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> | |
690e4a3e | 17 | #include <linux/prefetch.h> |
e2e40f2c | 18 | #include <linux/uio.h> |
f1e88660 | 19 | #include <linux/cleancache.h> |
174cd4b1 | 20 | #include <linux/sched/signal.h> |
eb47b800 JK |
21 | |
22 | #include "f2fs.h" | |
23 | #include "node.h" | |
24 | #include "segment.h" | |
db9f7c1a | 25 | #include "trace.h" |
848753aa | 26 | #include <trace/events/f2fs.h> |
eb47b800 | 27 | |
6dbb1796 EB |
28 | #define NUM_PREALLOC_POST_READ_CTXS 128 |
29 | ||
30 | static struct kmem_cache *bio_post_read_ctx_cache; | |
31 | static mempool_t *bio_post_read_ctx_pool; | |
32 | ||
36951b38 CY |
33 | static bool __is_cp_guaranteed(struct page *page) |
34 | { | |
35 | struct address_space *mapping = page->mapping; | |
36 | struct inode *inode; | |
37 | struct f2fs_sb_info *sbi; | |
38 | ||
39 | if (!mapping) | |
40 | return false; | |
41 | ||
42 | inode = mapping->host; | |
43 | sbi = F2FS_I_SB(inode); | |
44 | ||
45 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
46 | inode->i_ino == F2FS_NODE_INO(sbi) || | |
47 | S_ISDIR(inode->i_mode) || | |
e7a4feb0 | 48 | (S_ISREG(inode->i_mode) && |
af033b2a | 49 | (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || |
36951b38 CY |
50 | is_cold_data(page)) |
51 | return true; | |
52 | return false; | |
53 | } | |
54 | ||
5f9abab4 JK |
55 | static enum count_type __read_io_type(struct page *page) |
56 | { | |
57 | struct address_space *mapping = page->mapping; | |
58 | ||
59 | if (mapping) { | |
60 | struct inode *inode = mapping->host; | |
61 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
62 | ||
63 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
64 | return F2FS_RD_META; | |
65 | ||
66 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
67 | return F2FS_RD_NODE; | |
68 | } | |
69 | return F2FS_RD_DATA; | |
70 | } | |
71 | ||
6dbb1796 EB |
72 | /* postprocessing steps for read bios */ |
73 | enum bio_post_read_step { | |
74 | STEP_INITIAL = 0, | |
75 | STEP_DECRYPT, | |
76 | }; | |
77 | ||
78 | struct bio_post_read_ctx { | |
79 | struct bio *bio; | |
80 | struct work_struct work; | |
81 | unsigned int cur_step; | |
82 | unsigned int enabled_steps; | |
83 | }; | |
84 | ||
85 | static void __read_end_io(struct bio *bio) | |
93dfe2ac | 86 | { |
6dbb1796 EB |
87 | struct page *page; |
88 | struct bio_vec *bv; | |
f568849e | 89 | int i; |
93dfe2ac | 90 | |
6dbb1796 EB |
91 | bio_for_each_segment_all(bv, bio, i) { |
92 | page = bv->bv_page; | |
93 | ||
94 | /* PG_error was set if any post_read step failed */ | |
95 | if (bio->bi_status || PageError(page)) { | |
96 | ClearPageUptodate(page); | |
fb7d70db JK |
97 | /* will re-read again later */ |
98 | ClearPageError(page); | |
6dbb1796 EB |
99 | } else { |
100 | SetPageUptodate(page); | |
101 | } | |
5f9abab4 | 102 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
103 | unlock_page(page); |
104 | } | |
105 | if (bio->bi_private) | |
106 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
107 | bio_put(bio); | |
108 | } | |
109 | ||
110 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx); | |
111 | ||
112 | static void decrypt_work(struct work_struct *work) | |
113 | { | |
114 | struct bio_post_read_ctx *ctx = | |
115 | container_of(work, struct bio_post_read_ctx, work); | |
116 | ||
117 | fscrypt_decrypt_bio(ctx->bio); | |
118 | ||
119 | bio_post_read_processing(ctx); | |
120 | } | |
121 | ||
122 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx) | |
123 | { | |
124 | switch (++ctx->cur_step) { | |
125 | case STEP_DECRYPT: | |
126 | if (ctx->enabled_steps & (1 << STEP_DECRYPT)) { | |
127 | INIT_WORK(&ctx->work, decrypt_work); | |
128 | fscrypt_enqueue_decrypt_work(&ctx->work); | |
129 | return; | |
130 | } | |
131 | ctx->cur_step++; | |
132 | /* fall-through */ | |
133 | default: | |
134 | __read_end_io(ctx->bio); | |
135 | } | |
136 | } | |
137 | ||
138 | static bool f2fs_bio_post_read_required(struct bio *bio) | |
139 | { | |
140 | return bio->bi_private && !bio->bi_status; | |
141 | } | |
142 | ||
143 | static void f2fs_read_end_io(struct bio *bio) | |
144 | { | |
6f5c2ed0 CY |
145 | if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)), |
146 | FAULT_READ_IO)) { | |
147 | f2fs_show_injection_info(FAULT_READ_IO); | |
4e4cbee9 | 148 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 149 | } |
8b038c70 | 150 | |
6dbb1796 EB |
151 | if (f2fs_bio_post_read_required(bio)) { |
152 | struct bio_post_read_ctx *ctx = bio->bi_private; | |
f1e88660 | 153 | |
6dbb1796 EB |
154 | ctx->cur_step = STEP_INITIAL; |
155 | bio_post_read_processing(ctx); | |
156 | return; | |
f1e88660 | 157 | } |
6dbb1796 EB |
158 | |
159 | __read_end_io(bio); | |
f1e88660 JK |
160 | } |
161 | ||
4246a0b6 | 162 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 163 | { |
1b1f559f | 164 | struct f2fs_sb_info *sbi = bio->bi_private; |
f568849e LT |
165 | struct bio_vec *bvec; |
166 | int i; | |
93dfe2ac | 167 | |
6f5c2ed0 CY |
168 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
169 | f2fs_show_injection_info(FAULT_WRITE_IO); | |
170 | bio->bi_status = BLK_STS_IOERR; | |
171 | } | |
172 | ||
f568849e | 173 | bio_for_each_segment_all(bvec, bio, i) { |
93dfe2ac | 174 | struct page *page = bvec->bv_page; |
36951b38 | 175 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 176 | |
0a595eba JK |
177 | if (IS_DUMMY_WRITTEN_PAGE(page)) { |
178 | set_page_private(page, (unsigned long)NULL); | |
179 | ClearPagePrivate(page); | |
180 | unlock_page(page); | |
181 | mempool_free(page, sbi->write_io_dummy); | |
182 | ||
4e4cbee9 | 183 | if (unlikely(bio->bi_status)) |
0a595eba JK |
184 | f2fs_stop_checkpoint(sbi, true); |
185 | continue; | |
186 | } | |
187 | ||
0b81d077 | 188 | fscrypt_pullback_bio_page(&page, true); |
4375a336 | 189 | |
4e4cbee9 | 190 | if (unlikely(bio->bi_status)) { |
5114a97a | 191 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
192 | if (type == F2FS_WB_CP_DATA) |
193 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 194 | } |
7dff55d2 YH |
195 | |
196 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
197 | page->index != nid_of_node(page)); | |
198 | ||
36951b38 | 199 | dec_page_count(sbi, type); |
50fa53ec CY |
200 | if (f2fs_in_warm_node_list(sbi, page)) |
201 | f2fs_del_fsync_node_entry(sbi, page); | |
36951b38 | 202 | clear_cold_data(page); |
93dfe2ac | 203 | end_page_writeback(page); |
f568849e | 204 | } |
36951b38 | 205 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 206 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
207 | wake_up(&sbi->cp_wait); |
208 | ||
209 | bio_put(bio); | |
210 | } | |
211 | ||
3c62be17 JK |
212 | /* |
213 | * Return true, if pre_bio's bdev is same as its target device. | |
214 | */ | |
215 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, | |
216 | block_t blk_addr, struct bio *bio) | |
217 | { | |
218 | struct block_device *bdev = sbi->sb->s_bdev; | |
219 | int i; | |
220 | ||
221 | for (i = 0; i < sbi->s_ndevs; i++) { | |
222 | if (FDEV(i).start_blk <= blk_addr && | |
223 | FDEV(i).end_blk >= blk_addr) { | |
224 | blk_addr -= FDEV(i).start_blk; | |
225 | bdev = FDEV(i).bdev; | |
226 | break; | |
227 | } | |
228 | } | |
229 | if (bio) { | |
74d46992 | 230 | bio_set_dev(bio, bdev); |
3c62be17 JK |
231 | bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |
232 | } | |
233 | return bdev; | |
234 | } | |
235 | ||
236 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
237 | { | |
238 | int i; | |
239 | ||
240 | for (i = 0; i < sbi->s_ndevs; i++) | |
241 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
242 | return i; | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static bool __same_bdev(struct f2fs_sb_info *sbi, | |
247 | block_t blk_addr, struct bio *bio) | |
248 | { | |
74d46992 CH |
249 | struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); |
250 | return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; | |
3c62be17 JK |
251 | } |
252 | ||
940a6d34 GZ |
253 | /* |
254 | * Low-level block read/write IO operations. | |
255 | */ | |
256 | static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, | |
578c6478 | 257 | struct writeback_control *wbc, |
0cdd3195 HL |
258 | int npages, bool is_read, |
259 | enum page_type type, enum temp_type temp) | |
940a6d34 GZ |
260 | { |
261 | struct bio *bio; | |
262 | ||
d62fe971 | 263 | bio = f2fs_bio_alloc(sbi, npages, true); |
940a6d34 | 264 | |
3c62be17 | 265 | f2fs_target_device(sbi, blk_addr, bio); |
0cdd3195 HL |
266 | if (is_read) { |
267 | bio->bi_end_io = f2fs_read_end_io; | |
268 | bio->bi_private = NULL; | |
269 | } else { | |
270 | bio->bi_end_io = f2fs_write_end_io; | |
271 | bio->bi_private = sbi; | |
4d57b86d | 272 | bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, type, temp); |
0cdd3195 | 273 | } |
578c6478 YY |
274 | if (wbc) |
275 | wbc_init_bio(wbc, bio); | |
940a6d34 GZ |
276 | |
277 | return bio; | |
278 | } | |
279 | ||
4fc29c1a LT |
280 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
281 | struct bio *bio, enum page_type type) | |
f5730184 | 282 | { |
4fc29c1a | 283 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
284 | unsigned int start; |
285 | ||
0a595eba JK |
286 | if (type != DATA && type != NODE) |
287 | goto submit_io; | |
288 | ||
66415cee | 289 | if (test_opt(sbi, LFS) && current->plug) |
3bb09a0e TY |
290 | blk_finish_plug(current->plug); |
291 | ||
0a595eba JK |
292 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
293 | start %= F2FS_IO_SIZE(sbi); | |
294 | ||
295 | if (start == 0) | |
296 | goto submit_io; | |
297 | ||
298 | /* fill dummy pages */ | |
299 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
300 | struct page *page = | |
301 | mempool_alloc(sbi->write_io_dummy, | |
302 | GFP_NOIO | __GFP_ZERO | __GFP_NOFAIL); | |
303 | f2fs_bug_on(sbi, !page); | |
304 | ||
305 | SetPagePrivate(page); | |
306 | set_page_private(page, (unsigned long)DUMMY_WRITTEN_PAGE); | |
307 | lock_page(page); | |
308 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) | |
309 | f2fs_bug_on(sbi, 1); | |
310 | } | |
311 | /* | |
312 | * In the NODE case, we lose next block address chain. So, we | |
313 | * need to do checkpoint in f2fs_sync_file. | |
314 | */ | |
315 | if (type == NODE) | |
316 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 317 | } |
0a595eba | 318 | submit_io: |
554b5125 JK |
319 | if (is_read_io(bio_op(bio))) |
320 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
321 | else | |
322 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
4e49ea4a | 323 | submit_bio(bio); |
f5730184 JK |
324 | } |
325 | ||
458e6197 | 326 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 327 | { |
458e6197 | 328 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
329 | |
330 | if (!io->bio) | |
331 | return; | |
332 | ||
554b5125 JK |
333 | bio_set_op_attrs(io->bio, fio->op, fio->op_flags); |
334 | ||
04d328de | 335 | if (is_read_io(fio->op)) |
554b5125 | 336 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 337 | else |
554b5125 | 338 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 339 | |
4fc29c1a | 340 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
341 | io->bio = NULL; |
342 | } | |
343 | ||
bab475c5 CY |
344 | static bool __has_merged_page(struct f2fs_bio_info *io, struct inode *inode, |
345 | struct page *page, nid_t ino) | |
0fd785eb | 346 | { |
0fd785eb CY |
347 | struct bio_vec *bvec; |
348 | struct page *target; | |
349 | int i; | |
350 | ||
0c3a5797 | 351 | if (!io->bio) |
0fd785eb | 352 | return false; |
0c3a5797 | 353 | |
bab475c5 | 354 | if (!inode && !page && !ino) |
0c3a5797 | 355 | return true; |
0fd785eb CY |
356 | |
357 | bio_for_each_segment_all(bvec, io->bio, i) { | |
358 | ||
0b81d077 | 359 | if (bvec->bv_page->mapping) |
0fd785eb | 360 | target = bvec->bv_page; |
0b81d077 JK |
361 | else |
362 | target = fscrypt_control_page(bvec->bv_page); | |
0fd785eb | 363 | |
0c3a5797 CY |
364 | if (inode && inode == target->mapping->host) |
365 | return true; | |
bab475c5 CY |
366 | if (page && page == target) |
367 | return true; | |
0c3a5797 | 368 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 369 | return true; |
0fd785eb CY |
370 | } |
371 | ||
0fd785eb CY |
372 | return false; |
373 | } | |
374 | ||
0c3a5797 | 375 | static bool has_merged_page(struct f2fs_sb_info *sbi, struct inode *inode, |
bab475c5 CY |
376 | struct page *page, nid_t ino, |
377 | enum page_type type) | |
0c3a5797 CY |
378 | { |
379 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d JK |
380 | enum temp_type temp; |
381 | struct f2fs_bio_info *io; | |
382 | bool ret = false; | |
0c3a5797 | 383 | |
a912b54d JK |
384 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { |
385 | io = sbi->write_io[btype] + temp; | |
386 | ||
387 | down_read(&io->io_rwsem); | |
bab475c5 | 388 | ret = __has_merged_page(io, inode, page, ino); |
a912b54d | 389 | up_read(&io->io_rwsem); |
0c3a5797 | 390 | |
a912b54d JK |
391 | /* TODO: use HOT temp only for meta pages now. */ |
392 | if (ret || btype == META) | |
393 | break; | |
394 | } | |
0c3a5797 CY |
395 | return ret; |
396 | } | |
397 | ||
b9109b0e | 398 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 399 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
400 | { |
401 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 402 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 403 | |
df0f8dc0 | 404 | down_write(&io->io_rwsem); |
458e6197 JK |
405 | |
406 | /* change META to META_FLUSH in the checkpoint procedure */ | |
407 | if (type >= META_FLUSH) { | |
408 | io->fio.type = META_FLUSH; | |
04d328de | 409 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 410 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 411 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 412 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
413 | } |
414 | __submit_merged_bio(io); | |
df0f8dc0 | 415 | up_write(&io->io_rwsem); |
93dfe2ac JK |
416 | } |
417 | ||
a912b54d | 418 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
419 | struct inode *inode, struct page *page, |
420 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 421 | { |
a912b54d JK |
422 | enum temp_type temp; |
423 | ||
bab475c5 | 424 | if (!force && !has_merged_page(sbi, inode, page, ino, type)) |
a912b54d JK |
425 | return; |
426 | ||
427 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
428 | ||
429 | __f2fs_submit_merged_write(sbi, type, temp); | |
430 | ||
431 | /* TODO: use HOT temp only for meta pages now. */ | |
432 | if (type >= META) | |
433 | break; | |
434 | } | |
0c3a5797 CY |
435 | } |
436 | ||
b9109b0e | 437 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 438 | { |
a912b54d | 439 | __submit_merged_write_cond(sbi, NULL, 0, 0, type, true); |
0c3a5797 CY |
440 | } |
441 | ||
b9109b0e | 442 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
443 | struct inode *inode, struct page *page, |
444 | nid_t ino, enum page_type type) | |
0c3a5797 | 445 | { |
bab475c5 | 446 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
447 | } |
448 | ||
b9109b0e | 449 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 450 | { |
b9109b0e JK |
451 | f2fs_submit_merged_write(sbi, DATA); |
452 | f2fs_submit_merged_write(sbi, NODE); | |
453 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
454 | } |
455 | ||
93dfe2ac JK |
456 | /* |
457 | * Fill the locked page with data located in the block address. | |
771a9a71 | 458 | * A caller needs to unlock the page on failure. |
93dfe2ac | 459 | */ |
05ca3632 | 460 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 461 | { |
93dfe2ac | 462 | struct bio *bio; |
0b81d077 JK |
463 | struct page *page = fio->encrypted_page ? |
464 | fio->encrypted_page : fio->page; | |
93dfe2ac | 465 | |
c9b60788 CY |
466 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
467 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
468 | return -EFAULT; | |
469 | ||
2ace38e0 | 470 | trace_f2fs_submit_page_bio(page, fio); |
05ca3632 | 471 | f2fs_trace_ios(fio, 0); |
93dfe2ac JK |
472 | |
473 | /* Allocate a new bio */ | |
578c6478 | 474 | bio = __bio_alloc(fio->sbi, fio->new_blkaddr, fio->io_wbc, |
0cdd3195 | 475 | 1, is_read_io(fio->op), fio->type, fio->temp); |
93dfe2ac | 476 | |
09cbfeaf | 477 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 478 | bio_put(bio); |
93dfe2ac JK |
479 | return -EFAULT; |
480 | } | |
78efac53 CY |
481 | |
482 | if (fio->io_wbc && !is_read_io(fio->op)) | |
483 | wbc_account_io(fio->io_wbc, page, PAGE_SIZE); | |
484 | ||
04d328de | 485 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 486 | |
5f9abab4 JK |
487 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
488 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
489 | |
490 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
491 | return 0; |
492 | } | |
493 | ||
fe16efe6 | 494 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 495 | { |
05ca3632 | 496 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 497 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 498 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 499 | struct page *bio_page; |
93dfe2ac | 500 | |
b9109b0e | 501 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 502 | |
fb830fc5 CY |
503 | down_write(&io->io_rwsem); |
504 | next: | |
505 | if (fio->in_list) { | |
506 | spin_lock(&io->io_lock); | |
507 | if (list_empty(&io->io_list)) { | |
508 | spin_unlock(&io->io_lock); | |
fe16efe6 | 509 | goto out; |
fb830fc5 CY |
510 | } |
511 | fio = list_first_entry(&io->io_list, | |
512 | struct f2fs_io_info, list); | |
513 | list_del(&fio->list); | |
514 | spin_unlock(&io->io_lock); | |
515 | } | |
93dfe2ac | 516 | |
e1da7872 | 517 | if (__is_valid_data_blkaddr(fio->old_blkaddr)) |
0833721e YH |
518 | verify_block_addr(fio, fio->old_blkaddr); |
519 | verify_block_addr(fio, fio->new_blkaddr); | |
93dfe2ac | 520 | |
36951b38 CY |
521 | bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page; |
522 | ||
ebf7c522 TM |
523 | /* set submitted = true as a return value */ |
524 | fio->submitted = true; | |
d68f735b | 525 | |
b9109b0e | 526 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 527 | |
7a9d7548 | 528 | if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1 || |
3c62be17 JK |
529 | (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags) || |
530 | !__same_bdev(sbi, fio->new_blkaddr, io->bio))) | |
458e6197 | 531 | __submit_merged_bio(io); |
93dfe2ac JK |
532 | alloc_new: |
533 | if (io->bio == NULL) { | |
0a595eba JK |
534 | if ((fio->type == DATA || fio->type == NODE) && |
535 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { | |
b9109b0e | 536 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
537 | fio->retry = true; |
538 | goto skip; | |
0a595eba | 539 | } |
578c6478 | 540 | io->bio = __bio_alloc(sbi, fio->new_blkaddr, fio->io_wbc, |
0cdd3195 HL |
541 | BIO_MAX_PAGES, false, |
542 | fio->type, fio->temp); | |
458e6197 | 543 | io->fio = *fio; |
93dfe2ac JK |
544 | } |
545 | ||
a912b54d | 546 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 547 | __submit_merged_bio(io); |
93dfe2ac JK |
548 | goto alloc_new; |
549 | } | |
550 | ||
578c6478 YY |
551 | if (fio->io_wbc) |
552 | wbc_account_io(fio->io_wbc, bio_page, PAGE_SIZE); | |
553 | ||
7a9d7548 | 554 | io->last_block_in_bio = fio->new_blkaddr; |
05ca3632 | 555 | f2fs_trace_ios(fio, 0); |
fb830fc5 CY |
556 | |
557 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 558 | skip: |
fb830fc5 CY |
559 | if (fio->in_list) |
560 | goto next; | |
fe16efe6 | 561 | out: |
4354994f DR |
562 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
563 | f2fs_is_checkpoint_ready(sbi)) | |
5ce80586 | 564 | __submit_merged_bio(io); |
df0f8dc0 | 565 | up_write(&io->io_rwsem); |
93dfe2ac JK |
566 | } |
567 | ||
13ba41e3 | 568 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
e2e59414 | 569 | unsigned nr_pages, unsigned op_flag) |
13ba41e3 JK |
570 | { |
571 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 572 | struct bio *bio; |
6dbb1796 EB |
573 | struct bio_post_read_ctx *ctx; |
574 | unsigned int post_read_steps = 0; | |
13ba41e3 | 575 | |
91291e99 CY |
576 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) |
577 | return ERR_PTR(-EFAULT); | |
578 | ||
d62fe971 | 579 | bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false); |
6dbb1796 | 580 | if (!bio) |
13ba41e3 | 581 | return ERR_PTR(-ENOMEM); |
13ba41e3 JK |
582 | f2fs_target_device(sbi, blkaddr, bio); |
583 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 584 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 585 | |
6dbb1796 EB |
586 | if (f2fs_encrypted_file(inode)) |
587 | post_read_steps |= 1 << STEP_DECRYPT; | |
588 | if (post_read_steps) { | |
589 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); | |
590 | if (!ctx) { | |
591 | bio_put(bio); | |
592 | return ERR_PTR(-ENOMEM); | |
593 | } | |
594 | ctx->bio = bio; | |
595 | ctx->enabled_steps = post_read_steps; | |
596 | bio->bi_private = ctx; | |
6dbb1796 EB |
597 | } |
598 | ||
13ba41e3 JK |
599 | return bio; |
600 | } | |
601 | ||
602 | /* This can handle encryption stuffs */ | |
603 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
604 | block_t blkaddr) | |
605 | { | |
e2e59414 | 606 | struct bio *bio = f2fs_grab_read_bio(inode, blkaddr, 1, 0); |
13ba41e3 JK |
607 | |
608 | if (IS_ERR(bio)) | |
609 | return PTR_ERR(bio); | |
610 | ||
0ded69f6 JK |
611 | /* wait for GCed page writeback via META_MAPPING */ |
612 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
613 | ||
13ba41e3 JK |
614 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
615 | bio_put(bio); | |
616 | return -EFAULT; | |
617 | } | |
fb7d70db | 618 | ClearPageError(page); |
5f9abab4 | 619 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); |
13ba41e3 JK |
620 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
621 | return 0; | |
622 | } | |
623 | ||
46008c6d CY |
624 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
625 | { | |
626 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
627 | __le32 *addr_array; | |
7a2af766 CY |
628 | int base = 0; |
629 | ||
630 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
631 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
632 | |
633 | /* Get physical address of data block */ | |
634 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 635 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
636 | } |
637 | ||
0a8165d7 | 638 | /* |
eb47b800 JK |
639 | * Lock ordering for the change of data block address: |
640 | * ->data_page | |
641 | * ->node_page | |
642 | * update block addresses in the node page | |
643 | */ | |
4d57b86d | 644 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 645 | { |
46008c6d CY |
646 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true); |
647 | __set_data_blkaddr(dn); | |
648 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 649 | dn->node_changed = true; |
eb47b800 JK |
650 | } |
651 | ||
f28b3434 CY |
652 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
653 | { | |
654 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 655 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
656 | f2fs_update_extent_cache(dn); |
657 | } | |
658 | ||
46008c6d | 659 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 660 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 661 | { |
4081363f | 662 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 663 | int err; |
eb47b800 | 664 | |
46008c6d CY |
665 | if (!count) |
666 | return 0; | |
667 | ||
91942321 | 668 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 669 | return -EPERM; |
0abd675e CY |
670 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
671 | return err; | |
eb47b800 | 672 | |
46008c6d CY |
673 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
674 | dn->ofs_in_node, count); | |
675 | ||
676 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true); | |
677 | ||
678 | for (; count > 0; dn->ofs_in_node++) { | |
7a2af766 CY |
679 | block_t blkaddr = datablock_addr(dn->inode, |
680 | dn->node_page, dn->ofs_in_node); | |
46008c6d CY |
681 | if (blkaddr == NULL_ADDR) { |
682 | dn->data_blkaddr = NEW_ADDR; | |
683 | __set_data_blkaddr(dn); | |
684 | count--; | |
685 | } | |
686 | } | |
687 | ||
688 | if (set_page_dirty(dn->node_page)) | |
689 | dn->node_changed = true; | |
eb47b800 JK |
690 | return 0; |
691 | } | |
692 | ||
46008c6d | 693 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 694 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
695 | { |
696 | unsigned int ofs_in_node = dn->ofs_in_node; | |
697 | int ret; | |
698 | ||
4d57b86d | 699 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
700 | dn->ofs_in_node = ofs_in_node; |
701 | return ret; | |
702 | } | |
703 | ||
b600965c HL |
704 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
705 | { | |
706 | bool need_put = dn->inode_page ? false : true; | |
707 | int err; | |
708 | ||
4d57b86d | 709 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
710 | if (err) |
711 | return err; | |
a8865372 | 712 | |
b600965c | 713 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 714 | err = f2fs_reserve_new_block(dn); |
a8865372 | 715 | if (err || need_put) |
b600965c HL |
716 | f2fs_put_dnode(dn); |
717 | return err; | |
718 | } | |
719 | ||
759af1c9 | 720 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 721 | { |
e15882b6 | 722 | struct extent_info ei = {0,0,0}; |
759af1c9 | 723 | struct inode *inode = dn->inode; |
028a41e8 | 724 | |
759af1c9 FL |
725 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
726 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
727 | return 0; | |
429511cd | 728 | } |
028a41e8 | 729 | |
759af1c9 | 730 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
731 | } |
732 | ||
4d57b86d | 733 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 734 | int op_flags, bool for_write) |
eb47b800 | 735 | { |
eb47b800 JK |
736 | struct address_space *mapping = inode->i_mapping; |
737 | struct dnode_of_data dn; | |
738 | struct page *page; | |
e15882b6 | 739 | struct extent_info ei = {0,0,0}; |
eb47b800 | 740 | int err; |
4375a336 | 741 | |
a56c7c6f | 742 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
743 | if (!page) |
744 | return ERR_PTR(-ENOMEM); | |
745 | ||
cb3bc9ee CY |
746 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
747 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
748 | goto got_it; | |
749 | } | |
750 | ||
eb47b800 | 751 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 752 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
753 | if (err) |
754 | goto put_err; | |
eb47b800 JK |
755 | f2fs_put_dnode(&dn); |
756 | ||
6bacf52f | 757 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
758 | err = -ENOENT; |
759 | goto put_err; | |
650495de | 760 | } |
cb3bc9ee | 761 | got_it: |
43f3eae1 JK |
762 | if (PageUptodate(page)) { |
763 | unlock_page(page); | |
eb47b800 | 764 | return page; |
43f3eae1 | 765 | } |
eb47b800 | 766 | |
d59ff4df JK |
767 | /* |
768 | * A new dentry page is allocated but not able to be written, since its | |
769 | * new inode page couldn't be allocated due to -ENOSPC. | |
770 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
771 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
772 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
773 | */ |
774 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 775 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
776 | if (!PageUptodate(page)) |
777 | SetPageUptodate(page); | |
43f3eae1 | 778 | unlock_page(page); |
d59ff4df JK |
779 | return page; |
780 | } | |
eb47b800 | 781 | |
13ba41e3 | 782 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr); |
393ff91f | 783 | if (err) |
86531d6b | 784 | goto put_err; |
43f3eae1 | 785 | return page; |
86531d6b JK |
786 | |
787 | put_err: | |
788 | f2fs_put_page(page, 1); | |
789 | return ERR_PTR(err); | |
43f3eae1 JK |
790 | } |
791 | ||
4d57b86d | 792 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
793 | { |
794 | struct address_space *mapping = inode->i_mapping; | |
795 | struct page *page; | |
796 | ||
797 | page = find_get_page(mapping, index); | |
798 | if (page && PageUptodate(page)) | |
799 | return page; | |
800 | f2fs_put_page(page, 0); | |
801 | ||
4d57b86d | 802 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
803 | if (IS_ERR(page)) |
804 | return page; | |
805 | ||
806 | if (PageUptodate(page)) | |
807 | return page; | |
808 | ||
809 | wait_on_page_locked(page); | |
810 | if (unlikely(!PageUptodate(page))) { | |
811 | f2fs_put_page(page, 0); | |
812 | return ERR_PTR(-EIO); | |
813 | } | |
814 | return page; | |
815 | } | |
816 | ||
817 | /* | |
818 | * If it tries to access a hole, return an error. | |
819 | * Because, the callers, functions in dir.c and GC, should be able to know | |
820 | * whether this page exists or not. | |
821 | */ | |
4d57b86d | 822 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 823 | bool for_write) |
43f3eae1 JK |
824 | { |
825 | struct address_space *mapping = inode->i_mapping; | |
826 | struct page *page; | |
827 | repeat: | |
4d57b86d | 828 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
829 | if (IS_ERR(page)) |
830 | return page; | |
393ff91f | 831 | |
43f3eae1 | 832 | /* wait for read completion */ |
393ff91f | 833 | lock_page(page); |
6bacf52f | 834 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
835 | f2fs_put_page(page, 1); |
836 | goto repeat; | |
eb47b800 | 837 | } |
1563ac75 CY |
838 | if (unlikely(!PageUptodate(page))) { |
839 | f2fs_put_page(page, 1); | |
840 | return ERR_PTR(-EIO); | |
841 | } | |
eb47b800 JK |
842 | return page; |
843 | } | |
844 | ||
0a8165d7 | 845 | /* |
eb47b800 JK |
846 | * Caller ensures that this data page is never allocated. |
847 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 848 | * |
4f4124d0 CY |
849 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
850 | * f2fs_unlock_op(). | |
470f00e9 CY |
851 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
852 | * ipage should be released by this function. | |
eb47b800 | 853 | */ |
4d57b86d | 854 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 855 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 856 | { |
eb47b800 JK |
857 | struct address_space *mapping = inode->i_mapping; |
858 | struct page *page; | |
859 | struct dnode_of_data dn; | |
860 | int err; | |
7612118a | 861 | |
a56c7c6f | 862 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
863 | if (!page) { |
864 | /* | |
865 | * before exiting, we should make sure ipage will be released | |
866 | * if any error occur. | |
867 | */ | |
868 | f2fs_put_page(ipage, 1); | |
01f28610 | 869 | return ERR_PTR(-ENOMEM); |
470f00e9 | 870 | } |
eb47b800 | 871 | |
a8865372 | 872 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 873 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
874 | if (err) { |
875 | f2fs_put_page(page, 1); | |
eb47b800 | 876 | return ERR_PTR(err); |
a8865372 | 877 | } |
01f28610 JK |
878 | if (!ipage) |
879 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
880 | |
881 | if (PageUptodate(page)) | |
01f28610 | 882 | goto got_it; |
eb47b800 JK |
883 | |
884 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 885 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
886 | if (!PageUptodate(page)) |
887 | SetPageUptodate(page); | |
eb47b800 | 888 | } else { |
4375a336 | 889 | f2fs_put_page(page, 1); |
a8865372 | 890 | |
7612118a JK |
891 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
892 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 893 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 894 | if (IS_ERR(page)) |
7612118a | 895 | return page; |
eb47b800 | 896 | } |
01f28610 | 897 | got_it: |
9edcdabf | 898 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 899 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 900 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
901 | return page; |
902 | } | |
903 | ||
d5097be5 | 904 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 905 | { |
4081363f | 906 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 907 | struct f2fs_summary sum; |
bfad7c2d | 908 | struct node_info ni; |
6aa58d8a | 909 | block_t old_blkaddr; |
46008c6d | 910 | blkcnt_t count = 1; |
0abd675e | 911 | int err; |
bfad7c2d | 912 | |
91942321 | 913 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 914 | return -EPERM; |
df6136ef | 915 | |
7735730d CY |
916 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
917 | if (err) | |
918 | return err; | |
919 | ||
7a2af766 CY |
920 | dn->data_blkaddr = datablock_addr(dn->inode, |
921 | dn->node_page, dn->ofs_in_node); | |
f847c699 | 922 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
923 | goto alloc; |
924 | ||
0abd675e CY |
925 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
926 | return err; | |
bfad7c2d | 927 | |
df6136ef | 928 | alloc: |
bfad7c2d | 929 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
930 | old_blkaddr = dn->data_blkaddr; |
931 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
d5097be5 | 932 | &sum, seg_type, NULL, false); |
6aa58d8a CY |
933 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
934 | invalidate_mapping_pages(META_MAPPING(sbi), | |
935 | old_blkaddr, old_blkaddr); | |
4d57b86d | 936 | f2fs_set_data_blkaddr(dn); |
bfad7c2d | 937 | |
0a4daae5 JK |
938 | /* |
939 | * i_size will be updated by direct_IO. Otherwise, we'll get stale | |
940 | * data from unwritten block via dio_read. | |
941 | */ | |
bfad7c2d JK |
942 | return 0; |
943 | } | |
944 | ||
a7de6086 | 945 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) |
59b802e5 | 946 | { |
b439b103 | 947 | struct inode *inode = file_inode(iocb->ki_filp); |
5b8db7fa | 948 | struct f2fs_map_blocks map; |
d6d478a1 | 949 | int flag; |
a7de6086 | 950 | int err = 0; |
d6d478a1 | 951 | bool direct_io = iocb->ki_flags & IOCB_DIRECT; |
59b802e5 | 952 | |
71ad682c | 953 | /* convert inline data for Direct I/O*/ |
d6d478a1 | 954 | if (direct_io) { |
71ad682c WG |
955 | err = f2fs_convert_inline_inode(inode); |
956 | if (err) | |
957 | return err; | |
958 | } | |
959 | ||
dc91de78 JK |
960 | if (is_inode_flag_set(inode, FI_NO_PREALLOC)) |
961 | return 0; | |
962 | ||
0080c507 | 963 | map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); |
dfd02e4d CY |
964 | map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); |
965 | if (map.m_len > map.m_lblk) | |
966 | map.m_len -= map.m_lblk; | |
967 | else | |
968 | map.m_len = 0; | |
969 | ||
da85985c | 970 | map.m_next_pgofs = NULL; |
c4020b2d | 971 | map.m_next_extent = NULL; |
d5097be5 | 972 | map.m_seg_type = NO_CHECK_TYPE; |
2a340760 | 973 | |
d6d478a1 | 974 | if (direct_io) { |
4d57b86d | 975 | map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); |
f847c699 | 976 | flag = f2fs_force_buffered_io(inode, iocb, from) ? |
d6d478a1 CY |
977 | F2FS_GET_BLOCK_PRE_AIO : |
978 | F2FS_GET_BLOCK_PRE_DIO; | |
979 | goto map_blocks; | |
d5097be5 | 980 | } |
f2470371 | 981 | if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { |
a7de6086 JK |
982 | err = f2fs_convert_inline_inode(inode); |
983 | if (err) | |
984 | return err; | |
b439b103 | 985 | } |
d6d478a1 | 986 | if (f2fs_has_inline_data(inode)) |
25006645 | 987 | return err; |
d6d478a1 CY |
988 | |
989 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
990 | ||
991 | map_blocks: | |
992 | err = f2fs_map_blocks(inode, &map, 1, flag); | |
993 | if (map.m_len > 0 && err == -ENOSPC) { | |
994 | if (!direct_io) | |
995 | set_inode_flag(inode, FI_NO_PREALLOC); | |
996 | err = 0; | |
25006645 | 997 | } |
a7de6086 | 998 | return err; |
59b802e5 JK |
999 | } |
1000 | ||
39a86958 | 1001 | void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1002 | { |
1003 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1004 | if (lock) | |
1005 | down_read(&sbi->node_change); | |
1006 | else | |
1007 | up_read(&sbi->node_change); | |
1008 | } else { | |
1009 | if (lock) | |
1010 | f2fs_lock_op(sbi); | |
1011 | else | |
1012 | f2fs_unlock_op(sbi); | |
1013 | } | |
1014 | } | |
1015 | ||
0a8165d7 | 1016 | /* |
003a3e1d JK |
1017 | * f2fs_map_blocks() now supported readahead/bmap/rw direct_IO with |
1018 | * f2fs_map_blocks structure. | |
4f4124d0 CY |
1019 | * If original data blocks are allocated, then give them to blockdev. |
1020 | * Otherwise, | |
1021 | * a. preallocate requested block addresses | |
1022 | * b. do not use extent cache for better performance | |
1023 | * c. give the block addresses to blockdev | |
eb47b800 | 1024 | */ |
d323d005 | 1025 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1026 | int create, int flag) |
eb47b800 | 1027 | { |
003a3e1d | 1028 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1029 | struct dnode_of_data dn; |
f9811703 | 1030 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
ac6f1999 | 1031 | int mode = create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1032 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1033 | int err = 0, ofs = 1; |
46008c6d CY |
1034 | unsigned int ofs_in_node, last_ofs_in_node; |
1035 | blkcnt_t prealloc; | |
e15882b6 | 1036 | struct extent_info ei = {0,0,0}; |
7df3a431 | 1037 | block_t blkaddr; |
c4020b2d | 1038 | unsigned int start_pgofs; |
eb47b800 | 1039 | |
dfd02e4d CY |
1040 | if (!maxblocks) |
1041 | return 0; | |
1042 | ||
003a3e1d JK |
1043 | map->m_len = 0; |
1044 | map->m_flags = 0; | |
1045 | ||
1046 | /* it only supports block size == page size */ | |
1047 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1048 | end = pgofs + maxblocks; |
eb47b800 | 1049 | |
24b84912 | 1050 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
003a3e1d JK |
1051 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1052 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1053 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1054 | if (map->m_next_extent) |
1055 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1056 | |
1057 | /* for hardware encryption, but to avoid potential issue in future */ | |
1058 | if (flag == F2FS_GET_BLOCK_DIO) | |
1059 | f2fs_wait_on_block_writeback_range(inode, | |
1060 | map->m_pblk, map->m_len); | |
bfad7c2d | 1061 | goto out; |
a2e7d1bf | 1062 | } |
bfad7c2d | 1063 | |
4fe71e88 | 1064 | next_dnode: |
59b802e5 | 1065 | if (create) |
59c9081b | 1066 | __do_map_lock(sbi, flag, true); |
eb47b800 JK |
1067 | |
1068 | /* When reading holes, we need its node page */ | |
1069 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1070 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1071 | if (err) { |
43473f96 CY |
1072 | if (flag == F2FS_GET_BLOCK_BMAP) |
1073 | map->m_pblk = 0; | |
da85985c | 1074 | if (err == -ENOENT) { |
bfad7c2d | 1075 | err = 0; |
da85985c CY |
1076 | if (map->m_next_pgofs) |
1077 | *map->m_next_pgofs = | |
4d57b86d | 1078 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1079 | if (map->m_next_extent) |
1080 | *map->m_next_extent = | |
4d57b86d | 1081 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1082 | } |
bfad7c2d | 1083 | goto unlock_out; |
848753aa | 1084 | } |
973163fc | 1085 | |
c4020b2d | 1086 | start_pgofs = pgofs; |
46008c6d | 1087 | prealloc = 0; |
230436b3 | 1088 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1089 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1090 | |
1091 | next_block: | |
7a2af766 | 1092 | blkaddr = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); |
4fe71e88 | 1093 | |
c9b60788 CY |
1094 | if (__is_valid_data_blkaddr(blkaddr) && |
1095 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
1096 | err = -EFAULT; | |
1097 | goto sync_out; | |
1098 | } | |
1099 | ||
f847c699 CY |
1100 | if (is_valid_data_blkaddr(sbi, blkaddr)) { |
1101 | /* use out-place-update for driect IO under LFS mode */ | |
1102 | if (test_opt(sbi, LFS) && create && | |
1103 | flag == F2FS_GET_BLOCK_DIO) { | |
1104 | err = __allocate_data_block(&dn, map->m_seg_type); | |
1105 | if (!err) | |
1106 | set_inode_flag(inode, FI_APPEND_WRITE); | |
1107 | } | |
1108 | } else { | |
973163fc | 1109 | if (create) { |
f9811703 CY |
1110 | if (unlikely(f2fs_cp_error(sbi))) { |
1111 | err = -EIO; | |
4fe71e88 | 1112 | goto sync_out; |
f9811703 | 1113 | } |
24b84912 | 1114 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1115 | if (blkaddr == NULL_ADDR) { |
1116 | prealloc++; | |
1117 | last_ofs_in_node = dn.ofs_in_node; | |
1118 | } | |
24b84912 | 1119 | } else { |
0a4daae5 JK |
1120 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1121 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1122 | err = __allocate_data_block(&dn, |
1123 | map->m_seg_type); | |
6f2d8ed6 | 1124 | if (!err) |
91942321 | 1125 | set_inode_flag(inode, FI_APPEND_WRITE); |
24b84912 | 1126 | } |
973163fc | 1127 | if (err) |
4fe71e88 | 1128 | goto sync_out; |
3f2be043 | 1129 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1130 | blkaddr = dn.data_blkaddr; |
973163fc | 1131 | } else { |
43473f96 CY |
1132 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1133 | map->m_pblk = 0; | |
1134 | goto sync_out; | |
1135 | } | |
c4020b2d CY |
1136 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1137 | goto sync_out; | |
da85985c CY |
1138 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1139 | blkaddr == NULL_ADDR) { | |
1140 | if (map->m_next_pgofs) | |
1141 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1142 | goto sync_out; |
da85985c | 1143 | } |
f3d98e74 CY |
1144 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1145 | /* for defragment case */ | |
1146 | if (map->m_next_pgofs) | |
1147 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1148 | goto sync_out; |
f3d98e74 | 1149 | } |
e2b4e2bc | 1150 | } |
e2b4e2bc | 1151 | } |
eb47b800 | 1152 | |
46008c6d CY |
1153 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1154 | goto skip; | |
1155 | ||
4fe71e88 CY |
1156 | if (map->m_len == 0) { |
1157 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1158 | if (blkaddr == NEW_ADDR) | |
1159 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1160 | map->m_flags |= F2FS_MAP_MAPPED; | |
1161 | ||
1162 | map->m_pblk = blkaddr; | |
1163 | map->m_len = 1; | |
1164 | } else if ((map->m_pblk != NEW_ADDR && | |
1165 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1166 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1167 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
4fe71e88 CY |
1168 | ofs++; |
1169 | map->m_len++; | |
1170 | } else { | |
1171 | goto sync_out; | |
1172 | } | |
bfad7c2d | 1173 | |
46008c6d | 1174 | skip: |
bfad7c2d JK |
1175 | dn.ofs_in_node++; |
1176 | pgofs++; | |
1177 | ||
46008c6d CY |
1178 | /* preallocate blocks in batch for one dnode page */ |
1179 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1180 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1181 | |
46008c6d | 1182 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1183 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1184 | if (err) |
1185 | goto sync_out; | |
bfad7c2d | 1186 | |
46008c6d CY |
1187 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1188 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1189 | err = -ENOSPC; | |
1190 | goto sync_out; | |
3104af35 | 1191 | } |
46008c6d CY |
1192 | dn.ofs_in_node = end_offset; |
1193 | } | |
1194 | ||
1195 | if (pgofs >= end) | |
1196 | goto sync_out; | |
1197 | else if (dn.ofs_in_node < end_offset) | |
1198 | goto next_block; | |
1199 | ||
c4020b2d CY |
1200 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1201 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1202 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1203 | ||
1204 | f2fs_update_extent_cache_range(&dn, | |
1205 | start_pgofs, map->m_pblk + ofs, | |
1206 | map->m_len - ofs); | |
1207 | } | |
1208 | } | |
1209 | ||
46008c6d CY |
1210 | f2fs_put_dnode(&dn); |
1211 | ||
1212 | if (create) { | |
59c9081b | 1213 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1214 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1215 | } |
46008c6d | 1216 | goto next_dnode; |
7df3a431 | 1217 | |
bfad7c2d | 1218 | sync_out: |
1e78e8bd ST |
1219 | |
1220 | /* for hardware encryption, but to avoid potential issue in future */ | |
1221 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) | |
1222 | f2fs_wait_on_block_writeback_range(inode, | |
1223 | map->m_pblk, map->m_len); | |
1224 | ||
c4020b2d CY |
1225 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1226 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1227 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1228 | ||
1229 | f2fs_update_extent_cache_range(&dn, | |
1230 | start_pgofs, map->m_pblk + ofs, | |
1231 | map->m_len - ofs); | |
1232 | } | |
1233 | if (map->m_next_extent) | |
1234 | *map->m_next_extent = pgofs + 1; | |
1235 | } | |
eb47b800 | 1236 | f2fs_put_dnode(&dn); |
bfad7c2d | 1237 | unlock_out: |
2a340760 | 1238 | if (create) { |
59c9081b | 1239 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1240 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1241 | } |
bfad7c2d | 1242 | out: |
003a3e1d | 1243 | trace_f2fs_map_blocks(inode, map, err); |
bfad7c2d | 1244 | return err; |
eb47b800 JK |
1245 | } |
1246 | ||
b91050a8 HL |
1247 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1248 | { | |
1249 | struct f2fs_map_blocks map; | |
1250 | block_t last_lblk; | |
1251 | int err; | |
1252 | ||
1253 | if (pos + len > i_size_read(inode)) | |
1254 | return false; | |
1255 | ||
1256 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1257 | map.m_next_pgofs = NULL; | |
1258 | map.m_next_extent = NULL; | |
1259 | map.m_seg_type = NO_CHECK_TYPE; | |
1260 | last_lblk = F2FS_BLK_ALIGN(pos + len); | |
1261 | ||
1262 | while (map.m_lblk < last_lblk) { | |
1263 | map.m_len = last_lblk - map.m_lblk; | |
1264 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1265 | if (err || map.m_len == 0) | |
1266 | return false; | |
1267 | map.m_lblk += map.m_len; | |
1268 | } | |
1269 | return true; | |
1270 | } | |
1271 | ||
003a3e1d | 1272 | static int __get_data_block(struct inode *inode, sector_t iblock, |
da85985c | 1273 | struct buffer_head *bh, int create, int flag, |
d5097be5 | 1274 | pgoff_t *next_pgofs, int seg_type) |
003a3e1d JK |
1275 | { |
1276 | struct f2fs_map_blocks map; | |
a7de6086 | 1277 | int err; |
003a3e1d JK |
1278 | |
1279 | map.m_lblk = iblock; | |
1280 | map.m_len = bh->b_size >> inode->i_blkbits; | |
da85985c | 1281 | map.m_next_pgofs = next_pgofs; |
c4020b2d | 1282 | map.m_next_extent = NULL; |
d5097be5 | 1283 | map.m_seg_type = seg_type; |
003a3e1d | 1284 | |
a7de6086 JK |
1285 | err = f2fs_map_blocks(inode, &map, create, flag); |
1286 | if (!err) { | |
003a3e1d JK |
1287 | map_bh(bh, inode->i_sb, map.m_pblk); |
1288 | bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; | |
b86e3307 | 1289 | bh->b_size = (u64)map.m_len << inode->i_blkbits; |
003a3e1d | 1290 | } |
a7de6086 | 1291 | return err; |
003a3e1d JK |
1292 | } |
1293 | ||
ccfb3000 | 1294 | static int get_data_block(struct inode *inode, sector_t iblock, |
da85985c CY |
1295 | struct buffer_head *bh_result, int create, int flag, |
1296 | pgoff_t *next_pgofs) | |
e2b4e2bc | 1297 | { |
da85985c | 1298 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 HL |
1299 | flag, next_pgofs, |
1300 | NO_CHECK_TYPE); | |
e2b4e2bc CY |
1301 | } |
1302 | ||
1303 | static int get_data_block_dio(struct inode *inode, sector_t iblock, | |
ccfb3000 JK |
1304 | struct buffer_head *bh_result, int create) |
1305 | { | |
e2b4e2bc | 1306 | return __get_data_block(inode, iblock, bh_result, create, |
0a4daae5 | 1307 | F2FS_GET_BLOCK_DIO, NULL, |
4d57b86d | 1308 | f2fs_rw_hint_to_seg_type( |
d5097be5 | 1309 | inode->i_write_hint)); |
ccfb3000 JK |
1310 | } |
1311 | ||
e2b4e2bc | 1312 | static int get_data_block_bmap(struct inode *inode, sector_t iblock, |
ccfb3000 JK |
1313 | struct buffer_head *bh_result, int create) |
1314 | { | |
179448bf | 1315 | /* Block number less than F2FS MAX BLOCKS */ |
e0afc4d6 | 1316 | if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks)) |
179448bf YH |
1317 | return -EFBIG; |
1318 | ||
e2b4e2bc | 1319 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 HL |
1320 | F2FS_GET_BLOCK_BMAP, NULL, |
1321 | NO_CHECK_TYPE); | |
ccfb3000 JK |
1322 | } |
1323 | ||
7f63eb77 JK |
1324 | static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) |
1325 | { | |
1326 | return (offset >> inode->i_blkbits); | |
1327 | } | |
1328 | ||
1329 | static inline loff_t blk_to_logical(struct inode *inode, sector_t blk) | |
1330 | { | |
1331 | return (blk << inode->i_blkbits); | |
1332 | } | |
1333 | ||
442a9dbd CY |
1334 | static int f2fs_xattr_fiemap(struct inode *inode, |
1335 | struct fiemap_extent_info *fieinfo) | |
1336 | { | |
1337 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1338 | struct page *page; | |
1339 | struct node_info ni; | |
1340 | __u64 phys = 0, len; | |
1341 | __u32 flags; | |
1342 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1343 | int err = 0; | |
1344 | ||
1345 | if (f2fs_has_inline_xattr(inode)) { | |
1346 | int offset; | |
1347 | ||
1348 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1349 | inode->i_ino, false); | |
1350 | if (!page) | |
1351 | return -ENOMEM; | |
1352 | ||
7735730d CY |
1353 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1354 | if (err) { | |
1355 | f2fs_put_page(page, 1); | |
1356 | return err; | |
1357 | } | |
442a9dbd CY |
1358 | |
1359 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1360 | offset = offsetof(struct f2fs_inode, i_addr) + | |
1361 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1362 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1363 | |
1364 | phys += offset; | |
1365 | len = inline_xattr_size(inode); | |
1366 | ||
1367 | f2fs_put_page(page, 1); | |
1368 | ||
1369 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1370 | ||
1371 | if (!xnid) | |
1372 | flags |= FIEMAP_EXTENT_LAST; | |
1373 | ||
1374 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1375 | if (err || err == 1) | |
1376 | return err; | |
1377 | } | |
1378 | ||
1379 | if (xnid) { | |
1380 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1381 | if (!page) | |
1382 | return -ENOMEM; | |
1383 | ||
7735730d CY |
1384 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1385 | if (err) { | |
1386 | f2fs_put_page(page, 1); | |
1387 | return err; | |
1388 | } | |
442a9dbd CY |
1389 | |
1390 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1391 | len = inode->i_sb->s_blocksize; | |
1392 | ||
1393 | f2fs_put_page(page, 1); | |
1394 | ||
1395 | flags = FIEMAP_EXTENT_LAST; | |
1396 | } | |
1397 | ||
1398 | if (phys) | |
1399 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1400 | ||
1401 | return (err < 0 ? err : 0); | |
1402 | } | |
1403 | ||
9ab70134 JK |
1404 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1405 | u64 start, u64 len) | |
1406 | { | |
7f63eb77 JK |
1407 | struct buffer_head map_bh; |
1408 | sector_t start_blk, last_blk; | |
da85985c | 1409 | pgoff_t next_pgofs; |
7f63eb77 JK |
1410 | u64 logical = 0, phys = 0, size = 0; |
1411 | u32 flags = 0; | |
7f63eb77 JK |
1412 | int ret = 0; |
1413 | ||
c4020b2d CY |
1414 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1415 | ret = f2fs_precache_extents(inode); | |
1416 | if (ret) | |
1417 | return ret; | |
1418 | } | |
1419 | ||
442a9dbd | 1420 | ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1421 | if (ret) |
1422 | return ret; | |
1423 | ||
f1b43d4c CY |
1424 | inode_lock(inode); |
1425 | ||
442a9dbd CY |
1426 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1427 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1428 | goto out; | |
1429 | } | |
1430 | ||
67f8cf3c JK |
1431 | if (f2fs_has_inline_data(inode)) { |
1432 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); | |
1433 | if (ret != -EAGAIN) | |
f1b43d4c | 1434 | goto out; |
67f8cf3c JK |
1435 | } |
1436 | ||
7f63eb77 JK |
1437 | if (logical_to_blk(inode, len) == 0) |
1438 | len = blk_to_logical(inode, 1); | |
1439 | ||
1440 | start_blk = logical_to_blk(inode, start); | |
1441 | last_blk = logical_to_blk(inode, start + len - 1); | |
9a950d52 | 1442 | |
7f63eb77 JK |
1443 | next: |
1444 | memset(&map_bh, 0, sizeof(struct buffer_head)); | |
1445 | map_bh.b_size = len; | |
1446 | ||
e2b4e2bc | 1447 | ret = get_data_block(inode, start_blk, &map_bh, 0, |
da85985c | 1448 | F2FS_GET_BLOCK_FIEMAP, &next_pgofs); |
7f63eb77 JK |
1449 | if (ret) |
1450 | goto out; | |
1451 | ||
1452 | /* HOLE */ | |
1453 | if (!buffer_mapped(&map_bh)) { | |
da85985c | 1454 | start_blk = next_pgofs; |
58736fa6 CY |
1455 | |
1456 | if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, | |
1457 | F2FS_I_SB(inode)->max_file_blocks)) | |
9a950d52 | 1458 | goto prep_next; |
58736fa6 | 1459 | |
9a950d52 FL |
1460 | flags |= FIEMAP_EXTENT_LAST; |
1461 | } | |
7f63eb77 | 1462 | |
da5af127 CY |
1463 | if (size) { |
1464 | if (f2fs_encrypted_inode(inode)) | |
1465 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; | |
1466 | ||
9a950d52 FL |
1467 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1468 | phys, size, flags); | |
da5af127 | 1469 | } |
7f63eb77 | 1470 | |
9a950d52 FL |
1471 | if (start_blk > last_blk || ret) |
1472 | goto out; | |
7f63eb77 | 1473 | |
9a950d52 FL |
1474 | logical = blk_to_logical(inode, start_blk); |
1475 | phys = blk_to_logical(inode, map_bh.b_blocknr); | |
1476 | size = map_bh.b_size; | |
1477 | flags = 0; | |
1478 | if (buffer_unwritten(&map_bh)) | |
1479 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
7f63eb77 | 1480 | |
9a950d52 | 1481 | start_blk += logical_to_blk(inode, size); |
7f63eb77 | 1482 | |
9a950d52 | 1483 | prep_next: |
7f63eb77 JK |
1484 | cond_resched(); |
1485 | if (fatal_signal_pending(current)) | |
1486 | ret = -EINTR; | |
1487 | else | |
1488 | goto next; | |
1489 | out: | |
1490 | if (ret == 1) | |
1491 | ret = 0; | |
1492 | ||
5955102c | 1493 | inode_unlock(inode); |
7f63eb77 | 1494 | return ret; |
9ab70134 JK |
1495 | } |
1496 | ||
f1e88660 JK |
1497 | /* |
1498 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
1499 | * Major change was from block_size == page_size in f2fs by default. | |
e2e59414 JK |
1500 | * |
1501 | * Note that the aops->readpages() function is ONLY used for read-ahead. If | |
1502 | * this function ever deviates from doing just read-ahead, it should either | |
1503 | * use ->readpage() or do the necessary surgery to decouple ->readpages() | |
1504 | * from read-ahead. | |
f1e88660 JK |
1505 | */ |
1506 | static int f2fs_mpage_readpages(struct address_space *mapping, | |
1507 | struct list_head *pages, struct page *page, | |
e2e59414 | 1508 | unsigned nr_pages, bool is_readahead) |
f1e88660 JK |
1509 | { |
1510 | struct bio *bio = NULL; | |
f1e88660 JK |
1511 | sector_t last_block_in_bio = 0; |
1512 | struct inode *inode = mapping->host; | |
1513 | const unsigned blkbits = inode->i_blkbits; | |
1514 | const unsigned blocksize = 1 << blkbits; | |
1515 | sector_t block_in_file; | |
1516 | sector_t last_block; | |
1517 | sector_t last_block_in_file; | |
1518 | sector_t block_nr; | |
f1e88660 JK |
1519 | struct f2fs_map_blocks map; |
1520 | ||
1521 | map.m_pblk = 0; | |
1522 | map.m_lblk = 0; | |
1523 | map.m_len = 0; | |
1524 | map.m_flags = 0; | |
da85985c | 1525 | map.m_next_pgofs = NULL; |
c4020b2d | 1526 | map.m_next_extent = NULL; |
d5097be5 | 1527 | map.m_seg_type = NO_CHECK_TYPE; |
f1e88660 | 1528 | |
736c0a74 | 1529 | for (; nr_pages; nr_pages--) { |
f1e88660 | 1530 | if (pages) { |
939afa94 | 1531 | page = list_last_entry(pages, struct page, lru); |
a83d50bc KM |
1532 | |
1533 | prefetchw(&page->flags); | |
f1e88660 JK |
1534 | list_del(&page->lru); |
1535 | if (add_to_page_cache_lru(page, mapping, | |
8a5c743e MH |
1536 | page->index, |
1537 | readahead_gfp_mask(mapping))) | |
f1e88660 JK |
1538 | goto next_page; |
1539 | } | |
1540 | ||
1541 | block_in_file = (sector_t)page->index; | |
1542 | last_block = block_in_file + nr_pages; | |
1543 | last_block_in_file = (i_size_read(inode) + blocksize - 1) >> | |
1544 | blkbits; | |
1545 | if (last_block > last_block_in_file) | |
1546 | last_block = last_block_in_file; | |
1547 | ||
1548 | /* | |
1549 | * Map blocks using the previous result first. | |
1550 | */ | |
1551 | if ((map.m_flags & F2FS_MAP_MAPPED) && | |
1552 | block_in_file > map.m_lblk && | |
1553 | block_in_file < (map.m_lblk + map.m_len)) | |
1554 | goto got_it; | |
1555 | ||
1556 | /* | |
1557 | * Then do more f2fs_map_blocks() calls until we are | |
1558 | * done with this page. | |
1559 | */ | |
1560 | map.m_flags = 0; | |
1561 | ||
1562 | if (block_in_file < last_block) { | |
1563 | map.m_lblk = block_in_file; | |
1564 | map.m_len = last_block - block_in_file; | |
1565 | ||
46c9e141 | 1566 | if (f2fs_map_blocks(inode, &map, 0, |
f2220c7f | 1567 | F2FS_GET_BLOCK_DEFAULT)) |
f1e88660 JK |
1568 | goto set_error_page; |
1569 | } | |
1570 | got_it: | |
1571 | if ((map.m_flags & F2FS_MAP_MAPPED)) { | |
1572 | block_nr = map.m_pblk + block_in_file - map.m_lblk; | |
1573 | SetPageMappedToDisk(page); | |
1574 | ||
1575 | if (!PageUptodate(page) && !cleancache_get_page(page)) { | |
1576 | SetPageUptodate(page); | |
1577 | goto confused; | |
1578 | } | |
c9b60788 CY |
1579 | |
1580 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
1581 | DATA_GENERIC)) | |
1582 | goto set_error_page; | |
f1e88660 | 1583 | } else { |
09cbfeaf | 1584 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1585 | if (!PageUptodate(page)) |
1586 | SetPageUptodate(page); | |
f1e88660 JK |
1587 | unlock_page(page); |
1588 | goto next_page; | |
1589 | } | |
1590 | ||
1591 | /* | |
1592 | * This page will go to BIO. Do we need to send this | |
1593 | * BIO off first? | |
1594 | */ | |
3c62be17 JK |
1595 | if (bio && (last_block_in_bio != block_nr - 1 || |
1596 | !__same_bdev(F2FS_I_SB(inode), block_nr, bio))) { | |
f1e88660 | 1597 | submit_and_realloc: |
4fc29c1a | 1598 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1599 | bio = NULL; |
1600 | } | |
1601 | if (bio == NULL) { | |
e2e59414 JK |
1602 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, |
1603 | is_readahead ? REQ_RAHEAD : 0); | |
1d353eb7 JK |
1604 | if (IS_ERR(bio)) { |
1605 | bio = NULL; | |
f1e88660 | 1606 | goto set_error_page; |
4375a336 | 1607 | } |
f1e88660 JK |
1608 | } |
1609 | ||
0ded69f6 JK |
1610 | /* |
1611 | * If the page is under writeback, we need to wait for | |
1612 | * its completion to see the correct decrypted data. | |
1613 | */ | |
1614 | f2fs_wait_on_block_writeback(inode, block_nr); | |
1615 | ||
f1e88660 JK |
1616 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
1617 | goto submit_and_realloc; | |
1618 | ||
5f9abab4 | 1619 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); |
fb7d70db | 1620 | ClearPageError(page); |
f1e88660 JK |
1621 | last_block_in_bio = block_nr; |
1622 | goto next_page; | |
1623 | set_error_page: | |
1624 | SetPageError(page); | |
09cbfeaf | 1625 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 JK |
1626 | unlock_page(page); |
1627 | goto next_page; | |
1628 | confused: | |
1629 | if (bio) { | |
4fc29c1a | 1630 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1631 | bio = NULL; |
1632 | } | |
1633 | unlock_page(page); | |
1634 | next_page: | |
1635 | if (pages) | |
09cbfeaf | 1636 | put_page(page); |
f1e88660 JK |
1637 | } |
1638 | BUG_ON(pages && !list_empty(pages)); | |
1639 | if (bio) | |
4fc29c1a | 1640 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1641 | return 0; |
1642 | } | |
1643 | ||
eb47b800 JK |
1644 | static int f2fs_read_data_page(struct file *file, struct page *page) |
1645 | { | |
9ffe0fb5 | 1646 | struct inode *inode = page->mapping->host; |
b3d208f9 | 1647 | int ret = -EAGAIN; |
9ffe0fb5 | 1648 | |
c20e89cd CY |
1649 | trace_f2fs_readpage(page, DATA); |
1650 | ||
e1c42045 | 1651 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
1652 | if (f2fs_has_inline_data(inode)) |
1653 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 1654 | if (ret == -EAGAIN) |
e2e59414 | 1655 | ret = f2fs_mpage_readpages(page->mapping, NULL, page, 1, false); |
9ffe0fb5 | 1656 | return ret; |
eb47b800 JK |
1657 | } |
1658 | ||
1659 | static int f2fs_read_data_pages(struct file *file, | |
1660 | struct address_space *mapping, | |
1661 | struct list_head *pages, unsigned nr_pages) | |
1662 | { | |
71cb4aff | 1663 | struct inode *inode = mapping->host; |
939afa94 | 1664 | struct page *page = list_last_entry(pages, struct page, lru); |
b8c29400 CY |
1665 | |
1666 | trace_f2fs_readpages(inode, page, nr_pages); | |
9ffe0fb5 HL |
1667 | |
1668 | /* If the file has inline data, skip readpages */ | |
1669 | if (f2fs_has_inline_data(inode)) | |
1670 | return 0; | |
1671 | ||
e2e59414 | 1672 | return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true); |
eb47b800 JK |
1673 | } |
1674 | ||
7eab0c0d HP |
1675 | static int encrypt_one_page(struct f2fs_io_info *fio) |
1676 | { | |
1677 | struct inode *inode = fio->page->mapping->host; | |
6aa58d8a | 1678 | struct page *mpage; |
7eab0c0d HP |
1679 | gfp_t gfp_flags = GFP_NOFS; |
1680 | ||
1958593e | 1681 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
1682 | return 0; |
1683 | ||
6dbb1796 | 1684 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 1685 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d HP |
1686 | |
1687 | retry_encrypt: | |
1688 | fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page, | |
1689 | PAGE_SIZE, 0, fio->page->index, gfp_flags); | |
6aa58d8a CY |
1690 | if (IS_ERR(fio->encrypted_page)) { |
1691 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
1692 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
1693 | f2fs_flush_merged_writes(fio->sbi); | |
1694 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
1695 | gfp_flags |= __GFP_NOFAIL; | |
1696 | goto retry_encrypt; | |
1697 | } | |
1698 | return PTR_ERR(fio->encrypted_page); | |
1699 | } | |
7eab0c0d | 1700 | |
6aa58d8a CY |
1701 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
1702 | if (mpage) { | |
1703 | if (PageUptodate(mpage)) | |
1704 | memcpy(page_address(mpage), | |
1705 | page_address(fio->encrypted_page), PAGE_SIZE); | |
1706 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 1707 | } |
6aa58d8a | 1708 | return 0; |
7eab0c0d HP |
1709 | } |
1710 | ||
bb9e3bb8 CY |
1711 | static inline bool check_inplace_update_policy(struct inode *inode, |
1712 | struct f2fs_io_info *fio) | |
7eab0c0d | 1713 | { |
bb9e3bb8 CY |
1714 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1715 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 1716 | |
bb9e3bb8 CY |
1717 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
1718 | return true; | |
4d57b86d | 1719 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
1720 | return true; |
1721 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
1722 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
1723 | return true; | |
4d57b86d | 1724 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
1725 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
1726 | return true; | |
1727 | ||
1728 | /* | |
1729 | * IPU for rewrite async pages | |
1730 | */ | |
1731 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
1732 | fio && fio->op == REQ_OP_WRITE && | |
1733 | !(fio->op_flags & REQ_SYNC) && | |
1734 | !f2fs_encrypted_inode(inode)) | |
1735 | return true; | |
1736 | ||
1737 | /* this is only set during fdatasync */ | |
1738 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
1739 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
1740 | return true; | |
1741 | ||
4354994f DR |
1742 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1743 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1744 | return true; | |
1745 | ||
bb9e3bb8 CY |
1746 | return false; |
1747 | } | |
1748 | ||
4d57b86d | 1749 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 1750 | { |
1ad71a27 JK |
1751 | if (f2fs_is_pinned_file(inode)) |
1752 | return true; | |
bb9e3bb8 CY |
1753 | |
1754 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
1755 | if (file_is_cold(inode)) | |
1756 | return true; | |
1757 | ||
1758 | return check_inplace_update_policy(inode, fio); | |
1759 | } | |
1760 | ||
4d57b86d | 1761 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
1762 | { |
1763 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1764 | ||
1765 | if (test_opt(sbi, LFS)) | |
1766 | return true; | |
1767 | if (S_ISDIR(inode->i_mode)) | |
1768 | return true; | |
af033b2a CY |
1769 | if (IS_NOQUOTA(inode)) |
1770 | return true; | |
bb9e3bb8 CY |
1771 | if (f2fs_is_atomic_file(inode)) |
1772 | return true; | |
1773 | if (fio) { | |
1774 | if (is_cold_data(fio->page)) | |
1775 | return true; | |
1776 | if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) | |
1777 | return true; | |
4354994f DR |
1778 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1779 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1780 | return true; | |
bb9e3bb8 CY |
1781 | } |
1782 | return false; | |
1783 | } | |
1784 | ||
7eab0c0d HP |
1785 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
1786 | { | |
1787 | struct inode *inode = fio->page->mapping->host; | |
1788 | ||
4d57b86d | 1789 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
1790 | return false; |
1791 | ||
4d57b86d | 1792 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
1793 | } |
1794 | ||
4d57b86d | 1795 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 1796 | { |
05ca3632 | 1797 | struct page *page = fio->page; |
eb47b800 | 1798 | struct inode *inode = page->mapping->host; |
eb47b800 | 1799 | struct dnode_of_data dn; |
e959c8f5 | 1800 | struct extent_info ei = {0,0,0}; |
7735730d | 1801 | struct node_info ni; |
e959c8f5 | 1802 | bool ipu_force = false; |
eb47b800 JK |
1803 | int err = 0; |
1804 | ||
1805 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
1806 | if (need_inplace_update(fio) && |
1807 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
1808 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 1809 | |
c9b60788 CY |
1810 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
1811 | DATA_GENERIC)) | |
1812 | return -EFAULT; | |
1813 | ||
1814 | ipu_force = true; | |
1815 | fio->need_lock = LOCK_DONE; | |
1816 | goto got_it; | |
e959c8f5 | 1817 | } |
279d6df2 | 1818 | |
d29460e5 JK |
1819 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
1820 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
1821 | return -EAGAIN; | |
279d6df2 | 1822 | |
4d57b86d | 1823 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 1824 | if (err) |
279d6df2 | 1825 | goto out; |
eb47b800 | 1826 | |
28bc106b | 1827 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
1828 | |
1829 | /* This page is already truncated */ | |
7a9d7548 | 1830 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 1831 | ClearPageUptodate(page); |
2baf0781 | 1832 | clear_cold_data(page); |
eb47b800 | 1833 | goto out_writepage; |
2bca1e23 | 1834 | } |
e959c8f5 | 1835 | got_it: |
c9b60788 CY |
1836 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
1837 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
1838 | DATA_GENERIC)) { | |
1839 | err = -EFAULT; | |
1840 | goto out_writepage; | |
1841 | } | |
eb47b800 JK |
1842 | /* |
1843 | * If current allocation needs SSR, | |
1844 | * it had better in-place writes for updated data. | |
1845 | */ | |
e1da7872 | 1846 | if (ipu_force || (is_valid_data_blkaddr(fio->sbi, fio->old_blkaddr) && |
7b525dd0 | 1847 | need_inplace_update(fio))) { |
cc15620b JK |
1848 | err = encrypt_one_page(fio); |
1849 | if (err) | |
1850 | goto out_writepage; | |
1851 | ||
1852 | set_page_writeback(page); | |
17c50035 | 1853 | ClearPageError(page); |
279d6df2 | 1854 | f2fs_put_dnode(&dn); |
cc15620b | 1855 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 1856 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 1857 | err = f2fs_inplace_write_data(fio); |
7eab0c0d | 1858 | trace_f2fs_do_write_data_page(fio->page, IPU); |
91942321 | 1859 | set_inode_flag(inode, FI_UPDATE_WRITE); |
279d6df2 | 1860 | return err; |
eb47b800 | 1861 | } |
279d6df2 | 1862 | |
cc15620b JK |
1863 | if (fio->need_lock == LOCK_RETRY) { |
1864 | if (!f2fs_trylock_op(fio->sbi)) { | |
1865 | err = -EAGAIN; | |
1866 | goto out_writepage; | |
1867 | } | |
1868 | fio->need_lock = LOCK_REQ; | |
1869 | } | |
1870 | ||
7735730d CY |
1871 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
1872 | if (err) | |
1873 | goto out_writepage; | |
1874 | ||
1875 | fio->version = ni.version; | |
1876 | ||
cc15620b JK |
1877 | err = encrypt_one_page(fio); |
1878 | if (err) | |
1879 | goto out_writepage; | |
1880 | ||
1881 | set_page_writeback(page); | |
17c50035 | 1882 | ClearPageError(page); |
cc15620b | 1883 | |
279d6df2 | 1884 | /* LFS mode write path */ |
4d57b86d | 1885 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
1886 | trace_f2fs_do_write_data_page(page, OPU); |
1887 | set_inode_flag(inode, FI_APPEND_WRITE); | |
1888 | if (page->index == 0) | |
1889 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
1890 | out_writepage: |
1891 | f2fs_put_dnode(&dn); | |
279d6df2 | 1892 | out: |
cc15620b | 1893 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 1894 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
1895 | return err; |
1896 | } | |
1897 | ||
d68f735b | 1898 | static int __write_data_page(struct page *page, bool *submitted, |
b0af6d49 CY |
1899 | struct writeback_control *wbc, |
1900 | enum iostat_type io_type) | |
eb47b800 JK |
1901 | { |
1902 | struct inode *inode = page->mapping->host; | |
4081363f | 1903 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 JK |
1904 | loff_t i_size = i_size_read(inode); |
1905 | const pgoff_t end_index = ((unsigned long long) i_size) | |
09cbfeaf | 1906 | >> PAGE_SHIFT; |
26de9b11 | 1907 | loff_t psize = (page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 1908 | unsigned offset = 0; |
39936837 | 1909 | bool need_balance_fs = false; |
eb47b800 | 1910 | int err = 0; |
458e6197 | 1911 | struct f2fs_io_info fio = { |
05ca3632 | 1912 | .sbi = sbi, |
39d787be | 1913 | .ino = inode->i_ino, |
458e6197 | 1914 | .type = DATA, |
04d328de | 1915 | .op = REQ_OP_WRITE, |
7637241e | 1916 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 1917 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 1918 | .page = page, |
4375a336 | 1919 | .encrypted_page = NULL, |
d68f735b | 1920 | .submitted = false, |
cc15620b | 1921 | .need_lock = LOCK_RETRY, |
b0af6d49 | 1922 | .io_type = io_type, |
578c6478 | 1923 | .io_wbc = wbc, |
458e6197 | 1924 | }; |
eb47b800 | 1925 | |
ecda0de3 CY |
1926 | trace_f2fs_writepage(page, DATA); |
1927 | ||
db198ae0 CY |
1928 | /* we should bypass data pages to proceed the kworkder jobs */ |
1929 | if (unlikely(f2fs_cp_error(sbi))) { | |
1930 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
1931 | /* |
1932 | * don't drop any dirty dentry pages for keeping lastest | |
1933 | * directory structure. | |
1934 | */ | |
1935 | if (S_ISDIR(inode->i_mode)) | |
1936 | goto redirty_out; | |
db198ae0 CY |
1937 | goto out; |
1938 | } | |
1939 | ||
0771fcc7 CY |
1940 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
1941 | goto redirty_out; | |
1942 | ||
eb47b800 | 1943 | if (page->index < end_index) |
39936837 | 1944 | goto write; |
eb47b800 JK |
1945 | |
1946 | /* | |
1947 | * If the offset is out-of-range of file size, | |
1948 | * this page does not have to be written to disk. | |
1949 | */ | |
09cbfeaf | 1950 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 1951 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 1952 | goto out; |
eb47b800 | 1953 | |
09cbfeaf | 1954 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 1955 | write: |
1e84371f JK |
1956 | if (f2fs_is_drop_cache(inode)) |
1957 | goto out; | |
e6e5f561 JK |
1958 | /* we should not write 0'th page having journal header */ |
1959 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
1960 | (!wbc->for_reclaim && | |
4d57b86d | 1961 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 1962 | goto redirty_out; |
eb47b800 | 1963 | |
39936837 | 1964 | /* Dentry blocks are controlled by checkpoint */ |
eb47b800 | 1965 | if (S_ISDIR(inode->i_mode)) { |
cc15620b | 1966 | fio.need_lock = LOCK_DONE; |
4d57b86d | 1967 | err = f2fs_do_write_data_page(&fio); |
8618b881 JK |
1968 | goto done; |
1969 | } | |
9ffe0fb5 | 1970 | |
8618b881 | 1971 | if (!wbc->for_reclaim) |
39936837 | 1972 | need_balance_fs = true; |
7f3037a5 | 1973 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 1974 | goto redirty_out; |
ef095d19 JK |
1975 | else |
1976 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 1977 | |
b3d208f9 | 1978 | err = -EAGAIN; |
dd7b2333 | 1979 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 1980 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
1981 | if (!err) |
1982 | goto out; | |
1983 | } | |
279d6df2 | 1984 | |
cc15620b | 1985 | if (err == -EAGAIN) { |
4d57b86d | 1986 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
1987 | if (err == -EAGAIN) { |
1988 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 1989 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
1990 | } |
1991 | } | |
a0d00fad | 1992 | |
eb449797 CY |
1993 | if (err) { |
1994 | file_set_keep_isize(inode); | |
1995 | } else { | |
1996 | down_write(&F2FS_I(inode)->i_sem); | |
1997 | if (F2FS_I(inode)->last_disk_size < psize) | |
1998 | F2FS_I(inode)->last_disk_size = psize; | |
1999 | up_write(&F2FS_I(inode)->i_sem); | |
2000 | } | |
279d6df2 | 2001 | |
8618b881 JK |
2002 | done: |
2003 | if (err && err != -ENOENT) | |
2004 | goto redirty_out; | |
eb47b800 | 2005 | |
39936837 | 2006 | out: |
a7ffdbe2 | 2007 | inode_dec_dirty_pages(inode); |
2baf0781 | 2008 | if (err) { |
2bca1e23 | 2009 | ClearPageUptodate(page); |
2baf0781 CY |
2010 | clear_cold_data(page); |
2011 | } | |
0c3a5797 CY |
2012 | |
2013 | if (wbc->for_reclaim) { | |
bab475c5 | 2014 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2015 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2016 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2017 | submitted = NULL; |
0c3a5797 CY |
2018 | } |
2019 | ||
eb47b800 | 2020 | unlock_page(page); |
af033b2a | 2021 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode)) |
a7881893 | 2022 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2023 | |
d68f735b | 2024 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2025 | f2fs_submit_merged_write(sbi, DATA); |
d68f735b JK |
2026 | submitted = NULL; |
2027 | } | |
2028 | ||
2029 | if (submitted) | |
2030 | *submitted = fio.submitted; | |
0c3a5797 | 2031 | |
eb47b800 JK |
2032 | return 0; |
2033 | ||
eb47b800 | 2034 | redirty_out: |
76f60268 | 2035 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2036 | /* |
2037 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2038 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2039 | * file_write_and_wait_range() will see EIO error, which is critical | |
2040 | * to return value of fsync() followed by atomic_write failure to user. | |
2041 | */ | |
2042 | if (!err || wbc->for_reclaim) | |
0002b61b | 2043 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2044 | unlock_page(page); |
2045 | return err; | |
fa9150a8 NJ |
2046 | } |
2047 | ||
f566bae8 JK |
2048 | static int f2fs_write_data_page(struct page *page, |
2049 | struct writeback_control *wbc) | |
2050 | { | |
b0af6d49 | 2051 | return __write_data_page(page, NULL, wbc, FS_DATA_IO); |
f566bae8 JK |
2052 | } |
2053 | ||
8f46dcae CY |
2054 | /* |
2055 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2056 | * The major change is making write step of cold data page separately from | |
2057 | * warm/hot data page. | |
2058 | */ | |
2059 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2060 | struct writeback_control *wbc, |
2061 | enum iostat_type io_type) | |
8f46dcae CY |
2062 | { |
2063 | int ret = 0; | |
2064 | int done = 0; | |
2065 | struct pagevec pvec; | |
c29fd0c0 | 2066 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8f46dcae CY |
2067 | int nr_pages; |
2068 | pgoff_t uninitialized_var(writeback_index); | |
2069 | pgoff_t index; | |
2070 | pgoff_t end; /* Inclusive */ | |
2071 | pgoff_t done_index; | |
2072 | int cycled; | |
2073 | int range_whole = 0; | |
10bbd235 | 2074 | xa_mark_t tag; |
bab475c5 | 2075 | int nwritten = 0; |
8f46dcae | 2076 | |
86679820 | 2077 | pagevec_init(&pvec); |
46ae957f | 2078 | |
ef095d19 JK |
2079 | if (get_dirty_pages(mapping->host) <= |
2080 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2081 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2082 | else | |
2083 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2084 | ||
8f46dcae CY |
2085 | if (wbc->range_cyclic) { |
2086 | writeback_index = mapping->writeback_index; /* prev offset */ | |
2087 | index = writeback_index; | |
2088 | if (index == 0) | |
2089 | cycled = 1; | |
2090 | else | |
2091 | cycled = 0; | |
2092 | end = -1; | |
2093 | } else { | |
09cbfeaf KS |
2094 | index = wbc->range_start >> PAGE_SHIFT; |
2095 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2096 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2097 | range_whole = 1; | |
2098 | cycled = 1; /* ignore range_cyclic tests */ | |
2099 | } | |
2100 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2101 | tag = PAGECACHE_TAG_TOWRITE; | |
2102 | else | |
2103 | tag = PAGECACHE_TAG_DIRTY; | |
2104 | retry: | |
2105 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2106 | tag_pages_for_writeback(mapping, index, end); | |
2107 | done_index = index; | |
2108 | while (!done && (index <= end)) { | |
2109 | int i; | |
2110 | ||
69c4f35d | 2111 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2112 | tag); |
8f46dcae CY |
2113 | if (nr_pages == 0) |
2114 | break; | |
2115 | ||
2116 | for (i = 0; i < nr_pages; i++) { | |
2117 | struct page *page = pvec.pages[i]; | |
d68f735b | 2118 | bool submitted = false; |
8f46dcae | 2119 | |
f8de4331 | 2120 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2121 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2122 | wbc->sync_mode == WB_SYNC_NONE) { |
2123 | done = 1; | |
2124 | break; | |
2125 | } | |
2126 | ||
8f46dcae | 2127 | done_index = page->index; |
d29460e5 | 2128 | retry_write: |
8f46dcae CY |
2129 | lock_page(page); |
2130 | ||
2131 | if (unlikely(page->mapping != mapping)) { | |
2132 | continue_unlock: | |
2133 | unlock_page(page); | |
2134 | continue; | |
2135 | } | |
2136 | ||
2137 | if (!PageDirty(page)) { | |
2138 | /* someone wrote it for us */ | |
2139 | goto continue_unlock; | |
2140 | } | |
2141 | ||
8f46dcae CY |
2142 | if (PageWriteback(page)) { |
2143 | if (wbc->sync_mode != WB_SYNC_NONE) | |
fec1d657 JK |
2144 | f2fs_wait_on_page_writeback(page, |
2145 | DATA, true); | |
8f46dcae CY |
2146 | else |
2147 | goto continue_unlock; | |
2148 | } | |
2149 | ||
2150 | BUG_ON(PageWriteback(page)); | |
2151 | if (!clear_page_dirty_for_io(page)) | |
2152 | goto continue_unlock; | |
2153 | ||
b0af6d49 | 2154 | ret = __write_data_page(page, &submitted, wbc, io_type); |
8f46dcae | 2155 | if (unlikely(ret)) { |
0002b61b CY |
2156 | /* |
2157 | * keep nr_to_write, since vfs uses this to | |
2158 | * get # of written pages. | |
2159 | */ | |
2160 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
2161 | unlock_page(page); | |
2162 | ret = 0; | |
2163 | continue; | |
d29460e5 JK |
2164 | } else if (ret == -EAGAIN) { |
2165 | ret = 0; | |
2166 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
2167 | cond_resched(); | |
2168 | congestion_wait(BLK_RW_ASYNC, | |
2169 | HZ/50); | |
2170 | goto retry_write; | |
2171 | } | |
2172 | continue; | |
0002b61b | 2173 | } |
b230e6ca JK |
2174 | done_index = page->index + 1; |
2175 | done = 1; | |
2176 | break; | |
d68f735b | 2177 | } else if (submitted) { |
bab475c5 | 2178 | nwritten++; |
8f46dcae CY |
2179 | } |
2180 | ||
f8de4331 | 2181 | if (--wbc->nr_to_write <= 0 && |
687de7f1 | 2182 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
2183 | done = 1; |
2184 | break; | |
2185 | } | |
2186 | } | |
2187 | pagevec_release(&pvec); | |
2188 | cond_resched(); | |
2189 | } | |
2190 | ||
8f46dcae CY |
2191 | if (!cycled && !done) { |
2192 | cycled = 1; | |
2193 | index = 0; | |
2194 | end = writeback_index - 1; | |
2195 | goto retry; | |
2196 | } | |
2197 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) | |
2198 | mapping->writeback_index = done_index; | |
2199 | ||
bab475c5 | 2200 | if (nwritten) |
b9109b0e | 2201 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 2202 | NULL, 0, DATA); |
6ca56ca4 | 2203 | |
8f46dcae CY |
2204 | return ret; |
2205 | } | |
2206 | ||
853137ce JK |
2207 | static inline bool __should_serialize_io(struct inode *inode, |
2208 | struct writeback_control *wbc) | |
2209 | { | |
2210 | if (!S_ISREG(inode->i_mode)) | |
2211 | return false; | |
af033b2a CY |
2212 | if (IS_NOQUOTA(inode)) |
2213 | return false; | |
853137ce JK |
2214 | if (wbc->sync_mode != WB_SYNC_ALL) |
2215 | return true; | |
2216 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
2217 | return true; | |
2218 | return false; | |
2219 | } | |
2220 | ||
fc99fe27 | 2221 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
2222 | struct writeback_control *wbc, |
2223 | enum iostat_type io_type) | |
eb47b800 JK |
2224 | { |
2225 | struct inode *inode = mapping->host; | |
4081363f | 2226 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 2227 | struct blk_plug plug; |
eb47b800 | 2228 | int ret; |
853137ce | 2229 | bool locked = false; |
eb47b800 | 2230 | |
cfb185a1 | 2231 | /* deal with chardevs and other special file */ |
2232 | if (!mapping->a_ops->writepage) | |
2233 | return 0; | |
2234 | ||
6a290544 CY |
2235 | /* skip writing if there is no dirty page in this inode */ |
2236 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
2237 | return 0; | |
2238 | ||
0771fcc7 CY |
2239 | /* during POR, we don't need to trigger writepage at all. */ |
2240 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
2241 | goto skip_write; | |
2242 | ||
af033b2a CY |
2243 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
2244 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 2245 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 2246 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
2247 | goto skip_write; |
2248 | ||
d323d005 | 2249 | /* skip writing during file defragment */ |
91942321 | 2250 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
2251 | goto skip_write; |
2252 | ||
d31c7c3f YH |
2253 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
2254 | ||
687de7f1 JK |
2255 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
2256 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
2257 | atomic_inc(&sbi->wb_sync_req[DATA]); |
2258 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
2259 | goto skip_write; |
2260 | ||
853137ce JK |
2261 | if (__should_serialize_io(inode, wbc)) { |
2262 | mutex_lock(&sbi->writepages); | |
2263 | locked = true; | |
2264 | } | |
2265 | ||
9dfa1baf | 2266 | blk_start_plug(&plug); |
b0af6d49 | 2267 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 2268 | blk_finish_plug(&plug); |
687de7f1 | 2269 | |
853137ce JK |
2270 | if (locked) |
2271 | mutex_unlock(&sbi->writepages); | |
2272 | ||
687de7f1 | 2273 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 2274 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
2275 | /* |
2276 | * if some pages were truncated, we cannot guarantee its mapping->host | |
2277 | * to detect pending bios. | |
2278 | */ | |
458e6197 | 2279 | |
4d57b86d | 2280 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 2281 | return ret; |
d3baf95d JK |
2282 | |
2283 | skip_write: | |
a7ffdbe2 | 2284 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 2285 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 2286 | return 0; |
eb47b800 JK |
2287 | } |
2288 | ||
b0af6d49 CY |
2289 | static int f2fs_write_data_pages(struct address_space *mapping, |
2290 | struct writeback_control *wbc) | |
2291 | { | |
2292 | struct inode *inode = mapping->host; | |
2293 | ||
2294 | return __f2fs_write_data_pages(mapping, wbc, | |
2295 | F2FS_I(inode)->cp_task == current ? | |
2296 | FS_CP_DATA_IO : FS_DATA_IO); | |
2297 | } | |
2298 | ||
3aab8f82 CY |
2299 | static void f2fs_write_failed(struct address_space *mapping, loff_t to) |
2300 | { | |
2301 | struct inode *inode = mapping->host; | |
819d9153 | 2302 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 2303 | |
819d9153 | 2304 | if (to > i_size) { |
a33c1502 | 2305 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 2306 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 2307 | |
819d9153 | 2308 | truncate_pagecache(inode, i_size); |
af033b2a | 2309 | f2fs_truncate_blocks(inode, i_size, true, true); |
a33c1502 | 2310 | |
5a3a2d83 | 2311 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 2312 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
2313 | } |
2314 | } | |
2315 | ||
2aadac08 JK |
2316 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
2317 | struct page *page, loff_t pos, unsigned len, | |
2318 | block_t *blk_addr, bool *node_changed) | |
2319 | { | |
2320 | struct inode *inode = page->mapping->host; | |
2321 | pgoff_t index = page->index; | |
2322 | struct dnode_of_data dn; | |
2323 | struct page *ipage; | |
b4d07a3e | 2324 | bool locked = false; |
e15882b6 | 2325 | struct extent_info ei = {0,0,0}; |
2aadac08 JK |
2326 | int err = 0; |
2327 | ||
24b84912 JK |
2328 | /* |
2329 | * we already allocated all the blocks, so we don't need to get | |
2330 | * the block addresses when there is no need to fill the page. | |
2331 | */ | |
dc91de78 JK |
2332 | if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && |
2333 | !is_inode_flag_set(inode, FI_NO_PREALLOC)) | |
24b84912 JK |
2334 | return 0; |
2335 | ||
b4d07a3e | 2336 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 2337 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
59c9081b | 2338 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); |
b4d07a3e JK |
2339 | locked = true; |
2340 | } | |
2341 | restart: | |
2aadac08 | 2342 | /* check inline_data */ |
4d57b86d | 2343 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
2344 | if (IS_ERR(ipage)) { |
2345 | err = PTR_ERR(ipage); | |
2346 | goto unlock_out; | |
2347 | } | |
2348 | ||
2349 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
2350 | ||
2351 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 2352 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 2353 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 2354 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d CY |
2355 | if (inode->i_nlink) |
2356 | set_inline_node(ipage); | |
2aadac08 JK |
2357 | } else { |
2358 | err = f2fs_convert_inline_page(&dn, page); | |
2359 | if (err) | |
b4d07a3e JK |
2360 | goto out; |
2361 | if (dn.data_blkaddr == NULL_ADDR) | |
2362 | err = f2fs_get_block(&dn, index); | |
2363 | } | |
2364 | } else if (locked) { | |
2365 | err = f2fs_get_block(&dn, index); | |
2366 | } else { | |
2367 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
2368 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
2369 | } else { | |
b4d07a3e | 2370 | /* hole case */ |
4d57b86d | 2371 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 2372 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 2373 | f2fs_put_dnode(&dn); |
59c9081b YH |
2374 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
2375 | true); | |
b4d07a3e JK |
2376 | locked = true; |
2377 | goto restart; | |
2378 | } | |
2aadac08 JK |
2379 | } |
2380 | } | |
b4d07a3e | 2381 | |
2aadac08 JK |
2382 | /* convert_inline_page can make node_changed */ |
2383 | *blk_addr = dn.data_blkaddr; | |
2384 | *node_changed = dn.node_changed; | |
b4d07a3e | 2385 | out: |
2aadac08 JK |
2386 | f2fs_put_dnode(&dn); |
2387 | unlock_out: | |
b4d07a3e | 2388 | if (locked) |
59c9081b | 2389 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); |
2aadac08 JK |
2390 | return err; |
2391 | } | |
2392 | ||
eb47b800 JK |
2393 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
2394 | loff_t pos, unsigned len, unsigned flags, | |
2395 | struct page **pagep, void **fsdata) | |
2396 | { | |
2397 | struct inode *inode = mapping->host; | |
4081363f | 2398 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 2399 | struct page *page = NULL; |
09cbfeaf | 2400 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 2401 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 2402 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
2403 | int err = 0; |
2404 | ||
62aed044 CY |
2405 | trace_f2fs_write_begin(inode, pos, len, flags); |
2406 | ||
4354994f DR |
2407 | err = f2fs_is_checkpoint_ready(sbi); |
2408 | if (err) | |
2409 | goto fail; | |
2410 | ||
455e3a58 JK |
2411 | if ((f2fs_is_atomic_file(inode) && |
2412 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
2413 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 2414 | err = -ENOMEM; |
a2e2e76b | 2415 | drop_atomic = true; |
57864ae5 JK |
2416 | goto fail; |
2417 | } | |
2418 | ||
5f727395 JK |
2419 | /* |
2420 | * We should check this at this moment to avoid deadlock on inode page | |
2421 | * and #0 page. The locking rule for inline_data conversion should be: | |
2422 | * lock_page(page #0) -> lock_page(inode_page) | |
2423 | */ | |
2424 | if (index != 0) { | |
2425 | err = f2fs_convert_inline_inode(inode); | |
2426 | if (err) | |
2427 | goto fail; | |
2428 | } | |
afcb7ca0 | 2429 | repeat: |
86d54795 JK |
2430 | /* |
2431 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
2432 | * wait_for_stable_page. Will wait that below with our IO control. | |
2433 | */ | |
01eccef7 | 2434 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 2435 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
2436 | if (!page) { |
2437 | err = -ENOMEM; | |
2438 | goto fail; | |
2439 | } | |
d5f66990 | 2440 | |
eb47b800 JK |
2441 | *pagep = page; |
2442 | ||
2aadac08 JK |
2443 | err = prepare_write_begin(sbi, page, pos, len, |
2444 | &blkaddr, &need_balance); | |
9ba69cf9 | 2445 | if (err) |
2aadac08 | 2446 | goto fail; |
9ba69cf9 | 2447 | |
af033b2a CY |
2448 | if (need_balance && !IS_NOQUOTA(inode) && |
2449 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 2450 | unlock_page(page); |
2c4db1a6 | 2451 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
2452 | lock_page(page); |
2453 | if (page->mapping != mapping) { | |
2454 | /* The page got truncated from under us */ | |
2455 | f2fs_put_page(page, 1); | |
2456 | goto repeat; | |
2457 | } | |
2458 | } | |
2459 | ||
fec1d657 | 2460 | f2fs_wait_on_page_writeback(page, DATA, false); |
b3d208f9 | 2461 | |
649d7df2 JK |
2462 | if (len == PAGE_SIZE || PageUptodate(page)) |
2463 | return 0; | |
eb47b800 | 2464 | |
746e2403 YH |
2465 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode)) { |
2466 | zero_user_segment(page, len, PAGE_SIZE); | |
2467 | return 0; | |
2468 | } | |
2469 | ||
2aadac08 | 2470 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 2471 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 2472 | SetPageUptodate(page); |
eb47b800 | 2473 | } else { |
13ba41e3 JK |
2474 | err = f2fs_submit_page_read(inode, page, blkaddr); |
2475 | if (err) | |
78682f79 | 2476 | goto fail; |
d54c795b | 2477 | |
393ff91f | 2478 | lock_page(page); |
6bacf52f | 2479 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
2480 | f2fs_put_page(page, 1); |
2481 | goto repeat; | |
eb47b800 | 2482 | } |
1563ac75 CY |
2483 | if (unlikely(!PageUptodate(page))) { |
2484 | err = -EIO; | |
2485 | goto fail; | |
4375a336 | 2486 | } |
eb47b800 | 2487 | } |
eb47b800 | 2488 | return 0; |
9ba69cf9 | 2489 | |
3aab8f82 | 2490 | fail: |
86531d6b | 2491 | f2fs_put_page(page, 1); |
3aab8f82 | 2492 | f2fs_write_failed(mapping, pos + len); |
a2e2e76b | 2493 | if (drop_atomic) |
4d57b86d | 2494 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 2495 | return err; |
eb47b800 JK |
2496 | } |
2497 | ||
a1dd3c13 JK |
2498 | static int f2fs_write_end(struct file *file, |
2499 | struct address_space *mapping, | |
2500 | loff_t pos, unsigned len, unsigned copied, | |
2501 | struct page *page, void *fsdata) | |
2502 | { | |
2503 | struct inode *inode = page->mapping->host; | |
2504 | ||
dfb2bf38 CY |
2505 | trace_f2fs_write_end(inode, pos, len, copied); |
2506 | ||
649d7df2 JK |
2507 | /* |
2508 | * This should be come from len == PAGE_SIZE, and we expect copied | |
2509 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
2510 | * let generic_perform_write() try to copy data again through copied=0. | |
2511 | */ | |
2512 | if (!PageUptodate(page)) { | |
746e2403 | 2513 | if (unlikely(copied != len)) |
649d7df2 JK |
2514 | copied = 0; |
2515 | else | |
2516 | SetPageUptodate(page); | |
2517 | } | |
2518 | if (!copied) | |
2519 | goto unlock_out; | |
2520 | ||
34ba94ba | 2521 | set_page_dirty(page); |
a1dd3c13 | 2522 | |
fc9581c8 JK |
2523 | if (pos + copied > i_size_read(inode)) |
2524 | f2fs_i_size_write(inode, pos + copied); | |
649d7df2 | 2525 | unlock_out: |
3024c9a1 | 2526 | f2fs_put_page(page, 1); |
d0239e1b | 2527 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
2528 | return copied; |
2529 | } | |
2530 | ||
6f673763 OS |
2531 | static int check_direct_IO(struct inode *inode, struct iov_iter *iter, |
2532 | loff_t offset) | |
944fcfc1 | 2533 | { |
8a56dd96 JK |
2534 | unsigned i_blkbits = READ_ONCE(inode->i_blkbits); |
2535 | unsigned blkbits = i_blkbits; | |
2536 | unsigned blocksize_mask = (1 << blkbits) - 1; | |
2537 | unsigned long align = offset | iov_iter_alignment(iter); | |
2538 | struct block_device *bdev = inode->i_sb->s_bdev; | |
2539 | ||
2540 | if (align & blocksize_mask) { | |
2541 | if (bdev) | |
2542 | blkbits = blksize_bits(bdev_logical_block_size(bdev)); | |
2543 | blocksize_mask = (1 << blkbits) - 1; | |
2544 | if (align & blocksize_mask) | |
2545 | return -EINVAL; | |
2546 | return 1; | |
2547 | } | |
944fcfc1 JK |
2548 | return 0; |
2549 | } | |
2550 | ||
c8b8e32d | 2551 | static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
eb47b800 | 2552 | { |
b439b103 | 2553 | struct address_space *mapping = iocb->ki_filp->f_mapping; |
3aab8f82 | 2554 | struct inode *inode = mapping->host; |
0cdd3195 | 2555 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f847c699 | 2556 | struct f2fs_inode_info *fi = F2FS_I(inode); |
3aab8f82 | 2557 | size_t count = iov_iter_count(iter); |
c8b8e32d | 2558 | loff_t offset = iocb->ki_pos; |
82e0a5aa | 2559 | int rw = iov_iter_rw(iter); |
3aab8f82 | 2560 | int err; |
0cdd3195 | 2561 | enum rw_hint hint = iocb->ki_hint; |
63189b78 | 2562 | int whint_mode = F2FS_OPTION(sbi).whint_mode; |
f847c699 | 2563 | bool do_opu; |
944fcfc1 | 2564 | |
b439b103 | 2565 | err = check_direct_IO(inode, iter, offset); |
b9d777b8 | 2566 | if (err) |
8a56dd96 | 2567 | return err < 0 ? err : 0; |
9ffe0fb5 | 2568 | |
f847c699 | 2569 | if (f2fs_force_buffered_io(inode, iocb, iter)) |
36abef4e | 2570 | return 0; |
fcc85a4d | 2571 | |
f847c699 CY |
2572 | do_opu = allow_outplace_dio(inode, iocb, iter); |
2573 | ||
5302fb00 | 2574 | trace_f2fs_direct_IO_enter(inode, offset, count, rw); |
70407fad | 2575 | |
0cdd3195 HL |
2576 | if (rw == WRITE && whint_mode == WHINT_MODE_OFF) |
2577 | iocb->ki_hint = WRITE_LIFE_NOT_SET; | |
2578 | ||
f847c699 CY |
2579 | if (iocb->ki_flags & IOCB_NOWAIT) { |
2580 | if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { | |
2581 | iocb->ki_hint = hint; | |
2582 | err = -EAGAIN; | |
2583 | goto out; | |
2584 | } | |
2585 | if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { | |
2586 | up_read(&fi->i_gc_rwsem[rw]); | |
b91050a8 HL |
2587 | iocb->ki_hint = hint; |
2588 | err = -EAGAIN; | |
2589 | goto out; | |
2590 | } | |
f847c699 CY |
2591 | } else { |
2592 | down_read(&fi->i_gc_rwsem[rw]); | |
2593 | if (do_opu) | |
2594 | down_read(&fi->i_gc_rwsem[READ]); | |
b91050a8 HL |
2595 | } |
2596 | ||
c8b8e32d | 2597 | err = blockdev_direct_IO(iocb, inode, iter, get_data_block_dio); |
f847c699 CY |
2598 | |
2599 | if (do_opu) | |
2600 | up_read(&fi->i_gc_rwsem[READ]); | |
2601 | ||
2602 | up_read(&fi->i_gc_rwsem[rw]); | |
82e0a5aa CY |
2603 | |
2604 | if (rw == WRITE) { | |
0cdd3195 HL |
2605 | if (whint_mode == WHINT_MODE_OFF) |
2606 | iocb->ki_hint = hint; | |
b0af6d49 CY |
2607 | if (err > 0) { |
2608 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
2609 | err); | |
f847c699 CY |
2610 | if (!do_opu) |
2611 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
b0af6d49 | 2612 | } else if (err < 0) { |
6bfc4919 | 2613 | f2fs_write_failed(mapping, offset + count); |
b0af6d49 | 2614 | } |
6bfc4919 | 2615 | } |
70407fad | 2616 | |
b91050a8 | 2617 | out: |
5302fb00 | 2618 | trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); |
70407fad | 2619 | |
3aab8f82 | 2620 | return err; |
eb47b800 JK |
2621 | } |
2622 | ||
487261f3 CY |
2623 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
2624 | unsigned int length) | |
eb47b800 JK |
2625 | { |
2626 | struct inode *inode = page->mapping->host; | |
487261f3 | 2627 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 2628 | |
487261f3 | 2629 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 2630 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
2631 | return; |
2632 | ||
487261f3 | 2633 | if (PageDirty(page)) { |
933439c8 | 2634 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 2635 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 2636 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 2637 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 2638 | } else { |
487261f3 | 2639 | inode_dec_dirty_pages(inode); |
4d57b86d | 2640 | f2fs_remove_dirty_inode(inode); |
933439c8 | 2641 | } |
487261f3 | 2642 | } |
decd36b6 | 2643 | |
2baf0781 CY |
2644 | clear_cold_data(page); |
2645 | ||
decd36b6 CY |
2646 | /* This is atomic written page, keep Private */ |
2647 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
4d57b86d | 2648 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 2649 | |
23dc974e | 2650 | set_page_private(page, 0); |
eb47b800 JK |
2651 | ClearPagePrivate(page); |
2652 | } | |
2653 | ||
487261f3 | 2654 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 2655 | { |
f68daeeb JK |
2656 | /* If this is dirty page, keep PagePrivate */ |
2657 | if (PageDirty(page)) | |
2658 | return 0; | |
2659 | ||
decd36b6 CY |
2660 | /* This is atomic written page, keep Private */ |
2661 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
2662 | return 0; | |
2663 | ||
2baf0781 | 2664 | clear_cold_data(page); |
23dc974e | 2665 | set_page_private(page, 0); |
eb47b800 | 2666 | ClearPagePrivate(page); |
c3850aa1 | 2667 | return 1; |
eb47b800 JK |
2668 | } |
2669 | ||
2670 | static int f2fs_set_data_page_dirty(struct page *page) | |
2671 | { | |
2672 | struct address_space *mapping = page->mapping; | |
2673 | struct inode *inode = mapping->host; | |
2674 | ||
26c6b887 JK |
2675 | trace_f2fs_set_page_dirty(page, DATA); |
2676 | ||
237c0790 JK |
2677 | if (!PageUptodate(page)) |
2678 | SetPageUptodate(page); | |
34ba94ba | 2679 | |
5fe45743 | 2680 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
decd36b6 | 2681 | if (!IS_ATOMIC_WRITTEN_PAGE(page)) { |
4d57b86d | 2682 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
2683 | return 1; |
2684 | } | |
2685 | /* | |
2686 | * Previously, this page has been registered, we just | |
2687 | * return here. | |
2688 | */ | |
2689 | return 0; | |
34ba94ba JK |
2690 | } |
2691 | ||
eb47b800 | 2692 | if (!PageDirty(page)) { |
b87078ad | 2693 | __set_page_dirty_nobuffers(page); |
4d57b86d | 2694 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
2695 | return 1; |
2696 | } | |
2697 | return 0; | |
2698 | } | |
2699 | ||
c01e54b7 JK |
2700 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
2701 | { | |
454ae7e5 CY |
2702 | struct inode *inode = mapping->host; |
2703 | ||
1d373a0e JK |
2704 | if (f2fs_has_inline_data(inode)) |
2705 | return 0; | |
2706 | ||
2707 | /* make sure allocating whole blocks */ | |
2708 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
2709 | filemap_write_and_wait(mapping); | |
2710 | ||
e2b4e2bc | 2711 | return generic_block_bmap(mapping, block, get_data_block_bmap); |
429511cd CY |
2712 | } |
2713 | ||
5b7a487c WG |
2714 | #ifdef CONFIG_MIGRATION |
2715 | #include <linux/migrate.h> | |
2716 | ||
2717 | int f2fs_migrate_page(struct address_space *mapping, | |
2718 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
2719 | { | |
2720 | int rc, extra_count; | |
2721 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
2722 | bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); | |
2723 | ||
2724 | BUG_ON(PageWriteback(page)); | |
2725 | ||
2726 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
2727 | if (atomic_written) { |
2728 | if (mode != MIGRATE_SYNC) | |
2729 | return -EBUSY; | |
2730 | if (!mutex_trylock(&fi->inmem_lock)) | |
2731 | return -EAGAIN; | |
2732 | } | |
5b7a487c WG |
2733 | |
2734 | /* | |
2735 | * A reference is expected if PagePrivate set when move mapping, | |
2736 | * however F2FS breaks this for maintaining dirty page counts when | |
2737 | * truncating pages. So here adjusting the 'extra_count' make it work. | |
2738 | */ | |
2739 | extra_count = (atomic_written ? 1 : 0) - page_has_private(page); | |
2740 | rc = migrate_page_move_mapping(mapping, newpage, | |
2741 | page, NULL, mode, extra_count); | |
2742 | if (rc != MIGRATEPAGE_SUCCESS) { | |
2743 | if (atomic_written) | |
2744 | mutex_unlock(&fi->inmem_lock); | |
2745 | return rc; | |
2746 | } | |
2747 | ||
2748 | if (atomic_written) { | |
2749 | struct inmem_pages *cur; | |
2750 | list_for_each_entry(cur, &fi->inmem_pages, list) | |
2751 | if (cur->page == page) { | |
2752 | cur->page = newpage; | |
2753 | break; | |
2754 | } | |
2755 | mutex_unlock(&fi->inmem_lock); | |
2756 | put_page(page); | |
2757 | get_page(newpage); | |
2758 | } | |
2759 | ||
2760 | if (PagePrivate(page)) | |
2761 | SetPagePrivate(newpage); | |
2762 | set_page_private(newpage, page_private(page)); | |
2763 | ||
2916ecc0 JG |
2764 | if (mode != MIGRATE_SYNC_NO_COPY) |
2765 | migrate_page_copy(newpage, page); | |
2766 | else | |
2767 | migrate_page_states(newpage, page); | |
5b7a487c WG |
2768 | |
2769 | return MIGRATEPAGE_SUCCESS; | |
2770 | } | |
2771 | #endif | |
2772 | ||
eb47b800 JK |
2773 | const struct address_space_operations f2fs_dblock_aops = { |
2774 | .readpage = f2fs_read_data_page, | |
2775 | .readpages = f2fs_read_data_pages, | |
2776 | .writepage = f2fs_write_data_page, | |
2777 | .writepages = f2fs_write_data_pages, | |
2778 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 2779 | .write_end = f2fs_write_end, |
eb47b800 | 2780 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
2781 | .invalidatepage = f2fs_invalidate_page, |
2782 | .releasepage = f2fs_release_page, | |
eb47b800 | 2783 | .direct_IO = f2fs_direct_IO, |
c01e54b7 | 2784 | .bmap = f2fs_bmap, |
5b7a487c WG |
2785 | #ifdef CONFIG_MIGRATION |
2786 | .migratepage = f2fs_migrate_page, | |
2787 | #endif | |
eb47b800 | 2788 | }; |
6dbb1796 | 2789 | |
5ec2d99d | 2790 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
2791 | { |
2792 | struct address_space *mapping = page_mapping(page); | |
2793 | unsigned long flags; | |
2794 | ||
2795 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 2796 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
2797 | PAGECACHE_TAG_DIRTY); |
2798 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
2799 | } | |
2800 | ||
6dbb1796 EB |
2801 | int __init f2fs_init_post_read_processing(void) |
2802 | { | |
2803 | bio_post_read_ctx_cache = KMEM_CACHE(bio_post_read_ctx, 0); | |
2804 | if (!bio_post_read_ctx_cache) | |
2805 | goto fail; | |
2806 | bio_post_read_ctx_pool = | |
2807 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
2808 | bio_post_read_ctx_cache); | |
2809 | if (!bio_post_read_ctx_pool) | |
2810 | goto fail_free_cache; | |
2811 | return 0; | |
2812 | ||
2813 | fail_free_cache: | |
2814 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
2815 | fail: | |
2816 | return -ENOMEM; | |
2817 | } | |
2818 | ||
2819 | void __exit f2fs_destroy_post_read_processing(void) | |
2820 | { | |
2821 | mempool_destroy(bio_post_read_ctx_pool); | |
2822 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
2823 | } |