Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
eb47b800 JK |
3 | * fs/f2fs/data.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
eb47b800 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/buffer_head.h> | |
11 | #include <linux/mpage.h> | |
12 | #include <linux/writeback.h> | |
13 | #include <linux/backing-dev.h> | |
8f46dcae | 14 | #include <linux/pagevec.h> |
eb47b800 JK |
15 | #include <linux/blkdev.h> |
16 | #include <linux/bio.h> | |
27aacd28 | 17 | #include <linux/blk-crypto.h> |
4969c06a | 18 | #include <linux/swap.h> |
690e4a3e | 19 | #include <linux/prefetch.h> |
e2e40f2c | 20 | #include <linux/uio.h> |
f1e88660 | 21 | #include <linux/cleancache.h> |
174cd4b1 | 22 | #include <linux/sched/signal.h> |
10c5db28 | 23 | #include <linux/fiemap.h> |
eb47b800 JK |
24 | |
25 | #include "f2fs.h" | |
26 | #include "node.h" | |
27 | #include "segment.h" | |
848753aa | 28 | #include <trace/events/f2fs.h> |
eb47b800 | 29 | |
6dbb1796 EB |
30 | #define NUM_PREALLOC_POST_READ_CTXS 128 |
31 | ||
32 | static struct kmem_cache *bio_post_read_ctx_cache; | |
0b20fcec | 33 | static struct kmem_cache *bio_entry_slab; |
6dbb1796 | 34 | static mempool_t *bio_post_read_ctx_pool; |
f543805f CY |
35 | static struct bio_set f2fs_bioset; |
36 | ||
37 | #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE | |
38 | ||
39 | int __init f2fs_init_bioset(void) | |
40 | { | |
41 | if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, | |
42 | 0, BIOSET_NEED_BVECS)) | |
43 | return -ENOMEM; | |
44 | return 0; | |
45 | } | |
46 | ||
47 | void f2fs_destroy_bioset(void) | |
48 | { | |
49 | bioset_exit(&f2fs_bioset); | |
50 | } | |
51 | ||
36951b38 CY |
52 | static bool __is_cp_guaranteed(struct page *page) |
53 | { | |
54 | struct address_space *mapping = page->mapping; | |
55 | struct inode *inode; | |
56 | struct f2fs_sb_info *sbi; | |
57 | ||
58 | if (!mapping) | |
59 | return false; | |
60 | ||
4c8ff709 CY |
61 | if (f2fs_is_compressed_page(page)) |
62 | return false; | |
63 | ||
36951b38 CY |
64 | inode = mapping->host; |
65 | sbi = F2FS_I_SB(inode); | |
66 | ||
67 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
a87aff1d | 68 | inode->i_ino == F2FS_NODE_INO(sbi) || |
36951b38 | 69 | S_ISDIR(inode->i_mode) || |
e7a4feb0 | 70 | (S_ISREG(inode->i_mode) && |
af033b2a | 71 | (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || |
36951b38 CY |
72 | is_cold_data(page)) |
73 | return true; | |
74 | return false; | |
75 | } | |
76 | ||
5f9abab4 JK |
77 | static enum count_type __read_io_type(struct page *page) |
78 | { | |
4969c06a | 79 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
80 | |
81 | if (mapping) { | |
82 | struct inode *inode = mapping->host; | |
83 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
84 | ||
85 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
86 | return F2FS_RD_META; | |
87 | ||
88 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
89 | return F2FS_RD_NODE; | |
90 | } | |
91 | return F2FS_RD_DATA; | |
92 | } | |
93 | ||
6dbb1796 EB |
94 | /* postprocessing steps for read bios */ |
95 | enum bio_post_read_step { | |
7f59b277 EB |
96 | #ifdef CONFIG_FS_ENCRYPTION |
97 | STEP_DECRYPT = 1 << 0, | |
98 | #else | |
99 | STEP_DECRYPT = 0, /* compile out the decryption-related code */ | |
100 | #endif | |
101 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
102 | STEP_DECOMPRESS = 1 << 1, | |
103 | #else | |
104 | STEP_DECOMPRESS = 0, /* compile out the decompression-related code */ | |
105 | #endif | |
106 | #ifdef CONFIG_FS_VERITY | |
107 | STEP_VERITY = 1 << 2, | |
108 | #else | |
109 | STEP_VERITY = 0, /* compile out the verity-related code */ | |
110 | #endif | |
6dbb1796 EB |
111 | }; |
112 | ||
113 | struct bio_post_read_ctx { | |
114 | struct bio *bio; | |
4c8ff709 | 115 | struct f2fs_sb_info *sbi; |
6dbb1796 | 116 | struct work_struct work; |
6dbb1796 EB |
117 | unsigned int enabled_steps; |
118 | }; | |
119 | ||
7f59b277 | 120 | static void f2fs_finish_read_bio(struct bio *bio) |
93dfe2ac | 121 | { |
6dbb1796 | 122 | struct bio_vec *bv; |
6dc4f100 | 123 | struct bvec_iter_all iter_all; |
93dfe2ac | 124 | |
7f59b277 EB |
125 | /* |
126 | * Update and unlock the bio's pagecache pages, and put the | |
127 | * decompression context for any compressed pages. | |
128 | */ | |
2b070cfe | 129 | bio_for_each_segment_all(bv, bio, iter_all) { |
7f59b277 | 130 | struct page *page = bv->bv_page; |
6dbb1796 | 131 | |
7f59b277 EB |
132 | if (f2fs_is_compressed_page(page)) { |
133 | if (bio->bi_status) | |
134 | f2fs_end_read_compressed_page(page, true); | |
135 | f2fs_put_page_dic(page); | |
4c8ff709 CY |
136 | continue; |
137 | } | |
4c8ff709 | 138 | |
7f59b277 | 139 | /* PG_error was set if decryption or verity failed. */ |
6dbb1796 EB |
140 | if (bio->bi_status || PageError(page)) { |
141 | ClearPageUptodate(page); | |
fb7d70db JK |
142 | /* will re-read again later */ |
143 | ClearPageError(page); | |
6dbb1796 EB |
144 | } else { |
145 | SetPageUptodate(page); | |
146 | } | |
5f9abab4 | 147 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
148 | unlock_page(page); |
149 | } | |
79bbefb1 | 150 | |
7f59b277 EB |
151 | if (bio->bi_private) |
152 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
153 | bio_put(bio); | |
4c8ff709 | 154 | } |
4c8ff709 | 155 | |
7f59b277 | 156 | static void f2fs_verify_bio(struct work_struct *work) |
6dbb1796 EB |
157 | { |
158 | struct bio_post_read_ctx *ctx = | |
159 | container_of(work, struct bio_post_read_ctx, work); | |
644c8c92 | 160 | struct bio *bio = ctx->bio; |
7f59b277 | 161 | bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS); |
644c8c92 EB |
162 | |
163 | /* | |
164 | * fsverity_verify_bio() may call readpages() again, and while verity | |
7f59b277 EB |
165 | * will be disabled for this, decryption and/or decompression may still |
166 | * be needed, resulting in another bio_post_read_ctx being allocated. | |
167 | * So to prevent deadlocks we need to release the current ctx to the | |
168 | * mempool first. This assumes that verity is the last post-read step. | |
644c8c92 EB |
169 | */ |
170 | mempool_free(ctx, bio_post_read_ctx_pool); | |
171 | bio->bi_private = NULL; | |
6dbb1796 | 172 | |
7f59b277 EB |
173 | /* |
174 | * Verify the bio's pages with fs-verity. Exclude compressed pages, | |
175 | * as those were handled separately by f2fs_end_read_compressed_page(). | |
176 | */ | |
177 | if (may_have_compressed_pages) { | |
178 | struct bio_vec *bv; | |
179 | struct bvec_iter_all iter_all; | |
180 | ||
181 | bio_for_each_segment_all(bv, bio, iter_all) { | |
182 | struct page *page = bv->bv_page; | |
183 | ||
184 | if (!f2fs_is_compressed_page(page) && | |
185 | !PageError(page) && !fsverity_verify_page(page)) | |
186 | SetPageError(page); | |
187 | } | |
188 | } else { | |
189 | fsverity_verify_bio(bio); | |
4c8ff709 | 190 | } |
6dbb1796 | 191 | |
7f59b277 | 192 | f2fs_finish_read_bio(bio); |
6dbb1796 EB |
193 | } |
194 | ||
7f59b277 EB |
195 | /* |
196 | * If the bio's data needs to be verified with fs-verity, then enqueue the | |
197 | * verity work for the bio. Otherwise finish the bio now. | |
198 | * | |
199 | * Note that to avoid deadlocks, the verity work can't be done on the | |
200 | * decryption/decompression workqueue. This is because verifying the data pages | |
201 | * can involve reading verity metadata pages from the file, and these verity | |
202 | * metadata pages may be encrypted and/or compressed. | |
203 | */ | |
204 | static void f2fs_verify_and_finish_bio(struct bio *bio) | |
95ae251f | 205 | { |
7f59b277 | 206 | struct bio_post_read_ctx *ctx = bio->bi_private; |
4c8ff709 | 207 | |
7f59b277 EB |
208 | if (ctx && (ctx->enabled_steps & STEP_VERITY)) { |
209 | INIT_WORK(&ctx->work, f2fs_verify_bio); | |
4c8ff709 | 210 | fsverity_enqueue_verify_work(&ctx->work); |
7f59b277 EB |
211 | } else { |
212 | f2fs_finish_read_bio(bio); | |
4c8ff709 | 213 | } |
4c8ff709 | 214 | } |
95ae251f | 215 | |
7f59b277 EB |
216 | /* |
217 | * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last | |
218 | * remaining page was read by @ctx->bio. | |
219 | * | |
220 | * Note that a bio may span clusters (even a mix of compressed and uncompressed | |
221 | * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates | |
222 | * that the bio includes at least one compressed page. The actual decompression | |
223 | * is done on a per-cluster basis, not a per-bio basis. | |
224 | */ | |
225 | static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx) | |
6dbb1796 | 226 | { |
7f59b277 EB |
227 | struct bio_vec *bv; |
228 | struct bvec_iter_all iter_all; | |
229 | bool all_compressed = true; | |
4c8ff709 | 230 | |
7f59b277 EB |
231 | bio_for_each_segment_all(bv, ctx->bio, iter_all) { |
232 | struct page *page = bv->bv_page; | |
4c8ff709 | 233 | |
7f59b277 EB |
234 | /* PG_error was set if decryption failed. */ |
235 | if (f2fs_is_compressed_page(page)) | |
236 | f2fs_end_read_compressed_page(page, PageError(page)); | |
237 | else | |
238 | all_compressed = false; | |
6dbb1796 | 239 | } |
4c8ff709 | 240 | |
7f59b277 EB |
241 | /* |
242 | * Optimization: if all the bio's pages are compressed, then scheduling | |
243 | * the per-bio verity work is unnecessary, as verity will be fully | |
244 | * handled at the compression cluster level. | |
245 | */ | |
246 | if (all_compressed) | |
247 | ctx->enabled_steps &= ~STEP_VERITY; | |
6dbb1796 EB |
248 | } |
249 | ||
7f59b277 | 250 | static void f2fs_post_read_work(struct work_struct *work) |
6dbb1796 | 251 | { |
7f59b277 EB |
252 | struct bio_post_read_ctx *ctx = |
253 | container_of(work, struct bio_post_read_ctx, work); | |
254 | ||
255 | if (ctx->enabled_steps & STEP_DECRYPT) | |
256 | fscrypt_decrypt_bio(ctx->bio); | |
257 | ||
258 | if (ctx->enabled_steps & STEP_DECOMPRESS) | |
259 | f2fs_handle_step_decompress(ctx); | |
260 | ||
261 | f2fs_verify_and_finish_bio(ctx->bio); | |
6dbb1796 EB |
262 | } |
263 | ||
264 | static void f2fs_read_end_io(struct bio *bio) | |
265 | { | |
c45d6002 | 266 | struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); |
7f59b277 | 267 | struct bio_post_read_ctx *ctx = bio->bi_private; |
c45d6002 CY |
268 | |
269 | if (time_to_inject(sbi, FAULT_READ_IO)) { | |
270 | f2fs_show_injection_info(sbi, FAULT_READ_IO); | |
4e4cbee9 | 271 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 272 | } |
8b038c70 | 273 | |
7f59b277 EB |
274 | if (bio->bi_status) { |
275 | f2fs_finish_read_bio(bio); | |
6dbb1796 | 276 | return; |
f1e88660 | 277 | } |
6dbb1796 | 278 | |
7f59b277 EB |
279 | if (ctx && (ctx->enabled_steps & (STEP_DECRYPT | STEP_DECOMPRESS))) { |
280 | INIT_WORK(&ctx->work, f2fs_post_read_work); | |
281 | queue_work(ctx->sbi->post_read_wq, &ctx->work); | |
282 | } else { | |
283 | f2fs_verify_and_finish_bio(bio); | |
284 | } | |
f1e88660 JK |
285 | } |
286 | ||
4246a0b6 | 287 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 288 | { |
1b1f559f | 289 | struct f2fs_sb_info *sbi = bio->bi_private; |
f568849e | 290 | struct bio_vec *bvec; |
6dc4f100 | 291 | struct bvec_iter_all iter_all; |
93dfe2ac | 292 | |
6f5c2ed0 | 293 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
c45d6002 | 294 | f2fs_show_injection_info(sbi, FAULT_WRITE_IO); |
6f5c2ed0 CY |
295 | bio->bi_status = BLK_STS_IOERR; |
296 | } | |
297 | ||
2b070cfe | 298 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 299 | struct page *page = bvec->bv_page; |
36951b38 | 300 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 301 | |
0a595eba JK |
302 | if (IS_DUMMY_WRITTEN_PAGE(page)) { |
303 | set_page_private(page, (unsigned long)NULL); | |
304 | ClearPagePrivate(page); | |
305 | unlock_page(page); | |
306 | mempool_free(page, sbi->write_io_dummy); | |
307 | ||
4e4cbee9 | 308 | if (unlikely(bio->bi_status)) |
0a595eba JK |
309 | f2fs_stop_checkpoint(sbi, true); |
310 | continue; | |
311 | } | |
312 | ||
d2d0727b | 313 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 314 | |
4c8ff709 CY |
315 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
316 | if (f2fs_is_compressed_page(page)) { | |
317 | f2fs_compress_write_end_io(bio, page); | |
318 | continue; | |
319 | } | |
320 | #endif | |
321 | ||
4e4cbee9 | 322 | if (unlikely(bio->bi_status)) { |
5114a97a | 323 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
324 | if (type == F2FS_WB_CP_DATA) |
325 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 326 | } |
7dff55d2 YH |
327 | |
328 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
329 | page->index != nid_of_node(page)); | |
330 | ||
36951b38 | 331 | dec_page_count(sbi, type); |
50fa53ec CY |
332 | if (f2fs_in_warm_node_list(sbi, page)) |
333 | f2fs_del_fsync_node_entry(sbi, page); | |
36951b38 | 334 | clear_cold_data(page); |
93dfe2ac | 335 | end_page_writeback(page); |
f568849e | 336 | } |
36951b38 | 337 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 338 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
339 | wake_up(&sbi->cp_wait); |
340 | ||
341 | bio_put(bio); | |
342 | } | |
343 | ||
3c62be17 JK |
344 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
345 | block_t blk_addr, struct bio *bio) | |
346 | { | |
347 | struct block_device *bdev = sbi->sb->s_bdev; | |
348 | int i; | |
349 | ||
0916878d DLM |
350 | if (f2fs_is_multi_device(sbi)) { |
351 | for (i = 0; i < sbi->s_ndevs; i++) { | |
352 | if (FDEV(i).start_blk <= blk_addr && | |
353 | FDEV(i).end_blk >= blk_addr) { | |
354 | blk_addr -= FDEV(i).start_blk; | |
355 | bdev = FDEV(i).bdev; | |
356 | break; | |
357 | } | |
3c62be17 JK |
358 | } |
359 | } | |
360 | if (bio) { | |
74d46992 | 361 | bio_set_dev(bio, bdev); |
3c62be17 JK |
362 | bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |
363 | } | |
364 | return bdev; | |
365 | } | |
366 | ||
367 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
368 | { | |
369 | int i; | |
370 | ||
0916878d DLM |
371 | if (!f2fs_is_multi_device(sbi)) |
372 | return 0; | |
373 | ||
3c62be17 JK |
374 | for (i = 0; i < sbi->s_ndevs; i++) |
375 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
376 | return i; | |
377 | return 0; | |
378 | } | |
379 | ||
b757f6ed | 380 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 381 | { |
b757f6ed | 382 | struct f2fs_sb_info *sbi = fio->sbi; |
940a6d34 GZ |
383 | struct bio *bio; |
384 | ||
67883ade | 385 | bio = bio_alloc_bioset(GFP_NOIO, npages, &f2fs_bioset); |
940a6d34 | 386 | |
b757f6ed CY |
387 | f2fs_target_device(sbi, fio->new_blkaddr, bio); |
388 | if (is_read_io(fio->op)) { | |
0cdd3195 HL |
389 | bio->bi_end_io = f2fs_read_end_io; |
390 | bio->bi_private = NULL; | |
391 | } else { | |
392 | bio->bi_end_io = f2fs_write_end_io; | |
393 | bio->bi_private = sbi; | |
b757f6ed CY |
394 | bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, |
395 | fio->type, fio->temp); | |
0cdd3195 | 396 | } |
b757f6ed CY |
397 | if (fio->io_wbc) |
398 | wbc_init_bio(fio->io_wbc, bio); | |
940a6d34 GZ |
399 | |
400 | return bio; | |
401 | } | |
402 | ||
27aacd28 ST |
403 | static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode, |
404 | pgoff_t first_idx, | |
405 | const struct f2fs_io_info *fio, | |
406 | gfp_t gfp_mask) | |
407 | { | |
408 | /* | |
409 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
410 | * read/write raw data without encryption. | |
411 | */ | |
412 | if (!fio || !fio->encrypted_page) | |
413 | fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask); | |
414 | } | |
415 | ||
416 | static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode, | |
417 | pgoff_t next_idx, | |
418 | const struct f2fs_io_info *fio) | |
419 | { | |
420 | /* | |
421 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
422 | * read/write raw data without encryption. | |
423 | */ | |
424 | if (fio && fio->encrypted_page) | |
425 | return !bio_has_crypt_ctx(bio); | |
426 | ||
427 | return fscrypt_mergeable_bio(bio, inode, next_idx); | |
428 | } | |
429 | ||
4fc29c1a LT |
430 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
431 | struct bio *bio, enum page_type type) | |
f5730184 | 432 | { |
4fc29c1a | 433 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
434 | unsigned int start; |
435 | ||
0a595eba JK |
436 | if (type != DATA && type != NODE) |
437 | goto submit_io; | |
438 | ||
b0332a0f | 439 | if (f2fs_lfs_mode(sbi) && current->plug) |
3bb09a0e TY |
440 | blk_finish_plug(current->plug); |
441 | ||
39f71b7e | 442 | if (!F2FS_IO_ALIGNED(sbi)) |
8223ecc4 CY |
443 | goto submit_io; |
444 | ||
0a595eba JK |
445 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
446 | start %= F2FS_IO_SIZE(sbi); | |
447 | ||
448 | if (start == 0) | |
449 | goto submit_io; | |
450 | ||
451 | /* fill dummy pages */ | |
452 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
453 | struct page *page = | |
454 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 455 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
456 | f2fs_bug_on(sbi, !page); |
457 | ||
bc73a4b2 | 458 | zero_user_segment(page, 0, PAGE_SIZE); |
0a595eba | 459 | SetPagePrivate(page); |
e90027d2 | 460 | set_page_private(page, DUMMY_WRITTEN_PAGE); |
0a595eba JK |
461 | lock_page(page); |
462 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) | |
463 | f2fs_bug_on(sbi, 1); | |
464 | } | |
465 | /* | |
466 | * In the NODE case, we lose next block address chain. So, we | |
467 | * need to do checkpoint in f2fs_sync_file. | |
468 | */ | |
469 | if (type == NODE) | |
470 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 471 | } |
0a595eba | 472 | submit_io: |
554b5125 JK |
473 | if (is_read_io(bio_op(bio))) |
474 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
475 | else | |
476 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
4e49ea4a | 477 | submit_bio(bio); |
f5730184 JK |
478 | } |
479 | ||
4c8ff709 CY |
480 | void f2fs_submit_bio(struct f2fs_sb_info *sbi, |
481 | struct bio *bio, enum page_type type) | |
482 | { | |
483 | __submit_bio(sbi, bio, type); | |
484 | } | |
485 | ||
32b6aba8 | 486 | static void __attach_io_flag(struct f2fs_io_info *fio) |
da9953b7 JK |
487 | { |
488 | struct f2fs_sb_info *sbi = fio->sbi; | |
489 | unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1; | |
32b6aba8 JK |
490 | unsigned int io_flag, fua_flag, meta_flag; |
491 | ||
492 | if (fio->type == DATA) | |
493 | io_flag = sbi->data_io_flag; | |
494 | else if (fio->type == NODE) | |
495 | io_flag = sbi->node_io_flag; | |
496 | else | |
497 | return; | |
498 | ||
499 | fua_flag = io_flag & temp_mask; | |
500 | meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask; | |
501 | ||
da9953b7 | 502 | /* |
32b6aba8 | 503 | * data/node io flag bits per temp: |
da9953b7 JK |
504 | * REQ_META | REQ_FUA | |
505 | * 5 | 4 | 3 | 2 | 1 | 0 | | |
506 | * Cold | Warm | Hot | Cold | Warm | Hot | | |
507 | */ | |
da9953b7 JK |
508 | if ((1 << fio->temp) & meta_flag) |
509 | fio->op_flags |= REQ_META; | |
510 | if ((1 << fio->temp) & fua_flag) | |
511 | fio->op_flags |= REQ_FUA; | |
512 | } | |
513 | ||
458e6197 | 514 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 515 | { |
458e6197 | 516 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
517 | |
518 | if (!io->bio) | |
519 | return; | |
520 | ||
32b6aba8 | 521 | __attach_io_flag(fio); |
554b5125 JK |
522 | bio_set_op_attrs(io->bio, fio->op, fio->op_flags); |
523 | ||
04d328de | 524 | if (is_read_io(fio->op)) |
554b5125 | 525 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 526 | else |
554b5125 | 527 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 528 | |
4fc29c1a | 529 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
530 | io->bio = NULL; |
531 | } | |
532 | ||
8648de2c | 533 | static bool __has_merged_page(struct bio *bio, struct inode *inode, |
bab475c5 | 534 | struct page *page, nid_t ino) |
0fd785eb | 535 | { |
0fd785eb | 536 | struct bio_vec *bvec; |
6dc4f100 | 537 | struct bvec_iter_all iter_all; |
0fd785eb | 538 | |
8648de2c | 539 | if (!bio) |
0fd785eb | 540 | return false; |
0c3a5797 | 541 | |
bab475c5 | 542 | if (!inode && !page && !ino) |
0c3a5797 | 543 | return true; |
0fd785eb | 544 | |
8648de2c | 545 | bio_for_each_segment_all(bvec, bio, iter_all) { |
4c8ff709 | 546 | struct page *target = bvec->bv_page; |
0fd785eb | 547 | |
4c8ff709 | 548 | if (fscrypt_is_bounce_page(target)) { |
d2d0727b | 549 | target = fscrypt_pagecache_page(target); |
4c8ff709 CY |
550 | if (IS_ERR(target)) |
551 | continue; | |
552 | } | |
553 | if (f2fs_is_compressed_page(target)) { | |
554 | target = f2fs_compress_control_page(target); | |
555 | if (IS_ERR(target)) | |
556 | continue; | |
557 | } | |
0fd785eb | 558 | |
0c3a5797 CY |
559 | if (inode && inode == target->mapping->host) |
560 | return true; | |
bab475c5 CY |
561 | if (page && page == target) |
562 | return true; | |
0c3a5797 | 563 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 564 | return true; |
0fd785eb CY |
565 | } |
566 | ||
0fd785eb CY |
567 | return false; |
568 | } | |
569 | ||
b9109b0e | 570 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 571 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
572 | { |
573 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 574 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 575 | |
df0f8dc0 | 576 | down_write(&io->io_rwsem); |
458e6197 JK |
577 | |
578 | /* change META to META_FLUSH in the checkpoint procedure */ | |
579 | if (type >= META_FLUSH) { | |
580 | io->fio.type = META_FLUSH; | |
04d328de | 581 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 582 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 583 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 584 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
585 | } |
586 | __submit_merged_bio(io); | |
df0f8dc0 | 587 | up_write(&io->io_rwsem); |
93dfe2ac JK |
588 | } |
589 | ||
a912b54d | 590 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
591 | struct inode *inode, struct page *page, |
592 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 593 | { |
a912b54d | 594 | enum temp_type temp; |
1e771e83 | 595 | bool ret = true; |
a912b54d JK |
596 | |
597 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
598 | if (!force) { |
599 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
600 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 601 | |
1e771e83 | 602 | down_read(&io->io_rwsem); |
8648de2c | 603 | ret = __has_merged_page(io->bio, inode, page, ino); |
1e771e83 YS |
604 | up_read(&io->io_rwsem); |
605 | } | |
606 | if (ret) | |
607 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
608 | |
609 | /* TODO: use HOT temp only for meta pages now. */ | |
610 | if (type >= META) | |
611 | break; | |
612 | } | |
0c3a5797 CY |
613 | } |
614 | ||
b9109b0e | 615 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 616 | { |
adcc00f7 | 617 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
618 | } |
619 | ||
b9109b0e | 620 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
621 | struct inode *inode, struct page *page, |
622 | nid_t ino, enum page_type type) | |
0c3a5797 | 623 | { |
bab475c5 | 624 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
625 | } |
626 | ||
b9109b0e | 627 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 628 | { |
b9109b0e JK |
629 | f2fs_submit_merged_write(sbi, DATA); |
630 | f2fs_submit_merged_write(sbi, NODE); | |
631 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
632 | } |
633 | ||
93dfe2ac JK |
634 | /* |
635 | * Fill the locked page with data located in the block address. | |
771a9a71 | 636 | * A caller needs to unlock the page on failure. |
93dfe2ac | 637 | */ |
05ca3632 | 638 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 639 | { |
93dfe2ac | 640 | struct bio *bio; |
0b81d077 JK |
641 | struct page *page = fio->encrypted_page ? |
642 | fio->encrypted_page : fio->page; | |
93dfe2ac | 643 | |
c9b60788 | 644 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
93770ab7 CY |
645 | fio->is_por ? META_POR : (__is_meta_io(fio) ? |
646 | META_GENERIC : DATA_GENERIC_ENHANCE))) | |
10f966bb | 647 | return -EFSCORRUPTED; |
c9b60788 | 648 | |
2ace38e0 | 649 | trace_f2fs_submit_page_bio(page, fio); |
93dfe2ac JK |
650 | |
651 | /* Allocate a new bio */ | |
b757f6ed | 652 | bio = __bio_alloc(fio, 1); |
93dfe2ac | 653 | |
27aacd28 ST |
654 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
655 | fio->page->index, fio, GFP_NOIO); | |
656 | ||
09cbfeaf | 657 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 658 | bio_put(bio); |
93dfe2ac JK |
659 | return -EFAULT; |
660 | } | |
78efac53 CY |
661 | |
662 | if (fio->io_wbc && !is_read_io(fio->op)) | |
34e51a5e | 663 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
78efac53 | 664 | |
b7b911d5 | 665 | __attach_io_flag(fio); |
04d328de | 666 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 667 | |
5f9abab4 JK |
668 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
669 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
670 | |
671 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
672 | return 0; |
673 | } | |
674 | ||
8896cbdf CY |
675 | static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, |
676 | block_t last_blkaddr, block_t cur_blkaddr) | |
677 | { | |
10208567 JK |
678 | if (unlikely(sbi->max_io_bytes && |
679 | bio->bi_iter.bi_size >= sbi->max_io_bytes)) | |
680 | return false; | |
8896cbdf CY |
681 | if (last_blkaddr + 1 != cur_blkaddr) |
682 | return false; | |
309dca30 | 683 | return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL); |
8896cbdf CY |
684 | } |
685 | ||
686 | static bool io_type_is_mergeable(struct f2fs_bio_info *io, | |
687 | struct f2fs_io_info *fio) | |
688 | { | |
689 | if (io->fio.op != fio->op) | |
690 | return false; | |
691 | return io->fio.op_flags == fio->op_flags; | |
692 | } | |
693 | ||
694 | static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, | |
695 | struct f2fs_bio_info *io, | |
696 | struct f2fs_io_info *fio, | |
697 | block_t last_blkaddr, | |
698 | block_t cur_blkaddr) | |
699 | { | |
c72db71e CY |
700 | if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { |
701 | unsigned int filled_blocks = | |
702 | F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); | |
703 | unsigned int io_size = F2FS_IO_SIZE(sbi); | |
704 | unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; | |
705 | ||
706 | /* IOs in bio is aligned and left space of vectors is not enough */ | |
707 | if (!(filled_blocks % io_size) && left_vecs < io_size) | |
708 | return false; | |
709 | } | |
8896cbdf CY |
710 | if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) |
711 | return false; | |
712 | return io_type_is_mergeable(io, fio); | |
713 | } | |
714 | ||
0b20fcec CY |
715 | static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, |
716 | struct page *page, enum temp_type temp) | |
717 | { | |
718 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
719 | struct bio_entry *be; | |
720 | ||
721 | be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS); | |
722 | be->bio = bio; | |
723 | bio_get(bio); | |
724 | ||
725 | if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE) | |
726 | f2fs_bug_on(sbi, 1); | |
727 | ||
728 | down_write(&io->bio_list_lock); | |
729 | list_add_tail(&be->list, &io->bio_list); | |
730 | up_write(&io->bio_list_lock); | |
731 | } | |
732 | ||
733 | static void del_bio_entry(struct bio_entry *be) | |
734 | { | |
735 | list_del(&be->list); | |
736 | kmem_cache_free(bio_entry_slab, be); | |
737 | } | |
738 | ||
27aacd28 | 739 | static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio, |
0b20fcec CY |
740 | struct page *page) |
741 | { | |
27aacd28 | 742 | struct f2fs_sb_info *sbi = fio->sbi; |
0b20fcec CY |
743 | enum temp_type temp; |
744 | bool found = false; | |
745 | int ret = -EAGAIN; | |
746 | ||
747 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
748 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
749 | struct list_head *head = &io->bio_list; | |
750 | struct bio_entry *be; | |
751 | ||
752 | down_write(&io->bio_list_lock); | |
753 | list_for_each_entry(be, head, list) { | |
754 | if (be->bio != *bio) | |
755 | continue; | |
756 | ||
757 | found = true; | |
758 | ||
27aacd28 ST |
759 | f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio, |
760 | *fio->last_block, | |
761 | fio->new_blkaddr)); | |
762 | if (f2fs_crypt_mergeable_bio(*bio, | |
763 | fio->page->mapping->host, | |
764 | fio->page->index, fio) && | |
765 | bio_add_page(*bio, page, PAGE_SIZE, 0) == | |
766 | PAGE_SIZE) { | |
0b20fcec CY |
767 | ret = 0; |
768 | break; | |
769 | } | |
770 | ||
27aacd28 | 771 | /* page can't be merged into bio; submit the bio */ |
0b20fcec CY |
772 | del_bio_entry(be); |
773 | __submit_bio(sbi, *bio, DATA); | |
774 | break; | |
775 | } | |
776 | up_write(&io->bio_list_lock); | |
777 | } | |
778 | ||
779 | if (ret) { | |
780 | bio_put(*bio); | |
781 | *bio = NULL; | |
782 | } | |
783 | ||
784 | return ret; | |
785 | } | |
786 | ||
787 | void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, | |
788 | struct bio **bio, struct page *page) | |
789 | { | |
790 | enum temp_type temp; | |
791 | bool found = false; | |
792 | struct bio *target = bio ? *bio : NULL; | |
793 | ||
794 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
795 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
796 | struct list_head *head = &io->bio_list; | |
797 | struct bio_entry *be; | |
798 | ||
799 | if (list_empty(head)) | |
800 | continue; | |
801 | ||
802 | down_read(&io->bio_list_lock); | |
803 | list_for_each_entry(be, head, list) { | |
804 | if (target) | |
805 | found = (target == be->bio); | |
806 | else | |
807 | found = __has_merged_page(be->bio, NULL, | |
808 | page, 0); | |
809 | if (found) | |
810 | break; | |
811 | } | |
812 | up_read(&io->bio_list_lock); | |
813 | ||
814 | if (!found) | |
815 | continue; | |
816 | ||
817 | found = false; | |
818 | ||
819 | down_write(&io->bio_list_lock); | |
820 | list_for_each_entry(be, head, list) { | |
821 | if (target) | |
822 | found = (target == be->bio); | |
823 | else | |
824 | found = __has_merged_page(be->bio, NULL, | |
825 | page, 0); | |
826 | if (found) { | |
827 | target = be->bio; | |
828 | del_bio_entry(be); | |
829 | break; | |
830 | } | |
831 | } | |
832 | up_write(&io->bio_list_lock); | |
833 | } | |
834 | ||
835 | if (found) | |
836 | __submit_bio(sbi, target, DATA); | |
837 | if (bio && *bio) { | |
838 | bio_put(*bio); | |
839 | *bio = NULL; | |
840 | } | |
841 | } | |
842 | ||
8648de2c CY |
843 | int f2fs_merge_page_bio(struct f2fs_io_info *fio) |
844 | { | |
845 | struct bio *bio = *fio->bio; | |
846 | struct page *page = fio->encrypted_page ? | |
847 | fio->encrypted_page : fio->page; | |
848 | ||
849 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, | |
850 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
10f966bb | 851 | return -EFSCORRUPTED; |
8648de2c CY |
852 | |
853 | trace_f2fs_submit_page_bio(page, fio); | |
8648de2c | 854 | |
8896cbdf | 855 | if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, |
0b20fcec CY |
856 | fio->new_blkaddr)) |
857 | f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL); | |
8648de2c CY |
858 | alloc_new: |
859 | if (!bio) { | |
b757f6ed | 860 | bio = __bio_alloc(fio, BIO_MAX_PAGES); |
b7b911d5 | 861 | __attach_io_flag(fio); |
27aacd28 ST |
862 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
863 | fio->page->index, fio, GFP_NOIO); | |
8648de2c | 864 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
8648de2c | 865 | |
0b20fcec CY |
866 | add_bio_entry(fio->sbi, bio, page, fio->temp); |
867 | } else { | |
27aacd28 | 868 | if (add_ipu_page(fio, &bio, page)) |
0b20fcec | 869 | goto alloc_new; |
8648de2c CY |
870 | } |
871 | ||
872 | if (fio->io_wbc) | |
9637d517 | 873 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
8648de2c CY |
874 | |
875 | inc_page_count(fio->sbi, WB_DATA_TYPE(page)); | |
876 | ||
877 | *fio->last_block = fio->new_blkaddr; | |
878 | *fio->bio = bio; | |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
fe16efe6 | 883 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 884 | { |
05ca3632 | 885 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 886 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 887 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 888 | struct page *bio_page; |
93dfe2ac | 889 | |
b9109b0e | 890 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 891 | |
fb830fc5 CY |
892 | down_write(&io->io_rwsem); |
893 | next: | |
894 | if (fio->in_list) { | |
895 | spin_lock(&io->io_lock); | |
896 | if (list_empty(&io->io_list)) { | |
897 | spin_unlock(&io->io_lock); | |
fe16efe6 | 898 | goto out; |
fb830fc5 CY |
899 | } |
900 | fio = list_first_entry(&io->io_list, | |
901 | struct f2fs_io_info, list); | |
902 | list_del(&fio->list); | |
903 | spin_unlock(&io->io_lock); | |
904 | } | |
93dfe2ac | 905 | |
93770ab7 | 906 | verify_fio_blkaddr(fio); |
93dfe2ac | 907 | |
4c8ff709 CY |
908 | if (fio->encrypted_page) |
909 | bio_page = fio->encrypted_page; | |
910 | else if (fio->compressed_page) | |
911 | bio_page = fio->compressed_page; | |
912 | else | |
913 | bio_page = fio->page; | |
36951b38 | 914 | |
ebf7c522 TM |
915 | /* set submitted = true as a return value */ |
916 | fio->submitted = true; | |
d68f735b | 917 | |
b9109b0e | 918 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 919 | |
27aacd28 ST |
920 | if (io->bio && |
921 | (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio, | |
922 | fio->new_blkaddr) || | |
923 | !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host, | |
924 | bio_page->index, fio))) | |
458e6197 | 925 | __submit_merged_bio(io); |
93dfe2ac JK |
926 | alloc_new: |
927 | if (io->bio == NULL) { | |
8223ecc4 CY |
928 | if (F2FS_IO_ALIGNED(sbi) && |
929 | (fio->type == DATA || fio->type == NODE) && | |
0a595eba | 930 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { |
b9109b0e | 931 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
932 | fio->retry = true; |
933 | goto skip; | |
0a595eba | 934 | } |
b757f6ed | 935 | io->bio = __bio_alloc(fio, BIO_MAX_PAGES); |
27aacd28 ST |
936 | f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host, |
937 | bio_page->index, fio, GFP_NOIO); | |
458e6197 | 938 | io->fio = *fio; |
93dfe2ac JK |
939 | } |
940 | ||
a912b54d | 941 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 942 | __submit_merged_bio(io); |
93dfe2ac JK |
943 | goto alloc_new; |
944 | } | |
945 | ||
578c6478 | 946 | if (fio->io_wbc) |
34e51a5e | 947 | wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); |
578c6478 | 948 | |
7a9d7548 | 949 | io->last_block_in_bio = fio->new_blkaddr; |
fb830fc5 CY |
950 | |
951 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 952 | skip: |
fb830fc5 CY |
953 | if (fio->in_list) |
954 | goto next; | |
fe16efe6 | 955 | out: |
4354994f | 956 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
00e09c0b | 957 | !f2fs_is_checkpoint_ready(sbi)) |
5ce80586 | 958 | __submit_merged_bio(io); |
df0f8dc0 | 959 | up_write(&io->io_rwsem); |
93dfe2ac JK |
960 | } |
961 | ||
13ba41e3 | 962 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
95ae251f | 963 | unsigned nr_pages, unsigned op_flag, |
7f59b277 | 964 | pgoff_t first_idx, bool for_write) |
13ba41e3 JK |
965 | { |
966 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 967 | struct bio *bio; |
6dbb1796 EB |
968 | struct bio_post_read_ctx *ctx; |
969 | unsigned int post_read_steps = 0; | |
13ba41e3 | 970 | |
67883ade CH |
971 | bio = bio_alloc_bioset(for_write ? GFP_NOIO : GFP_KERNEL, |
972 | min_t(int, nr_pages, BIO_MAX_PAGES), | |
973 | &f2fs_bioset); | |
6dbb1796 | 974 | if (!bio) |
13ba41e3 | 975 | return ERR_PTR(-ENOMEM); |
27aacd28 ST |
976 | |
977 | f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); | |
978 | ||
13ba41e3 JK |
979 | f2fs_target_device(sbi, blkaddr, bio); |
980 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 981 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 982 | |
27aacd28 | 983 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
7f59b277 | 984 | post_read_steps |= STEP_DECRYPT; |
95ae251f | 985 | |
7f59b277 EB |
986 | if (f2fs_need_verity(inode, first_idx)) |
987 | post_read_steps |= STEP_VERITY; | |
988 | ||
989 | /* | |
990 | * STEP_DECOMPRESS is handled specially, since a compressed file might | |
991 | * contain both compressed and uncompressed clusters. We'll allocate a | |
992 | * bio_post_read_ctx if the file is compressed, but the caller is | |
993 | * responsible for enabling STEP_DECOMPRESS if it's actually needed. | |
994 | */ | |
995 | ||
996 | if (post_read_steps || f2fs_compressed_file(inode)) { | |
e8ce5749 | 997 | /* Due to the mempool, this never fails. */ |
6dbb1796 | 998 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); |
6dbb1796 | 999 | ctx->bio = bio; |
4c8ff709 | 1000 | ctx->sbi = sbi; |
6dbb1796 EB |
1001 | ctx->enabled_steps = post_read_steps; |
1002 | bio->bi_private = ctx; | |
6dbb1796 EB |
1003 | } |
1004 | ||
13ba41e3 JK |
1005 | return bio; |
1006 | } | |
1007 | ||
1008 | /* This can handle encryption stuffs */ | |
1009 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
b7973091 | 1010 | block_t blkaddr, int op_flags, bool for_write) |
13ba41e3 | 1011 | { |
93770ab7 CY |
1012 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1013 | struct bio *bio; | |
13ba41e3 | 1014 | |
b7973091 | 1015 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags, |
7f59b277 | 1016 | page->index, for_write); |
13ba41e3 JK |
1017 | if (IS_ERR(bio)) |
1018 | return PTR_ERR(bio); | |
1019 | ||
0ded69f6 JK |
1020 | /* wait for GCed page writeback via META_MAPPING */ |
1021 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
1022 | ||
13ba41e3 JK |
1023 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
1024 | bio_put(bio); | |
1025 | return -EFAULT; | |
1026 | } | |
fb7d70db | 1027 | ClearPageError(page); |
93770ab7 | 1028 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 1029 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
93770ab7 | 1030 | __submit_bio(sbi, bio, DATA); |
13ba41e3 JK |
1031 | return 0; |
1032 | } | |
1033 | ||
46008c6d CY |
1034 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
1035 | { | |
1036 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
1037 | __le32 *addr_array; | |
7a2af766 CY |
1038 | int base = 0; |
1039 | ||
1040 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
1041 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
1042 | |
1043 | /* Get physical address of data block */ | |
1044 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 1045 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
1046 | } |
1047 | ||
0a8165d7 | 1048 | /* |
eb47b800 JK |
1049 | * Lock ordering for the change of data block address: |
1050 | * ->data_page | |
1051 | * ->node_page | |
1052 | * update block addresses in the node page | |
1053 | */ | |
4d57b86d | 1054 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 1055 | { |
bae0ee7a | 1056 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1057 | __set_data_blkaddr(dn); |
1058 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 1059 | dn->node_changed = true; |
eb47b800 JK |
1060 | } |
1061 | ||
f28b3434 CY |
1062 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
1063 | { | |
1064 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 1065 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
1066 | f2fs_update_extent_cache(dn); |
1067 | } | |
1068 | ||
46008c6d | 1069 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 1070 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 1071 | { |
4081363f | 1072 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 1073 | int err; |
eb47b800 | 1074 | |
46008c6d CY |
1075 | if (!count) |
1076 | return 0; | |
1077 | ||
91942321 | 1078 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 1079 | return -EPERM; |
0abd675e CY |
1080 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1081 | return err; | |
eb47b800 | 1082 | |
46008c6d CY |
1083 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
1084 | dn->ofs_in_node, count); | |
1085 | ||
bae0ee7a | 1086 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1087 | |
1088 | for (; count > 0; dn->ofs_in_node++) { | |
a2ced1ce | 1089 | block_t blkaddr = f2fs_data_blkaddr(dn); |
46008c6d CY |
1090 | if (blkaddr == NULL_ADDR) { |
1091 | dn->data_blkaddr = NEW_ADDR; | |
1092 | __set_data_blkaddr(dn); | |
1093 | count--; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | if (set_page_dirty(dn->node_page)) | |
1098 | dn->node_changed = true; | |
eb47b800 JK |
1099 | return 0; |
1100 | } | |
1101 | ||
46008c6d | 1102 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 1103 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
1104 | { |
1105 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1106 | int ret; | |
1107 | ||
4d57b86d | 1108 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
1109 | dn->ofs_in_node = ofs_in_node; |
1110 | return ret; | |
1111 | } | |
1112 | ||
b600965c HL |
1113 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
1114 | { | |
1115 | bool need_put = dn->inode_page ? false : true; | |
1116 | int err; | |
1117 | ||
4d57b86d | 1118 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
1119 | if (err) |
1120 | return err; | |
a8865372 | 1121 | |
b600965c | 1122 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 1123 | err = f2fs_reserve_new_block(dn); |
a8865372 | 1124 | if (err || need_put) |
b600965c HL |
1125 | f2fs_put_dnode(dn); |
1126 | return err; | |
1127 | } | |
1128 | ||
759af1c9 | 1129 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 1130 | { |
a87aff1d | 1131 | struct extent_info ei = {0, 0, 0}; |
759af1c9 | 1132 | struct inode *inode = dn->inode; |
028a41e8 | 1133 | |
759af1c9 FL |
1134 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1135 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
1136 | return 0; | |
429511cd | 1137 | } |
028a41e8 | 1138 | |
759af1c9 | 1139 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
1140 | } |
1141 | ||
4d57b86d | 1142 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 1143 | int op_flags, bool for_write) |
eb47b800 | 1144 | { |
eb47b800 JK |
1145 | struct address_space *mapping = inode->i_mapping; |
1146 | struct dnode_of_data dn; | |
1147 | struct page *page; | |
e15882b6 | 1148 | struct extent_info ei = {0,0,0}; |
eb47b800 | 1149 | int err; |
4375a336 | 1150 | |
a56c7c6f | 1151 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
1152 | if (!page) |
1153 | return ERR_PTR(-ENOMEM); | |
1154 | ||
cb3bc9ee CY |
1155 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1156 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
93770ab7 CY |
1157 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
1158 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 1159 | err = -EFSCORRUPTED; |
93770ab7 CY |
1160 | goto put_err; |
1161 | } | |
cb3bc9ee CY |
1162 | goto got_it; |
1163 | } | |
1164 | ||
eb47b800 | 1165 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1166 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
1167 | if (err) |
1168 | goto put_err; | |
eb47b800 JK |
1169 | f2fs_put_dnode(&dn); |
1170 | ||
6bacf52f | 1171 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
1172 | err = -ENOENT; |
1173 | goto put_err; | |
650495de | 1174 | } |
93770ab7 CY |
1175 | if (dn.data_blkaddr != NEW_ADDR && |
1176 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
1177 | dn.data_blkaddr, | |
1178 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 1179 | err = -EFSCORRUPTED; |
93770ab7 CY |
1180 | goto put_err; |
1181 | } | |
cb3bc9ee | 1182 | got_it: |
43f3eae1 JK |
1183 | if (PageUptodate(page)) { |
1184 | unlock_page(page); | |
eb47b800 | 1185 | return page; |
43f3eae1 | 1186 | } |
eb47b800 | 1187 | |
d59ff4df JK |
1188 | /* |
1189 | * A new dentry page is allocated but not able to be written, since its | |
1190 | * new inode page couldn't be allocated due to -ENOSPC. | |
1191 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
1192 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
1193 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
1194 | */ |
1195 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1196 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1197 | if (!PageUptodate(page)) |
1198 | SetPageUptodate(page); | |
43f3eae1 | 1199 | unlock_page(page); |
d59ff4df JK |
1200 | return page; |
1201 | } | |
eb47b800 | 1202 | |
b7973091 JY |
1203 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr, |
1204 | op_flags, for_write); | |
393ff91f | 1205 | if (err) |
86531d6b | 1206 | goto put_err; |
43f3eae1 | 1207 | return page; |
86531d6b JK |
1208 | |
1209 | put_err: | |
1210 | f2fs_put_page(page, 1); | |
1211 | return ERR_PTR(err); | |
43f3eae1 JK |
1212 | } |
1213 | ||
4d57b86d | 1214 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
1215 | { |
1216 | struct address_space *mapping = inode->i_mapping; | |
1217 | struct page *page; | |
1218 | ||
1219 | page = find_get_page(mapping, index); | |
1220 | if (page && PageUptodate(page)) | |
1221 | return page; | |
1222 | f2fs_put_page(page, 0); | |
1223 | ||
4d57b86d | 1224 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
1225 | if (IS_ERR(page)) |
1226 | return page; | |
1227 | ||
1228 | if (PageUptodate(page)) | |
1229 | return page; | |
1230 | ||
1231 | wait_on_page_locked(page); | |
1232 | if (unlikely(!PageUptodate(page))) { | |
1233 | f2fs_put_page(page, 0); | |
1234 | return ERR_PTR(-EIO); | |
1235 | } | |
1236 | return page; | |
1237 | } | |
1238 | ||
1239 | /* | |
1240 | * If it tries to access a hole, return an error. | |
1241 | * Because, the callers, functions in dir.c and GC, should be able to know | |
1242 | * whether this page exists or not. | |
1243 | */ | |
4d57b86d | 1244 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 1245 | bool for_write) |
43f3eae1 JK |
1246 | { |
1247 | struct address_space *mapping = inode->i_mapping; | |
1248 | struct page *page; | |
1249 | repeat: | |
4d57b86d | 1250 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
1251 | if (IS_ERR(page)) |
1252 | return page; | |
393ff91f | 1253 | |
43f3eae1 | 1254 | /* wait for read completion */ |
393ff91f | 1255 | lock_page(page); |
6bacf52f | 1256 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
1257 | f2fs_put_page(page, 1); |
1258 | goto repeat; | |
eb47b800 | 1259 | } |
1563ac75 CY |
1260 | if (unlikely(!PageUptodate(page))) { |
1261 | f2fs_put_page(page, 1); | |
1262 | return ERR_PTR(-EIO); | |
1263 | } | |
eb47b800 JK |
1264 | return page; |
1265 | } | |
1266 | ||
0a8165d7 | 1267 | /* |
eb47b800 JK |
1268 | * Caller ensures that this data page is never allocated. |
1269 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 1270 | * |
4f4124d0 CY |
1271 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
1272 | * f2fs_unlock_op(). | |
470f00e9 CY |
1273 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
1274 | * ipage should be released by this function. | |
eb47b800 | 1275 | */ |
4d57b86d | 1276 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 1277 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 1278 | { |
eb47b800 JK |
1279 | struct address_space *mapping = inode->i_mapping; |
1280 | struct page *page; | |
1281 | struct dnode_of_data dn; | |
1282 | int err; | |
7612118a | 1283 | |
a56c7c6f | 1284 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
1285 | if (!page) { |
1286 | /* | |
1287 | * before exiting, we should make sure ipage will be released | |
1288 | * if any error occur. | |
1289 | */ | |
1290 | f2fs_put_page(ipage, 1); | |
01f28610 | 1291 | return ERR_PTR(-ENOMEM); |
470f00e9 | 1292 | } |
eb47b800 | 1293 | |
a8865372 | 1294 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 1295 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
1296 | if (err) { |
1297 | f2fs_put_page(page, 1); | |
eb47b800 | 1298 | return ERR_PTR(err); |
a8865372 | 1299 | } |
01f28610 JK |
1300 | if (!ipage) |
1301 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1302 | |
1303 | if (PageUptodate(page)) | |
01f28610 | 1304 | goto got_it; |
eb47b800 JK |
1305 | |
1306 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1307 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1308 | if (!PageUptodate(page)) |
1309 | SetPageUptodate(page); | |
eb47b800 | 1310 | } else { |
4375a336 | 1311 | f2fs_put_page(page, 1); |
a8865372 | 1312 | |
7612118a JK |
1313 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1314 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1315 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1316 | if (IS_ERR(page)) |
7612118a | 1317 | return page; |
eb47b800 | 1318 | } |
01f28610 | 1319 | got_it: |
9edcdabf | 1320 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1321 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1322 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1323 | return page; |
1324 | } | |
1325 | ||
d5097be5 | 1326 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1327 | { |
4081363f | 1328 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1329 | struct f2fs_summary sum; |
bfad7c2d | 1330 | struct node_info ni; |
6aa58d8a | 1331 | block_t old_blkaddr; |
46008c6d | 1332 | blkcnt_t count = 1; |
0abd675e | 1333 | int err; |
bfad7c2d | 1334 | |
91942321 | 1335 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1336 | return -EPERM; |
df6136ef | 1337 | |
7735730d CY |
1338 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
1339 | if (err) | |
1340 | return err; | |
1341 | ||
a2ced1ce | 1342 | dn->data_blkaddr = f2fs_data_blkaddr(dn); |
f847c699 | 1343 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1344 | goto alloc; |
1345 | ||
0abd675e CY |
1346 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1347 | return err; | |
bfad7c2d | 1348 | |
df6136ef | 1349 | alloc: |
bfad7c2d | 1350 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1351 | old_blkaddr = dn->data_blkaddr; |
1352 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
093749e2 | 1353 | &sum, seg_type, NULL); |
6aa58d8a CY |
1354 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
1355 | invalidate_mapping_pages(META_MAPPING(sbi), | |
1356 | old_blkaddr, old_blkaddr); | |
86f35dc3 | 1357 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d | 1358 | |
0a4daae5 JK |
1359 | /* |
1360 | * i_size will be updated by direct_IO. Otherwise, we'll get stale | |
1361 | * data from unwritten block via dio_read. | |
1362 | */ | |
bfad7c2d JK |
1363 | return 0; |
1364 | } | |
1365 | ||
a7de6086 | 1366 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) |
59b802e5 | 1367 | { |
b439b103 | 1368 | struct inode *inode = file_inode(iocb->ki_filp); |
5b8db7fa | 1369 | struct f2fs_map_blocks map; |
d6d478a1 | 1370 | int flag; |
a7de6086 | 1371 | int err = 0; |
d6d478a1 | 1372 | bool direct_io = iocb->ki_flags & IOCB_DIRECT; |
59b802e5 | 1373 | |
0080c507 | 1374 | map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); |
dfd02e4d CY |
1375 | map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); |
1376 | if (map.m_len > map.m_lblk) | |
1377 | map.m_len -= map.m_lblk; | |
1378 | else | |
1379 | map.m_len = 0; | |
1380 | ||
da85985c | 1381 | map.m_next_pgofs = NULL; |
c4020b2d | 1382 | map.m_next_extent = NULL; |
d5097be5 | 1383 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 1384 | map.m_may_create = true; |
2a340760 | 1385 | |
d6d478a1 | 1386 | if (direct_io) { |
4d57b86d | 1387 | map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); |
f847c699 | 1388 | flag = f2fs_force_buffered_io(inode, iocb, from) ? |
d6d478a1 CY |
1389 | F2FS_GET_BLOCK_PRE_AIO : |
1390 | F2FS_GET_BLOCK_PRE_DIO; | |
1391 | goto map_blocks; | |
d5097be5 | 1392 | } |
f2470371 | 1393 | if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { |
a7de6086 JK |
1394 | err = f2fs_convert_inline_inode(inode); |
1395 | if (err) | |
1396 | return err; | |
b439b103 | 1397 | } |
d6d478a1 | 1398 | if (f2fs_has_inline_data(inode)) |
25006645 | 1399 | return err; |
d6d478a1 CY |
1400 | |
1401 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
1402 | ||
1403 | map_blocks: | |
1404 | err = f2fs_map_blocks(inode, &map, 1, flag); | |
1405 | if (map.m_len > 0 && err == -ENOSPC) { | |
1406 | if (!direct_io) | |
1407 | set_inode_flag(inode, FI_NO_PREALLOC); | |
1408 | err = 0; | |
25006645 | 1409 | } |
a7de6086 | 1410 | return err; |
59b802e5 JK |
1411 | } |
1412 | ||
0ef81833 | 1413 | void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1414 | { |
1415 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1416 | if (lock) | |
1417 | down_read(&sbi->node_change); | |
1418 | else | |
1419 | up_read(&sbi->node_change); | |
1420 | } else { | |
1421 | if (lock) | |
1422 | f2fs_lock_op(sbi); | |
1423 | else | |
1424 | f2fs_unlock_op(sbi); | |
1425 | } | |
1426 | } | |
1427 | ||
0a8165d7 | 1428 | /* |
7a88ddb5 CY |
1429 | * f2fs_map_blocks() tries to find or build mapping relationship which |
1430 | * maps continuous logical blocks to physical blocks, and return such | |
1431 | * info via f2fs_map_blocks structure. | |
eb47b800 | 1432 | */ |
d323d005 | 1433 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1434 | int create, int flag) |
eb47b800 | 1435 | { |
003a3e1d | 1436 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1437 | struct dnode_of_data dn; |
f9811703 | 1438 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1439 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1440 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1441 | int err = 0, ofs = 1; |
46008c6d CY |
1442 | unsigned int ofs_in_node, last_ofs_in_node; |
1443 | blkcnt_t prealloc; | |
e15882b6 | 1444 | struct extent_info ei = {0,0,0}; |
7df3a431 | 1445 | block_t blkaddr; |
c4020b2d | 1446 | unsigned int start_pgofs; |
eb47b800 | 1447 | |
dfd02e4d CY |
1448 | if (!maxblocks) |
1449 | return 0; | |
1450 | ||
003a3e1d JK |
1451 | map->m_len = 0; |
1452 | map->m_flags = 0; | |
1453 | ||
1454 | /* it only supports block size == page size */ | |
1455 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1456 | end = pgofs + maxblocks; |
eb47b800 | 1457 | |
24b84912 | 1458 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
b0332a0f | 1459 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f4f0b677 JZ |
1460 | map->m_may_create) |
1461 | goto next_dnode; | |
1462 | ||
003a3e1d JK |
1463 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1464 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1465 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1466 | if (map->m_next_extent) |
1467 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1468 | |
1469 | /* for hardware encryption, but to avoid potential issue in future */ | |
1470 | if (flag == F2FS_GET_BLOCK_DIO) | |
1471 | f2fs_wait_on_block_writeback_range(inode, | |
1472 | map->m_pblk, map->m_len); | |
bfad7c2d | 1473 | goto out; |
a2e7d1bf | 1474 | } |
bfad7c2d | 1475 | |
4fe71e88 | 1476 | next_dnode: |
f9d6d059 | 1477 | if (map->m_may_create) |
0ef81833 | 1478 | f2fs_do_map_lock(sbi, flag, true); |
eb47b800 JK |
1479 | |
1480 | /* When reading holes, we need its node page */ | |
1481 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1482 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1483 | if (err) { |
43473f96 CY |
1484 | if (flag == F2FS_GET_BLOCK_BMAP) |
1485 | map->m_pblk = 0; | |
da85985c | 1486 | if (err == -ENOENT) { |
bfad7c2d | 1487 | err = 0; |
da85985c CY |
1488 | if (map->m_next_pgofs) |
1489 | *map->m_next_pgofs = | |
4d57b86d | 1490 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1491 | if (map->m_next_extent) |
1492 | *map->m_next_extent = | |
4d57b86d | 1493 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1494 | } |
bfad7c2d | 1495 | goto unlock_out; |
848753aa | 1496 | } |
973163fc | 1497 | |
c4020b2d | 1498 | start_pgofs = pgofs; |
46008c6d | 1499 | prealloc = 0; |
230436b3 | 1500 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1501 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1502 | |
1503 | next_block: | |
a2ced1ce | 1504 | blkaddr = f2fs_data_blkaddr(&dn); |
4fe71e88 | 1505 | |
c9b60788 | 1506 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1507 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1508 | err = -EFSCORRUPTED; |
c9b60788 CY |
1509 | goto sync_out; |
1510 | } | |
1511 | ||
93770ab7 | 1512 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1513 | /* use out-place-update for driect IO under LFS mode */ |
b0332a0f | 1514 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f9d6d059 | 1515 | map->m_may_create) { |
f847c699 | 1516 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1517 | if (err) |
1518 | goto sync_out; | |
1519 | blkaddr = dn.data_blkaddr; | |
1520 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1521 | } |
1522 | } else { | |
973163fc | 1523 | if (create) { |
f9811703 CY |
1524 | if (unlikely(f2fs_cp_error(sbi))) { |
1525 | err = -EIO; | |
4fe71e88 | 1526 | goto sync_out; |
f9811703 | 1527 | } |
24b84912 | 1528 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1529 | if (blkaddr == NULL_ADDR) { |
1530 | prealloc++; | |
1531 | last_ofs_in_node = dn.ofs_in_node; | |
1532 | } | |
24b84912 | 1533 | } else { |
0a4daae5 JK |
1534 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1535 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1536 | err = __allocate_data_block(&dn, |
1537 | map->m_seg_type); | |
6f2d8ed6 | 1538 | if (!err) |
91942321 | 1539 | set_inode_flag(inode, FI_APPEND_WRITE); |
24b84912 | 1540 | } |
973163fc | 1541 | if (err) |
4fe71e88 | 1542 | goto sync_out; |
3f2be043 | 1543 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1544 | blkaddr = dn.data_blkaddr; |
973163fc | 1545 | } else { |
43473f96 CY |
1546 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1547 | map->m_pblk = 0; | |
1548 | goto sync_out; | |
1549 | } | |
c4020b2d CY |
1550 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1551 | goto sync_out; | |
da85985c CY |
1552 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1553 | blkaddr == NULL_ADDR) { | |
1554 | if (map->m_next_pgofs) | |
1555 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1556 | goto sync_out; |
da85985c | 1557 | } |
f3d98e74 CY |
1558 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1559 | /* for defragment case */ | |
1560 | if (map->m_next_pgofs) | |
1561 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1562 | goto sync_out; |
f3d98e74 | 1563 | } |
e2b4e2bc | 1564 | } |
e2b4e2bc | 1565 | } |
eb47b800 | 1566 | |
46008c6d CY |
1567 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1568 | goto skip; | |
1569 | ||
4fe71e88 CY |
1570 | if (map->m_len == 0) { |
1571 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1572 | if (blkaddr == NEW_ADDR) | |
1573 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1574 | map->m_flags |= F2FS_MAP_MAPPED; | |
1575 | ||
1576 | map->m_pblk = blkaddr; | |
1577 | map->m_len = 1; | |
1578 | } else if ((map->m_pblk != NEW_ADDR && | |
1579 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1580 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1581 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
4fe71e88 CY |
1582 | ofs++; |
1583 | map->m_len++; | |
1584 | } else { | |
1585 | goto sync_out; | |
1586 | } | |
bfad7c2d | 1587 | |
46008c6d | 1588 | skip: |
bfad7c2d JK |
1589 | dn.ofs_in_node++; |
1590 | pgofs++; | |
1591 | ||
46008c6d CY |
1592 | /* preallocate blocks in batch for one dnode page */ |
1593 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1594 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1595 | |
46008c6d | 1596 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1597 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1598 | if (err) |
1599 | goto sync_out; | |
bfad7c2d | 1600 | |
46008c6d CY |
1601 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1602 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1603 | err = -ENOSPC; | |
1604 | goto sync_out; | |
3104af35 | 1605 | } |
46008c6d CY |
1606 | dn.ofs_in_node = end_offset; |
1607 | } | |
1608 | ||
1609 | if (pgofs >= end) | |
1610 | goto sync_out; | |
1611 | else if (dn.ofs_in_node < end_offset) | |
1612 | goto next_block; | |
1613 | ||
c4020b2d CY |
1614 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1615 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1616 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1617 | ||
1618 | f2fs_update_extent_cache_range(&dn, | |
1619 | start_pgofs, map->m_pblk + ofs, | |
1620 | map->m_len - ofs); | |
1621 | } | |
1622 | } | |
1623 | ||
46008c6d CY |
1624 | f2fs_put_dnode(&dn); |
1625 | ||
f9d6d059 | 1626 | if (map->m_may_create) { |
0ef81833 | 1627 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1628 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1629 | } |
46008c6d | 1630 | goto next_dnode; |
7df3a431 | 1631 | |
bfad7c2d | 1632 | sync_out: |
1e78e8bd ST |
1633 | |
1634 | /* for hardware encryption, but to avoid potential issue in future */ | |
1635 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) | |
1636 | f2fs_wait_on_block_writeback_range(inode, | |
1637 | map->m_pblk, map->m_len); | |
1638 | ||
c4020b2d CY |
1639 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1640 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1641 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1642 | ||
1643 | f2fs_update_extent_cache_range(&dn, | |
1644 | start_pgofs, map->m_pblk + ofs, | |
1645 | map->m_len - ofs); | |
1646 | } | |
1647 | if (map->m_next_extent) | |
1648 | *map->m_next_extent = pgofs + 1; | |
1649 | } | |
eb47b800 | 1650 | f2fs_put_dnode(&dn); |
bfad7c2d | 1651 | unlock_out: |
f9d6d059 | 1652 | if (map->m_may_create) { |
0ef81833 | 1653 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1654 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1655 | } |
bfad7c2d | 1656 | out: |
003a3e1d | 1657 | trace_f2fs_map_blocks(inode, map, err); |
bfad7c2d | 1658 | return err; |
eb47b800 JK |
1659 | } |
1660 | ||
b91050a8 HL |
1661 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1662 | { | |
1663 | struct f2fs_map_blocks map; | |
1664 | block_t last_lblk; | |
1665 | int err; | |
1666 | ||
1667 | if (pos + len > i_size_read(inode)) | |
1668 | return false; | |
1669 | ||
1670 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1671 | map.m_next_pgofs = NULL; | |
1672 | map.m_next_extent = NULL; | |
1673 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1674 | map.m_may_create = false; |
b91050a8 HL |
1675 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1676 | ||
1677 | while (map.m_lblk < last_lblk) { | |
1678 | map.m_len = last_lblk - map.m_lblk; | |
1679 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1680 | if (err || map.m_len == 0) | |
1681 | return false; | |
1682 | map.m_lblk += map.m_len; | |
1683 | } | |
1684 | return true; | |
1685 | } | |
1686 | ||
43b9d4b4 JK |
1687 | static inline u64 bytes_to_blks(struct inode *inode, u64 bytes) |
1688 | { | |
1689 | return (bytes >> inode->i_blkbits); | |
1690 | } | |
1691 | ||
1692 | static inline u64 blks_to_bytes(struct inode *inode, u64 blks) | |
1693 | { | |
1694 | return (blks << inode->i_blkbits); | |
1695 | } | |
1696 | ||
003a3e1d | 1697 | static int __get_data_block(struct inode *inode, sector_t iblock, |
da85985c | 1698 | struct buffer_head *bh, int create, int flag, |
f9d6d059 | 1699 | pgoff_t *next_pgofs, int seg_type, bool may_write) |
003a3e1d JK |
1700 | { |
1701 | struct f2fs_map_blocks map; | |
a7de6086 | 1702 | int err; |
003a3e1d JK |
1703 | |
1704 | map.m_lblk = iblock; | |
43b9d4b4 | 1705 | map.m_len = bytes_to_blks(inode, bh->b_size); |
da85985c | 1706 | map.m_next_pgofs = next_pgofs; |
c4020b2d | 1707 | map.m_next_extent = NULL; |
d5097be5 | 1708 | map.m_seg_type = seg_type; |
f9d6d059 | 1709 | map.m_may_create = may_write; |
003a3e1d | 1710 | |
a7de6086 JK |
1711 | err = f2fs_map_blocks(inode, &map, create, flag); |
1712 | if (!err) { | |
003a3e1d JK |
1713 | map_bh(bh, inode->i_sb, map.m_pblk); |
1714 | bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; | |
43b9d4b4 | 1715 | bh->b_size = blks_to_bytes(inode, map.m_len); |
003a3e1d | 1716 | } |
a7de6086 | 1717 | return err; |
003a3e1d JK |
1718 | } |
1719 | ||
f9d6d059 CY |
1720 | static int get_data_block_dio_write(struct inode *inode, sector_t iblock, |
1721 | struct buffer_head *bh_result, int create) | |
1722 | { | |
1723 | return __get_data_block(inode, iblock, bh_result, create, | |
1724 | F2FS_GET_BLOCK_DIO, NULL, | |
1725 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
75a037f3 | 1726 | IS_SWAPFILE(inode) ? false : true); |
e2b4e2bc CY |
1727 | } |
1728 | ||
1729 | static int get_data_block_dio(struct inode *inode, sector_t iblock, | |
ccfb3000 JK |
1730 | struct buffer_head *bh_result, int create) |
1731 | { | |
e2b4e2bc | 1732 | return __get_data_block(inode, iblock, bh_result, create, |
f9d6d059 CY |
1733 | F2FS_GET_BLOCK_DIO, NULL, |
1734 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1735 | false); | |
ccfb3000 JK |
1736 | } |
1737 | ||
442a9dbd CY |
1738 | static int f2fs_xattr_fiemap(struct inode *inode, |
1739 | struct fiemap_extent_info *fieinfo) | |
1740 | { | |
1741 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1742 | struct page *page; | |
1743 | struct node_info ni; | |
1744 | __u64 phys = 0, len; | |
1745 | __u32 flags; | |
1746 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1747 | int err = 0; | |
1748 | ||
1749 | if (f2fs_has_inline_xattr(inode)) { | |
1750 | int offset; | |
1751 | ||
1752 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1753 | inode->i_ino, false); | |
1754 | if (!page) | |
1755 | return -ENOMEM; | |
1756 | ||
7735730d CY |
1757 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1758 | if (err) { | |
1759 | f2fs_put_page(page, 1); | |
1760 | return err; | |
1761 | } | |
442a9dbd | 1762 | |
6cbfcab5 | 1763 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1764 | offset = offsetof(struct f2fs_inode, i_addr) + |
1765 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1766 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1767 | |
1768 | phys += offset; | |
1769 | len = inline_xattr_size(inode); | |
1770 | ||
1771 | f2fs_put_page(page, 1); | |
1772 | ||
1773 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1774 | ||
1775 | if (!xnid) | |
1776 | flags |= FIEMAP_EXTENT_LAST; | |
1777 | ||
1778 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
dd5a09bd | 1779 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
442a9dbd CY |
1780 | if (err || err == 1) |
1781 | return err; | |
1782 | } | |
1783 | ||
1784 | if (xnid) { | |
1785 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1786 | if (!page) | |
1787 | return -ENOMEM; | |
1788 | ||
7735730d CY |
1789 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1790 | if (err) { | |
1791 | f2fs_put_page(page, 1); | |
1792 | return err; | |
1793 | } | |
442a9dbd | 1794 | |
6cbfcab5 | 1795 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1796 | len = inode->i_sb->s_blocksize; |
1797 | ||
1798 | f2fs_put_page(page, 1); | |
1799 | ||
1800 | flags = FIEMAP_EXTENT_LAST; | |
1801 | } | |
1802 | ||
dd5a09bd | 1803 | if (phys) { |
442a9dbd | 1804 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); |
dd5a09bd CY |
1805 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
1806 | } | |
442a9dbd CY |
1807 | |
1808 | return (err < 0 ? err : 0); | |
1809 | } | |
1810 | ||
bf38fbad CY |
1811 | static loff_t max_inode_blocks(struct inode *inode) |
1812 | { | |
1813 | loff_t result = ADDRS_PER_INODE(inode); | |
1814 | loff_t leaf_count = ADDRS_PER_BLOCK(inode); | |
1815 | ||
1816 | /* two direct node blocks */ | |
1817 | result += (leaf_count * 2); | |
1818 | ||
1819 | /* two indirect node blocks */ | |
1820 | leaf_count *= NIDS_PER_BLOCK; | |
1821 | result += (leaf_count * 2); | |
1822 | ||
1823 | /* one double indirect node block */ | |
1824 | leaf_count *= NIDS_PER_BLOCK; | |
1825 | result += leaf_count; | |
1826 | ||
1827 | return result; | |
1828 | } | |
1829 | ||
9ab70134 JK |
1830 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1831 | u64 start, u64 len) | |
1832 | { | |
b876f4c9 | 1833 | struct f2fs_map_blocks map; |
7f63eb77 | 1834 | sector_t start_blk, last_blk; |
da85985c | 1835 | pgoff_t next_pgofs; |
7f63eb77 JK |
1836 | u64 logical = 0, phys = 0, size = 0; |
1837 | u32 flags = 0; | |
7f63eb77 | 1838 | int ret = 0; |
bf38fbad CY |
1839 | bool compr_cluster = false; |
1840 | unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; | |
7f63eb77 | 1841 | |
c4020b2d CY |
1842 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1843 | ret = f2fs_precache_extents(inode); | |
1844 | if (ret) | |
1845 | return ret; | |
1846 | } | |
1847 | ||
45dd052e | 1848 | ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1849 | if (ret) |
1850 | return ret; | |
1851 | ||
f1b43d4c CY |
1852 | inode_lock(inode); |
1853 | ||
442a9dbd CY |
1854 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1855 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1856 | goto out; | |
1857 | } | |
1858 | ||
7975f349 | 1859 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1860 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1861 | if (ret != -EAGAIN) | |
f1b43d4c | 1862 | goto out; |
67f8cf3c JK |
1863 | } |
1864 | ||
6cbfcab5 JK |
1865 | if (bytes_to_blks(inode, len) == 0) |
1866 | len = blks_to_bytes(inode, 1); | |
7f63eb77 | 1867 | |
6cbfcab5 JK |
1868 | start_blk = bytes_to_blks(inode, start); |
1869 | last_blk = bytes_to_blks(inode, start + len - 1); | |
9a950d52 | 1870 | |
7f63eb77 | 1871 | next: |
b876f4c9 JK |
1872 | memset(&map, 0, sizeof(map)); |
1873 | map.m_lblk = start_blk; | |
1874 | map.m_len = bytes_to_blks(inode, len); | |
1875 | map.m_next_pgofs = &next_pgofs; | |
1876 | map.m_seg_type = NO_CHECK_TYPE; | |
7f63eb77 | 1877 | |
bf38fbad | 1878 | if (compr_cluster) |
b876f4c9 | 1879 | map.m_len = cluster_size - 1; |
bf38fbad | 1880 | |
b876f4c9 | 1881 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
7f63eb77 JK |
1882 | if (ret) |
1883 | goto out; | |
1884 | ||
1885 | /* HOLE */ | |
b876f4c9 | 1886 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
da85985c | 1887 | start_blk = next_pgofs; |
58736fa6 | 1888 | |
6cbfcab5 | 1889 | if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode, |
bf38fbad | 1890 | max_inode_blocks(inode))) |
9a950d52 | 1891 | goto prep_next; |
58736fa6 | 1892 | |
9a950d52 FL |
1893 | flags |= FIEMAP_EXTENT_LAST; |
1894 | } | |
7f63eb77 | 1895 | |
da5af127 | 1896 | if (size) { |
0953fe86 | 1897 | flags |= FIEMAP_EXTENT_MERGED; |
62230e0d | 1898 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1899 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1900 | ||
9a950d52 FL |
1901 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1902 | phys, size, flags); | |
dd5a09bd | 1903 | trace_f2fs_fiemap(inode, logical, phys, size, flags, ret); |
bf38fbad CY |
1904 | if (ret) |
1905 | goto out; | |
1906 | size = 0; | |
da5af127 | 1907 | } |
7f63eb77 | 1908 | |
bf38fbad | 1909 | if (start_blk > last_blk) |
9a950d52 | 1910 | goto out; |
7f63eb77 | 1911 | |
bf38fbad CY |
1912 | if (compr_cluster) { |
1913 | compr_cluster = false; | |
1914 | ||
1915 | ||
6cbfcab5 | 1916 | logical = blks_to_bytes(inode, start_blk - 1); |
b876f4c9 | 1917 | phys = blks_to_bytes(inode, map.m_pblk); |
6cbfcab5 | 1918 | size = blks_to_bytes(inode, cluster_size); |
bf38fbad CY |
1919 | |
1920 | flags |= FIEMAP_EXTENT_ENCODED; | |
1921 | ||
1922 | start_blk += cluster_size - 1; | |
1923 | ||
1924 | if (start_blk > last_blk) | |
1925 | goto out; | |
1926 | ||
1927 | goto prep_next; | |
1928 | } | |
1929 | ||
b876f4c9 | 1930 | if (map.m_pblk == COMPRESS_ADDR) { |
bf38fbad CY |
1931 | compr_cluster = true; |
1932 | start_blk++; | |
1933 | goto prep_next; | |
1934 | } | |
1935 | ||
6cbfcab5 | 1936 | logical = blks_to_bytes(inode, start_blk); |
b876f4c9 JK |
1937 | phys = blks_to_bytes(inode, map.m_pblk); |
1938 | size = blks_to_bytes(inode, map.m_len); | |
9a950d52 | 1939 | flags = 0; |
b876f4c9 | 1940 | if (map.m_flags & F2FS_MAP_UNWRITTEN) |
9a950d52 | 1941 | flags = FIEMAP_EXTENT_UNWRITTEN; |
7f63eb77 | 1942 | |
6cbfcab5 | 1943 | start_blk += bytes_to_blks(inode, size); |
7f63eb77 | 1944 | |
9a950d52 | 1945 | prep_next: |
7f63eb77 JK |
1946 | cond_resched(); |
1947 | if (fatal_signal_pending(current)) | |
1948 | ret = -EINTR; | |
1949 | else | |
1950 | goto next; | |
1951 | out: | |
1952 | if (ret == 1) | |
1953 | ret = 0; | |
1954 | ||
5955102c | 1955 | inode_unlock(inode); |
7f63eb77 | 1956 | return ret; |
9ab70134 JK |
1957 | } |
1958 | ||
95ae251f EB |
1959 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
1960 | { | |
1961 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
1962 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
1963 | return inode->i_sb->s_maxbytes; | |
1964 | ||
1965 | return i_size_read(inode); | |
1966 | } | |
1967 | ||
2df0ab04 CY |
1968 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
1969 | unsigned nr_pages, | |
1970 | struct f2fs_map_blocks *map, | |
1971 | struct bio **bio_ret, | |
1972 | sector_t *last_block_in_bio, | |
1973 | bool is_readahead) | |
1974 | { | |
1975 | struct bio *bio = *bio_ret; | |
43b9d4b4 | 1976 | const unsigned blocksize = blks_to_bytes(inode, 1); |
2df0ab04 CY |
1977 | sector_t block_in_file; |
1978 | sector_t last_block; | |
1979 | sector_t last_block_in_file; | |
1980 | sector_t block_nr; | |
1981 | int ret = 0; | |
1982 | ||
4969c06a | 1983 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 1984 | last_block = block_in_file + nr_pages; |
43b9d4b4 JK |
1985 | last_block_in_file = bytes_to_blks(inode, |
1986 | f2fs_readpage_limit(inode) + blocksize - 1); | |
2df0ab04 CY |
1987 | if (last_block > last_block_in_file) |
1988 | last_block = last_block_in_file; | |
1989 | ||
1990 | /* just zeroing out page which is beyond EOF */ | |
1991 | if (block_in_file >= last_block) | |
1992 | goto zero_out; | |
1993 | /* | |
1994 | * Map blocks using the previous result first. | |
1995 | */ | |
1996 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
1997 | block_in_file > map->m_lblk && | |
1998 | block_in_file < (map->m_lblk + map->m_len)) | |
1999 | goto got_it; | |
2000 | ||
2001 | /* | |
2002 | * Then do more f2fs_map_blocks() calls until we are | |
2003 | * done with this page. | |
2004 | */ | |
2005 | map->m_lblk = block_in_file; | |
2006 | map->m_len = last_block - block_in_file; | |
2007 | ||
2008 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
2009 | if (ret) | |
2010 | goto out; | |
2011 | got_it: | |
2012 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
2013 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
2014 | SetPageMappedToDisk(page); | |
2015 | ||
4969c06a JK |
2016 | if (!PageUptodate(page) && (!PageSwapCache(page) && |
2017 | !cleancache_get_page(page))) { | |
2df0ab04 CY |
2018 | SetPageUptodate(page); |
2019 | goto confused; | |
2020 | } | |
2021 | ||
2022 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
93770ab7 | 2023 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 2024 | ret = -EFSCORRUPTED; |
2df0ab04 CY |
2025 | goto out; |
2026 | } | |
2027 | } else { | |
2028 | zero_out: | |
2029 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
2030 | if (f2fs_need_verity(inode, page->index) && |
2031 | !fsverity_verify_page(page)) { | |
2032 | ret = -EIO; | |
2033 | goto out; | |
2034 | } | |
2df0ab04 CY |
2035 | if (!PageUptodate(page)) |
2036 | SetPageUptodate(page); | |
2037 | unlock_page(page); | |
2038 | goto out; | |
2039 | } | |
2040 | ||
2041 | /* | |
2042 | * This page will go to BIO. Do we need to send this | |
2043 | * BIO off first? | |
2044 | */ | |
27aacd28 ST |
2045 | if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio, |
2046 | *last_block_in_bio, block_nr) || | |
2047 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
2df0ab04 CY |
2048 | submit_and_realloc: |
2049 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2050 | bio = NULL; | |
2051 | } | |
2052 | if (bio == NULL) { | |
2053 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
0683728a | 2054 | is_readahead ? REQ_RAHEAD : 0, page->index, |
7f59b277 | 2055 | false); |
2df0ab04 CY |
2056 | if (IS_ERR(bio)) { |
2057 | ret = PTR_ERR(bio); | |
2058 | bio = NULL; | |
2059 | goto out; | |
2060 | } | |
2061 | } | |
2062 | ||
2063 | /* | |
2064 | * If the page is under writeback, we need to wait for | |
2065 | * its completion to see the correct decrypted data. | |
2066 | */ | |
2067 | f2fs_wait_on_block_writeback(inode, block_nr); | |
2068 | ||
2069 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2070 | goto submit_and_realloc; | |
2071 | ||
2072 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
8b83ac81 | 2073 | f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE); |
2df0ab04 CY |
2074 | ClearPageError(page); |
2075 | *last_block_in_bio = block_nr; | |
2076 | goto out; | |
2077 | confused: | |
2078 | if (bio) { | |
2079 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2080 | bio = NULL; | |
2081 | } | |
2082 | unlock_page(page); | |
2083 | out: | |
2084 | *bio_ret = bio; | |
2085 | return ret; | |
2086 | } | |
2087 | ||
4c8ff709 CY |
2088 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2089 | int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, | |
2090 | unsigned nr_pages, sector_t *last_block_in_bio, | |
0683728a | 2091 | bool is_readahead, bool for_write) |
4c8ff709 CY |
2092 | { |
2093 | struct dnode_of_data dn; | |
2094 | struct inode *inode = cc->inode; | |
2095 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2096 | struct bio *bio = *bio_ret; | |
2097 | unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; | |
2098 | sector_t last_block_in_file; | |
43b9d4b4 | 2099 | const unsigned blocksize = blks_to_bytes(inode, 1); |
4c8ff709 CY |
2100 | struct decompress_io_ctx *dic = NULL; |
2101 | int i; | |
2102 | int ret = 0; | |
2103 | ||
2104 | f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); | |
2105 | ||
43b9d4b4 JK |
2106 | last_block_in_file = bytes_to_blks(inode, |
2107 | f2fs_readpage_limit(inode) + blocksize - 1); | |
4c8ff709 CY |
2108 | |
2109 | /* get rid of pages beyond EOF */ | |
2110 | for (i = 0; i < cc->cluster_size; i++) { | |
2111 | struct page *page = cc->rpages[i]; | |
2112 | ||
2113 | if (!page) | |
2114 | continue; | |
2115 | if ((sector_t)page->index >= last_block_in_file) { | |
2116 | zero_user_segment(page, 0, PAGE_SIZE); | |
2117 | if (!PageUptodate(page)) | |
2118 | SetPageUptodate(page); | |
2119 | } else if (!PageUptodate(page)) { | |
2120 | continue; | |
2121 | } | |
2122 | unlock_page(page); | |
2123 | cc->rpages[i] = NULL; | |
2124 | cc->nr_rpages--; | |
2125 | } | |
2126 | ||
2127 | /* we are done since all pages are beyond EOF */ | |
2128 | if (f2fs_cluster_is_empty(cc)) | |
2129 | goto out; | |
2130 | ||
2131 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
2132 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
2133 | if (ret) | |
2134 | goto out; | |
2135 | ||
a86d27dd | 2136 | f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); |
4c8ff709 CY |
2137 | |
2138 | for (i = 1; i < cc->cluster_size; i++) { | |
2139 | block_t blkaddr; | |
2140 | ||
a2ced1ce | 2141 | blkaddr = data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
2142 | dn.ofs_in_node + i); |
2143 | ||
2144 | if (!__is_valid_data_blkaddr(blkaddr)) | |
2145 | break; | |
2146 | ||
2147 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
2148 | ret = -EFAULT; | |
2149 | goto out_put_dnode; | |
2150 | } | |
2151 | cc->nr_cpages++; | |
2152 | } | |
2153 | ||
2154 | /* nothing to decompress */ | |
2155 | if (cc->nr_cpages == 0) { | |
2156 | ret = 0; | |
2157 | goto out_put_dnode; | |
2158 | } | |
2159 | ||
2160 | dic = f2fs_alloc_dic(cc); | |
2161 | if (IS_ERR(dic)) { | |
2162 | ret = PTR_ERR(dic); | |
2163 | goto out_put_dnode; | |
2164 | } | |
2165 | ||
2166 | for (i = 0; i < dic->nr_cpages; i++) { | |
2167 | struct page *page = dic->cpages[i]; | |
2168 | block_t blkaddr; | |
7f59b277 | 2169 | struct bio_post_read_ctx *ctx; |
4c8ff709 | 2170 | |
a2ced1ce | 2171 | blkaddr = data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
2172 | dn.ofs_in_node + i + 1); |
2173 | ||
27aacd28 ST |
2174 | if (bio && (!page_is_mergeable(sbi, bio, |
2175 | *last_block_in_bio, blkaddr) || | |
2176 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
4c8ff709 CY |
2177 | submit_and_realloc: |
2178 | __submit_bio(sbi, bio, DATA); | |
2179 | bio = NULL; | |
2180 | } | |
2181 | ||
2182 | if (!bio) { | |
2183 | bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, | |
2184 | is_readahead ? REQ_RAHEAD : 0, | |
7f59b277 | 2185 | page->index, for_write); |
4c8ff709 CY |
2186 | if (IS_ERR(bio)) { |
2187 | ret = PTR_ERR(bio); | |
7f59b277 | 2188 | f2fs_decompress_end_io(dic, ret); |
4c8ff709 | 2189 | f2fs_put_dnode(&dn); |
f3494345 | 2190 | *bio_ret = NULL; |
4c8ff709 CY |
2191 | return ret; |
2192 | } | |
2193 | } | |
2194 | ||
2195 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
2196 | ||
2197 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2198 | goto submit_and_realloc; | |
2199 | ||
03382f1a | 2200 | ctx = bio->bi_private; |
7f59b277 EB |
2201 | ctx->enabled_steps |= STEP_DECOMPRESS; |
2202 | refcount_inc(&dic->refcnt); | |
03382f1a | 2203 | |
4c8ff709 | 2204 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 2205 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
9c122384 | 2206 | f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE); |
4c8ff709 CY |
2207 | ClearPageError(page); |
2208 | *last_block_in_bio = blkaddr; | |
2209 | } | |
2210 | ||
2211 | f2fs_put_dnode(&dn); | |
2212 | ||
2213 | *bio_ret = bio; | |
2214 | return 0; | |
2215 | ||
2216 | out_put_dnode: | |
2217 | f2fs_put_dnode(&dn); | |
2218 | out: | |
7f59b277 EB |
2219 | for (i = 0; i < cc->cluster_size; i++) { |
2220 | if (cc->rpages[i]) { | |
2221 | ClearPageUptodate(cc->rpages[i]); | |
2222 | ClearPageError(cc->rpages[i]); | |
2223 | unlock_page(cc->rpages[i]); | |
2224 | } | |
2225 | } | |
4c8ff709 CY |
2226 | *bio_ret = bio; |
2227 | return ret; | |
2228 | } | |
2229 | #endif | |
2230 | ||
f1e88660 JK |
2231 | /* |
2232 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
2233 | * Major change was from block_size == page_size in f2fs by default. | |
2234 | */ | |
e20a7693 | 2235 | static int f2fs_mpage_readpages(struct inode *inode, |
23323196 | 2236 | struct readahead_control *rac, struct page *page) |
f1e88660 JK |
2237 | { |
2238 | struct bio *bio = NULL; | |
f1e88660 | 2239 | sector_t last_block_in_bio = 0; |
f1e88660 | 2240 | struct f2fs_map_blocks map; |
4c8ff709 CY |
2241 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2242 | struct compress_ctx cc = { | |
2243 | .inode = inode, | |
2244 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2245 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2246 | .cluster_idx = NULL_CLUSTER, | |
2247 | .rpages = NULL, | |
2248 | .cpages = NULL, | |
2249 | .nr_rpages = 0, | |
2250 | .nr_cpages = 0, | |
2251 | }; | |
2252 | #endif | |
23323196 | 2253 | unsigned nr_pages = rac ? readahead_count(rac) : 1; |
4c8ff709 | 2254 | unsigned max_nr_pages = nr_pages; |
2df0ab04 | 2255 | int ret = 0; |
f1e88660 JK |
2256 | |
2257 | map.m_pblk = 0; | |
2258 | map.m_lblk = 0; | |
2259 | map.m_len = 0; | |
2260 | map.m_flags = 0; | |
da85985c | 2261 | map.m_next_pgofs = NULL; |
c4020b2d | 2262 | map.m_next_extent = NULL; |
d5097be5 | 2263 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 2264 | map.m_may_create = false; |
f1e88660 | 2265 | |
736c0a74 | 2266 | for (; nr_pages; nr_pages--) { |
23323196 MWO |
2267 | if (rac) { |
2268 | page = readahead_page(rac); | |
a83d50bc | 2269 | prefetchw(&page->flags); |
f1e88660 JK |
2270 | } |
2271 | ||
4c8ff709 CY |
2272 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2273 | if (f2fs_compressed_file(inode)) { | |
2274 | /* there are remained comressed pages, submit them */ | |
2275 | if (!f2fs_cluster_can_merge_page(&cc, page->index)) { | |
2276 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2277 | max_nr_pages, | |
2278 | &last_block_in_bio, | |
23323196 | 2279 | rac != NULL, false); |
4c8ff709 CY |
2280 | f2fs_destroy_compress_ctx(&cc); |
2281 | if (ret) | |
2282 | goto set_error_page; | |
2283 | } | |
2284 | ret = f2fs_is_compressed_cluster(inode, page->index); | |
2285 | if (ret < 0) | |
2286 | goto set_error_page; | |
2287 | else if (!ret) | |
2288 | goto read_single_page; | |
2289 | ||
2290 | ret = f2fs_init_compress_ctx(&cc); | |
2291 | if (ret) | |
2292 | goto set_error_page; | |
2293 | ||
2294 | f2fs_compress_ctx_add_page(&cc, page); | |
2295 | ||
2296 | goto next_page; | |
2297 | } | |
2298 | read_single_page: | |
2299 | #endif | |
2300 | ||
2301 | ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, | |
23323196 | 2302 | &bio, &last_block_in_bio, rac); |
2df0ab04 | 2303 | if (ret) { |
4c8ff709 CY |
2304 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2305 | set_error_page: | |
2306 | #endif | |
2df0ab04 | 2307 | SetPageError(page); |
09cbfeaf | 2308 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 2309 | unlock_page(page); |
f1e88660 | 2310 | } |
23323196 | 2311 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
f1e88660 | 2312 | next_page: |
23323196 MWO |
2313 | #endif |
2314 | if (rac) | |
09cbfeaf | 2315 | put_page(page); |
4c8ff709 CY |
2316 | |
2317 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2318 | if (f2fs_compressed_file(inode)) { | |
2319 | /* last page */ | |
2320 | if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) { | |
2321 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2322 | max_nr_pages, | |
2323 | &last_block_in_bio, | |
23323196 | 2324 | rac != NULL, false); |
4c8ff709 CY |
2325 | f2fs_destroy_compress_ctx(&cc); |
2326 | } | |
2327 | } | |
2328 | #endif | |
f1e88660 | 2329 | } |
f1e88660 | 2330 | if (bio) |
4fc29c1a | 2331 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
23323196 | 2332 | return ret; |
f1e88660 JK |
2333 | } |
2334 | ||
eb47b800 JK |
2335 | static int f2fs_read_data_page(struct file *file, struct page *page) |
2336 | { | |
4969c06a | 2337 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 2338 | int ret = -EAGAIN; |
9ffe0fb5 | 2339 | |
c20e89cd CY |
2340 | trace_f2fs_readpage(page, DATA); |
2341 | ||
4c8ff709 CY |
2342 | if (!f2fs_is_compress_backend_ready(inode)) { |
2343 | unlock_page(page); | |
2344 | return -EOPNOTSUPP; | |
2345 | } | |
2346 | ||
e1c42045 | 2347 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
2348 | if (f2fs_has_inline_data(inode)) |
2349 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 2350 | if (ret == -EAGAIN) |
e20a7693 | 2351 | ret = f2fs_mpage_readpages(inode, NULL, page); |
9ffe0fb5 | 2352 | return ret; |
eb47b800 JK |
2353 | } |
2354 | ||
23323196 | 2355 | static void f2fs_readahead(struct readahead_control *rac) |
eb47b800 | 2356 | { |
23323196 | 2357 | struct inode *inode = rac->mapping->host; |
b8c29400 | 2358 | |
23323196 | 2359 | trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac)); |
9ffe0fb5 | 2360 | |
4c8ff709 | 2361 | if (!f2fs_is_compress_backend_ready(inode)) |
23323196 | 2362 | return; |
4c8ff709 | 2363 | |
9ffe0fb5 HL |
2364 | /* If the file has inline data, skip readpages */ |
2365 | if (f2fs_has_inline_data(inode)) | |
23323196 | 2366 | return; |
9ffe0fb5 | 2367 | |
e20a7693 | 2368 | f2fs_mpage_readpages(inode, rac, NULL); |
eb47b800 JK |
2369 | } |
2370 | ||
4c8ff709 | 2371 | int f2fs_encrypt_one_page(struct f2fs_io_info *fio) |
7eab0c0d HP |
2372 | { |
2373 | struct inode *inode = fio->page->mapping->host; | |
4c8ff709 | 2374 | struct page *mpage, *page; |
7eab0c0d HP |
2375 | gfp_t gfp_flags = GFP_NOFS; |
2376 | ||
1958593e | 2377 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
2378 | return 0; |
2379 | ||
4c8ff709 CY |
2380 | page = fio->compressed_page ? fio->compressed_page : fio->page; |
2381 | ||
6dbb1796 | 2382 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 2383 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d | 2384 | |
27aacd28 ST |
2385 | if (fscrypt_inode_uses_inline_crypto(inode)) |
2386 | return 0; | |
2387 | ||
7eab0c0d | 2388 | retry_encrypt: |
4c8ff709 CY |
2389 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, |
2390 | PAGE_SIZE, 0, gfp_flags); | |
6aa58d8a CY |
2391 | if (IS_ERR(fio->encrypted_page)) { |
2392 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
2393 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
2394 | f2fs_flush_merged_writes(fio->sbi); | |
5df7731f | 2395 | congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); |
6aa58d8a CY |
2396 | gfp_flags |= __GFP_NOFAIL; |
2397 | goto retry_encrypt; | |
2398 | } | |
2399 | return PTR_ERR(fio->encrypted_page); | |
2400 | } | |
7eab0c0d | 2401 | |
6aa58d8a CY |
2402 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
2403 | if (mpage) { | |
2404 | if (PageUptodate(mpage)) | |
2405 | memcpy(page_address(mpage), | |
2406 | page_address(fio->encrypted_page), PAGE_SIZE); | |
2407 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 2408 | } |
6aa58d8a | 2409 | return 0; |
7eab0c0d HP |
2410 | } |
2411 | ||
bb9e3bb8 CY |
2412 | static inline bool check_inplace_update_policy(struct inode *inode, |
2413 | struct f2fs_io_info *fio) | |
7eab0c0d | 2414 | { |
bb9e3bb8 CY |
2415 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2416 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 2417 | |
bb9e3bb8 CY |
2418 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
2419 | return true; | |
4d57b86d | 2420 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
2421 | return true; |
2422 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
2423 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
2424 | return true; | |
4d57b86d | 2425 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
2426 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
2427 | return true; | |
2428 | ||
2429 | /* | |
2430 | * IPU for rewrite async pages | |
2431 | */ | |
2432 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
2433 | fio && fio->op == REQ_OP_WRITE && | |
2434 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 2435 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
2436 | return true; |
2437 | ||
2438 | /* this is only set during fdatasync */ | |
2439 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
2440 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
2441 | return true; | |
2442 | ||
4354994f DR |
2443 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2444 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2445 | return true; | |
2446 | ||
bb9e3bb8 CY |
2447 | return false; |
2448 | } | |
2449 | ||
4d57b86d | 2450 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 2451 | { |
1ad71a27 JK |
2452 | if (f2fs_is_pinned_file(inode)) |
2453 | return true; | |
bb9e3bb8 CY |
2454 | |
2455 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
2456 | if (file_is_cold(inode)) | |
2457 | return true; | |
2458 | ||
2459 | return check_inplace_update_policy(inode, fio); | |
2460 | } | |
2461 | ||
4d57b86d | 2462 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
2463 | { |
2464 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2465 | ||
b0332a0f | 2466 | if (f2fs_lfs_mode(sbi)) |
bb9e3bb8 CY |
2467 | return true; |
2468 | if (S_ISDIR(inode->i_mode)) | |
2469 | return true; | |
af033b2a CY |
2470 | if (IS_NOQUOTA(inode)) |
2471 | return true; | |
bb9e3bb8 CY |
2472 | if (f2fs_is_atomic_file(inode)) |
2473 | return true; | |
2474 | if (fio) { | |
2475 | if (is_cold_data(fio->page)) | |
2476 | return true; | |
2477 | if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) | |
2478 | return true; | |
4354994f DR |
2479 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2480 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2481 | return true; | |
bb9e3bb8 CY |
2482 | } |
2483 | return false; | |
2484 | } | |
2485 | ||
7eab0c0d HP |
2486 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
2487 | { | |
2488 | struct inode *inode = fio->page->mapping->host; | |
2489 | ||
4d57b86d | 2490 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
2491 | return false; |
2492 | ||
4d57b86d | 2493 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
2494 | } |
2495 | ||
4d57b86d | 2496 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 2497 | { |
05ca3632 | 2498 | struct page *page = fio->page; |
eb47b800 | 2499 | struct inode *inode = page->mapping->host; |
eb47b800 | 2500 | struct dnode_of_data dn; |
e959c8f5 | 2501 | struct extent_info ei = {0,0,0}; |
7735730d | 2502 | struct node_info ni; |
e959c8f5 | 2503 | bool ipu_force = false; |
eb47b800 JK |
2504 | int err = 0; |
2505 | ||
2506 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
2507 | if (need_inplace_update(fio) && |
2508 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
2509 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 2510 | |
c9b60788 | 2511 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
93770ab7 | 2512 | DATA_GENERIC_ENHANCE)) |
10f966bb | 2513 | return -EFSCORRUPTED; |
c9b60788 CY |
2514 | |
2515 | ipu_force = true; | |
2516 | fio->need_lock = LOCK_DONE; | |
2517 | goto got_it; | |
e959c8f5 | 2518 | } |
279d6df2 | 2519 | |
d29460e5 JK |
2520 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2521 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2522 | return -EAGAIN; | |
279d6df2 | 2523 | |
4d57b86d | 2524 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2525 | if (err) |
279d6df2 | 2526 | goto out; |
eb47b800 | 2527 | |
28bc106b | 2528 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2529 | |
2530 | /* This page is already truncated */ | |
7a9d7548 | 2531 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2532 | ClearPageUptodate(page); |
2baf0781 | 2533 | clear_cold_data(page); |
eb47b800 | 2534 | goto out_writepage; |
2bca1e23 | 2535 | } |
e959c8f5 | 2536 | got_it: |
c9b60788 CY |
2537 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2538 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2539 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2540 | err = -EFSCORRUPTED; |
c9b60788 CY |
2541 | goto out_writepage; |
2542 | } | |
eb47b800 JK |
2543 | /* |
2544 | * If current allocation needs SSR, | |
2545 | * it had better in-place writes for updated data. | |
2546 | */ | |
93770ab7 CY |
2547 | if (ipu_force || |
2548 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2549 | need_inplace_update(fio))) { |
4c8ff709 | 2550 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2551 | if (err) |
2552 | goto out_writepage; | |
2553 | ||
2554 | set_page_writeback(page); | |
17c50035 | 2555 | ClearPageError(page); |
279d6df2 | 2556 | f2fs_put_dnode(&dn); |
cc15620b | 2557 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2558 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2559 | err = f2fs_inplace_write_data(fio); |
6492a335 | 2560 | if (err) { |
27aacd28 | 2561 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
d2d0727b | 2562 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2563 | if (PageWriteback(page)) |
2564 | end_page_writeback(page); | |
cd23ffa9 CY |
2565 | } else { |
2566 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2567 | } |
7eab0c0d | 2568 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2569 | return err; |
eb47b800 | 2570 | } |
279d6df2 | 2571 | |
cc15620b JK |
2572 | if (fio->need_lock == LOCK_RETRY) { |
2573 | if (!f2fs_trylock_op(fio->sbi)) { | |
2574 | err = -EAGAIN; | |
2575 | goto out_writepage; | |
2576 | } | |
2577 | fio->need_lock = LOCK_REQ; | |
2578 | } | |
2579 | ||
7735730d CY |
2580 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
2581 | if (err) | |
2582 | goto out_writepage; | |
2583 | ||
2584 | fio->version = ni.version; | |
2585 | ||
4c8ff709 | 2586 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2587 | if (err) |
2588 | goto out_writepage; | |
2589 | ||
2590 | set_page_writeback(page); | |
17c50035 | 2591 | ClearPageError(page); |
cc15620b | 2592 | |
4c8ff709 CY |
2593 | if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) |
2594 | f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); | |
2595 | ||
279d6df2 | 2596 | /* LFS mode write path */ |
4d57b86d | 2597 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2598 | trace_f2fs_do_write_data_page(page, OPU); |
2599 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2600 | if (page->index == 0) | |
2601 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2602 | out_writepage: |
2603 | f2fs_put_dnode(&dn); | |
279d6df2 | 2604 | out: |
cc15620b | 2605 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2606 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2607 | return err; |
2608 | } | |
2609 | ||
4c8ff709 | 2610 | int f2fs_write_single_data_page(struct page *page, int *submitted, |
8648de2c CY |
2611 | struct bio **bio, |
2612 | sector_t *last_block, | |
b0af6d49 | 2613 | struct writeback_control *wbc, |
4c8ff709 | 2614 | enum iostat_type io_type, |
3afae09f CY |
2615 | int compr_blocks, |
2616 | bool allow_balance) | |
eb47b800 JK |
2617 | { |
2618 | struct inode *inode = page->mapping->host; | |
4081363f | 2619 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 | 2620 | loff_t i_size = i_size_read(inode); |
4c8ff709 | 2621 | const pgoff_t end_index = ((unsigned long long)i_size) |
09cbfeaf | 2622 | >> PAGE_SHIFT; |
1f0d5c91 | 2623 | loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2624 | unsigned offset = 0; |
39936837 | 2625 | bool need_balance_fs = false; |
eb47b800 | 2626 | int err = 0; |
458e6197 | 2627 | struct f2fs_io_info fio = { |
05ca3632 | 2628 | .sbi = sbi, |
39d787be | 2629 | .ino = inode->i_ino, |
458e6197 | 2630 | .type = DATA, |
04d328de | 2631 | .op = REQ_OP_WRITE, |
7637241e | 2632 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2633 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2634 | .page = page, |
4375a336 | 2635 | .encrypted_page = NULL, |
d68f735b | 2636 | .submitted = false, |
4c8ff709 | 2637 | .compr_blocks = compr_blocks, |
cc15620b | 2638 | .need_lock = LOCK_RETRY, |
b0af6d49 | 2639 | .io_type = io_type, |
578c6478 | 2640 | .io_wbc = wbc, |
8648de2c CY |
2641 | .bio = bio, |
2642 | .last_block = last_block, | |
458e6197 | 2643 | }; |
eb47b800 | 2644 | |
ecda0de3 CY |
2645 | trace_f2fs_writepage(page, DATA); |
2646 | ||
db198ae0 CY |
2647 | /* we should bypass data pages to proceed the kworkder jobs */ |
2648 | if (unlikely(f2fs_cp_error(sbi))) { | |
2649 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2650 | /* |
2651 | * don't drop any dirty dentry pages for keeping lastest | |
2652 | * directory structure. | |
2653 | */ | |
2654 | if (S_ISDIR(inode->i_mode)) | |
2655 | goto redirty_out; | |
db198ae0 CY |
2656 | goto out; |
2657 | } | |
2658 | ||
0771fcc7 CY |
2659 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2660 | goto redirty_out; | |
2661 | ||
4c8ff709 CY |
2662 | if (page->index < end_index || |
2663 | f2fs_verity_in_progress(inode) || | |
2664 | compr_blocks) | |
39936837 | 2665 | goto write; |
eb47b800 JK |
2666 | |
2667 | /* | |
2668 | * If the offset is out-of-range of file size, | |
2669 | * this page does not have to be written to disk. | |
2670 | */ | |
09cbfeaf | 2671 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2672 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2673 | goto out; |
eb47b800 | 2674 | |
09cbfeaf | 2675 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2676 | write: |
1e84371f JK |
2677 | if (f2fs_is_drop_cache(inode)) |
2678 | goto out; | |
e6e5f561 JK |
2679 | /* we should not write 0'th page having journal header */ |
2680 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
2681 | (!wbc->for_reclaim && | |
4d57b86d | 2682 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 2683 | goto redirty_out; |
eb47b800 | 2684 | |
435cbab9 JK |
2685 | /* Dentry/quota blocks are controlled by checkpoint */ |
2686 | if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) { | |
79963d96 CY |
2687 | /* |
2688 | * We need to wait for node_write to avoid block allocation during | |
2689 | * checkpoint. This can only happen to quota writes which can cause | |
2690 | * the below discard race condition. | |
2691 | */ | |
2692 | if (IS_NOQUOTA(inode)) | |
2693 | down_read(&sbi->node_write); | |
2694 | ||
cc15620b | 2695 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2696 | err = f2fs_do_write_data_page(&fio); |
79963d96 CY |
2697 | |
2698 | if (IS_NOQUOTA(inode)) | |
2699 | up_read(&sbi->node_write); | |
2700 | ||
8618b881 JK |
2701 | goto done; |
2702 | } | |
9ffe0fb5 | 2703 | |
8618b881 | 2704 | if (!wbc->for_reclaim) |
39936837 | 2705 | need_balance_fs = true; |
7f3037a5 | 2706 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2707 | goto redirty_out; |
ef095d19 JK |
2708 | else |
2709 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2710 | |
b3d208f9 | 2711 | err = -EAGAIN; |
dd7b2333 | 2712 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2713 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2714 | if (!err) |
2715 | goto out; | |
2716 | } | |
279d6df2 | 2717 | |
cc15620b | 2718 | if (err == -EAGAIN) { |
4d57b86d | 2719 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2720 | if (err == -EAGAIN) { |
2721 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2722 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2723 | } |
2724 | } | |
a0d00fad | 2725 | |
eb449797 CY |
2726 | if (err) { |
2727 | file_set_keep_isize(inode); | |
2728 | } else { | |
c10c9820 | 2729 | spin_lock(&F2FS_I(inode)->i_size_lock); |
eb449797 CY |
2730 | if (F2FS_I(inode)->last_disk_size < psize) |
2731 | F2FS_I(inode)->last_disk_size = psize; | |
c10c9820 | 2732 | spin_unlock(&F2FS_I(inode)->i_size_lock); |
eb449797 | 2733 | } |
279d6df2 | 2734 | |
8618b881 JK |
2735 | done: |
2736 | if (err && err != -ENOENT) | |
2737 | goto redirty_out; | |
eb47b800 | 2738 | |
39936837 | 2739 | out: |
a7ffdbe2 | 2740 | inode_dec_dirty_pages(inode); |
2baf0781 | 2741 | if (err) { |
2bca1e23 | 2742 | ClearPageUptodate(page); |
2baf0781 CY |
2743 | clear_cold_data(page); |
2744 | } | |
0c3a5797 CY |
2745 | |
2746 | if (wbc->for_reclaim) { | |
bab475c5 | 2747 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2748 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2749 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2750 | submitted = NULL; |
0c3a5797 | 2751 | } |
eb47b800 | 2752 | unlock_page(page); |
186857c5 | 2753 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
3afae09f | 2754 | !F2FS_I(inode)->cp_task && allow_balance) |
a7881893 | 2755 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2756 | |
d68f735b | 2757 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2758 | f2fs_submit_merged_write(sbi, DATA); |
0b20fcec | 2759 | f2fs_submit_merged_ipu_write(sbi, bio, NULL); |
d68f735b JK |
2760 | submitted = NULL; |
2761 | } | |
2762 | ||
2763 | if (submitted) | |
4c8ff709 | 2764 | *submitted = fio.submitted ? 1 : 0; |
0c3a5797 | 2765 | |
eb47b800 JK |
2766 | return 0; |
2767 | ||
eb47b800 | 2768 | redirty_out: |
76f60268 | 2769 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2770 | /* |
2771 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2772 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2773 | * file_write_and_wait_range() will see EIO error, which is critical | |
2774 | * to return value of fsync() followed by atomic_write failure to user. | |
2775 | */ | |
2776 | if (!err || wbc->for_reclaim) | |
0002b61b | 2777 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2778 | unlock_page(page); |
2779 | return err; | |
fa9150a8 NJ |
2780 | } |
2781 | ||
f566bae8 JK |
2782 | static int f2fs_write_data_page(struct page *page, |
2783 | struct writeback_control *wbc) | |
2784 | { | |
4c8ff709 CY |
2785 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2786 | struct inode *inode = page->mapping->host; | |
2787 | ||
2788 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) | |
2789 | goto out; | |
2790 | ||
2791 | if (f2fs_compressed_file(inode)) { | |
2792 | if (f2fs_is_compressed_cluster(inode, page->index)) { | |
2793 | redirty_page_for_writepage(wbc, page); | |
2794 | return AOP_WRITEPAGE_ACTIVATE; | |
2795 | } | |
2796 | } | |
2797 | out: | |
2798 | #endif | |
2799 | ||
2800 | return f2fs_write_single_data_page(page, NULL, NULL, NULL, | |
3afae09f | 2801 | wbc, FS_DATA_IO, 0, true); |
f566bae8 JK |
2802 | } |
2803 | ||
8f46dcae CY |
2804 | /* |
2805 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2806 | * The major change is making write step of cold data page separately from | |
2807 | * warm/hot data page. | |
2808 | */ | |
2809 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2810 | struct writeback_control *wbc, |
2811 | enum iostat_type io_type) | |
8f46dcae CY |
2812 | { |
2813 | int ret = 0; | |
4c8ff709 | 2814 | int done = 0, retry = 0; |
8f46dcae | 2815 | struct pagevec pvec; |
c29fd0c0 | 2816 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2817 | struct bio *bio = NULL; |
2818 | sector_t last_block; | |
4c8ff709 CY |
2819 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2820 | struct inode *inode = mapping->host; | |
2821 | struct compress_ctx cc = { | |
2822 | .inode = inode, | |
2823 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2824 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2825 | .cluster_idx = NULL_CLUSTER, | |
2826 | .rpages = NULL, | |
2827 | .nr_rpages = 0, | |
2828 | .cpages = NULL, | |
2829 | .rbuf = NULL, | |
2830 | .cbuf = NULL, | |
2831 | .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, | |
2832 | .private = NULL, | |
2833 | }; | |
2834 | #endif | |
8f46dcae | 2835 | int nr_pages; |
8f46dcae CY |
2836 | pgoff_t index; |
2837 | pgoff_t end; /* Inclusive */ | |
2838 | pgoff_t done_index; | |
8f46dcae | 2839 | int range_whole = 0; |
10bbd235 | 2840 | xa_mark_t tag; |
bab475c5 | 2841 | int nwritten = 0; |
4c8ff709 CY |
2842 | int submitted = 0; |
2843 | int i; | |
8f46dcae | 2844 | |
86679820 | 2845 | pagevec_init(&pvec); |
46ae957f | 2846 | |
ef095d19 JK |
2847 | if (get_dirty_pages(mapping->host) <= |
2848 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2849 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2850 | else | |
2851 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2852 | ||
8f46dcae | 2853 | if (wbc->range_cyclic) { |
4df7a75f | 2854 | index = mapping->writeback_index; /* prev offset */ |
8f46dcae CY |
2855 | end = -1; |
2856 | } else { | |
09cbfeaf KS |
2857 | index = wbc->range_start >> PAGE_SHIFT; |
2858 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2859 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2860 | range_whole = 1; | |
8f46dcae CY |
2861 | } |
2862 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2863 | tag = PAGECACHE_TAG_TOWRITE; | |
2864 | else | |
2865 | tag = PAGECACHE_TAG_DIRTY; | |
2866 | retry: | |
4c8ff709 | 2867 | retry = 0; |
8f46dcae CY |
2868 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) |
2869 | tag_pages_for_writeback(mapping, index, end); | |
2870 | done_index = index; | |
4c8ff709 | 2871 | while (!done && !retry && (index <= end)) { |
69c4f35d | 2872 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2873 | tag); |
8f46dcae CY |
2874 | if (nr_pages == 0) |
2875 | break; | |
2876 | ||
2877 | for (i = 0; i < nr_pages; i++) { | |
2878 | struct page *page = pvec.pages[i]; | |
4c8ff709 CY |
2879 | bool need_readd; |
2880 | readd: | |
2881 | need_readd = false; | |
2882 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2883 | if (f2fs_compressed_file(inode)) { | |
2884 | ret = f2fs_init_compress_ctx(&cc); | |
2885 | if (ret) { | |
2886 | done = 1; | |
2887 | break; | |
2888 | } | |
2889 | ||
2890 | if (!f2fs_cluster_can_merge_page(&cc, | |
2891 | page->index)) { | |
2892 | ret = f2fs_write_multi_pages(&cc, | |
2893 | &submitted, wbc, io_type); | |
2894 | if (!ret) | |
2895 | need_readd = true; | |
2896 | goto result; | |
2897 | } | |
8f46dcae | 2898 | |
4c8ff709 CY |
2899 | if (unlikely(f2fs_cp_error(sbi))) |
2900 | goto lock_page; | |
2901 | ||
2902 | if (f2fs_cluster_is_empty(&cc)) { | |
2903 | void *fsdata = NULL; | |
2904 | struct page *pagep; | |
2905 | int ret2; | |
2906 | ||
2907 | ret2 = f2fs_prepare_compress_overwrite( | |
2908 | inode, &pagep, | |
2909 | page->index, &fsdata); | |
2910 | if (ret2 < 0) { | |
2911 | ret = ret2; | |
2912 | done = 1; | |
2913 | break; | |
2914 | } else if (ret2 && | |
2915 | !f2fs_compress_write_end(inode, | |
2916 | fsdata, page->index, | |
2917 | 1)) { | |
2918 | retry = 1; | |
2919 | break; | |
2920 | } | |
2921 | } else { | |
2922 | goto lock_page; | |
2923 | } | |
2924 | } | |
2925 | #endif | |
f8de4331 | 2926 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2927 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2928 | wbc->sync_mode == WB_SYNC_NONE) { |
2929 | done = 1; | |
2930 | break; | |
2931 | } | |
4c8ff709 CY |
2932 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2933 | lock_page: | |
2934 | #endif | |
8f46dcae | 2935 | done_index = page->index; |
d29460e5 | 2936 | retry_write: |
8f46dcae CY |
2937 | lock_page(page); |
2938 | ||
2939 | if (unlikely(page->mapping != mapping)) { | |
2940 | continue_unlock: | |
2941 | unlock_page(page); | |
2942 | continue; | |
2943 | } | |
2944 | ||
2945 | if (!PageDirty(page)) { | |
2946 | /* someone wrote it for us */ | |
2947 | goto continue_unlock; | |
2948 | } | |
2949 | ||
8f46dcae | 2950 | if (PageWriteback(page)) { |
0b20fcec | 2951 | if (wbc->sync_mode != WB_SYNC_NONE) |
fec1d657 | 2952 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 2953 | DATA, true, true); |
0b20fcec | 2954 | else |
8f46dcae CY |
2955 | goto continue_unlock; |
2956 | } | |
2957 | ||
8f46dcae CY |
2958 | if (!clear_page_dirty_for_io(page)) |
2959 | goto continue_unlock; | |
2960 | ||
4c8ff709 CY |
2961 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2962 | if (f2fs_compressed_file(inode)) { | |
2963 | get_page(page); | |
2964 | f2fs_compress_ctx_add_page(&cc, page); | |
2965 | continue; | |
2966 | } | |
2967 | #endif | |
2968 | ret = f2fs_write_single_data_page(page, &submitted, | |
3afae09f CY |
2969 | &bio, &last_block, wbc, io_type, |
2970 | 0, true); | |
4c8ff709 CY |
2971 | if (ret == AOP_WRITEPAGE_ACTIVATE) |
2972 | unlock_page(page); | |
2973 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2974 | result: | |
2975 | #endif | |
2976 | nwritten += submitted; | |
2977 | wbc->nr_to_write -= submitted; | |
2978 | ||
8f46dcae | 2979 | if (unlikely(ret)) { |
0002b61b CY |
2980 | /* |
2981 | * keep nr_to_write, since vfs uses this to | |
2982 | * get # of written pages. | |
2983 | */ | |
2984 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
0002b61b | 2985 | ret = 0; |
4c8ff709 | 2986 | goto next; |
d29460e5 JK |
2987 | } else if (ret == -EAGAIN) { |
2988 | ret = 0; | |
2989 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
2990 | cond_resched(); | |
2991 | congestion_wait(BLK_RW_ASYNC, | |
5df7731f | 2992 | DEFAULT_IO_TIMEOUT); |
d29460e5 JK |
2993 | goto retry_write; |
2994 | } | |
4c8ff709 | 2995 | goto next; |
0002b61b | 2996 | } |
b230e6ca JK |
2997 | done_index = page->index + 1; |
2998 | done = 1; | |
2999 | break; | |
8f46dcae CY |
3000 | } |
3001 | ||
4c8ff709 | 3002 | if (wbc->nr_to_write <= 0 && |
687de7f1 | 3003 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
3004 | done = 1; |
3005 | break; | |
3006 | } | |
4c8ff709 CY |
3007 | next: |
3008 | if (need_readd) | |
3009 | goto readd; | |
8f46dcae CY |
3010 | } |
3011 | pagevec_release(&pvec); | |
3012 | cond_resched(); | |
3013 | } | |
4c8ff709 CY |
3014 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3015 | /* flush remained pages in compress cluster */ | |
3016 | if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) { | |
3017 | ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); | |
3018 | nwritten += submitted; | |
3019 | wbc->nr_to_write -= submitted; | |
3020 | if (ret) { | |
3021 | done = 1; | |
3022 | retry = 0; | |
3023 | } | |
3024 | } | |
adfc6943 JK |
3025 | if (f2fs_compressed_file(inode)) |
3026 | f2fs_destroy_compress_ctx(&cc); | |
4c8ff709 | 3027 | #endif |
e78790f8 | 3028 | if (retry) { |
8f46dcae | 3029 | index = 0; |
e78790f8 | 3030 | end = -1; |
8f46dcae CY |
3031 | goto retry; |
3032 | } | |
e78790f8 ST |
3033 | if (wbc->range_cyclic && !done) |
3034 | done_index = 0; | |
8f46dcae CY |
3035 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) |
3036 | mapping->writeback_index = done_index; | |
3037 | ||
bab475c5 | 3038 | if (nwritten) |
b9109b0e | 3039 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 3040 | NULL, 0, DATA); |
8648de2c CY |
3041 | /* submit cached bio of IPU write */ |
3042 | if (bio) | |
0b20fcec | 3043 | f2fs_submit_merged_ipu_write(sbi, &bio, NULL); |
6ca56ca4 | 3044 | |
8f46dcae CY |
3045 | return ret; |
3046 | } | |
3047 | ||
853137ce JK |
3048 | static inline bool __should_serialize_io(struct inode *inode, |
3049 | struct writeback_control *wbc) | |
3050 | { | |
b13f67ff CY |
3051 | /* to avoid deadlock in path of data flush */ |
3052 | if (F2FS_I(inode)->cp_task) | |
3053 | return false; | |
3054 | ||
853137ce JK |
3055 | if (!S_ISREG(inode->i_mode)) |
3056 | return false; | |
af033b2a CY |
3057 | if (IS_NOQUOTA(inode)) |
3058 | return false; | |
b13f67ff | 3059 | |
602a16d5 | 3060 | if (f2fs_need_compress_data(inode)) |
b13f67ff | 3061 | return true; |
853137ce JK |
3062 | if (wbc->sync_mode != WB_SYNC_ALL) |
3063 | return true; | |
3064 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
3065 | return true; | |
3066 | return false; | |
3067 | } | |
3068 | ||
fc99fe27 | 3069 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
3070 | struct writeback_control *wbc, |
3071 | enum iostat_type io_type) | |
eb47b800 JK |
3072 | { |
3073 | struct inode *inode = mapping->host; | |
4081363f | 3074 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 3075 | struct blk_plug plug; |
eb47b800 | 3076 | int ret; |
853137ce | 3077 | bool locked = false; |
eb47b800 | 3078 | |
cfb185a1 | 3079 | /* deal with chardevs and other special file */ |
3080 | if (!mapping->a_ops->writepage) | |
3081 | return 0; | |
3082 | ||
6a290544 CY |
3083 | /* skip writing if there is no dirty page in this inode */ |
3084 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
3085 | return 0; | |
3086 | ||
0771fcc7 CY |
3087 | /* during POR, we don't need to trigger writepage at all. */ |
3088 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
3089 | goto skip_write; | |
3090 | ||
af033b2a CY |
3091 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
3092 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 3093 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 3094 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
3095 | goto skip_write; |
3096 | ||
d323d005 | 3097 | /* skip writing during file defragment */ |
91942321 | 3098 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
3099 | goto skip_write; |
3100 | ||
d31c7c3f YH |
3101 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
3102 | ||
687de7f1 JK |
3103 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
3104 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
3105 | atomic_inc(&sbi->wb_sync_req[DATA]); |
3106 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
3107 | goto skip_write; |
3108 | ||
853137ce JK |
3109 | if (__should_serialize_io(inode, wbc)) { |
3110 | mutex_lock(&sbi->writepages); | |
3111 | locked = true; | |
3112 | } | |
3113 | ||
9dfa1baf | 3114 | blk_start_plug(&plug); |
b0af6d49 | 3115 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 3116 | blk_finish_plug(&plug); |
687de7f1 | 3117 | |
853137ce JK |
3118 | if (locked) |
3119 | mutex_unlock(&sbi->writepages); | |
3120 | ||
687de7f1 | 3121 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 3122 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
3123 | /* |
3124 | * if some pages were truncated, we cannot guarantee its mapping->host | |
3125 | * to detect pending bios. | |
3126 | */ | |
458e6197 | 3127 | |
4d57b86d | 3128 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 3129 | return ret; |
d3baf95d JK |
3130 | |
3131 | skip_write: | |
a7ffdbe2 | 3132 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 3133 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 3134 | return 0; |
eb47b800 JK |
3135 | } |
3136 | ||
b0af6d49 CY |
3137 | static int f2fs_write_data_pages(struct address_space *mapping, |
3138 | struct writeback_control *wbc) | |
3139 | { | |
3140 | struct inode *inode = mapping->host; | |
3141 | ||
3142 | return __f2fs_write_data_pages(mapping, wbc, | |
3143 | F2FS_I(inode)->cp_task == current ? | |
3144 | FS_CP_DATA_IO : FS_DATA_IO); | |
3145 | } | |
3146 | ||
3aab8f82 CY |
3147 | static void f2fs_write_failed(struct address_space *mapping, loff_t to) |
3148 | { | |
3149 | struct inode *inode = mapping->host; | |
819d9153 | 3150 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 3151 | |
3f188c23 JK |
3152 | if (IS_NOQUOTA(inode)) |
3153 | return; | |
3154 | ||
95ae251f EB |
3155 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
3156 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
a33c1502 | 3157 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 3158 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 3159 | |
819d9153 | 3160 | truncate_pagecache(inode, i_size); |
3f188c23 | 3161 | f2fs_truncate_blocks(inode, i_size, true); |
a33c1502 | 3162 | |
5a3a2d83 | 3163 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 3164 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
3165 | } |
3166 | } | |
3167 | ||
2aadac08 JK |
3168 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
3169 | struct page *page, loff_t pos, unsigned len, | |
3170 | block_t *blk_addr, bool *node_changed) | |
3171 | { | |
3172 | struct inode *inode = page->mapping->host; | |
3173 | pgoff_t index = page->index; | |
3174 | struct dnode_of_data dn; | |
3175 | struct page *ipage; | |
b4d07a3e | 3176 | bool locked = false; |
e15882b6 | 3177 | struct extent_info ei = {0,0,0}; |
2aadac08 | 3178 | int err = 0; |
2866fb16 | 3179 | int flag; |
2aadac08 | 3180 | |
24b84912 JK |
3181 | /* |
3182 | * we already allocated all the blocks, so we don't need to get | |
3183 | * the block addresses when there is no need to fill the page. | |
3184 | */ | |
dc91de78 | 3185 | if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && |
95ae251f EB |
3186 | !is_inode_flag_set(inode, FI_NO_PREALLOC) && |
3187 | !f2fs_verity_in_progress(inode)) | |
24b84912 JK |
3188 | return 0; |
3189 | ||
2866fb16 SY |
3190 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
3191 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
3192 | flag = F2FS_GET_BLOCK_DEFAULT; | |
3193 | else | |
3194 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
3195 | ||
b4d07a3e | 3196 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 3197 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
0ef81833 | 3198 | f2fs_do_map_lock(sbi, flag, true); |
b4d07a3e JK |
3199 | locked = true; |
3200 | } | |
4c8ff709 | 3201 | |
b4d07a3e | 3202 | restart: |
2aadac08 | 3203 | /* check inline_data */ |
4d57b86d | 3204 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
3205 | if (IS_ERR(ipage)) { |
3206 | err = PTR_ERR(ipage); | |
3207 | goto unlock_out; | |
3208 | } | |
3209 | ||
3210 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3211 | ||
3212 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 3213 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 3214 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 3215 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d CY |
3216 | if (inode->i_nlink) |
3217 | set_inline_node(ipage); | |
2aadac08 JK |
3218 | } else { |
3219 | err = f2fs_convert_inline_page(&dn, page); | |
3220 | if (err) | |
b4d07a3e JK |
3221 | goto out; |
3222 | if (dn.data_blkaddr == NULL_ADDR) | |
3223 | err = f2fs_get_block(&dn, index); | |
3224 | } | |
3225 | } else if (locked) { | |
3226 | err = f2fs_get_block(&dn, index); | |
3227 | } else { | |
3228 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
3229 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
3230 | } else { | |
b4d07a3e | 3231 | /* hole case */ |
4d57b86d | 3232 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 3233 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 3234 | f2fs_put_dnode(&dn); |
0ef81833 | 3235 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
59c9081b | 3236 | true); |
2866fb16 | 3237 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
3238 | locked = true; |
3239 | goto restart; | |
3240 | } | |
2aadac08 JK |
3241 | } |
3242 | } | |
b4d07a3e | 3243 | |
2aadac08 JK |
3244 | /* convert_inline_page can make node_changed */ |
3245 | *blk_addr = dn.data_blkaddr; | |
3246 | *node_changed = dn.node_changed; | |
b4d07a3e | 3247 | out: |
2aadac08 JK |
3248 | f2fs_put_dnode(&dn); |
3249 | unlock_out: | |
b4d07a3e | 3250 | if (locked) |
0ef81833 | 3251 | f2fs_do_map_lock(sbi, flag, false); |
2aadac08 JK |
3252 | return err; |
3253 | } | |
3254 | ||
eb47b800 JK |
3255 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
3256 | loff_t pos, unsigned len, unsigned flags, | |
3257 | struct page **pagep, void **fsdata) | |
3258 | { | |
3259 | struct inode *inode = mapping->host; | |
4081363f | 3260 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 3261 | struct page *page = NULL; |
09cbfeaf | 3262 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 3263 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 3264 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
3265 | int err = 0; |
3266 | ||
62aed044 CY |
3267 | trace_f2fs_write_begin(inode, pos, len, flags); |
3268 | ||
00e09c0b CY |
3269 | if (!f2fs_is_checkpoint_ready(sbi)) { |
3270 | err = -ENOSPC; | |
4354994f | 3271 | goto fail; |
00e09c0b | 3272 | } |
4354994f | 3273 | |
455e3a58 JK |
3274 | if ((f2fs_is_atomic_file(inode) && |
3275 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
3276 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 3277 | err = -ENOMEM; |
a2e2e76b | 3278 | drop_atomic = true; |
57864ae5 JK |
3279 | goto fail; |
3280 | } | |
3281 | ||
5f727395 JK |
3282 | /* |
3283 | * We should check this at this moment to avoid deadlock on inode page | |
3284 | * and #0 page. The locking rule for inline_data conversion should be: | |
3285 | * lock_page(page #0) -> lock_page(inode_page) | |
3286 | */ | |
3287 | if (index != 0) { | |
3288 | err = f2fs_convert_inline_inode(inode); | |
3289 | if (err) | |
3290 | goto fail; | |
3291 | } | |
4c8ff709 CY |
3292 | |
3293 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3294 | if (f2fs_compressed_file(inode)) { | |
3295 | int ret; | |
3296 | ||
3297 | *fsdata = NULL; | |
3298 | ||
3299 | ret = f2fs_prepare_compress_overwrite(inode, pagep, | |
3300 | index, fsdata); | |
3301 | if (ret < 0) { | |
3302 | err = ret; | |
3303 | goto fail; | |
3304 | } else if (ret) { | |
3305 | return 0; | |
3306 | } | |
3307 | } | |
3308 | #endif | |
3309 | ||
afcb7ca0 | 3310 | repeat: |
86d54795 JK |
3311 | /* |
3312 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
3313 | * wait_for_stable_page. Will wait that below with our IO control. | |
3314 | */ | |
01eccef7 | 3315 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 3316 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
3317 | if (!page) { |
3318 | err = -ENOMEM; | |
3319 | goto fail; | |
3320 | } | |
d5f66990 | 3321 | |
4c8ff709 CY |
3322 | /* TODO: cluster can be compressed due to race with .writepage */ |
3323 | ||
eb47b800 JK |
3324 | *pagep = page; |
3325 | ||
2aadac08 JK |
3326 | err = prepare_write_begin(sbi, page, pos, len, |
3327 | &blkaddr, &need_balance); | |
9ba69cf9 | 3328 | if (err) |
2aadac08 | 3329 | goto fail; |
9ba69cf9 | 3330 | |
af033b2a CY |
3331 | if (need_balance && !IS_NOQUOTA(inode) && |
3332 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 3333 | unlock_page(page); |
2c4db1a6 | 3334 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
3335 | lock_page(page); |
3336 | if (page->mapping != mapping) { | |
3337 | /* The page got truncated from under us */ | |
3338 | f2fs_put_page(page, 1); | |
3339 | goto repeat; | |
3340 | } | |
3341 | } | |
3342 | ||
bae0ee7a | 3343 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 3344 | |
649d7df2 JK |
3345 | if (len == PAGE_SIZE || PageUptodate(page)) |
3346 | return 0; | |
eb47b800 | 3347 | |
95ae251f EB |
3348 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
3349 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
3350 | zero_user_segment(page, len, PAGE_SIZE); |
3351 | return 0; | |
3352 | } | |
3353 | ||
2aadac08 | 3354 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 3355 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 3356 | SetPageUptodate(page); |
eb47b800 | 3357 | } else { |
93770ab7 CY |
3358 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
3359 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 3360 | err = -EFSCORRUPTED; |
93770ab7 CY |
3361 | goto fail; |
3362 | } | |
b7973091 | 3363 | err = f2fs_submit_page_read(inode, page, blkaddr, 0, true); |
13ba41e3 | 3364 | if (err) |
78682f79 | 3365 | goto fail; |
d54c795b | 3366 | |
393ff91f | 3367 | lock_page(page); |
6bacf52f | 3368 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
3369 | f2fs_put_page(page, 1); |
3370 | goto repeat; | |
eb47b800 | 3371 | } |
1563ac75 CY |
3372 | if (unlikely(!PageUptodate(page))) { |
3373 | err = -EIO; | |
3374 | goto fail; | |
4375a336 | 3375 | } |
eb47b800 | 3376 | } |
eb47b800 | 3377 | return 0; |
9ba69cf9 | 3378 | |
3aab8f82 | 3379 | fail: |
86531d6b | 3380 | f2fs_put_page(page, 1); |
3aab8f82 | 3381 | f2fs_write_failed(mapping, pos + len); |
a2e2e76b | 3382 | if (drop_atomic) |
4d57b86d | 3383 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 3384 | return err; |
eb47b800 JK |
3385 | } |
3386 | ||
a1dd3c13 JK |
3387 | static int f2fs_write_end(struct file *file, |
3388 | struct address_space *mapping, | |
3389 | loff_t pos, unsigned len, unsigned copied, | |
3390 | struct page *page, void *fsdata) | |
3391 | { | |
3392 | struct inode *inode = page->mapping->host; | |
3393 | ||
dfb2bf38 CY |
3394 | trace_f2fs_write_end(inode, pos, len, copied); |
3395 | ||
649d7df2 JK |
3396 | /* |
3397 | * This should be come from len == PAGE_SIZE, and we expect copied | |
3398 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
3399 | * let generic_perform_write() try to copy data again through copied=0. | |
3400 | */ | |
3401 | if (!PageUptodate(page)) { | |
746e2403 | 3402 | if (unlikely(copied != len)) |
649d7df2 JK |
3403 | copied = 0; |
3404 | else | |
3405 | SetPageUptodate(page); | |
3406 | } | |
4c8ff709 CY |
3407 | |
3408 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3409 | /* overwrite compressed file */ | |
3410 | if (f2fs_compressed_file(inode) && fsdata) { | |
3411 | f2fs_compress_write_end(inode, fsdata, page->index, copied); | |
3412 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
944dd22e CY |
3413 | |
3414 | if (pos + copied > i_size_read(inode) && | |
3415 | !f2fs_verity_in_progress(inode)) | |
3416 | f2fs_i_size_write(inode, pos + copied); | |
4c8ff709 CY |
3417 | return copied; |
3418 | } | |
3419 | #endif | |
3420 | ||
649d7df2 JK |
3421 | if (!copied) |
3422 | goto unlock_out; | |
3423 | ||
34ba94ba | 3424 | set_page_dirty(page); |
a1dd3c13 | 3425 | |
95ae251f EB |
3426 | if (pos + copied > i_size_read(inode) && |
3427 | !f2fs_verity_in_progress(inode)) | |
fc9581c8 | 3428 | f2fs_i_size_write(inode, pos + copied); |
649d7df2 | 3429 | unlock_out: |
3024c9a1 | 3430 | f2fs_put_page(page, 1); |
d0239e1b | 3431 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
3432 | return copied; |
3433 | } | |
3434 | ||
6f673763 OS |
3435 | static int check_direct_IO(struct inode *inode, struct iov_iter *iter, |
3436 | loff_t offset) | |
944fcfc1 | 3437 | { |
8a56dd96 JK |
3438 | unsigned i_blkbits = READ_ONCE(inode->i_blkbits); |
3439 | unsigned blkbits = i_blkbits; | |
3440 | unsigned blocksize_mask = (1 << blkbits) - 1; | |
3441 | unsigned long align = offset | iov_iter_alignment(iter); | |
3442 | struct block_device *bdev = inode->i_sb->s_bdev; | |
3443 | ||
20d0a107 GKB |
3444 | if (iov_iter_rw(iter) == READ && offset >= i_size_read(inode)) |
3445 | return 1; | |
3446 | ||
8a56dd96 JK |
3447 | if (align & blocksize_mask) { |
3448 | if (bdev) | |
3449 | blkbits = blksize_bits(bdev_logical_block_size(bdev)); | |
3450 | blocksize_mask = (1 << blkbits) - 1; | |
3451 | if (align & blocksize_mask) | |
3452 | return -EINVAL; | |
3453 | return 1; | |
3454 | } | |
944fcfc1 JK |
3455 | return 0; |
3456 | } | |
3457 | ||
02b16d0a CY |
3458 | static void f2fs_dio_end_io(struct bio *bio) |
3459 | { | |
3460 | struct f2fs_private_dio *dio = bio->bi_private; | |
3461 | ||
3462 | dec_page_count(F2FS_I_SB(dio->inode), | |
3463 | dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
3464 | ||
3465 | bio->bi_private = dio->orig_private; | |
3466 | bio->bi_end_io = dio->orig_end_io; | |
3467 | ||
c8eb7024 | 3468 | kfree(dio); |
02b16d0a CY |
3469 | |
3470 | bio_endio(bio); | |
3471 | } | |
3472 | ||
3473 | static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode, | |
3474 | loff_t file_offset) | |
3475 | { | |
3476 | struct f2fs_private_dio *dio; | |
3477 | bool write = (bio_op(bio) == REQ_OP_WRITE); | |
02b16d0a CY |
3478 | |
3479 | dio = f2fs_kzalloc(F2FS_I_SB(inode), | |
3480 | sizeof(struct f2fs_private_dio), GFP_NOFS); | |
8e114038 | 3481 | if (!dio) |
02b16d0a | 3482 | goto out; |
02b16d0a CY |
3483 | |
3484 | dio->inode = inode; | |
3485 | dio->orig_end_io = bio->bi_end_io; | |
3486 | dio->orig_private = bio->bi_private; | |
3487 | dio->write = write; | |
3488 | ||
3489 | bio->bi_end_io = f2fs_dio_end_io; | |
3490 | bio->bi_private = dio; | |
3491 | ||
3492 | inc_page_count(F2FS_I_SB(inode), | |
3493 | write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
3494 | ||
3495 | submit_bio(bio); | |
3496 | return; | |
3497 | out: | |
3498 | bio->bi_status = BLK_STS_IOERR; | |
3499 | bio_endio(bio); | |
3500 | } | |
3501 | ||
c8b8e32d | 3502 | static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
eb47b800 | 3503 | { |
b439b103 | 3504 | struct address_space *mapping = iocb->ki_filp->f_mapping; |
3aab8f82 | 3505 | struct inode *inode = mapping->host; |
0cdd3195 | 3506 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f847c699 | 3507 | struct f2fs_inode_info *fi = F2FS_I(inode); |
3aab8f82 | 3508 | size_t count = iov_iter_count(iter); |
c8b8e32d | 3509 | loff_t offset = iocb->ki_pos; |
82e0a5aa | 3510 | int rw = iov_iter_rw(iter); |
3aab8f82 | 3511 | int err; |
0cdd3195 | 3512 | enum rw_hint hint = iocb->ki_hint; |
63189b78 | 3513 | int whint_mode = F2FS_OPTION(sbi).whint_mode; |
f847c699 | 3514 | bool do_opu; |
944fcfc1 | 3515 | |
b439b103 | 3516 | err = check_direct_IO(inode, iter, offset); |
b9d777b8 | 3517 | if (err) |
8a56dd96 | 3518 | return err < 0 ? err : 0; |
9ffe0fb5 | 3519 | |
f847c699 | 3520 | if (f2fs_force_buffered_io(inode, iocb, iter)) |
36abef4e | 3521 | return 0; |
fcc85a4d | 3522 | |
f847c699 CY |
3523 | do_opu = allow_outplace_dio(inode, iocb, iter); |
3524 | ||
5302fb00 | 3525 | trace_f2fs_direct_IO_enter(inode, offset, count, rw); |
70407fad | 3526 | |
0cdd3195 HL |
3527 | if (rw == WRITE && whint_mode == WHINT_MODE_OFF) |
3528 | iocb->ki_hint = WRITE_LIFE_NOT_SET; | |
3529 | ||
f847c699 CY |
3530 | if (iocb->ki_flags & IOCB_NOWAIT) { |
3531 | if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { | |
3532 | iocb->ki_hint = hint; | |
3533 | err = -EAGAIN; | |
3534 | goto out; | |
3535 | } | |
3536 | if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { | |
3537 | up_read(&fi->i_gc_rwsem[rw]); | |
b91050a8 HL |
3538 | iocb->ki_hint = hint; |
3539 | err = -EAGAIN; | |
3540 | goto out; | |
3541 | } | |
f847c699 CY |
3542 | } else { |
3543 | down_read(&fi->i_gc_rwsem[rw]); | |
3544 | if (do_opu) | |
3545 | down_read(&fi->i_gc_rwsem[READ]); | |
b91050a8 HL |
3546 | } |
3547 | ||
02b16d0a | 3548 | err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, |
f9d6d059 CY |
3549 | iter, rw == WRITE ? get_data_block_dio_write : |
3550 | get_data_block_dio, NULL, f2fs_dio_submit_bio, | |
ad8d6a02 D |
3551 | rw == WRITE ? DIO_LOCKING | DIO_SKIP_HOLES : |
3552 | DIO_SKIP_HOLES); | |
f847c699 CY |
3553 | |
3554 | if (do_opu) | |
3555 | up_read(&fi->i_gc_rwsem[READ]); | |
3556 | ||
3557 | up_read(&fi->i_gc_rwsem[rw]); | |
82e0a5aa CY |
3558 | |
3559 | if (rw == WRITE) { | |
0cdd3195 HL |
3560 | if (whint_mode == WHINT_MODE_OFF) |
3561 | iocb->ki_hint = hint; | |
b0af6d49 CY |
3562 | if (err > 0) { |
3563 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
3564 | err); | |
f847c699 CY |
3565 | if (!do_opu) |
3566 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
335cac8b JQ |
3567 | } else if (err == -EIOCBQUEUED) { |
3568 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
3569 | count - iov_iter_count(iter)); | |
b0af6d49 | 3570 | } else if (err < 0) { |
6bfc4919 | 3571 | f2fs_write_failed(mapping, offset + count); |
b0af6d49 | 3572 | } |
8b83ac81 CY |
3573 | } else { |
3574 | if (err > 0) | |
3575 | f2fs_update_iostat(sbi, APP_DIRECT_READ_IO, err); | |
335cac8b JQ |
3576 | else if (err == -EIOCBQUEUED) |
3577 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_READ_IO, | |
3578 | count - iov_iter_count(iter)); | |
6bfc4919 | 3579 | } |
70407fad | 3580 | |
b91050a8 | 3581 | out: |
5302fb00 | 3582 | trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); |
70407fad | 3583 | |
3aab8f82 | 3584 | return err; |
eb47b800 JK |
3585 | } |
3586 | ||
487261f3 CY |
3587 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
3588 | unsigned int length) | |
eb47b800 JK |
3589 | { |
3590 | struct inode *inode = page->mapping->host; | |
487261f3 | 3591 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 3592 | |
487261f3 | 3593 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 3594 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
3595 | return; |
3596 | ||
487261f3 | 3597 | if (PageDirty(page)) { |
933439c8 | 3598 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 3599 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 3600 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 3601 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 3602 | } else { |
487261f3 | 3603 | inode_dec_dirty_pages(inode); |
4d57b86d | 3604 | f2fs_remove_dirty_inode(inode); |
933439c8 | 3605 | } |
487261f3 | 3606 | } |
decd36b6 | 3607 | |
2baf0781 CY |
3608 | clear_cold_data(page); |
3609 | ||
decd36b6 | 3610 | if (IS_ATOMIC_WRITTEN_PAGE(page)) |
4d57b86d | 3611 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 3612 | |
240a5915 | 3613 | f2fs_clear_page_private(page); |
eb47b800 JK |
3614 | } |
3615 | ||
487261f3 | 3616 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 3617 | { |
f68daeeb JK |
3618 | /* If this is dirty page, keep PagePrivate */ |
3619 | if (PageDirty(page)) | |
3620 | return 0; | |
3621 | ||
decd36b6 CY |
3622 | /* This is atomic written page, keep Private */ |
3623 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
3624 | return 0; | |
3625 | ||
2baf0781 | 3626 | clear_cold_data(page); |
240a5915 | 3627 | f2fs_clear_page_private(page); |
c3850aa1 | 3628 | return 1; |
eb47b800 JK |
3629 | } |
3630 | ||
3631 | static int f2fs_set_data_page_dirty(struct page *page) | |
3632 | { | |
4969c06a | 3633 | struct inode *inode = page_file_mapping(page)->host; |
eb47b800 | 3634 | |
26c6b887 JK |
3635 | trace_f2fs_set_page_dirty(page, DATA); |
3636 | ||
237c0790 JK |
3637 | if (!PageUptodate(page)) |
3638 | SetPageUptodate(page); | |
4969c06a JK |
3639 | if (PageSwapCache(page)) |
3640 | return __set_page_dirty_nobuffers(page); | |
34ba94ba | 3641 | |
5fe45743 | 3642 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
decd36b6 | 3643 | if (!IS_ATOMIC_WRITTEN_PAGE(page)) { |
4d57b86d | 3644 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
3645 | return 1; |
3646 | } | |
3647 | /* | |
3648 | * Previously, this page has been registered, we just | |
3649 | * return here. | |
3650 | */ | |
3651 | return 0; | |
34ba94ba JK |
3652 | } |
3653 | ||
eb47b800 | 3654 | if (!PageDirty(page)) { |
b87078ad | 3655 | __set_page_dirty_nobuffers(page); |
4d57b86d | 3656 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
3657 | return 1; |
3658 | } | |
3659 | return 0; | |
3660 | } | |
3661 | ||
c1c63387 CY |
3662 | |
3663 | static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) | |
3664 | { | |
3665 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3666 | struct dnode_of_data dn; | |
3667 | sector_t start_idx, blknr = 0; | |
3668 | int ret; | |
3669 | ||
3670 | start_idx = round_down(block, F2FS_I(inode)->i_cluster_size); | |
3671 | ||
3672 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
3673 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
3674 | if (ret) | |
3675 | return 0; | |
3676 | ||
3677 | if (dn.data_blkaddr != COMPRESS_ADDR) { | |
3678 | dn.ofs_in_node += block - start_idx; | |
3679 | blknr = f2fs_data_blkaddr(&dn); | |
3680 | if (!__is_valid_data_blkaddr(blknr)) | |
3681 | blknr = 0; | |
3682 | } | |
3683 | ||
3684 | f2fs_put_dnode(&dn); | |
c1c63387 CY |
3685 | return blknr; |
3686 | #else | |
250e84d7 | 3687 | return 0; |
c1c63387 CY |
3688 | #endif |
3689 | } | |
3690 | ||
3691 | ||
c01e54b7 JK |
3692 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
3693 | { | |
454ae7e5 | 3694 | struct inode *inode = mapping->host; |
b79b0a31 | 3695 | sector_t blknr = 0; |
454ae7e5 | 3696 | |
1d373a0e | 3697 | if (f2fs_has_inline_data(inode)) |
b79b0a31 | 3698 | goto out; |
1d373a0e JK |
3699 | |
3700 | /* make sure allocating whole blocks */ | |
3701 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
3702 | filemap_write_and_wait(mapping); | |
3703 | ||
4eda1682 | 3704 | /* Block number less than F2FS MAX BLOCKS */ |
6d1451bf | 3705 | if (unlikely(block >= max_file_blocks(inode))) |
4eda1682 | 3706 | goto out; |
c1c63387 | 3707 | |
4eda1682 DJ |
3708 | if (f2fs_compressed_file(inode)) { |
3709 | blknr = f2fs_bmap_compress(inode, block); | |
3710 | } else { | |
b876f4c9 JK |
3711 | struct f2fs_map_blocks map; |
3712 | ||
3713 | memset(&map, 0, sizeof(map)); | |
3714 | map.m_lblk = block; | |
3715 | map.m_len = 1; | |
3716 | map.m_next_pgofs = NULL; | |
3717 | map.m_seg_type = NO_CHECK_TYPE; | |
3718 | ||
3719 | if (!f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_BMAP)) | |
3720 | blknr = map.m_pblk; | |
4eda1682 | 3721 | } |
b79b0a31 CY |
3722 | out: |
3723 | trace_f2fs_bmap(inode, block, blknr); | |
3724 | return blknr; | |
429511cd CY |
3725 | } |
3726 | ||
5b7a487c WG |
3727 | #ifdef CONFIG_MIGRATION |
3728 | #include <linux/migrate.h> | |
3729 | ||
3730 | int f2fs_migrate_page(struct address_space *mapping, | |
3731 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
3732 | { | |
3733 | int rc, extra_count; | |
3734 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
3735 | bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); | |
3736 | ||
3737 | BUG_ON(PageWriteback(page)); | |
3738 | ||
3739 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
3740 | if (atomic_written) { |
3741 | if (mode != MIGRATE_SYNC) | |
3742 | return -EBUSY; | |
3743 | if (!mutex_trylock(&fi->inmem_lock)) | |
3744 | return -EAGAIN; | |
3745 | } | |
5b7a487c | 3746 | |
240a5915 CY |
3747 | /* one extra reference was held for atomic_write page */ |
3748 | extra_count = atomic_written ? 1 : 0; | |
5b7a487c | 3749 | rc = migrate_page_move_mapping(mapping, newpage, |
37109694 | 3750 | page, extra_count); |
5b7a487c WG |
3751 | if (rc != MIGRATEPAGE_SUCCESS) { |
3752 | if (atomic_written) | |
3753 | mutex_unlock(&fi->inmem_lock); | |
3754 | return rc; | |
3755 | } | |
3756 | ||
3757 | if (atomic_written) { | |
3758 | struct inmem_pages *cur; | |
3759 | list_for_each_entry(cur, &fi->inmem_pages, list) | |
3760 | if (cur->page == page) { | |
3761 | cur->page = newpage; | |
3762 | break; | |
3763 | } | |
3764 | mutex_unlock(&fi->inmem_lock); | |
3765 | put_page(page); | |
3766 | get_page(newpage); | |
3767 | } | |
3768 | ||
240a5915 CY |
3769 | if (PagePrivate(page)) { |
3770 | f2fs_set_page_private(newpage, page_private(page)); | |
3771 | f2fs_clear_page_private(page); | |
3772 | } | |
5b7a487c | 3773 | |
2916ecc0 JG |
3774 | if (mode != MIGRATE_SYNC_NO_COPY) |
3775 | migrate_page_copy(newpage, page); | |
3776 | else | |
3777 | migrate_page_states(newpage, page); | |
5b7a487c WG |
3778 | |
3779 | return MIGRATEPAGE_SUCCESS; | |
3780 | } | |
3781 | #endif | |
3782 | ||
4969c06a | 3783 | #ifdef CONFIG_SWAP |
af4b6b8e CY |
3784 | static int check_swap_activate_fast(struct swap_info_struct *sis, |
3785 | struct file *swap_file, sector_t *span) | |
3786 | { | |
3787 | struct address_space *mapping = swap_file->f_mapping; | |
3788 | struct inode *inode = mapping->host; | |
3789 | sector_t cur_lblock; | |
3790 | sector_t last_lblock; | |
3791 | sector_t pblock; | |
3792 | sector_t lowest_pblock = -1; | |
3793 | sector_t highest_pblock = 0; | |
3794 | int nr_extents = 0; | |
3795 | unsigned long nr_pblocks; | |
963ba7f9 | 3796 | u64 len; |
af4b6b8e CY |
3797 | int ret; |
3798 | ||
3799 | /* | |
3800 | * Map all the blocks into the extent list. This code doesn't try | |
3801 | * to be very smart. | |
3802 | */ | |
3803 | cur_lblock = 0; | |
6cbfcab5 | 3804 | last_lblock = bytes_to_blks(inode, i_size_read(inode)); |
af4b6b8e CY |
3805 | len = i_size_read(inode); |
3806 | ||
3807 | while (cur_lblock <= last_lblock && cur_lblock < sis->max) { | |
b876f4c9 | 3808 | struct f2fs_map_blocks map; |
af4b6b8e CY |
3809 | pgoff_t next_pgofs; |
3810 | ||
3811 | cond_resched(); | |
3812 | ||
b876f4c9 JK |
3813 | memset(&map, 0, sizeof(map)); |
3814 | map.m_lblk = cur_lblock; | |
3815 | map.m_len = bytes_to_blks(inode, len) - cur_lblock; | |
3816 | map.m_next_pgofs = &next_pgofs; | |
3817 | map.m_seg_type = NO_CHECK_TYPE; | |
af4b6b8e | 3818 | |
b876f4c9 | 3819 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
af4b6b8e CY |
3820 | if (ret) |
3821 | goto err_out; | |
3822 | ||
3823 | /* hole */ | |
b876f4c9 | 3824 | if (!(map.m_flags & F2FS_MAP_FLAGS)) |
af4b6b8e CY |
3825 | goto err_out; |
3826 | ||
b876f4c9 JK |
3827 | pblock = map.m_pblk; |
3828 | nr_pblocks = map.m_len; | |
af4b6b8e CY |
3829 | |
3830 | if (cur_lblock + nr_pblocks >= sis->max) | |
3831 | nr_pblocks = sis->max - cur_lblock; | |
3832 | ||
3833 | if (cur_lblock) { /* exclude the header page */ | |
3834 | if (pblock < lowest_pblock) | |
3835 | lowest_pblock = pblock; | |
3836 | if (pblock + nr_pblocks - 1 > highest_pblock) | |
3837 | highest_pblock = pblock + nr_pblocks - 1; | |
3838 | } | |
3839 | ||
3840 | /* | |
3841 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3842 | */ | |
3843 | ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock); | |
3844 | if (ret < 0) | |
3845 | goto out; | |
3846 | nr_extents += ret; | |
3847 | cur_lblock += nr_pblocks; | |
3848 | } | |
3849 | ret = nr_extents; | |
3850 | *span = 1 + highest_pblock - lowest_pblock; | |
3851 | if (cur_lblock == 0) | |
3852 | cur_lblock = 1; /* force Empty message */ | |
3853 | sis->max = cur_lblock; | |
3854 | sis->pages = cur_lblock - 1; | |
3855 | sis->highest_bit = cur_lblock - 1; | |
3856 | out: | |
3857 | return ret; | |
3858 | err_out: | |
3859 | pr_err("swapon: swapfile has holes\n"); | |
3860 | return -EINVAL; | |
3861 | } | |
3862 | ||
4969c06a | 3863 | /* Copied from generic_swapfile_activate() to check any holes */ |
3e5e479a CY |
3864 | static int check_swap_activate(struct swap_info_struct *sis, |
3865 | struct file *swap_file, sector_t *span) | |
4969c06a JK |
3866 | { |
3867 | struct address_space *mapping = swap_file->f_mapping; | |
3868 | struct inode *inode = mapping->host; | |
3869 | unsigned blocks_per_page; | |
3870 | unsigned long page_no; | |
4969c06a JK |
3871 | sector_t probe_block; |
3872 | sector_t last_block; | |
3873 | sector_t lowest_block = -1; | |
3874 | sector_t highest_block = 0; | |
3e5e479a CY |
3875 | int nr_extents = 0; |
3876 | int ret; | |
4969c06a | 3877 | |
af4b6b8e CY |
3878 | if (PAGE_SIZE == F2FS_BLKSIZE) |
3879 | return check_swap_activate_fast(sis, swap_file, span); | |
3880 | ||
43b9d4b4 | 3881 | blocks_per_page = bytes_to_blks(inode, PAGE_SIZE); |
4969c06a JK |
3882 | |
3883 | /* | |
3884 | * Map all the blocks into the extent list. This code doesn't try | |
3885 | * to be very smart. | |
3886 | */ | |
3887 | probe_block = 0; | |
3888 | page_no = 0; | |
43b9d4b4 | 3889 | last_block = bytes_to_blks(inode, i_size_read(inode)); |
3e5e479a CY |
3890 | while ((probe_block + blocks_per_page) <= last_block && |
3891 | page_no < sis->max) { | |
4969c06a JK |
3892 | unsigned block_in_page; |
3893 | sector_t first_block; | |
30460e1e CM |
3894 | sector_t block = 0; |
3895 | int err = 0; | |
4969c06a JK |
3896 | |
3897 | cond_resched(); | |
3898 | ||
30460e1e CM |
3899 | block = probe_block; |
3900 | err = bmap(inode, &block); | |
3901 | if (err || !block) | |
4969c06a | 3902 | goto bad_bmap; |
30460e1e | 3903 | first_block = block; |
4969c06a JK |
3904 | |
3905 | /* | |
3906 | * It must be PAGE_SIZE aligned on-disk | |
3907 | */ | |
3908 | if (first_block & (blocks_per_page - 1)) { | |
3909 | probe_block++; | |
3910 | goto reprobe; | |
3911 | } | |
3912 | ||
3913 | for (block_in_page = 1; block_in_page < blocks_per_page; | |
3914 | block_in_page++) { | |
4969c06a | 3915 | |
30460e1e CM |
3916 | block = probe_block + block_in_page; |
3917 | err = bmap(inode, &block); | |
3918 | ||
3919 | if (err || !block) | |
4969c06a | 3920 | goto bad_bmap; |
30460e1e | 3921 | |
4969c06a JK |
3922 | if (block != first_block + block_in_page) { |
3923 | /* Discontiguity */ | |
3924 | probe_block++; | |
3925 | goto reprobe; | |
3926 | } | |
3927 | } | |
3928 | ||
43b9d4b4 | 3929 | first_block >>= (PAGE_SHIFT - inode->i_blkbits); |
4969c06a JK |
3930 | if (page_no) { /* exclude the header page */ |
3931 | if (first_block < lowest_block) | |
3932 | lowest_block = first_block; | |
3933 | if (first_block > highest_block) | |
3934 | highest_block = first_block; | |
3935 | } | |
3936 | ||
3e5e479a CY |
3937 | /* |
3938 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3939 | */ | |
3940 | ret = add_swap_extent(sis, page_no, 1, first_block); | |
3941 | if (ret < 0) | |
3942 | goto out; | |
3943 | nr_extents += ret; | |
4969c06a JK |
3944 | page_no++; |
3945 | probe_block += blocks_per_page; | |
3946 | reprobe: | |
3947 | continue; | |
3948 | } | |
3e5e479a CY |
3949 | ret = nr_extents; |
3950 | *span = 1 + highest_block - lowest_block; | |
3951 | if (page_no == 0) | |
3952 | page_no = 1; /* force Empty message */ | |
3953 | sis->max = page_no; | |
3954 | sis->pages = page_no - 1; | |
3955 | sis->highest_bit = page_no - 1; | |
3956 | out: | |
3957 | return ret; | |
4969c06a JK |
3958 | bad_bmap: |
3959 | pr_err("swapon: swapfile has holes\n"); | |
3960 | return -EINVAL; | |
3961 | } | |
3962 | ||
3963 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3964 | sector_t *span) | |
3965 | { | |
3966 | struct inode *inode = file_inode(file); | |
3967 | int ret; | |
3968 | ||
3969 | if (!S_ISREG(inode->i_mode)) | |
3970 | return -EINVAL; | |
3971 | ||
3972 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3973 | return -EROFS; | |
3974 | ||
3975 | ret = f2fs_convert_inline_inode(inode); | |
3976 | if (ret) | |
3977 | return ret; | |
3978 | ||
78134d03 | 3979 | if (!f2fs_disable_compressed_file(inode)) |
4c8ff709 CY |
3980 | return -EINVAL; |
3981 | ||
0b979f1b CY |
3982 | f2fs_precache_extents(inode); |
3983 | ||
3e5e479a CY |
3984 | ret = check_swap_activate(sis, file, span); |
3985 | if (ret < 0) | |
4969c06a JK |
3986 | return ret; |
3987 | ||
3988 | set_inode_flag(inode, FI_PIN_FILE); | |
4969c06a | 3989 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3e5e479a | 3990 | return ret; |
4969c06a JK |
3991 | } |
3992 | ||
3993 | static void f2fs_swap_deactivate(struct file *file) | |
3994 | { | |
3995 | struct inode *inode = file_inode(file); | |
3996 | ||
3997 | clear_inode_flag(inode, FI_PIN_FILE); | |
3998 | } | |
3999 | #else | |
4000 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
4001 | sector_t *span) | |
4002 | { | |
4003 | return -EOPNOTSUPP; | |
4004 | } | |
4005 | ||
4006 | static void f2fs_swap_deactivate(struct file *file) | |
4007 | { | |
4008 | } | |
4009 | #endif | |
4010 | ||
eb47b800 JK |
4011 | const struct address_space_operations f2fs_dblock_aops = { |
4012 | .readpage = f2fs_read_data_page, | |
23323196 | 4013 | .readahead = f2fs_readahead, |
eb47b800 JK |
4014 | .writepage = f2fs_write_data_page, |
4015 | .writepages = f2fs_write_data_pages, | |
4016 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 4017 | .write_end = f2fs_write_end, |
eb47b800 | 4018 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
4019 | .invalidatepage = f2fs_invalidate_page, |
4020 | .releasepage = f2fs_release_page, | |
eb47b800 | 4021 | .direct_IO = f2fs_direct_IO, |
c01e54b7 | 4022 | .bmap = f2fs_bmap, |
4969c06a JK |
4023 | .swap_activate = f2fs_swap_activate, |
4024 | .swap_deactivate = f2fs_swap_deactivate, | |
5b7a487c WG |
4025 | #ifdef CONFIG_MIGRATION |
4026 | .migratepage = f2fs_migrate_page, | |
4027 | #endif | |
eb47b800 | 4028 | }; |
6dbb1796 | 4029 | |
5ec2d99d | 4030 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
4031 | { |
4032 | struct address_space *mapping = page_mapping(page); | |
4033 | unsigned long flags; | |
4034 | ||
4035 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 4036 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
4037 | PAGECACHE_TAG_DIRTY); |
4038 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
4039 | } | |
4040 | ||
6dbb1796 EB |
4041 | int __init f2fs_init_post_read_processing(void) |
4042 | { | |
95ae251f EB |
4043 | bio_post_read_ctx_cache = |
4044 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
4045 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
4046 | if (!bio_post_read_ctx_cache) |
4047 | goto fail; | |
4048 | bio_post_read_ctx_pool = | |
4049 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
4050 | bio_post_read_ctx_cache); | |
4051 | if (!bio_post_read_ctx_pool) | |
4052 | goto fail_free_cache; | |
4053 | return 0; | |
4054 | ||
4055 | fail_free_cache: | |
4056 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4057 | fail: | |
4058 | return -ENOMEM; | |
4059 | } | |
4060 | ||
0b20fcec | 4061 | void f2fs_destroy_post_read_processing(void) |
6dbb1796 EB |
4062 | { |
4063 | mempool_destroy(bio_post_read_ctx_pool); | |
4064 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4065 | } | |
0b20fcec | 4066 | |
4c8ff709 CY |
4067 | int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) |
4068 | { | |
4069 | if (!f2fs_sb_has_encrypt(sbi) && | |
4070 | !f2fs_sb_has_verity(sbi) && | |
4071 | !f2fs_sb_has_compression(sbi)) | |
4072 | return 0; | |
4073 | ||
4074 | sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", | |
4075 | WQ_UNBOUND | WQ_HIGHPRI, | |
4076 | num_online_cpus()); | |
4077 | if (!sbi->post_read_wq) | |
4078 | return -ENOMEM; | |
4079 | return 0; | |
4080 | } | |
4081 | ||
4082 | void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) | |
4083 | { | |
4084 | if (sbi->post_read_wq) | |
4085 | destroy_workqueue(sbi->post_read_wq); | |
4086 | } | |
4087 | ||
0b20fcec CY |
4088 | int __init f2fs_init_bio_entry_cache(void) |
4089 | { | |
98510003 | 4090 | bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab", |
0b20fcec CY |
4091 | sizeof(struct bio_entry)); |
4092 | if (!bio_entry_slab) | |
4093 | return -ENOMEM; | |
4094 | return 0; | |
4095 | } | |
4096 | ||
f543805f | 4097 | void f2fs_destroy_bio_entry_cache(void) |
0b20fcec CY |
4098 | { |
4099 | kmem_cache_destroy(bio_entry_slab); | |
4100 | } |