
3806 | map.m_next_pgofs = NULL; | |
3807 | map.m_next_extent = NULL; | |
b876f4c9 | 3808 | map.m_seg_type = NO_CHECK_TYPE; |
36e4d958 | 3809 | map.m_may_create = false; |
af4b6b8e | 3810 | |
b876f4c9 | 3811 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
af4b6b8e | 3812 | if (ret) |
36e4d958 | 3813 | goto out; |
af4b6b8e CY |
3814 | |
3815 | /* hole */ | |
36e4d958 | 3816 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
833dcd35 | 3817 | f2fs_err(sbi, "Swapfile has holes"); |
f395183f | 3818 | ret = -EINVAL; |
36e4d958 | 3819 | goto out; |
3820 | } | |
af4b6b8e | 3821 | |
b876f4c9 JK |
3822 | pblock = map.m_pblk; |
3823 | nr_pblocks = map.m_len; | |
af4b6b8e | 3824 | |
859fca6b CY |
3825 | if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask || |
3826 | nr_pblocks & sec_blks_mask) { | |
ca298241 | 3827 | not_aligned++; |
36e4d958 | 3828 | |
859fca6b CY |
3829 | nr_pblocks = roundup(nr_pblocks, blks_per_sec); |
3830 | if (cur_lblock + nr_pblocks > sis->max) | |
3831 | nr_pblocks -= blks_per_sec; | |
3832 | ||
3833 | if (!nr_pblocks) { | |
3834 | /* this extent is last one */ | |
3835 | nr_pblocks = map.m_len; | |
3836 | f2fs_warn(sbi, "Swapfile: last extent is not aligned to section"); | |
3837 | goto next; | |
3838 | } | |
3839 | ||
3840 | ret = f2fs_migrate_blocks(inode, cur_lblock, | |
3841 | nr_pblocks); | |
3842 | if (ret) | |
3843 | goto out; | |
3844 | goto retry; | |
3845 | } | |
3846 | next: | |
af4b6b8e CY |
3847 | if (cur_lblock + nr_pblocks >= sis->max) |
3848 | nr_pblocks = sis->max - cur_lblock; | |
3849 | ||
3850 | if (cur_lblock) { /* exclude the header page */ | |
3851 | if (pblock < lowest_pblock) | |
3852 | lowest_pblock = pblock; | |
3853 | if (pblock + nr_pblocks - 1 > highest_pblock) | |
3854 | highest_pblock = pblock + nr_pblocks - 1; | |
3855 | } | |
3856 | ||
3857 | /* | |
3858 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3859 | */ | |
3860 | ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock); | |
3861 | if (ret < 0) | |
3862 | goto out; | |
3863 | nr_extents += ret; | |
3864 | cur_lblock += nr_pblocks; | |
3865 | } | |
3866 | ret = nr_extents; | |
3867 | *span = 1 + highest_pblock - lowest_pblock; | |
3868 | if (cur_lblock == 0) | |
3869 | cur_lblock = 1; /* force Empty message */ | |
3870 | sis->max = cur_lblock; | |
3871 | sis->pages = cur_lblock - 1; | |
3872 | sis->highest_bit = cur_lblock - 1; | |
3873 | out: | |
859fca6b CY |
3874 | if (not_aligned) |
3875 | f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(%u * N)", | |
3876 | not_aligned, blks_per_sec * F2FS_BLKSIZE); | |
af4b6b8e | 3877 | return ret; |
af4b6b8e CY |
3878 | } |
3879 | ||
4969c06a JK |
3880 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, |
3881 | sector_t *span) | |
3882 | { | |
3883 | struct inode *inode = file_inode(file); | |
3884 | int ret; | |
3885 | ||
3886 | if (!S_ISREG(inode->i_mode)) | |
3887 | return -EINVAL; | |
3888 | ||
3889 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3890 | return -EROFS; | |
3891 | ||
d927ccfc SK |
3892 | if (f2fs_lfs_mode(F2FS_I_SB(inode))) { |
3893 | f2fs_err(F2FS_I_SB(inode), | |
3894 | "Swapfile not supported in LFS mode"); | |
3895 | return -EINVAL; | |
3896 | } | |
3897 | ||
4969c06a JK |
3898 | ret = f2fs_convert_inline_inode(inode); |
3899 | if (ret) | |
3900 | return ret; | |
3901 | ||
78134d03 | 3902 | if (!f2fs_disable_compressed_file(inode)) |
4c8ff709 CY |
3903 | return -EINVAL; |
3904 | ||
0b979f1b CY |
3905 | f2fs_precache_extents(inode); |
3906 | ||
3e5e479a CY |
3907 | ret = check_swap_activate(sis, file, span); |
3908 | if (ret < 0) | |
4969c06a JK |
3909 | return ret; |
3910 | ||
3911 | set_inode_flag(inode, FI_PIN_FILE); | |
4969c06a | 3912 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3e5e479a | 3913 | return ret; |
4969c06a JK |
3914 | } |
3915 | ||
3916 | static void f2fs_swap_deactivate(struct file *file) | |
3917 | { | |
3918 | struct inode *inode = file_inode(file); | |
3919 | ||
3920 | clear_inode_flag(inode, FI_PIN_FILE); | |
3921 | } | |
3922 | #else | |
3923 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3924 | sector_t *span) | |
3925 | { | |
3926 | return -EOPNOTSUPP; | |
3927 | } | |
3928 | ||
3929 | static void f2fs_swap_deactivate(struct file *file) | |
3930 | { | |
3931 | } | |
3932 | #endif | |
3933 | ||
eb47b800 JK |
3934 | const struct address_space_operations f2fs_dblock_aops = { |
3935 | .readpage = f2fs_read_data_page, | |
23323196 | 3936 | .readahead = f2fs_readahead, |
eb47b800 JK |
3937 | .writepage = f2fs_write_data_page, |
3938 | .writepages = f2fs_write_data_pages, | |
3939 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 3940 | .write_end = f2fs_write_end, |
eb47b800 | 3941 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
3942 | .invalidatepage = f2fs_invalidate_page, |
3943 | .releasepage = f2fs_release_page, | |
a1e09b03 | 3944 | .direct_IO = noop_direct_IO, |
c01e54b7 | 3945 | .bmap = f2fs_bmap, |
4969c06a JK |
3946 | .swap_activate = f2fs_swap_activate, |
3947 | .swap_deactivate = f2fs_swap_deactivate, | |
5b7a487c WG |
3948 | #ifdef CONFIG_MIGRATION |
3949 | .migratepage = f2fs_migrate_page, | |
3950 | #endif | |
eb47b800 | 3951 | }; |
6dbb1796 | 3952 | |
5ec2d99d | 3953 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
3954 | { |
3955 | struct address_space *mapping = page_mapping(page); | |
3956 | unsigned long flags; | |
3957 | ||
3958 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 3959 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
3960 | PAGECACHE_TAG_DIRTY); |
3961 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
3962 | } | |
3963 | ||
6dbb1796 EB |
3964 | int __init f2fs_init_post_read_processing(void) |
3965 | { | |
95ae251f EB |
3966 | bio_post_read_ctx_cache = |
3967 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
3968 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
3969 | if (!bio_post_read_ctx_cache) |
3970 | goto fail; | |
3971 | bio_post_read_ctx_pool = | |
3972 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
3973 | bio_post_read_ctx_cache); | |
3974 | if (!bio_post_read_ctx_pool) | |
3975 | goto fail_free_cache; | |
3976 | return 0; | |
3977 | ||
3978 | fail_free_cache: | |
3979 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3980 | fail: | |
3981 | return -ENOMEM; | |
3982 | } | |
3983 | ||
0b20fcec | 3984 | void f2fs_destroy_post_read_processing(void) |
6dbb1796 EB |
3985 | { |
3986 | mempool_destroy(bio_post_read_ctx_pool); | |
3987 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3988 | } | |
0b20fcec | 3989 | |
4c8ff709 CY |
3990 | int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) |
3991 | { | |
3992 | if (!f2fs_sb_has_encrypt(sbi) && | |
3993 | !f2fs_sb_has_verity(sbi) && | |
3994 | !f2fs_sb_has_compression(sbi)) | |
3995 | return 0; | |
3996 | ||
3997 | sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", | |
3998 | WQ_UNBOUND | WQ_HIGHPRI, | |
3999 | num_online_cpus()); | |
4000 | if (!sbi->post_read_wq) | |
4001 | return -ENOMEM; | |
4002 | return 0; | |
4003 | } | |
4004 | ||
4005 | void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) | |
4006 | { | |
4007 | if (sbi->post_read_wq) | |
4008 | destroy_workqueue(sbi->post_read_wq); | |
4009 | } | |
4010 | ||
0b20fcec CY |
4011 | int __init f2fs_init_bio_entry_cache(void) |
4012 | { | |
98510003 | 4013 | bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab", |
0b20fcec CY |
4014 | sizeof(struct bio_entry)); |
4015 | if (!bio_entry_slab) | |
4016 | return -ENOMEM; | |
4017 | return 0; | |
4018 | } | |
4019 | ||
f543805f | 4020 | void f2fs_destroy_bio_entry_cache(void) |
0b20fcec CY |
4021 | { |
4022 | kmem_cache_destroy(bio_entry_slab); | |
4023 | } | |
1517c1a7 EB |
4024 | |
4025 | static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, | |
4026 | unsigned int flags, struct iomap *iomap, | |
4027 | struct iomap *srcmap) | |
4028 | { | |
4029 | struct f2fs_map_blocks map = {}; | |
4030 | pgoff_t next_pgofs = 0; | |
4031 | int err; | |
4032 | ||
4033 | map.m_lblk = bytes_to_blks(inode, offset); | |
4034 | map.m_len = bytes_to_blks(inode, offset + length - 1) - map.m_lblk + 1; | |
4035 | map.m_next_pgofs = &next_pgofs; | |
4036 | map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint); | |
4037 | if (flags & IOMAP_WRITE) | |
4038 | map.m_may_create = true; | |
4039 | ||
4040 | err = f2fs_map_blocks(inode, &map, flags & IOMAP_WRITE, | |
4041 | F2FS_GET_BLOCK_DIO); | |
4042 | if (err) | |
4043 | return err; | |
4044 | ||
4045 | iomap->offset = blks_to_bytes(inode, map.m_lblk); | |
4046 | ||
4047 | if (map.m_flags & (F2FS_MAP_MAPPED | F2FS_MAP_UNWRITTEN)) { | |
4048 | iomap->length = blks_to_bytes(inode, map.m_len); | |
4049 | if (map.m_flags & F2FS_MAP_MAPPED) { | |
4050 | iomap->type = IOMAP_MAPPED; | |
4051 | iomap->flags |= IOMAP_F_MERGED; | |
4052 | } else { | |
4053 | iomap->type = IOMAP_UNWRITTEN; | |
4054 | } | |
4055 | if (WARN_ON_ONCE(!__is_valid_data_blkaddr(map.m_pblk))) | |
4056 | return -EINVAL; | |
4057 | ||
4058 | iomap->bdev = map.m_bdev; | |
4059 | iomap->addr = blks_to_bytes(inode, map.m_pblk); | |
4060 | } else { | |
4061 | iomap->length = blks_to_bytes(inode, next_pgofs) - | |
4062 | iomap->offset; | |
4063 | iomap->type = IOMAP_HOLE; | |
4064 | iomap->addr = IOMAP_NULL_ADDR; | |
4065 | } | |
4066 | ||
4067 | if (map.m_flags & F2FS_MAP_NEW) | |
4068 | iomap->flags |= IOMAP_F_NEW; | |
4069 | if ((inode->i_state & I_DIRTY_DATASYNC) || | |
4070 | offset + length > i_size_read(inode)) | |
4071 | iomap->flags |= IOMAP_F_DIRTY; | |
4072 | ||
4073 | return 0; | |
4074 | } | |
4075 | ||
4076 | const struct iomap_ops f2fs_iomap_ops = { | |
4077 | .iomap_begin = f2fs_iomap_begin, | |
4078 | }; |