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 | ||
b9109b0e | 375 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 376 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
377 | { |
378 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 379 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 380 | |
df0f8dc0 | 381 | down_write(&io->io_rwsem); |
458e6197 JK |
382 | |
383 | /* change META to META_FLUSH in the checkpoint procedure */ | |
384 | if (type >= META_FLUSH) { | |
385 | io->fio.type = META_FLUSH; | |
04d328de | 386 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 387 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 388 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 389 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
390 | } |
391 | __submit_merged_bio(io); | |
df0f8dc0 | 392 | up_write(&io->io_rwsem); |
93dfe2ac JK |
393 | } |
394 | ||
a912b54d | 395 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
396 | struct inode *inode, struct page *page, |
397 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 398 | { |
a912b54d | 399 | enum temp_type temp; |
1e771e83 | 400 | bool ret = true; |
a912b54d JK |
401 | |
402 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
403 | if (!force) { |
404 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
405 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 406 | |
1e771e83 YS |
407 | down_read(&io->io_rwsem); |
408 | ret = __has_merged_page(io, inode, page, ino); | |
409 | up_read(&io->io_rwsem); | |
410 | } | |
411 | if (ret) | |
412 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
413 | |
414 | /* TODO: use HOT temp only for meta pages now. */ | |
415 | if (type >= META) | |
416 | break; | |
417 | } | |
0c3a5797 CY |
418 | } |
419 | ||
b9109b0e | 420 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 421 | { |
a912b54d | 422 | __submit_merged_write_cond(sbi, NULL, 0, 0, type, true); |
0c3a5797 CY |
423 | } |
424 | ||
b9109b0e | 425 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
426 | struct inode *inode, struct page *page, |
427 | nid_t ino, enum page_type type) | |
0c3a5797 | 428 | { |
bab475c5 | 429 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
430 | } |
431 | ||
b9109b0e | 432 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 433 | { |
b9109b0e JK |
434 | f2fs_submit_merged_write(sbi, DATA); |
435 | f2fs_submit_merged_write(sbi, NODE); | |
436 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
437 | } |
438 | ||
93dfe2ac JK |
439 | /* |
440 | * Fill the locked page with data located in the block address. | |
771a9a71 | 441 | * A caller needs to unlock the page on failure. |
93dfe2ac | 442 | */ |
05ca3632 | 443 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 444 | { |
93dfe2ac | 445 | struct bio *bio; |
0b81d077 JK |
446 | struct page *page = fio->encrypted_page ? |
447 | fio->encrypted_page : fio->page; | |
93dfe2ac | 448 | |
c9b60788 CY |
449 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
450 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
451 | return -EFAULT; | |
452 | ||
2ace38e0 | 453 | trace_f2fs_submit_page_bio(page, fio); |
05ca3632 | 454 | f2fs_trace_ios(fio, 0); |
93dfe2ac JK |
455 | |
456 | /* Allocate a new bio */ | |
578c6478 | 457 | bio = __bio_alloc(fio->sbi, fio->new_blkaddr, fio->io_wbc, |
0cdd3195 | 458 | 1, is_read_io(fio->op), fio->type, fio->temp); |
93dfe2ac | 459 | |
09cbfeaf | 460 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 461 | bio_put(bio); |
93dfe2ac JK |
462 | return -EFAULT; |
463 | } | |
78efac53 CY |
464 | |
465 | if (fio->io_wbc && !is_read_io(fio->op)) | |
466 | wbc_account_io(fio->io_wbc, page, PAGE_SIZE); | |
467 | ||
04d328de | 468 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 469 | |
5f9abab4 JK |
470 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
471 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
472 | |
473 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
474 | return 0; |
475 | } | |
476 | ||
fe16efe6 | 477 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 478 | { |
05ca3632 | 479 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 480 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 481 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 482 | struct page *bio_page; |
93dfe2ac | 483 | |
b9109b0e | 484 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 485 | |
fb830fc5 CY |
486 | down_write(&io->io_rwsem); |
487 | next: | |
488 | if (fio->in_list) { | |
489 | spin_lock(&io->io_lock); | |
490 | if (list_empty(&io->io_list)) { | |
491 | spin_unlock(&io->io_lock); | |
fe16efe6 | 492 | goto out; |
fb830fc5 CY |
493 | } |
494 | fio = list_first_entry(&io->io_list, | |
495 | struct f2fs_io_info, list); | |
496 | list_del(&fio->list); | |
497 | spin_unlock(&io->io_lock); | |
498 | } | |
93dfe2ac | 499 | |
e1da7872 | 500 | if (__is_valid_data_blkaddr(fio->old_blkaddr)) |
0833721e YH |
501 | verify_block_addr(fio, fio->old_blkaddr); |
502 | verify_block_addr(fio, fio->new_blkaddr); | |
93dfe2ac | 503 | |
36951b38 CY |
504 | bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page; |
505 | ||
ebf7c522 TM |
506 | /* set submitted = true as a return value */ |
507 | fio->submitted = true; | |
d68f735b | 508 | |
b9109b0e | 509 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 510 | |
7a9d7548 | 511 | if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1 || |
3c62be17 JK |
512 | (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags) || |
513 | !__same_bdev(sbi, fio->new_blkaddr, io->bio))) | |
458e6197 | 514 | __submit_merged_bio(io); |
93dfe2ac JK |
515 | alloc_new: |
516 | if (io->bio == NULL) { | |
0a595eba JK |
517 | if ((fio->type == DATA || fio->type == NODE) && |
518 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { | |
b9109b0e | 519 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
520 | fio->retry = true; |
521 | goto skip; | |
0a595eba | 522 | } |
578c6478 | 523 | io->bio = __bio_alloc(sbi, fio->new_blkaddr, fio->io_wbc, |
0cdd3195 HL |
524 | BIO_MAX_PAGES, false, |
525 | fio->type, fio->temp); | |
458e6197 | 526 | io->fio = *fio; |
93dfe2ac JK |
527 | } |
528 | ||
a912b54d | 529 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 530 | __submit_merged_bio(io); |
93dfe2ac JK |
531 | goto alloc_new; |
532 | } | |
533 | ||
578c6478 YY |
534 | if (fio->io_wbc) |
535 | wbc_account_io(fio->io_wbc, bio_page, PAGE_SIZE); | |
536 | ||
7a9d7548 | 537 | io->last_block_in_bio = fio->new_blkaddr; |
05ca3632 | 538 | f2fs_trace_ios(fio, 0); |
fb830fc5 CY |
539 | |
540 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 541 | skip: |
fb830fc5 CY |
542 | if (fio->in_list) |
543 | goto next; | |
fe16efe6 | 544 | out: |
4354994f DR |
545 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
546 | f2fs_is_checkpoint_ready(sbi)) | |
5ce80586 | 547 | __submit_merged_bio(io); |
df0f8dc0 | 548 | up_write(&io->io_rwsem); |
93dfe2ac JK |
549 | } |
550 | ||
13ba41e3 | 551 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
e2e59414 | 552 | unsigned nr_pages, unsigned op_flag) |
13ba41e3 JK |
553 | { |
554 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 555 | struct bio *bio; |
6dbb1796 EB |
556 | struct bio_post_read_ctx *ctx; |
557 | unsigned int post_read_steps = 0; | |
13ba41e3 | 558 | |
91291e99 CY |
559 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) |
560 | return ERR_PTR(-EFAULT); | |
561 | ||
d62fe971 | 562 | bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false); |
6dbb1796 | 563 | if (!bio) |
13ba41e3 | 564 | return ERR_PTR(-ENOMEM); |
13ba41e3 JK |
565 | f2fs_target_device(sbi, blkaddr, bio); |
566 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 567 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 568 | |
6dbb1796 EB |
569 | if (f2fs_encrypted_file(inode)) |
570 | post_read_steps |= 1 << STEP_DECRYPT; | |
571 | if (post_read_steps) { | |
572 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); | |
573 | if (!ctx) { | |
574 | bio_put(bio); | |
575 | return ERR_PTR(-ENOMEM); | |
576 | } | |
577 | ctx->bio = bio; | |
578 | ctx->enabled_steps = post_read_steps; | |
579 | bio->bi_private = ctx; | |
6dbb1796 EB |
580 | } |
581 | ||
13ba41e3 JK |
582 | return bio; |
583 | } | |
584 | ||
585 | /* This can handle encryption stuffs */ | |
586 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
587 | block_t blkaddr) | |
588 | { | |
e2e59414 | 589 | struct bio *bio = f2fs_grab_read_bio(inode, blkaddr, 1, 0); |
13ba41e3 JK |
590 | |
591 | if (IS_ERR(bio)) | |
592 | return PTR_ERR(bio); | |
593 | ||
0ded69f6 JK |
594 | /* wait for GCed page writeback via META_MAPPING */ |
595 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
596 | ||
13ba41e3 JK |
597 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
598 | bio_put(bio); | |
599 | return -EFAULT; | |
600 | } | |
fb7d70db | 601 | ClearPageError(page); |
5f9abab4 | 602 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); |
13ba41e3 JK |
603 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
604 | return 0; | |
605 | } | |
606 | ||
46008c6d CY |
607 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
608 | { | |
609 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
610 | __le32 *addr_array; | |
7a2af766 CY |
611 | int base = 0; |
612 | ||
613 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
614 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
615 | |
616 | /* Get physical address of data block */ | |
617 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 618 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
619 | } |
620 | ||
0a8165d7 | 621 | /* |
eb47b800 JK |
622 | * Lock ordering for the change of data block address: |
623 | * ->data_page | |
624 | * ->node_page | |
625 | * update block addresses in the node page | |
626 | */ | |
4d57b86d | 627 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 628 | { |
bae0ee7a | 629 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
630 | __set_data_blkaddr(dn); |
631 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 632 | dn->node_changed = true; |
eb47b800 JK |
633 | } |
634 | ||
f28b3434 CY |
635 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
636 | { | |
637 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 638 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
639 | f2fs_update_extent_cache(dn); |
640 | } | |
641 | ||
46008c6d | 642 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 643 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 644 | { |
4081363f | 645 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 646 | int err; |
eb47b800 | 647 | |
46008c6d CY |
648 | if (!count) |
649 | return 0; | |
650 | ||
91942321 | 651 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 652 | return -EPERM; |
0abd675e CY |
653 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
654 | return err; | |
eb47b800 | 655 | |
46008c6d CY |
656 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
657 | dn->ofs_in_node, count); | |
658 | ||
bae0ee7a | 659 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
660 | |
661 | for (; count > 0; dn->ofs_in_node++) { | |
7a2af766 CY |
662 | block_t blkaddr = datablock_addr(dn->inode, |
663 | dn->node_page, dn->ofs_in_node); | |
46008c6d CY |
664 | if (blkaddr == NULL_ADDR) { |
665 | dn->data_blkaddr = NEW_ADDR; | |
666 | __set_data_blkaddr(dn); | |
667 | count--; | |
668 | } | |
669 | } | |
670 | ||
671 | if (set_page_dirty(dn->node_page)) | |
672 | dn->node_changed = true; | |
eb47b800 JK |
673 | return 0; |
674 | } | |
675 | ||
46008c6d | 676 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 677 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
678 | { |
679 | unsigned int ofs_in_node = dn->ofs_in_node; | |
680 | int ret; | |
681 | ||
4d57b86d | 682 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
683 | dn->ofs_in_node = ofs_in_node; |
684 | return ret; | |
685 | } | |
686 | ||
b600965c HL |
687 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
688 | { | |
689 | bool need_put = dn->inode_page ? false : true; | |
690 | int err; | |
691 | ||
4d57b86d | 692 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
693 | if (err) |
694 | return err; | |
a8865372 | 695 | |
b600965c | 696 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 697 | err = f2fs_reserve_new_block(dn); |
a8865372 | 698 | if (err || need_put) |
b600965c HL |
699 | f2fs_put_dnode(dn); |
700 | return err; | |
701 | } | |
702 | ||
759af1c9 | 703 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 704 | { |
e15882b6 | 705 | struct extent_info ei = {0,0,0}; |
759af1c9 | 706 | struct inode *inode = dn->inode; |
028a41e8 | 707 | |
759af1c9 FL |
708 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
709 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
710 | return 0; | |
429511cd | 711 | } |
028a41e8 | 712 | |
759af1c9 | 713 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
714 | } |
715 | ||
4d57b86d | 716 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 717 | int op_flags, bool for_write) |
eb47b800 | 718 | { |
eb47b800 JK |
719 | struct address_space *mapping = inode->i_mapping; |
720 | struct dnode_of_data dn; | |
721 | struct page *page; | |
e15882b6 | 722 | struct extent_info ei = {0,0,0}; |
eb47b800 | 723 | int err; |
4375a336 | 724 | |
a56c7c6f | 725 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
726 | if (!page) |
727 | return ERR_PTR(-ENOMEM); | |
728 | ||
cb3bc9ee CY |
729 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
730 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
731 | goto got_it; | |
732 | } | |
733 | ||
eb47b800 | 734 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 735 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
736 | if (err) |
737 | goto put_err; | |
eb47b800 JK |
738 | f2fs_put_dnode(&dn); |
739 | ||
6bacf52f | 740 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
741 | err = -ENOENT; |
742 | goto put_err; | |
650495de | 743 | } |
cb3bc9ee | 744 | got_it: |
43f3eae1 JK |
745 | if (PageUptodate(page)) { |
746 | unlock_page(page); | |
eb47b800 | 747 | return page; |
43f3eae1 | 748 | } |
eb47b800 | 749 | |
d59ff4df JK |
750 | /* |
751 | * A new dentry page is allocated but not able to be written, since its | |
752 | * new inode page couldn't be allocated due to -ENOSPC. | |
753 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
754 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
755 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
756 | */ |
757 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 758 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
759 | if (!PageUptodate(page)) |
760 | SetPageUptodate(page); | |
43f3eae1 | 761 | unlock_page(page); |
d59ff4df JK |
762 | return page; |
763 | } | |
eb47b800 | 764 | |
13ba41e3 | 765 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr); |
393ff91f | 766 | if (err) |
86531d6b | 767 | goto put_err; |
43f3eae1 | 768 | return page; |
86531d6b JK |
769 | |
770 | put_err: | |
771 | f2fs_put_page(page, 1); | |
772 | return ERR_PTR(err); | |
43f3eae1 JK |
773 | } |
774 | ||
4d57b86d | 775 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
776 | { |
777 | struct address_space *mapping = inode->i_mapping; | |
778 | struct page *page; | |
779 | ||
780 | page = find_get_page(mapping, index); | |
781 | if (page && PageUptodate(page)) | |
782 | return page; | |
783 | f2fs_put_page(page, 0); | |
784 | ||
4d57b86d | 785 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
786 | if (IS_ERR(page)) |
787 | return page; | |
788 | ||
789 | if (PageUptodate(page)) | |
790 | return page; | |
791 | ||
792 | wait_on_page_locked(page); | |
793 | if (unlikely(!PageUptodate(page))) { | |
794 | f2fs_put_page(page, 0); | |
795 | return ERR_PTR(-EIO); | |
796 | } | |
797 | return page; | |
798 | } | |
799 | ||
800 | /* | |
801 | * If it tries to access a hole, return an error. | |
802 | * Because, the callers, functions in dir.c and GC, should be able to know | |
803 | * whether this page exists or not. | |
804 | */ | |
4d57b86d | 805 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 806 | bool for_write) |
43f3eae1 JK |
807 | { |
808 | struct address_space *mapping = inode->i_mapping; | |
809 | struct page *page; | |
810 | repeat: | |
4d57b86d | 811 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
812 | if (IS_ERR(page)) |
813 | return page; | |
393ff91f | 814 | |
43f3eae1 | 815 | /* wait for read completion */ |
393ff91f | 816 | lock_page(page); |
6bacf52f | 817 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
818 | f2fs_put_page(page, 1); |
819 | goto repeat; | |
eb47b800 | 820 | } |
1563ac75 CY |
821 | if (unlikely(!PageUptodate(page))) { |
822 | f2fs_put_page(page, 1); | |
823 | return ERR_PTR(-EIO); | |
824 | } | |
eb47b800 JK |
825 | return page; |
826 | } | |
827 | ||
0a8165d7 | 828 | /* |
eb47b800 JK |
829 | * Caller ensures that this data page is never allocated. |
830 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 831 | * |
4f4124d0 CY |
832 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
833 | * f2fs_unlock_op(). | |
470f00e9 CY |
834 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
835 | * ipage should be released by this function. | |
eb47b800 | 836 | */ |
4d57b86d | 837 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 838 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 839 | { |
eb47b800 JK |
840 | struct address_space *mapping = inode->i_mapping; |
841 | struct page *page; | |
842 | struct dnode_of_data dn; | |
843 | int err; | |
7612118a | 844 | |
a56c7c6f | 845 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
846 | if (!page) { |
847 | /* | |
848 | * before exiting, we should make sure ipage will be released | |
849 | * if any error occur. | |
850 | */ | |
851 | f2fs_put_page(ipage, 1); | |
01f28610 | 852 | return ERR_PTR(-ENOMEM); |
470f00e9 | 853 | } |
eb47b800 | 854 | |
a8865372 | 855 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 856 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
857 | if (err) { |
858 | f2fs_put_page(page, 1); | |
eb47b800 | 859 | return ERR_PTR(err); |
a8865372 | 860 | } |
01f28610 JK |
861 | if (!ipage) |
862 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
863 | |
864 | if (PageUptodate(page)) | |
01f28610 | 865 | goto got_it; |
eb47b800 JK |
866 | |
867 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 868 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
869 | if (!PageUptodate(page)) |
870 | SetPageUptodate(page); | |
eb47b800 | 871 | } else { |
4375a336 | 872 | f2fs_put_page(page, 1); |
a8865372 | 873 | |
7612118a JK |
874 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
875 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 876 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 877 | if (IS_ERR(page)) |
7612118a | 878 | return page; |
eb47b800 | 879 | } |
01f28610 | 880 | got_it: |
9edcdabf | 881 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 882 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 883 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
884 | return page; |
885 | } | |
886 | ||
d5097be5 | 887 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 888 | { |
4081363f | 889 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 890 | struct f2fs_summary sum; |
bfad7c2d | 891 | struct node_info ni; |
6aa58d8a | 892 | block_t old_blkaddr; |
46008c6d | 893 | blkcnt_t count = 1; |
0abd675e | 894 | int err; |
bfad7c2d | 895 | |
91942321 | 896 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 897 | return -EPERM; |
df6136ef | 898 | |
7735730d CY |
899 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
900 | if (err) | |
901 | return err; | |
902 | ||
7a2af766 CY |
903 | dn->data_blkaddr = datablock_addr(dn->inode, |
904 | dn->node_page, dn->ofs_in_node); | |
f847c699 | 905 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
906 | goto alloc; |
907 | ||
0abd675e CY |
908 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
909 | return err; | |
bfad7c2d | 910 | |
df6136ef | 911 | alloc: |
bfad7c2d | 912 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
913 | old_blkaddr = dn->data_blkaddr; |
914 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
d5097be5 | 915 | &sum, seg_type, NULL, false); |
6aa58d8a CY |
916 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
917 | invalidate_mapping_pages(META_MAPPING(sbi), | |
918 | old_blkaddr, old_blkaddr); | |
4d57b86d | 919 | f2fs_set_data_blkaddr(dn); |
bfad7c2d | 920 | |
0a4daae5 JK |
921 | /* |
922 | * i_size will be updated by direct_IO. Otherwise, we'll get stale | |
923 | * data from unwritten block via dio_read. | |
924 | */ | |
bfad7c2d JK |
925 | return 0; |
926 | } | |
927 | ||
a7de6086 | 928 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) |
59b802e5 | 929 | { |
b439b103 | 930 | struct inode *inode = file_inode(iocb->ki_filp); |
5b8db7fa | 931 | struct f2fs_map_blocks map; |
d6d478a1 | 932 | int flag; |
a7de6086 | 933 | int err = 0; |
d6d478a1 | 934 | bool direct_io = iocb->ki_flags & IOCB_DIRECT; |
59b802e5 | 935 | |
71ad682c | 936 | /* convert inline data for Direct I/O*/ |
d6d478a1 | 937 | if (direct_io) { |
71ad682c WG |
938 | err = f2fs_convert_inline_inode(inode); |
939 | if (err) | |
940 | return err; | |
941 | } | |
942 | ||
f9d6d059 CY |
943 | if (direct_io && allow_outplace_dio(inode, iocb, from)) |
944 | return 0; | |
945 | ||
dc91de78 JK |
946 | if (is_inode_flag_set(inode, FI_NO_PREALLOC)) |
947 | return 0; | |
948 | ||
0080c507 | 949 | map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); |
dfd02e4d CY |
950 | map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); |
951 | if (map.m_len > map.m_lblk) | |
952 | map.m_len -= map.m_lblk; | |
953 | else | |
954 | map.m_len = 0; | |
955 | ||
da85985c | 956 | map.m_next_pgofs = NULL; |
c4020b2d | 957 | map.m_next_extent = NULL; |
d5097be5 | 958 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 959 | map.m_may_create = true; |
2a340760 | 960 | |
d6d478a1 | 961 | if (direct_io) { |
4d57b86d | 962 | map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); |
f847c699 | 963 | flag = f2fs_force_buffered_io(inode, iocb, from) ? |
d6d478a1 CY |
964 | F2FS_GET_BLOCK_PRE_AIO : |
965 | F2FS_GET_BLOCK_PRE_DIO; | |
966 | goto map_blocks; | |
d5097be5 | 967 | } |
f2470371 | 968 | if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { |
a7de6086 JK |
969 | err = f2fs_convert_inline_inode(inode); |
970 | if (err) | |
971 | return err; | |
b439b103 | 972 | } |
d6d478a1 | 973 | if (f2fs_has_inline_data(inode)) |
25006645 | 974 | return err; |
d6d478a1 CY |
975 | |
976 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
977 | ||
978 | map_blocks: | |
979 | err = f2fs_map_blocks(inode, &map, 1, flag); | |
980 | if (map.m_len > 0 && err == -ENOSPC) { | |
981 | if (!direct_io) | |
982 | set_inode_flag(inode, FI_NO_PREALLOC); | |
983 | err = 0; | |
25006645 | 984 | } |
a7de6086 | 985 | return err; |
59b802e5 JK |
986 | } |
987 | ||
39a86958 | 988 | void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
989 | { |
990 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
991 | if (lock) | |
992 | down_read(&sbi->node_change); | |
993 | else | |
994 | up_read(&sbi->node_change); | |
995 | } else { | |
996 | if (lock) | |
997 | f2fs_lock_op(sbi); | |
998 | else | |
999 | f2fs_unlock_op(sbi); | |
1000 | } | |
1001 | } | |
1002 | ||
0a8165d7 | 1003 | /* |
003a3e1d JK |
1004 | * f2fs_map_blocks() now supported readahead/bmap/rw direct_IO with |
1005 | * f2fs_map_blocks structure. | |
4f4124d0 CY |
1006 | * If original data blocks are allocated, then give them to blockdev. |
1007 | * Otherwise, | |
1008 | * a. preallocate requested block addresses | |
1009 | * b. do not use extent cache for better performance | |
1010 | * c. give the block addresses to blockdev | |
eb47b800 | 1011 | */ |
d323d005 | 1012 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1013 | int create, int flag) |
eb47b800 | 1014 | { |
003a3e1d | 1015 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1016 | struct dnode_of_data dn; |
f9811703 | 1017 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1018 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1019 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1020 | int err = 0, ofs = 1; |
46008c6d CY |
1021 | unsigned int ofs_in_node, last_ofs_in_node; |
1022 | blkcnt_t prealloc; | |
e15882b6 | 1023 | struct extent_info ei = {0,0,0}; |
7df3a431 | 1024 | block_t blkaddr; |
c4020b2d | 1025 | unsigned int start_pgofs; |
eb47b800 | 1026 | |
dfd02e4d CY |
1027 | if (!maxblocks) |
1028 | return 0; | |
1029 | ||
003a3e1d JK |
1030 | map->m_len = 0; |
1031 | map->m_flags = 0; | |
1032 | ||
1033 | /* it only supports block size == page size */ | |
1034 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1035 | end = pgofs + maxblocks; |
eb47b800 | 1036 | |
24b84912 | 1037 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
f4f0b677 JZ |
1038 | if (test_opt(sbi, LFS) && flag == F2FS_GET_BLOCK_DIO && |
1039 | map->m_may_create) | |
1040 | goto next_dnode; | |
1041 | ||
003a3e1d JK |
1042 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1043 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1044 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1045 | if (map->m_next_extent) |
1046 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1047 | |
1048 | /* for hardware encryption, but to avoid potential issue in future */ | |
1049 | if (flag == F2FS_GET_BLOCK_DIO) | |
1050 | f2fs_wait_on_block_writeback_range(inode, | |
1051 | map->m_pblk, map->m_len); | |
bfad7c2d | 1052 | goto out; |
a2e7d1bf | 1053 | } |
bfad7c2d | 1054 | |
4fe71e88 | 1055 | next_dnode: |
f9d6d059 | 1056 | if (map->m_may_create) |
59c9081b | 1057 | __do_map_lock(sbi, flag, true); |
eb47b800 JK |
1058 | |
1059 | /* When reading holes, we need its node page */ | |
1060 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1061 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1062 | if (err) { |
43473f96 CY |
1063 | if (flag == F2FS_GET_BLOCK_BMAP) |
1064 | map->m_pblk = 0; | |
da85985c | 1065 | if (err == -ENOENT) { |
bfad7c2d | 1066 | err = 0; |
da85985c CY |
1067 | if (map->m_next_pgofs) |
1068 | *map->m_next_pgofs = | |
4d57b86d | 1069 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1070 | if (map->m_next_extent) |
1071 | *map->m_next_extent = | |
4d57b86d | 1072 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1073 | } |
bfad7c2d | 1074 | goto unlock_out; |
848753aa | 1075 | } |
973163fc | 1076 | |
c4020b2d | 1077 | start_pgofs = pgofs; |
46008c6d | 1078 | prealloc = 0; |
230436b3 | 1079 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1080 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1081 | |
1082 | next_block: | |
7a2af766 | 1083 | blkaddr = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); |
4fe71e88 | 1084 | |
c9b60788 CY |
1085 | if (__is_valid_data_blkaddr(blkaddr) && |
1086 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
1087 | err = -EFAULT; | |
1088 | goto sync_out; | |
1089 | } | |
1090 | ||
f847c699 CY |
1091 | if (is_valid_data_blkaddr(sbi, blkaddr)) { |
1092 | /* use out-place-update for driect IO under LFS mode */ | |
f9d6d059 CY |
1093 | if (test_opt(sbi, LFS) && flag == F2FS_GET_BLOCK_DIO && |
1094 | map->m_may_create) { | |
f847c699 | 1095 | err = __allocate_data_block(&dn, map->m_seg_type); |
73c0a927 JZ |
1096 | if (!err) { |
1097 | blkaddr = dn.data_blkaddr; | |
f847c699 | 1098 | set_inode_flag(inode, FI_APPEND_WRITE); |
73c0a927 | 1099 | } |
f847c699 CY |
1100 | } |
1101 | } else { | |
973163fc | 1102 | if (create) { |
f9811703 CY |
1103 | if (unlikely(f2fs_cp_error(sbi))) { |
1104 | err = -EIO; | |
4fe71e88 | 1105 | goto sync_out; |
f9811703 | 1106 | } |
24b84912 | 1107 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1108 | if (blkaddr == NULL_ADDR) { |
1109 | prealloc++; | |
1110 | last_ofs_in_node = dn.ofs_in_node; | |
1111 | } | |
24b84912 | 1112 | } else { |
0a4daae5 JK |
1113 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1114 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1115 | err = __allocate_data_block(&dn, |
1116 | map->m_seg_type); | |
6f2d8ed6 | 1117 | if (!err) |
91942321 | 1118 | set_inode_flag(inode, FI_APPEND_WRITE); |
24b84912 | 1119 | } |
973163fc | 1120 | if (err) |
4fe71e88 | 1121 | goto sync_out; |
3f2be043 | 1122 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1123 | blkaddr = dn.data_blkaddr; |
973163fc | 1124 | } else { |
43473f96 CY |
1125 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1126 | map->m_pblk = 0; | |
1127 | goto sync_out; | |
1128 | } | |
c4020b2d CY |
1129 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1130 | goto sync_out; | |
da85985c CY |
1131 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1132 | blkaddr == NULL_ADDR) { | |
1133 | if (map->m_next_pgofs) | |
1134 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1135 | goto sync_out; |
da85985c | 1136 | } |
f3d98e74 CY |
1137 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1138 | /* for defragment case */ | |
1139 | if (map->m_next_pgofs) | |
1140 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1141 | goto sync_out; |
f3d98e74 | 1142 | } |
e2b4e2bc | 1143 | } |
e2b4e2bc | 1144 | } |
eb47b800 | 1145 | |
46008c6d CY |
1146 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1147 | goto skip; | |
1148 | ||
4fe71e88 CY |
1149 | if (map->m_len == 0) { |
1150 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1151 | if (blkaddr == NEW_ADDR) | |
1152 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1153 | map->m_flags |= F2FS_MAP_MAPPED; | |
1154 | ||
1155 | map->m_pblk = blkaddr; | |
1156 | map->m_len = 1; | |
1157 | } else if ((map->m_pblk != NEW_ADDR && | |
1158 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1159 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1160 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
4fe71e88 CY |
1161 | ofs++; |
1162 | map->m_len++; | |
1163 | } else { | |
1164 | goto sync_out; | |
1165 | } | |
bfad7c2d | 1166 | |
46008c6d | 1167 | skip: |
bfad7c2d JK |
1168 | dn.ofs_in_node++; |
1169 | pgofs++; | |
1170 | ||
46008c6d CY |
1171 | /* preallocate blocks in batch for one dnode page */ |
1172 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1173 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1174 | |
46008c6d | 1175 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1176 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1177 | if (err) |
1178 | goto sync_out; | |
bfad7c2d | 1179 | |
46008c6d CY |
1180 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1181 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1182 | err = -ENOSPC; | |
1183 | goto sync_out; | |
3104af35 | 1184 | } |
46008c6d CY |
1185 | dn.ofs_in_node = end_offset; |
1186 | } | |
1187 | ||
1188 | if (pgofs >= end) | |
1189 | goto sync_out; | |
1190 | else if (dn.ofs_in_node < end_offset) | |
1191 | goto next_block; | |
1192 | ||
c4020b2d CY |
1193 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1194 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1195 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1196 | ||
1197 | f2fs_update_extent_cache_range(&dn, | |
1198 | start_pgofs, map->m_pblk + ofs, | |
1199 | map->m_len - ofs); | |
1200 | } | |
1201 | } | |
1202 | ||
46008c6d CY |
1203 | f2fs_put_dnode(&dn); |
1204 | ||
f9d6d059 | 1205 | if (map->m_may_create) { |
59c9081b | 1206 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1207 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1208 | } |
46008c6d | 1209 | goto next_dnode; |
7df3a431 | 1210 | |
bfad7c2d | 1211 | sync_out: |
1e78e8bd ST |
1212 | |
1213 | /* for hardware encryption, but to avoid potential issue in future */ | |
1214 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) | |
1215 | f2fs_wait_on_block_writeback_range(inode, | |
1216 | map->m_pblk, map->m_len); | |
1217 | ||
c4020b2d CY |
1218 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1219 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1220 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1221 | ||
1222 | f2fs_update_extent_cache_range(&dn, | |
1223 | start_pgofs, map->m_pblk + ofs, | |
1224 | map->m_len - ofs); | |
1225 | } | |
1226 | if (map->m_next_extent) | |
1227 | *map->m_next_extent = pgofs + 1; | |
1228 | } | |
eb47b800 | 1229 | f2fs_put_dnode(&dn); |
bfad7c2d | 1230 | unlock_out: |
f9d6d059 | 1231 | if (map->m_may_create) { |
59c9081b | 1232 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1233 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1234 | } |
bfad7c2d | 1235 | out: |
003a3e1d | 1236 | trace_f2fs_map_blocks(inode, map, err); |
bfad7c2d | 1237 | return err; |
eb47b800 JK |
1238 | } |
1239 | ||
b91050a8 HL |
1240 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1241 | { | |
1242 | struct f2fs_map_blocks map; | |
1243 | block_t last_lblk; | |
1244 | int err; | |
1245 | ||
1246 | if (pos + len > i_size_read(inode)) | |
1247 | return false; | |
1248 | ||
1249 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1250 | map.m_next_pgofs = NULL; | |
1251 | map.m_next_extent = NULL; | |
1252 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1253 | map.m_may_create = false; |
b91050a8 HL |
1254 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1255 | ||
1256 | while (map.m_lblk < last_lblk) { | |
1257 | map.m_len = last_lblk - map.m_lblk; | |
1258 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1259 | if (err || map.m_len == 0) | |
1260 | return false; | |
1261 | map.m_lblk += map.m_len; | |
1262 | } | |
1263 | return true; | |
1264 | } | |
1265 | ||
003a3e1d | 1266 | static int __get_data_block(struct inode *inode, sector_t iblock, |
da85985c | 1267 | struct buffer_head *bh, int create, int flag, |
f9d6d059 | 1268 | pgoff_t *next_pgofs, int seg_type, bool may_write) |
003a3e1d JK |
1269 | { |
1270 | struct f2fs_map_blocks map; | |
a7de6086 | 1271 | int err; |
003a3e1d JK |
1272 | |
1273 | map.m_lblk = iblock; | |
1274 | map.m_len = bh->b_size >> inode->i_blkbits; | |
da85985c | 1275 | map.m_next_pgofs = next_pgofs; |
c4020b2d | 1276 | map.m_next_extent = NULL; |
d5097be5 | 1277 | map.m_seg_type = seg_type; |
f9d6d059 | 1278 | map.m_may_create = may_write; |
003a3e1d | 1279 | |
a7de6086 JK |
1280 | err = f2fs_map_blocks(inode, &map, create, flag); |
1281 | if (!err) { | |
003a3e1d JK |
1282 | map_bh(bh, inode->i_sb, map.m_pblk); |
1283 | bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; | |
b86e3307 | 1284 | bh->b_size = (u64)map.m_len << inode->i_blkbits; |
003a3e1d | 1285 | } |
a7de6086 | 1286 | return err; |
003a3e1d JK |
1287 | } |
1288 | ||
ccfb3000 | 1289 | static int get_data_block(struct inode *inode, sector_t iblock, |
da85985c CY |
1290 | struct buffer_head *bh_result, int create, int flag, |
1291 | pgoff_t *next_pgofs) | |
e2b4e2bc | 1292 | { |
da85985c | 1293 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1294 | flag, next_pgofs, |
f9d6d059 CY |
1295 | NO_CHECK_TYPE, create); |
1296 | } | |
1297 | ||
1298 | static int get_data_block_dio_write(struct inode *inode, sector_t iblock, | |
1299 | struct buffer_head *bh_result, int create) | |
1300 | { | |
1301 | return __get_data_block(inode, iblock, bh_result, create, | |
1302 | F2FS_GET_BLOCK_DIO, NULL, | |
1303 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1304 | true); | |
e2b4e2bc CY |
1305 | } |
1306 | ||
1307 | static int get_data_block_dio(struct inode *inode, sector_t iblock, | |
ccfb3000 JK |
1308 | struct buffer_head *bh_result, int create) |
1309 | { | |
e2b4e2bc | 1310 | return __get_data_block(inode, iblock, bh_result, create, |
f9d6d059 CY |
1311 | F2FS_GET_BLOCK_DIO, NULL, |
1312 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1313 | false); | |
ccfb3000 JK |
1314 | } |
1315 | ||
e2b4e2bc | 1316 | static int get_data_block_bmap(struct inode *inode, sector_t iblock, |
ccfb3000 JK |
1317 | struct buffer_head *bh_result, int create) |
1318 | { | |
179448bf | 1319 | /* Block number less than F2FS MAX BLOCKS */ |
e0afc4d6 | 1320 | if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks)) |
179448bf YH |
1321 | return -EFBIG; |
1322 | ||
e2b4e2bc | 1323 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1324 | F2FS_GET_BLOCK_BMAP, NULL, |
f9d6d059 | 1325 | NO_CHECK_TYPE, create); |
ccfb3000 JK |
1326 | } |
1327 | ||
7f63eb77 JK |
1328 | static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) |
1329 | { | |
1330 | return (offset >> inode->i_blkbits); | |
1331 | } | |
1332 | ||
1333 | static inline loff_t blk_to_logical(struct inode *inode, sector_t blk) | |
1334 | { | |
1335 | return (blk << inode->i_blkbits); | |
1336 | } | |
1337 | ||
442a9dbd CY |
1338 | static int f2fs_xattr_fiemap(struct inode *inode, |
1339 | struct fiemap_extent_info *fieinfo) | |
1340 | { | |
1341 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1342 | struct page *page; | |
1343 | struct node_info ni; | |
1344 | __u64 phys = 0, len; | |
1345 | __u32 flags; | |
1346 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1347 | int err = 0; | |
1348 | ||
1349 | if (f2fs_has_inline_xattr(inode)) { | |
1350 | int offset; | |
1351 | ||
1352 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1353 | inode->i_ino, false); | |
1354 | if (!page) | |
1355 | return -ENOMEM; | |
1356 | ||
7735730d CY |
1357 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1358 | if (err) { | |
1359 | f2fs_put_page(page, 1); | |
1360 | return err; | |
1361 | } | |
442a9dbd CY |
1362 | |
1363 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1364 | offset = offsetof(struct f2fs_inode, i_addr) + | |
1365 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1366 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1367 | |
1368 | phys += offset; | |
1369 | len = inline_xattr_size(inode); | |
1370 | ||
1371 | f2fs_put_page(page, 1); | |
1372 | ||
1373 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1374 | ||
1375 | if (!xnid) | |
1376 | flags |= FIEMAP_EXTENT_LAST; | |
1377 | ||
1378 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1379 | if (err || err == 1) | |
1380 | return err; | |
1381 | } | |
1382 | ||
1383 | if (xnid) { | |
1384 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1385 | if (!page) | |
1386 | return -ENOMEM; | |
1387 | ||
7735730d CY |
1388 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1389 | if (err) { | |
1390 | f2fs_put_page(page, 1); | |
1391 | return err; | |
1392 | } | |
442a9dbd CY |
1393 | |
1394 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1395 | len = inode->i_sb->s_blocksize; | |
1396 | ||
1397 | f2fs_put_page(page, 1); | |
1398 | ||
1399 | flags = FIEMAP_EXTENT_LAST; | |
1400 | } | |
1401 | ||
1402 | if (phys) | |
1403 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1404 | ||
1405 | return (err < 0 ? err : 0); | |
1406 | } | |
1407 | ||
9ab70134 JK |
1408 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1409 | u64 start, u64 len) | |
1410 | { | |
7f63eb77 JK |
1411 | struct buffer_head map_bh; |
1412 | sector_t start_blk, last_blk; | |
da85985c | 1413 | pgoff_t next_pgofs; |
7f63eb77 JK |
1414 | u64 logical = 0, phys = 0, size = 0; |
1415 | u32 flags = 0; | |
7f63eb77 JK |
1416 | int ret = 0; |
1417 | ||
c4020b2d CY |
1418 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1419 | ret = f2fs_precache_extents(inode); | |
1420 | if (ret) | |
1421 | return ret; | |
1422 | } | |
1423 | ||
442a9dbd | 1424 | ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1425 | if (ret) |
1426 | return ret; | |
1427 | ||
f1b43d4c CY |
1428 | inode_lock(inode); |
1429 | ||
442a9dbd CY |
1430 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1431 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1432 | goto out; | |
1433 | } | |
1434 | ||
67f8cf3c JK |
1435 | if (f2fs_has_inline_data(inode)) { |
1436 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); | |
1437 | if (ret != -EAGAIN) | |
f1b43d4c | 1438 | goto out; |
67f8cf3c JK |
1439 | } |
1440 | ||
7f63eb77 JK |
1441 | if (logical_to_blk(inode, len) == 0) |
1442 | len = blk_to_logical(inode, 1); | |
1443 | ||
1444 | start_blk = logical_to_blk(inode, start); | |
1445 | last_blk = logical_to_blk(inode, start + len - 1); | |
9a950d52 | 1446 | |
7f63eb77 JK |
1447 | next: |
1448 | memset(&map_bh, 0, sizeof(struct buffer_head)); | |
1449 | map_bh.b_size = len; | |
1450 | ||
e2b4e2bc | 1451 | ret = get_data_block(inode, start_blk, &map_bh, 0, |
da85985c | 1452 | F2FS_GET_BLOCK_FIEMAP, &next_pgofs); |
7f63eb77 JK |
1453 | if (ret) |
1454 | goto out; | |
1455 | ||
1456 | /* HOLE */ | |
1457 | if (!buffer_mapped(&map_bh)) { | |
da85985c | 1458 | start_blk = next_pgofs; |
58736fa6 CY |
1459 | |
1460 | if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, | |
1461 | F2FS_I_SB(inode)->max_file_blocks)) | |
9a950d52 | 1462 | goto prep_next; |
58736fa6 | 1463 | |
9a950d52 FL |
1464 | flags |= FIEMAP_EXTENT_LAST; |
1465 | } | |
7f63eb77 | 1466 | |
da5af127 CY |
1467 | if (size) { |
1468 | if (f2fs_encrypted_inode(inode)) | |
1469 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; | |
1470 | ||
9a950d52 FL |
1471 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1472 | phys, size, flags); | |
da5af127 | 1473 | } |
7f63eb77 | 1474 | |
9a950d52 FL |
1475 | if (start_blk > last_blk || ret) |
1476 | goto out; | |
7f63eb77 | 1477 | |
9a950d52 FL |
1478 | logical = blk_to_logical(inode, start_blk); |
1479 | phys = blk_to_logical(inode, map_bh.b_blocknr); | |
1480 | size = map_bh.b_size; | |
1481 | flags = 0; | |
1482 | if (buffer_unwritten(&map_bh)) | |
1483 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
7f63eb77 | 1484 | |
9a950d52 | 1485 | start_blk += logical_to_blk(inode, size); |
7f63eb77 | 1486 | |
9a950d52 | 1487 | prep_next: |
7f63eb77 JK |
1488 | cond_resched(); |
1489 | if (fatal_signal_pending(current)) | |
1490 | ret = -EINTR; | |
1491 | else | |
1492 | goto next; | |
1493 | out: | |
1494 | if (ret == 1) | |
1495 | ret = 0; | |
1496 | ||
5955102c | 1497 | inode_unlock(inode); |
7f63eb77 | 1498 | return ret; |
9ab70134 JK |
1499 | } |
1500 | ||
f1e88660 JK |
1501 | /* |
1502 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
1503 | * Major change was from block_size == page_size in f2fs by default. | |
e2e59414 JK |
1504 | * |
1505 | * Note that the aops->readpages() function is ONLY used for read-ahead. If | |
1506 | * this function ever deviates from doing just read-ahead, it should either | |
1507 | * use ->readpage() or do the necessary surgery to decouple ->readpages() | |
1508 | * from read-ahead. | |
f1e88660 JK |
1509 | */ |
1510 | static int f2fs_mpage_readpages(struct address_space *mapping, | |
1511 | struct list_head *pages, struct page *page, | |
e2e59414 | 1512 | unsigned nr_pages, bool is_readahead) |
f1e88660 JK |
1513 | { |
1514 | struct bio *bio = NULL; | |
f1e88660 JK |
1515 | sector_t last_block_in_bio = 0; |
1516 | struct inode *inode = mapping->host; | |
1517 | const unsigned blkbits = inode->i_blkbits; | |
1518 | const unsigned blocksize = 1 << blkbits; | |
1519 | sector_t block_in_file; | |
1520 | sector_t last_block; | |
1521 | sector_t last_block_in_file; | |
1522 | sector_t block_nr; | |
f1e88660 JK |
1523 | struct f2fs_map_blocks map; |
1524 | ||
1525 | map.m_pblk = 0; | |
1526 | map.m_lblk = 0; | |
1527 | map.m_len = 0; | |
1528 | map.m_flags = 0; | |
da85985c | 1529 | map.m_next_pgofs = NULL; |
c4020b2d | 1530 | map.m_next_extent = NULL; |
d5097be5 | 1531 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 1532 | map.m_may_create = false; |
f1e88660 | 1533 | |
736c0a74 | 1534 | for (; nr_pages; nr_pages--) { |
f1e88660 | 1535 | if (pages) { |
939afa94 | 1536 | page = list_last_entry(pages, struct page, lru); |
a83d50bc KM |
1537 | |
1538 | prefetchw(&page->flags); | |
f1e88660 JK |
1539 | list_del(&page->lru); |
1540 | if (add_to_page_cache_lru(page, mapping, | |
8a5c743e MH |
1541 | page->index, |
1542 | readahead_gfp_mask(mapping))) | |
f1e88660 JK |
1543 | goto next_page; |
1544 | } | |
1545 | ||
1546 | block_in_file = (sector_t)page->index; | |
1547 | last_block = block_in_file + nr_pages; | |
1548 | last_block_in_file = (i_size_read(inode) + blocksize - 1) >> | |
1549 | blkbits; | |
1550 | if (last_block > last_block_in_file) | |
1551 | last_block = last_block_in_file; | |
1552 | ||
1553 | /* | |
1554 | * Map blocks using the previous result first. | |
1555 | */ | |
1556 | if ((map.m_flags & F2FS_MAP_MAPPED) && | |
1557 | block_in_file > map.m_lblk && | |
1558 | block_in_file < (map.m_lblk + map.m_len)) | |
1559 | goto got_it; | |
1560 | ||
1561 | /* | |
1562 | * Then do more f2fs_map_blocks() calls until we are | |
1563 | * done with this page. | |
1564 | */ | |
1565 | map.m_flags = 0; | |
1566 | ||
1567 | if (block_in_file < last_block) { | |
1568 | map.m_lblk = block_in_file; | |
1569 | map.m_len = last_block - block_in_file; | |
1570 | ||
46c9e141 | 1571 | if (f2fs_map_blocks(inode, &map, 0, |
f2220c7f | 1572 | F2FS_GET_BLOCK_DEFAULT)) |
f1e88660 JK |
1573 | goto set_error_page; |
1574 | } | |
1575 | got_it: | |
1576 | if ((map.m_flags & F2FS_MAP_MAPPED)) { | |
1577 | block_nr = map.m_pblk + block_in_file - map.m_lblk; | |
1578 | SetPageMappedToDisk(page); | |
1579 | ||
1580 | if (!PageUptodate(page) && !cleancache_get_page(page)) { | |
1581 | SetPageUptodate(page); | |
1582 | goto confused; | |
1583 | } | |
c9b60788 CY |
1584 | |
1585 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
1586 | DATA_GENERIC)) | |
1587 | goto set_error_page; | |
f1e88660 | 1588 | } else { |
09cbfeaf | 1589 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1590 | if (!PageUptodate(page)) |
1591 | SetPageUptodate(page); | |
f1e88660 JK |
1592 | unlock_page(page); |
1593 | goto next_page; | |
1594 | } | |
1595 | ||
1596 | /* | |
1597 | * This page will go to BIO. Do we need to send this | |
1598 | * BIO off first? | |
1599 | */ | |
3c62be17 JK |
1600 | if (bio && (last_block_in_bio != block_nr - 1 || |
1601 | !__same_bdev(F2FS_I_SB(inode), block_nr, bio))) { | |
f1e88660 | 1602 | submit_and_realloc: |
4fc29c1a | 1603 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1604 | bio = NULL; |
1605 | } | |
1606 | if (bio == NULL) { | |
e2e59414 JK |
1607 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, |
1608 | is_readahead ? REQ_RAHEAD : 0); | |
1d353eb7 JK |
1609 | if (IS_ERR(bio)) { |
1610 | bio = NULL; | |
f1e88660 | 1611 | goto set_error_page; |
4375a336 | 1612 | } |
f1e88660 JK |
1613 | } |
1614 | ||
0ded69f6 JK |
1615 | /* |
1616 | * If the page is under writeback, we need to wait for | |
1617 | * its completion to see the correct decrypted data. | |
1618 | */ | |
1619 | f2fs_wait_on_block_writeback(inode, block_nr); | |
1620 | ||
f1e88660 JK |
1621 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
1622 | goto submit_and_realloc; | |
1623 | ||
5f9abab4 | 1624 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); |
fb7d70db | 1625 | ClearPageError(page); |
f1e88660 JK |
1626 | last_block_in_bio = block_nr; |
1627 | goto next_page; | |
1628 | set_error_page: | |
1629 | SetPageError(page); | |
09cbfeaf | 1630 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 JK |
1631 | unlock_page(page); |
1632 | goto next_page; | |
1633 | confused: | |
1634 | if (bio) { | |
4fc29c1a | 1635 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1636 | bio = NULL; |
1637 | } | |
1638 | unlock_page(page); | |
1639 | next_page: | |
1640 | if (pages) | |
09cbfeaf | 1641 | put_page(page); |
f1e88660 JK |
1642 | } |
1643 | BUG_ON(pages && !list_empty(pages)); | |
1644 | if (bio) | |
4fc29c1a | 1645 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1646 | return 0; |
1647 | } | |
1648 | ||
eb47b800 JK |
1649 | static int f2fs_read_data_page(struct file *file, struct page *page) |
1650 | { | |
9ffe0fb5 | 1651 | struct inode *inode = page->mapping->host; |
b3d208f9 | 1652 | int ret = -EAGAIN; |
9ffe0fb5 | 1653 | |
c20e89cd CY |
1654 | trace_f2fs_readpage(page, DATA); |
1655 | ||
e1c42045 | 1656 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
1657 | if (f2fs_has_inline_data(inode)) |
1658 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 1659 | if (ret == -EAGAIN) |
e2e59414 | 1660 | ret = f2fs_mpage_readpages(page->mapping, NULL, page, 1, false); |
9ffe0fb5 | 1661 | return ret; |
eb47b800 JK |
1662 | } |
1663 | ||
1664 | static int f2fs_read_data_pages(struct file *file, | |
1665 | struct address_space *mapping, | |
1666 | struct list_head *pages, unsigned nr_pages) | |
1667 | { | |
71cb4aff | 1668 | struct inode *inode = mapping->host; |
939afa94 | 1669 | struct page *page = list_last_entry(pages, struct page, lru); |
b8c29400 CY |
1670 | |
1671 | trace_f2fs_readpages(inode, page, nr_pages); | |
9ffe0fb5 HL |
1672 | |
1673 | /* If the file has inline data, skip readpages */ | |
1674 | if (f2fs_has_inline_data(inode)) | |
1675 | return 0; | |
1676 | ||
e2e59414 | 1677 | return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true); |
eb47b800 JK |
1678 | } |
1679 | ||
7eab0c0d HP |
1680 | static int encrypt_one_page(struct f2fs_io_info *fio) |
1681 | { | |
1682 | struct inode *inode = fio->page->mapping->host; | |
6aa58d8a | 1683 | struct page *mpage; |
7eab0c0d HP |
1684 | gfp_t gfp_flags = GFP_NOFS; |
1685 | ||
1958593e | 1686 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
1687 | return 0; |
1688 | ||
6dbb1796 | 1689 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 1690 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d HP |
1691 | |
1692 | retry_encrypt: | |
1693 | fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page, | |
1694 | PAGE_SIZE, 0, fio->page->index, gfp_flags); | |
6aa58d8a CY |
1695 | if (IS_ERR(fio->encrypted_page)) { |
1696 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
1697 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
1698 | f2fs_flush_merged_writes(fio->sbi); | |
1699 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
1700 | gfp_flags |= __GFP_NOFAIL; | |
1701 | goto retry_encrypt; | |
1702 | } | |
1703 | return PTR_ERR(fio->encrypted_page); | |
1704 | } | |
7eab0c0d | 1705 | |
6aa58d8a CY |
1706 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
1707 | if (mpage) { | |
1708 | if (PageUptodate(mpage)) | |
1709 | memcpy(page_address(mpage), | |
1710 | page_address(fio->encrypted_page), PAGE_SIZE); | |
1711 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 1712 | } |
6aa58d8a | 1713 | return 0; |
7eab0c0d HP |
1714 | } |
1715 | ||
bb9e3bb8 CY |
1716 | static inline bool check_inplace_update_policy(struct inode *inode, |
1717 | struct f2fs_io_info *fio) | |
7eab0c0d | 1718 | { |
bb9e3bb8 CY |
1719 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1720 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 1721 | |
bb9e3bb8 CY |
1722 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
1723 | return true; | |
4d57b86d | 1724 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
1725 | return true; |
1726 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
1727 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
1728 | return true; | |
4d57b86d | 1729 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
1730 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
1731 | return true; | |
1732 | ||
1733 | /* | |
1734 | * IPU for rewrite async pages | |
1735 | */ | |
1736 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
1737 | fio && fio->op == REQ_OP_WRITE && | |
1738 | !(fio->op_flags & REQ_SYNC) && | |
1739 | !f2fs_encrypted_inode(inode)) | |
1740 | return true; | |
1741 | ||
1742 | /* this is only set during fdatasync */ | |
1743 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
1744 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
1745 | return true; | |
1746 | ||
4354994f DR |
1747 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1748 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1749 | return true; | |
1750 | ||
bb9e3bb8 CY |
1751 | return false; |
1752 | } | |
1753 | ||
4d57b86d | 1754 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 1755 | { |
1ad71a27 JK |
1756 | if (f2fs_is_pinned_file(inode)) |
1757 | return true; | |
bb9e3bb8 CY |
1758 | |
1759 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
1760 | if (file_is_cold(inode)) | |
1761 | return true; | |
1762 | ||
1763 | return check_inplace_update_policy(inode, fio); | |
1764 | } | |
1765 | ||
4d57b86d | 1766 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
1767 | { |
1768 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1769 | ||
1770 | if (test_opt(sbi, LFS)) | |
1771 | return true; | |
1772 | if (S_ISDIR(inode->i_mode)) | |
1773 | return true; | |
af033b2a CY |
1774 | if (IS_NOQUOTA(inode)) |
1775 | return true; | |
bb9e3bb8 CY |
1776 | if (f2fs_is_atomic_file(inode)) |
1777 | return true; | |
1778 | if (fio) { | |
1779 | if (is_cold_data(fio->page)) | |
1780 | return true; | |
1781 | if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) | |
1782 | return true; | |
4354994f DR |
1783 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1784 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1785 | return true; | |
bb9e3bb8 CY |
1786 | } |
1787 | return false; | |
1788 | } | |
1789 | ||
7eab0c0d HP |
1790 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
1791 | { | |
1792 | struct inode *inode = fio->page->mapping->host; | |
1793 | ||
4d57b86d | 1794 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
1795 | return false; |
1796 | ||
4d57b86d | 1797 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
1798 | } |
1799 | ||
4d57b86d | 1800 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 1801 | { |
05ca3632 | 1802 | struct page *page = fio->page; |
eb47b800 | 1803 | struct inode *inode = page->mapping->host; |
eb47b800 | 1804 | struct dnode_of_data dn; |
e959c8f5 | 1805 | struct extent_info ei = {0,0,0}; |
7735730d | 1806 | struct node_info ni; |
e959c8f5 | 1807 | bool ipu_force = false; |
eb47b800 JK |
1808 | int err = 0; |
1809 | ||
1810 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
1811 | if (need_inplace_update(fio) && |
1812 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
1813 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 1814 | |
c9b60788 CY |
1815 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
1816 | DATA_GENERIC)) | |
1817 | return -EFAULT; | |
1818 | ||
1819 | ipu_force = true; | |
1820 | fio->need_lock = LOCK_DONE; | |
1821 | goto got_it; | |
e959c8f5 | 1822 | } |
279d6df2 | 1823 | |
d29460e5 JK |
1824 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
1825 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
1826 | return -EAGAIN; | |
279d6df2 | 1827 | |
4d57b86d | 1828 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 1829 | if (err) |
279d6df2 | 1830 | goto out; |
eb47b800 | 1831 | |
28bc106b | 1832 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
1833 | |
1834 | /* This page is already truncated */ | |
7a9d7548 | 1835 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 1836 | ClearPageUptodate(page); |
2baf0781 | 1837 | clear_cold_data(page); |
eb47b800 | 1838 | goto out_writepage; |
2bca1e23 | 1839 | } |
e959c8f5 | 1840 | got_it: |
c9b60788 CY |
1841 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
1842 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
1843 | DATA_GENERIC)) { | |
1844 | err = -EFAULT; | |
1845 | goto out_writepage; | |
1846 | } | |
eb47b800 JK |
1847 | /* |
1848 | * If current allocation needs SSR, | |
1849 | * it had better in-place writes for updated data. | |
1850 | */ | |
e1da7872 | 1851 | if (ipu_force || (is_valid_data_blkaddr(fio->sbi, fio->old_blkaddr) && |
7b525dd0 | 1852 | need_inplace_update(fio))) { |
cc15620b JK |
1853 | err = encrypt_one_page(fio); |
1854 | if (err) | |
1855 | goto out_writepage; | |
1856 | ||
1857 | set_page_writeback(page); | |
17c50035 | 1858 | ClearPageError(page); |
279d6df2 | 1859 | f2fs_put_dnode(&dn); |
cc15620b | 1860 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 1861 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 1862 | err = f2fs_inplace_write_data(fio); |
2062e0c3 SY |
1863 | if (err && PageWriteback(page)) |
1864 | end_page_writeback(page); | |
7eab0c0d | 1865 | trace_f2fs_do_write_data_page(fio->page, IPU); |
91942321 | 1866 | set_inode_flag(inode, FI_UPDATE_WRITE); |
279d6df2 | 1867 | return err; |
eb47b800 | 1868 | } |
279d6df2 | 1869 | |
cc15620b JK |
1870 | if (fio->need_lock == LOCK_RETRY) { |
1871 | if (!f2fs_trylock_op(fio->sbi)) { | |
1872 | err = -EAGAIN; | |
1873 | goto out_writepage; | |
1874 | } | |
1875 | fio->need_lock = LOCK_REQ; | |
1876 | } | |
1877 | ||
7735730d CY |
1878 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
1879 | if (err) | |
1880 | goto out_writepage; | |
1881 | ||
1882 | fio->version = ni.version; | |
1883 | ||
cc15620b JK |
1884 | err = encrypt_one_page(fio); |
1885 | if (err) | |
1886 | goto out_writepage; | |
1887 | ||
1888 | set_page_writeback(page); | |
17c50035 | 1889 | ClearPageError(page); |
cc15620b | 1890 | |
279d6df2 | 1891 | /* LFS mode write path */ |
4d57b86d | 1892 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
1893 | trace_f2fs_do_write_data_page(page, OPU); |
1894 | set_inode_flag(inode, FI_APPEND_WRITE); | |
1895 | if (page->index == 0) | |
1896 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
1897 | out_writepage: |
1898 | f2fs_put_dnode(&dn); | |
279d6df2 | 1899 | out: |
cc15620b | 1900 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 1901 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
1902 | return err; |
1903 | } | |
1904 | ||
d68f735b | 1905 | static int __write_data_page(struct page *page, bool *submitted, |
b0af6d49 CY |
1906 | struct writeback_control *wbc, |
1907 | enum iostat_type io_type) | |
eb47b800 JK |
1908 | { |
1909 | struct inode *inode = page->mapping->host; | |
4081363f | 1910 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 JK |
1911 | loff_t i_size = i_size_read(inode); |
1912 | const pgoff_t end_index = ((unsigned long long) i_size) | |
09cbfeaf | 1913 | >> PAGE_SHIFT; |
26de9b11 | 1914 | loff_t psize = (page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 1915 | unsigned offset = 0; |
39936837 | 1916 | bool need_balance_fs = false; |
eb47b800 | 1917 | int err = 0; |
458e6197 | 1918 | struct f2fs_io_info fio = { |
05ca3632 | 1919 | .sbi = sbi, |
39d787be | 1920 | .ino = inode->i_ino, |
458e6197 | 1921 | .type = DATA, |
04d328de | 1922 | .op = REQ_OP_WRITE, |
7637241e | 1923 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 1924 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 1925 | .page = page, |
4375a336 | 1926 | .encrypted_page = NULL, |
d68f735b | 1927 | .submitted = false, |
cc15620b | 1928 | .need_lock = LOCK_RETRY, |
b0af6d49 | 1929 | .io_type = io_type, |
578c6478 | 1930 | .io_wbc = wbc, |
458e6197 | 1931 | }; |
eb47b800 | 1932 | |
ecda0de3 CY |
1933 | trace_f2fs_writepage(page, DATA); |
1934 | ||
db198ae0 CY |
1935 | /* we should bypass data pages to proceed the kworkder jobs */ |
1936 | if (unlikely(f2fs_cp_error(sbi))) { | |
1937 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
1938 | /* |
1939 | * don't drop any dirty dentry pages for keeping lastest | |
1940 | * directory structure. | |
1941 | */ | |
1942 | if (S_ISDIR(inode->i_mode)) | |
1943 | goto redirty_out; | |
db198ae0 CY |
1944 | goto out; |
1945 | } | |
1946 | ||
0771fcc7 CY |
1947 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
1948 | goto redirty_out; | |
1949 | ||
eb47b800 | 1950 | if (page->index < end_index) |
39936837 | 1951 | goto write; |
eb47b800 JK |
1952 | |
1953 | /* | |
1954 | * If the offset is out-of-range of file size, | |
1955 | * this page does not have to be written to disk. | |
1956 | */ | |
09cbfeaf | 1957 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 1958 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 1959 | goto out; |
eb47b800 | 1960 | |
09cbfeaf | 1961 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 1962 | write: |
1e84371f JK |
1963 | if (f2fs_is_drop_cache(inode)) |
1964 | goto out; | |
e6e5f561 JK |
1965 | /* we should not write 0'th page having journal header */ |
1966 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
1967 | (!wbc->for_reclaim && | |
4d57b86d | 1968 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 1969 | goto redirty_out; |
eb47b800 | 1970 | |
39936837 | 1971 | /* Dentry blocks are controlled by checkpoint */ |
eb47b800 | 1972 | if (S_ISDIR(inode->i_mode)) { |
cc15620b | 1973 | fio.need_lock = LOCK_DONE; |
4d57b86d | 1974 | err = f2fs_do_write_data_page(&fio); |
8618b881 JK |
1975 | goto done; |
1976 | } | |
9ffe0fb5 | 1977 | |
8618b881 | 1978 | if (!wbc->for_reclaim) |
39936837 | 1979 | need_balance_fs = true; |
7f3037a5 | 1980 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 1981 | goto redirty_out; |
ef095d19 JK |
1982 | else |
1983 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 1984 | |
b3d208f9 | 1985 | err = -EAGAIN; |
dd7b2333 | 1986 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 1987 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
1988 | if (!err) |
1989 | goto out; | |
1990 | } | |
279d6df2 | 1991 | |
cc15620b | 1992 | if (err == -EAGAIN) { |
4d57b86d | 1993 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
1994 | if (err == -EAGAIN) { |
1995 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 1996 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
1997 | } |
1998 | } | |
a0d00fad | 1999 | |
eb449797 CY |
2000 | if (err) { |
2001 | file_set_keep_isize(inode); | |
2002 | } else { | |
2003 | down_write(&F2FS_I(inode)->i_sem); | |
2004 | if (F2FS_I(inode)->last_disk_size < psize) | |
2005 | F2FS_I(inode)->last_disk_size = psize; | |
2006 | up_write(&F2FS_I(inode)->i_sem); | |
2007 | } | |
279d6df2 | 2008 | |
8618b881 JK |
2009 | done: |
2010 | if (err && err != -ENOENT) | |
2011 | goto redirty_out; | |
eb47b800 | 2012 | |
39936837 | 2013 | out: |
a7ffdbe2 | 2014 | inode_dec_dirty_pages(inode); |
2baf0781 | 2015 | if (err) { |
2bca1e23 | 2016 | ClearPageUptodate(page); |
2baf0781 CY |
2017 | clear_cold_data(page); |
2018 | } | |
0c3a5797 CY |
2019 | |
2020 | if (wbc->for_reclaim) { | |
bab475c5 | 2021 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2022 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2023 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2024 | submitted = NULL; |
0c3a5797 CY |
2025 | } |
2026 | ||
eb47b800 | 2027 | unlock_page(page); |
af033b2a | 2028 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode)) |
a7881893 | 2029 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2030 | |
d68f735b | 2031 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2032 | f2fs_submit_merged_write(sbi, DATA); |
d68f735b JK |
2033 | submitted = NULL; |
2034 | } | |
2035 | ||
2036 | if (submitted) | |
2037 | *submitted = fio.submitted; | |
0c3a5797 | 2038 | |
eb47b800 JK |
2039 | return 0; |
2040 | ||
eb47b800 | 2041 | redirty_out: |
76f60268 | 2042 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2043 | /* |
2044 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2045 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2046 | * file_write_and_wait_range() will see EIO error, which is critical | |
2047 | * to return value of fsync() followed by atomic_write failure to user. | |
2048 | */ | |
2049 | if (!err || wbc->for_reclaim) | |
0002b61b | 2050 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2051 | unlock_page(page); |
2052 | return err; | |
fa9150a8 NJ |
2053 | } |
2054 | ||
f566bae8 JK |
2055 | static int f2fs_write_data_page(struct page *page, |
2056 | struct writeback_control *wbc) | |
2057 | { | |
b0af6d49 | 2058 | return __write_data_page(page, NULL, wbc, FS_DATA_IO); |
f566bae8 JK |
2059 | } |
2060 | ||
8f46dcae CY |
2061 | /* |
2062 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2063 | * The major change is making write step of cold data page separately from | |
2064 | * warm/hot data page. | |
2065 | */ | |
2066 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2067 | struct writeback_control *wbc, |
2068 | enum iostat_type io_type) | |
8f46dcae CY |
2069 | { |
2070 | int ret = 0; | |
2071 | int done = 0; | |
2072 | struct pagevec pvec; | |
c29fd0c0 | 2073 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8f46dcae CY |
2074 | int nr_pages; |
2075 | pgoff_t uninitialized_var(writeback_index); | |
2076 | pgoff_t index; | |
2077 | pgoff_t end; /* Inclusive */ | |
2078 | pgoff_t done_index; | |
2079 | int cycled; | |
2080 | int range_whole = 0; | |
10bbd235 | 2081 | xa_mark_t tag; |
bab475c5 | 2082 | int nwritten = 0; |
8f46dcae | 2083 | |
86679820 | 2084 | pagevec_init(&pvec); |
46ae957f | 2085 | |
ef095d19 JK |
2086 | if (get_dirty_pages(mapping->host) <= |
2087 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2088 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2089 | else | |
2090 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2091 | ||
8f46dcae CY |
2092 | if (wbc->range_cyclic) { |
2093 | writeback_index = mapping->writeback_index; /* prev offset */ | |
2094 | index = writeback_index; | |
2095 | if (index == 0) | |
2096 | cycled = 1; | |
2097 | else | |
2098 | cycled = 0; | |
2099 | end = -1; | |
2100 | } else { | |
09cbfeaf KS |
2101 | index = wbc->range_start >> PAGE_SHIFT; |
2102 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2103 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2104 | range_whole = 1; | |
2105 | cycled = 1; /* ignore range_cyclic tests */ | |
2106 | } | |
2107 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2108 | tag = PAGECACHE_TAG_TOWRITE; | |
2109 | else | |
2110 | tag = PAGECACHE_TAG_DIRTY; | |
2111 | retry: | |
2112 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2113 | tag_pages_for_writeback(mapping, index, end); | |
2114 | done_index = index; | |
2115 | while (!done && (index <= end)) { | |
2116 | int i; | |
2117 | ||
69c4f35d | 2118 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2119 | tag); |
8f46dcae CY |
2120 | if (nr_pages == 0) |
2121 | break; | |
2122 | ||
2123 | for (i = 0; i < nr_pages; i++) { | |
2124 | struct page *page = pvec.pages[i]; | |
d68f735b | 2125 | bool submitted = false; |
8f46dcae | 2126 | |
f8de4331 | 2127 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2128 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2129 | wbc->sync_mode == WB_SYNC_NONE) { |
2130 | done = 1; | |
2131 | break; | |
2132 | } | |
2133 | ||
8f46dcae | 2134 | done_index = page->index; |
d29460e5 | 2135 | retry_write: |
8f46dcae CY |
2136 | lock_page(page); |
2137 | ||
2138 | if (unlikely(page->mapping != mapping)) { | |
2139 | continue_unlock: | |
2140 | unlock_page(page); | |
2141 | continue; | |
2142 | } | |
2143 | ||
2144 | if (!PageDirty(page)) { | |
2145 | /* someone wrote it for us */ | |
2146 | goto continue_unlock; | |
2147 | } | |
2148 | ||
8f46dcae CY |
2149 | if (PageWriteback(page)) { |
2150 | if (wbc->sync_mode != WB_SYNC_NONE) | |
fec1d657 | 2151 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 2152 | DATA, true, true); |
8f46dcae CY |
2153 | else |
2154 | goto continue_unlock; | |
2155 | } | |
2156 | ||
8f46dcae CY |
2157 | if (!clear_page_dirty_for_io(page)) |
2158 | goto continue_unlock; | |
2159 | ||
b0af6d49 | 2160 | ret = __write_data_page(page, &submitted, wbc, io_type); |
8f46dcae | 2161 | if (unlikely(ret)) { |
0002b61b CY |
2162 | /* |
2163 | * keep nr_to_write, since vfs uses this to | |
2164 | * get # of written pages. | |
2165 | */ | |
2166 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
2167 | unlock_page(page); | |
2168 | ret = 0; | |
2169 | continue; | |
d29460e5 JK |
2170 | } else if (ret == -EAGAIN) { |
2171 | ret = 0; | |
2172 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
2173 | cond_resched(); | |
2174 | congestion_wait(BLK_RW_ASYNC, | |
2175 | HZ/50); | |
2176 | goto retry_write; | |
2177 | } | |
2178 | continue; | |
0002b61b | 2179 | } |
b230e6ca JK |
2180 | done_index = page->index + 1; |
2181 | done = 1; | |
2182 | break; | |
d68f735b | 2183 | } else if (submitted) { |
bab475c5 | 2184 | nwritten++; |
8f46dcae CY |
2185 | } |
2186 | ||
f8de4331 | 2187 | if (--wbc->nr_to_write <= 0 && |
687de7f1 | 2188 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
2189 | done = 1; |
2190 | break; | |
2191 | } | |
2192 | } | |
2193 | pagevec_release(&pvec); | |
2194 | cond_resched(); | |
2195 | } | |
2196 | ||
8f46dcae CY |
2197 | if (!cycled && !done) { |
2198 | cycled = 1; | |
2199 | index = 0; | |
2200 | end = writeback_index - 1; | |
2201 | goto retry; | |
2202 | } | |
2203 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) | |
2204 | mapping->writeback_index = done_index; | |
2205 | ||
bab475c5 | 2206 | if (nwritten) |
b9109b0e | 2207 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 2208 | NULL, 0, DATA); |
6ca56ca4 | 2209 | |
8f46dcae CY |
2210 | return ret; |
2211 | } | |
2212 | ||
853137ce JK |
2213 | static inline bool __should_serialize_io(struct inode *inode, |
2214 | struct writeback_control *wbc) | |
2215 | { | |
2216 | if (!S_ISREG(inode->i_mode)) | |
2217 | return false; | |
af033b2a CY |
2218 | if (IS_NOQUOTA(inode)) |
2219 | return false; | |
853137ce JK |
2220 | if (wbc->sync_mode != WB_SYNC_ALL) |
2221 | return true; | |
2222 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
2223 | return true; | |
2224 | return false; | |
2225 | } | |
2226 | ||
fc99fe27 | 2227 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
2228 | struct writeback_control *wbc, |
2229 | enum iostat_type io_type) | |
eb47b800 JK |
2230 | { |
2231 | struct inode *inode = mapping->host; | |
4081363f | 2232 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 2233 | struct blk_plug plug; |
eb47b800 | 2234 | int ret; |
853137ce | 2235 | bool locked = false; |
eb47b800 | 2236 | |
cfb185a1 | 2237 | /* deal with chardevs and other special file */ |
2238 | if (!mapping->a_ops->writepage) | |
2239 | return 0; | |
2240 | ||
6a290544 CY |
2241 | /* skip writing if there is no dirty page in this inode */ |
2242 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
2243 | return 0; | |
2244 | ||
0771fcc7 CY |
2245 | /* during POR, we don't need to trigger writepage at all. */ |
2246 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
2247 | goto skip_write; | |
2248 | ||
af033b2a CY |
2249 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
2250 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 2251 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 2252 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
2253 | goto skip_write; |
2254 | ||
d323d005 | 2255 | /* skip writing during file defragment */ |
91942321 | 2256 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
2257 | goto skip_write; |
2258 | ||
d31c7c3f YH |
2259 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
2260 | ||
687de7f1 JK |
2261 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
2262 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
2263 | atomic_inc(&sbi->wb_sync_req[DATA]); |
2264 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
2265 | goto skip_write; |
2266 | ||
853137ce JK |
2267 | if (__should_serialize_io(inode, wbc)) { |
2268 | mutex_lock(&sbi->writepages); | |
2269 | locked = true; | |
2270 | } | |
2271 | ||
9dfa1baf | 2272 | blk_start_plug(&plug); |
b0af6d49 | 2273 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 2274 | blk_finish_plug(&plug); |
687de7f1 | 2275 | |
853137ce JK |
2276 | if (locked) |
2277 | mutex_unlock(&sbi->writepages); | |
2278 | ||
687de7f1 | 2279 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 2280 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
2281 | /* |
2282 | * if some pages were truncated, we cannot guarantee its mapping->host | |
2283 | * to detect pending bios. | |
2284 | */ | |
458e6197 | 2285 | |
4d57b86d | 2286 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 2287 | return ret; |
d3baf95d JK |
2288 | |
2289 | skip_write: | |
a7ffdbe2 | 2290 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 2291 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 2292 | return 0; |
eb47b800 JK |
2293 | } |
2294 | ||
b0af6d49 CY |
2295 | static int f2fs_write_data_pages(struct address_space *mapping, |
2296 | struct writeback_control *wbc) | |
2297 | { | |
2298 | struct inode *inode = mapping->host; | |
2299 | ||
2300 | return __f2fs_write_data_pages(mapping, wbc, | |
2301 | F2FS_I(inode)->cp_task == current ? | |
2302 | FS_CP_DATA_IO : FS_DATA_IO); | |
2303 | } | |
2304 | ||
3aab8f82 CY |
2305 | static void f2fs_write_failed(struct address_space *mapping, loff_t to) |
2306 | { | |
2307 | struct inode *inode = mapping->host; | |
819d9153 | 2308 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 2309 | |
819d9153 | 2310 | if (to > i_size) { |
a33c1502 | 2311 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 2312 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 2313 | |
819d9153 | 2314 | truncate_pagecache(inode, i_size); |
af033b2a | 2315 | f2fs_truncate_blocks(inode, i_size, true, true); |
a33c1502 | 2316 | |
5a3a2d83 | 2317 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 2318 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
2319 | } |
2320 | } | |
2321 | ||
2aadac08 JK |
2322 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
2323 | struct page *page, loff_t pos, unsigned len, | |
2324 | block_t *blk_addr, bool *node_changed) | |
2325 | { | |
2326 | struct inode *inode = page->mapping->host; | |
2327 | pgoff_t index = page->index; | |
2328 | struct dnode_of_data dn; | |
2329 | struct page *ipage; | |
b4d07a3e | 2330 | bool locked = false; |
e15882b6 | 2331 | struct extent_info ei = {0,0,0}; |
2aadac08 | 2332 | int err = 0; |
2866fb16 | 2333 | int flag; |
2aadac08 | 2334 | |
24b84912 JK |
2335 | /* |
2336 | * we already allocated all the blocks, so we don't need to get | |
2337 | * the block addresses when there is no need to fill the page. | |
2338 | */ | |
dc91de78 JK |
2339 | if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && |
2340 | !is_inode_flag_set(inode, FI_NO_PREALLOC)) | |
24b84912 JK |
2341 | return 0; |
2342 | ||
2866fb16 SY |
2343 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
2344 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
2345 | flag = F2FS_GET_BLOCK_DEFAULT; | |
2346 | else | |
2347 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
2348 | ||
b4d07a3e | 2349 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 2350 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
2866fb16 | 2351 | __do_map_lock(sbi, flag, true); |
b4d07a3e JK |
2352 | locked = true; |
2353 | } | |
2354 | restart: | |
2aadac08 | 2355 | /* check inline_data */ |
4d57b86d | 2356 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
2357 | if (IS_ERR(ipage)) { |
2358 | err = PTR_ERR(ipage); | |
2359 | goto unlock_out; | |
2360 | } | |
2361 | ||
2362 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
2363 | ||
2364 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 2365 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 2366 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 2367 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d CY |
2368 | if (inode->i_nlink) |
2369 | set_inline_node(ipage); | |
2aadac08 JK |
2370 | } else { |
2371 | err = f2fs_convert_inline_page(&dn, page); | |
2372 | if (err) | |
b4d07a3e JK |
2373 | goto out; |
2374 | if (dn.data_blkaddr == NULL_ADDR) | |
2375 | err = f2fs_get_block(&dn, index); | |
2376 | } | |
2377 | } else if (locked) { | |
2378 | err = f2fs_get_block(&dn, index); | |
2379 | } else { | |
2380 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
2381 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
2382 | } else { | |
b4d07a3e | 2383 | /* hole case */ |
4d57b86d | 2384 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 2385 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 2386 | f2fs_put_dnode(&dn); |
59c9081b YH |
2387 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
2388 | true); | |
2866fb16 | 2389 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
2390 | locked = true; |
2391 | goto restart; | |
2392 | } | |
2aadac08 JK |
2393 | } |
2394 | } | |
b4d07a3e | 2395 | |
2aadac08 JK |
2396 | /* convert_inline_page can make node_changed */ |
2397 | *blk_addr = dn.data_blkaddr; | |
2398 | *node_changed = dn.node_changed; | |
b4d07a3e | 2399 | out: |
2aadac08 JK |
2400 | f2fs_put_dnode(&dn); |
2401 | unlock_out: | |
b4d07a3e | 2402 | if (locked) |
2866fb16 | 2403 | __do_map_lock(sbi, flag, false); |
2aadac08 JK |
2404 | return err; |
2405 | } | |
2406 | ||
eb47b800 JK |
2407 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
2408 | loff_t pos, unsigned len, unsigned flags, | |
2409 | struct page **pagep, void **fsdata) | |
2410 | { | |
2411 | struct inode *inode = mapping->host; | |
4081363f | 2412 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 2413 | struct page *page = NULL; |
09cbfeaf | 2414 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 2415 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 2416 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
2417 | int err = 0; |
2418 | ||
62aed044 CY |
2419 | trace_f2fs_write_begin(inode, pos, len, flags); |
2420 | ||
4354994f DR |
2421 | err = f2fs_is_checkpoint_ready(sbi); |
2422 | if (err) | |
2423 | goto fail; | |
2424 | ||
455e3a58 JK |
2425 | if ((f2fs_is_atomic_file(inode) && |
2426 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
2427 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 2428 | err = -ENOMEM; |
a2e2e76b | 2429 | drop_atomic = true; |
57864ae5 JK |
2430 | goto fail; |
2431 | } | |
2432 | ||
5f727395 JK |
2433 | /* |
2434 | * We should check this at this moment to avoid deadlock on inode page | |
2435 | * and #0 page. The locking rule for inline_data conversion should be: | |
2436 | * lock_page(page #0) -> lock_page(inode_page) | |
2437 | */ | |
2438 | if (index != 0) { | |
2439 | err = f2fs_convert_inline_inode(inode); | |
2440 | if (err) | |
2441 | goto fail; | |
2442 | } | |
afcb7ca0 | 2443 | repeat: |
86d54795 JK |
2444 | /* |
2445 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
2446 | * wait_for_stable_page. Will wait that below with our IO control. | |
2447 | */ | |
01eccef7 | 2448 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 2449 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
2450 | if (!page) { |
2451 | err = -ENOMEM; | |
2452 | goto fail; | |
2453 | } | |
d5f66990 | 2454 | |
eb47b800 JK |
2455 | *pagep = page; |
2456 | ||
2aadac08 JK |
2457 | err = prepare_write_begin(sbi, page, pos, len, |
2458 | &blkaddr, &need_balance); | |
9ba69cf9 | 2459 | if (err) |
2aadac08 | 2460 | goto fail; |
9ba69cf9 | 2461 | |
af033b2a CY |
2462 | if (need_balance && !IS_NOQUOTA(inode) && |
2463 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 2464 | unlock_page(page); |
2c4db1a6 | 2465 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
2466 | lock_page(page); |
2467 | if (page->mapping != mapping) { | |
2468 | /* The page got truncated from under us */ | |
2469 | f2fs_put_page(page, 1); | |
2470 | goto repeat; | |
2471 | } | |
2472 | } | |
2473 | ||
bae0ee7a | 2474 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 2475 | |
649d7df2 JK |
2476 | if (len == PAGE_SIZE || PageUptodate(page)) |
2477 | return 0; | |
eb47b800 | 2478 | |
746e2403 YH |
2479 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode)) { |
2480 | zero_user_segment(page, len, PAGE_SIZE); | |
2481 | return 0; | |
2482 | } | |
2483 | ||
2aadac08 | 2484 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 2485 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 2486 | SetPageUptodate(page); |
eb47b800 | 2487 | } else { |
13ba41e3 JK |
2488 | err = f2fs_submit_page_read(inode, page, blkaddr); |
2489 | if (err) | |
78682f79 | 2490 | goto fail; |
d54c795b | 2491 | |
393ff91f | 2492 | lock_page(page); |
6bacf52f | 2493 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
2494 | f2fs_put_page(page, 1); |
2495 | goto repeat; | |
eb47b800 | 2496 | } |
1563ac75 CY |
2497 | if (unlikely(!PageUptodate(page))) { |
2498 | err = -EIO; | |
2499 | goto fail; | |
4375a336 | 2500 | } |
eb47b800 | 2501 | } |
eb47b800 | 2502 | return 0; |
9ba69cf9 | 2503 | |
3aab8f82 | 2504 | fail: |
86531d6b | 2505 | f2fs_put_page(page, 1); |
3aab8f82 | 2506 | f2fs_write_failed(mapping, pos + len); |
a2e2e76b | 2507 | if (drop_atomic) |
4d57b86d | 2508 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 2509 | return err; |
eb47b800 JK |
2510 | } |
2511 | ||
a1dd3c13 JK |
2512 | static int f2fs_write_end(struct file *file, |
2513 | struct address_space *mapping, | |
2514 | loff_t pos, unsigned len, unsigned copied, | |
2515 | struct page *page, void *fsdata) | |
2516 | { | |
2517 | struct inode *inode = page->mapping->host; | |
2518 | ||
dfb2bf38 CY |
2519 | trace_f2fs_write_end(inode, pos, len, copied); |
2520 | ||
649d7df2 JK |
2521 | /* |
2522 | * This should be come from len == PAGE_SIZE, and we expect copied | |
2523 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
2524 | * let generic_perform_write() try to copy data again through copied=0. | |
2525 | */ | |
2526 | if (!PageUptodate(page)) { | |
746e2403 | 2527 | if (unlikely(copied != len)) |
649d7df2 JK |
2528 | copied = 0; |
2529 | else | |
2530 | SetPageUptodate(page); | |
2531 | } | |
2532 | if (!copied) | |
2533 | goto unlock_out; | |
2534 | ||
34ba94ba | 2535 | set_page_dirty(page); |
a1dd3c13 | 2536 | |
fc9581c8 JK |
2537 | if (pos + copied > i_size_read(inode)) |
2538 | f2fs_i_size_write(inode, pos + copied); | |
649d7df2 | 2539 | unlock_out: |
3024c9a1 | 2540 | f2fs_put_page(page, 1); |
d0239e1b | 2541 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
2542 | return copied; |
2543 | } | |
2544 | ||
6f673763 OS |
2545 | static int check_direct_IO(struct inode *inode, struct iov_iter *iter, |
2546 | loff_t offset) | |
944fcfc1 | 2547 | { |
8a56dd96 JK |
2548 | unsigned i_blkbits = READ_ONCE(inode->i_blkbits); |
2549 | unsigned blkbits = i_blkbits; | |
2550 | unsigned blocksize_mask = (1 << blkbits) - 1; | |
2551 | unsigned long align = offset | iov_iter_alignment(iter); | |
2552 | struct block_device *bdev = inode->i_sb->s_bdev; | |
2553 | ||
2554 | if (align & blocksize_mask) { | |
2555 | if (bdev) | |
2556 | blkbits = blksize_bits(bdev_logical_block_size(bdev)); | |
2557 | blocksize_mask = (1 << blkbits) - 1; | |
2558 | if (align & blocksize_mask) | |
2559 | return -EINVAL; | |
2560 | return 1; | |
2561 | } | |
944fcfc1 JK |
2562 | return 0; |
2563 | } | |
2564 | ||
02b16d0a CY |
2565 | static void f2fs_dio_end_io(struct bio *bio) |
2566 | { | |
2567 | struct f2fs_private_dio *dio = bio->bi_private; | |
2568 | ||
2569 | dec_page_count(F2FS_I_SB(dio->inode), | |
2570 | dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
2571 | ||
2572 | bio->bi_private = dio->orig_private; | |
2573 | bio->bi_end_io = dio->orig_end_io; | |
2574 | ||
5222595d | 2575 | kvfree(dio); |
02b16d0a CY |
2576 | |
2577 | bio_endio(bio); | |
2578 | } | |
2579 | ||
2580 | static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode, | |
2581 | loff_t file_offset) | |
2582 | { | |
2583 | struct f2fs_private_dio *dio; | |
2584 | bool write = (bio_op(bio) == REQ_OP_WRITE); | |
2585 | int err; | |
2586 | ||
2587 | dio = f2fs_kzalloc(F2FS_I_SB(inode), | |
2588 | sizeof(struct f2fs_private_dio), GFP_NOFS); | |
2589 | if (!dio) { | |
2590 | err = -ENOMEM; | |
2591 | goto out; | |
2592 | } | |
2593 | ||
2594 | dio->inode = inode; | |
2595 | dio->orig_end_io = bio->bi_end_io; | |
2596 | dio->orig_private = bio->bi_private; | |
2597 | dio->write = write; | |
2598 | ||
2599 | bio->bi_end_io = f2fs_dio_end_io; | |
2600 | bio->bi_private = dio; | |
2601 | ||
2602 | inc_page_count(F2FS_I_SB(inode), | |
2603 | write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
2604 | ||
2605 | submit_bio(bio); | |
2606 | return; | |
2607 | out: | |
2608 | bio->bi_status = BLK_STS_IOERR; | |
2609 | bio_endio(bio); | |
2610 | } | |
2611 | ||
c8b8e32d | 2612 | static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
eb47b800 | 2613 | { |
b439b103 | 2614 | struct address_space *mapping = iocb->ki_filp->f_mapping; |
3aab8f82 | 2615 | struct inode *inode = mapping->host; |
0cdd3195 | 2616 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f847c699 | 2617 | struct f2fs_inode_info *fi = F2FS_I(inode); |
3aab8f82 | 2618 | size_t count = iov_iter_count(iter); |
c8b8e32d | 2619 | loff_t offset = iocb->ki_pos; |
82e0a5aa | 2620 | int rw = iov_iter_rw(iter); |
3aab8f82 | 2621 | int err; |
0cdd3195 | 2622 | enum rw_hint hint = iocb->ki_hint; |
63189b78 | 2623 | int whint_mode = F2FS_OPTION(sbi).whint_mode; |
f847c699 | 2624 | bool do_opu; |
944fcfc1 | 2625 | |
b439b103 | 2626 | err = check_direct_IO(inode, iter, offset); |
b9d777b8 | 2627 | if (err) |
8a56dd96 | 2628 | return err < 0 ? err : 0; |
9ffe0fb5 | 2629 | |
f847c699 | 2630 | if (f2fs_force_buffered_io(inode, iocb, iter)) |
36abef4e | 2631 | return 0; |
fcc85a4d | 2632 | |
f847c699 CY |
2633 | do_opu = allow_outplace_dio(inode, iocb, iter); |
2634 | ||
5302fb00 | 2635 | trace_f2fs_direct_IO_enter(inode, offset, count, rw); |
70407fad | 2636 | |
0cdd3195 HL |
2637 | if (rw == WRITE && whint_mode == WHINT_MODE_OFF) |
2638 | iocb->ki_hint = WRITE_LIFE_NOT_SET; | |
2639 | ||
f847c699 CY |
2640 | if (iocb->ki_flags & IOCB_NOWAIT) { |
2641 | if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { | |
2642 | iocb->ki_hint = hint; | |
2643 | err = -EAGAIN; | |
2644 | goto out; | |
2645 | } | |
2646 | if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { | |
2647 | up_read(&fi->i_gc_rwsem[rw]); | |
b91050a8 HL |
2648 | iocb->ki_hint = hint; |
2649 | err = -EAGAIN; | |
2650 | goto out; | |
2651 | } | |
f847c699 CY |
2652 | } else { |
2653 | down_read(&fi->i_gc_rwsem[rw]); | |
2654 | if (do_opu) | |
2655 | down_read(&fi->i_gc_rwsem[READ]); | |
b91050a8 HL |
2656 | } |
2657 | ||
02b16d0a | 2658 | err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, |
f9d6d059 CY |
2659 | iter, rw == WRITE ? get_data_block_dio_write : |
2660 | get_data_block_dio, NULL, f2fs_dio_submit_bio, | |
02b16d0a | 2661 | DIO_LOCKING | DIO_SKIP_HOLES); |
f847c699 CY |
2662 | |
2663 | if (do_opu) | |
2664 | up_read(&fi->i_gc_rwsem[READ]); | |
2665 | ||
2666 | up_read(&fi->i_gc_rwsem[rw]); | |
82e0a5aa CY |
2667 | |
2668 | if (rw == WRITE) { | |
0cdd3195 HL |
2669 | if (whint_mode == WHINT_MODE_OFF) |
2670 | iocb->ki_hint = hint; | |
b0af6d49 CY |
2671 | if (err > 0) { |
2672 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
2673 | err); | |
f847c699 CY |
2674 | if (!do_opu) |
2675 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
b0af6d49 | 2676 | } else if (err < 0) { |
6bfc4919 | 2677 | f2fs_write_failed(mapping, offset + count); |
b0af6d49 | 2678 | } |
6bfc4919 | 2679 | } |
70407fad | 2680 | |
b91050a8 | 2681 | out: |
5302fb00 | 2682 | trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); |
70407fad | 2683 | |
3aab8f82 | 2684 | return err; |
eb47b800 JK |
2685 | } |
2686 | ||
487261f3 CY |
2687 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
2688 | unsigned int length) | |
eb47b800 JK |
2689 | { |
2690 | struct inode *inode = page->mapping->host; | |
487261f3 | 2691 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 2692 | |
487261f3 | 2693 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 2694 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
2695 | return; |
2696 | ||
487261f3 | 2697 | if (PageDirty(page)) { |
933439c8 | 2698 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 2699 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 2700 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 2701 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 2702 | } else { |
487261f3 | 2703 | inode_dec_dirty_pages(inode); |
4d57b86d | 2704 | f2fs_remove_dirty_inode(inode); |
933439c8 | 2705 | } |
487261f3 | 2706 | } |
decd36b6 | 2707 | |
2baf0781 CY |
2708 | clear_cold_data(page); |
2709 | ||
decd36b6 CY |
2710 | /* This is atomic written page, keep Private */ |
2711 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
4d57b86d | 2712 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 2713 | |
23dc974e | 2714 | set_page_private(page, 0); |
eb47b800 JK |
2715 | ClearPagePrivate(page); |
2716 | } | |
2717 | ||
487261f3 | 2718 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 2719 | { |
f68daeeb JK |
2720 | /* If this is dirty page, keep PagePrivate */ |
2721 | if (PageDirty(page)) | |
2722 | return 0; | |
2723 | ||
decd36b6 CY |
2724 | /* This is atomic written page, keep Private */ |
2725 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
2726 | return 0; | |
2727 | ||
2baf0781 | 2728 | clear_cold_data(page); |
23dc974e | 2729 | set_page_private(page, 0); |
eb47b800 | 2730 | ClearPagePrivate(page); |
c3850aa1 | 2731 | return 1; |
eb47b800 JK |
2732 | } |
2733 | ||
2734 | static int f2fs_set_data_page_dirty(struct page *page) | |
2735 | { | |
2736 | struct address_space *mapping = page->mapping; | |
2737 | struct inode *inode = mapping->host; | |
2738 | ||
26c6b887 JK |
2739 | trace_f2fs_set_page_dirty(page, DATA); |
2740 | ||
237c0790 JK |
2741 | if (!PageUptodate(page)) |
2742 | SetPageUptodate(page); | |
34ba94ba | 2743 | |
5fe45743 | 2744 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
decd36b6 | 2745 | if (!IS_ATOMIC_WRITTEN_PAGE(page)) { |
4d57b86d | 2746 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
2747 | return 1; |
2748 | } | |
2749 | /* | |
2750 | * Previously, this page has been registered, we just | |
2751 | * return here. | |
2752 | */ | |
2753 | return 0; | |
34ba94ba JK |
2754 | } |
2755 | ||
eb47b800 | 2756 | if (!PageDirty(page)) { |
b87078ad | 2757 | __set_page_dirty_nobuffers(page); |
4d57b86d | 2758 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
2759 | return 1; |
2760 | } | |
2761 | return 0; | |
2762 | } | |
2763 | ||
c01e54b7 JK |
2764 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
2765 | { | |
454ae7e5 CY |
2766 | struct inode *inode = mapping->host; |
2767 | ||
1d373a0e JK |
2768 | if (f2fs_has_inline_data(inode)) |
2769 | return 0; | |
2770 | ||
2771 | /* make sure allocating whole blocks */ | |
2772 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
2773 | filemap_write_and_wait(mapping); | |
2774 | ||
e2b4e2bc | 2775 | return generic_block_bmap(mapping, block, get_data_block_bmap); |
429511cd CY |
2776 | } |
2777 | ||
5b7a487c WG |
2778 | #ifdef CONFIG_MIGRATION |
2779 | #include <linux/migrate.h> | |
2780 | ||
2781 | int f2fs_migrate_page(struct address_space *mapping, | |
2782 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
2783 | { | |
2784 | int rc, extra_count; | |
2785 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
2786 | bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); | |
2787 | ||
2788 | BUG_ON(PageWriteback(page)); | |
2789 | ||
2790 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
2791 | if (atomic_written) { |
2792 | if (mode != MIGRATE_SYNC) | |
2793 | return -EBUSY; | |
2794 | if (!mutex_trylock(&fi->inmem_lock)) | |
2795 | return -EAGAIN; | |
2796 | } | |
5b7a487c WG |
2797 | |
2798 | /* | |
2799 | * A reference is expected if PagePrivate set when move mapping, | |
2800 | * however F2FS breaks this for maintaining dirty page counts when | |
2801 | * truncating pages. So here adjusting the 'extra_count' make it work. | |
2802 | */ | |
2803 | extra_count = (atomic_written ? 1 : 0) - page_has_private(page); | |
2804 | rc = migrate_page_move_mapping(mapping, newpage, | |
ab41ee68 | 2805 | page, mode, extra_count); |
5b7a487c WG |
2806 | if (rc != MIGRATEPAGE_SUCCESS) { |
2807 | if (atomic_written) | |
2808 | mutex_unlock(&fi->inmem_lock); | |
2809 | return rc; | |
2810 | } | |
2811 | ||
2812 | if (atomic_written) { | |
2813 | struct inmem_pages *cur; | |
2814 | list_for_each_entry(cur, &fi->inmem_pages, list) | |
2815 | if (cur->page == page) { | |
2816 | cur->page = newpage; | |
2817 | break; | |
2818 | } | |
2819 | mutex_unlock(&fi->inmem_lock); | |
2820 | put_page(page); | |
2821 | get_page(newpage); | |
2822 | } | |
2823 | ||
2824 | if (PagePrivate(page)) | |
2825 | SetPagePrivate(newpage); | |
2826 | set_page_private(newpage, page_private(page)); | |
2827 | ||
2916ecc0 JG |
2828 | if (mode != MIGRATE_SYNC_NO_COPY) |
2829 | migrate_page_copy(newpage, page); | |
2830 | else | |
2831 | migrate_page_states(newpage, page); | |
5b7a487c WG |
2832 | |
2833 | return MIGRATEPAGE_SUCCESS; | |
2834 | } | |
2835 | #endif | |
2836 | ||
eb47b800 JK |
2837 | const struct address_space_operations f2fs_dblock_aops = { |
2838 | .readpage = f2fs_read_data_page, | |
2839 | .readpages = f2fs_read_data_pages, | |
2840 | .writepage = f2fs_write_data_page, | |
2841 | .writepages = f2fs_write_data_pages, | |
2842 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 2843 | .write_end = f2fs_write_end, |
eb47b800 | 2844 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
2845 | .invalidatepage = f2fs_invalidate_page, |
2846 | .releasepage = f2fs_release_page, | |
eb47b800 | 2847 | .direct_IO = f2fs_direct_IO, |
c01e54b7 | 2848 | .bmap = f2fs_bmap, |
5b7a487c WG |
2849 | #ifdef CONFIG_MIGRATION |
2850 | .migratepage = f2fs_migrate_page, | |
2851 | #endif | |
eb47b800 | 2852 | }; |
6dbb1796 | 2853 | |
5ec2d99d | 2854 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
2855 | { |
2856 | struct address_space *mapping = page_mapping(page); | |
2857 | unsigned long flags; | |
2858 | ||
2859 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 2860 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
2861 | PAGECACHE_TAG_DIRTY); |
2862 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
2863 | } | |
2864 | ||
6dbb1796 EB |
2865 | int __init f2fs_init_post_read_processing(void) |
2866 | { | |
2867 | bio_post_read_ctx_cache = KMEM_CACHE(bio_post_read_ctx, 0); | |
2868 | if (!bio_post_read_ctx_cache) | |
2869 | goto fail; | |
2870 | bio_post_read_ctx_pool = | |
2871 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
2872 | bio_post_read_ctx_cache); | |
2873 | if (!bio_post_read_ctx_pool) | |
2874 | goto fail_free_cache; | |
2875 | return 0; | |
2876 | ||
2877 | fail_free_cache: | |
2878 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
2879 | fail: | |
2880 | return -ENOMEM; | |
2881 | } | |
2882 | ||
2883 | void __exit f2fs_destroy_post_read_processing(void) | |
2884 | { | |
2885 | mempool_destroy(bio_post_read_ctx_pool); | |
2886 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
2887 | } |