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; |
6dc4f100 | 90 | struct bvec_iter_all iter_all; |
93dfe2ac | 91 | |
6dc4f100 | 92 | bio_for_each_segment_all(bv, bio, i, iter_all) { |
6dbb1796 EB |
93 | page = bv->bv_page; |
94 | ||
95 | /* PG_error was set if any post_read step failed */ | |
96 | if (bio->bi_status || PageError(page)) { | |
97 | ClearPageUptodate(page); | |
fb7d70db JK |
98 | /* will re-read again later */ |
99 | ClearPageError(page); | |
6dbb1796 EB |
100 | } else { |
101 | SetPageUptodate(page); | |
102 | } | |
5f9abab4 | 103 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
104 | unlock_page(page); |
105 | } | |
106 | if (bio->bi_private) | |
107 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
108 | bio_put(bio); | |
109 | } | |
110 | ||
111 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx); | |
112 | ||
113 | static void decrypt_work(struct work_struct *work) | |
114 | { | |
115 | struct bio_post_read_ctx *ctx = | |
116 | container_of(work, struct bio_post_read_ctx, work); | |
117 | ||
118 | fscrypt_decrypt_bio(ctx->bio); | |
119 | ||
120 | bio_post_read_processing(ctx); | |
121 | } | |
122 | ||
123 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx) | |
124 | { | |
125 | switch (++ctx->cur_step) { | |
126 | case STEP_DECRYPT: | |
127 | if (ctx->enabled_steps & (1 << STEP_DECRYPT)) { | |
128 | INIT_WORK(&ctx->work, decrypt_work); | |
129 | fscrypt_enqueue_decrypt_work(&ctx->work); | |
130 | return; | |
131 | } | |
132 | ctx->cur_step++; | |
133 | /* fall-through */ | |
134 | default: | |
135 | __read_end_io(ctx->bio); | |
136 | } | |
137 | } | |
138 | ||
139 | static bool f2fs_bio_post_read_required(struct bio *bio) | |
140 | { | |
141 | return bio->bi_private && !bio->bi_status; | |
142 | } | |
143 | ||
144 | static void f2fs_read_end_io(struct bio *bio) | |
145 | { | |
6f5c2ed0 CY |
146 | if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)), |
147 | FAULT_READ_IO)) { | |
148 | f2fs_show_injection_info(FAULT_READ_IO); | |
4e4cbee9 | 149 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 150 | } |
8b038c70 | 151 | |
6dbb1796 EB |
152 | if (f2fs_bio_post_read_required(bio)) { |
153 | struct bio_post_read_ctx *ctx = bio->bi_private; | |
f1e88660 | 154 | |
6dbb1796 EB |
155 | ctx->cur_step = STEP_INITIAL; |
156 | bio_post_read_processing(ctx); | |
157 | return; | |
f1e88660 | 158 | } |
6dbb1796 EB |
159 | |
160 | __read_end_io(bio); | |
f1e88660 JK |
161 | } |
162 | ||
4246a0b6 | 163 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 164 | { |
1b1f559f | 165 | struct f2fs_sb_info *sbi = bio->bi_private; |
f568849e LT |
166 | struct bio_vec *bvec; |
167 | int i; | |
6dc4f100 | 168 | struct bvec_iter_all iter_all; |
93dfe2ac | 169 | |
6f5c2ed0 CY |
170 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
171 | f2fs_show_injection_info(FAULT_WRITE_IO); | |
172 | bio->bi_status = BLK_STS_IOERR; | |
173 | } | |
174 | ||
6dc4f100 | 175 | bio_for_each_segment_all(bvec, bio, i, iter_all) { |
93dfe2ac | 176 | struct page *page = bvec->bv_page; |
36951b38 | 177 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 178 | |
0a595eba JK |
179 | if (IS_DUMMY_WRITTEN_PAGE(page)) { |
180 | set_page_private(page, (unsigned long)NULL); | |
181 | ClearPagePrivate(page); | |
182 | unlock_page(page); | |
183 | mempool_free(page, sbi->write_io_dummy); | |
184 | ||
4e4cbee9 | 185 | if (unlikely(bio->bi_status)) |
0a595eba JK |
186 | f2fs_stop_checkpoint(sbi, true); |
187 | continue; | |
188 | } | |
189 | ||
0b81d077 | 190 | fscrypt_pullback_bio_page(&page, true); |
4375a336 | 191 | |
4e4cbee9 | 192 | if (unlikely(bio->bi_status)) { |
5114a97a | 193 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
194 | if (type == F2FS_WB_CP_DATA) |
195 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 196 | } |
7dff55d2 YH |
197 | |
198 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
199 | page->index != nid_of_node(page)); | |
200 | ||
36951b38 | 201 | dec_page_count(sbi, type); |
50fa53ec CY |
202 | if (f2fs_in_warm_node_list(sbi, page)) |
203 | f2fs_del_fsync_node_entry(sbi, page); | |
36951b38 | 204 | clear_cold_data(page); |
93dfe2ac | 205 | end_page_writeback(page); |
f568849e | 206 | } |
36951b38 | 207 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 208 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
209 | wake_up(&sbi->cp_wait); |
210 | ||
211 | bio_put(bio); | |
212 | } | |
213 | ||
3c62be17 JK |
214 | /* |
215 | * Return true, if pre_bio's bdev is same as its target device. | |
216 | */ | |
217 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, | |
218 | block_t blk_addr, struct bio *bio) | |
219 | { | |
220 | struct block_device *bdev = sbi->sb->s_bdev; | |
221 | int i; | |
222 | ||
0916878d DLM |
223 | if (f2fs_is_multi_device(sbi)) { |
224 | for (i = 0; i < sbi->s_ndevs; i++) { | |
225 | if (FDEV(i).start_blk <= blk_addr && | |
226 | FDEV(i).end_blk >= blk_addr) { | |
227 | blk_addr -= FDEV(i).start_blk; | |
228 | bdev = FDEV(i).bdev; | |
229 | break; | |
230 | } | |
3c62be17 JK |
231 | } |
232 | } | |
233 | if (bio) { | |
74d46992 | 234 | bio_set_dev(bio, bdev); |
3c62be17 JK |
235 | bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |
236 | } | |
237 | return bdev; | |
238 | } | |
239 | ||
240 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
241 | { | |
242 | int i; | |
243 | ||
0916878d DLM |
244 | if (!f2fs_is_multi_device(sbi)) |
245 | return 0; | |
246 | ||
3c62be17 JK |
247 | for (i = 0; i < sbi->s_ndevs; i++) |
248 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
249 | return i; | |
250 | return 0; | |
251 | } | |
252 | ||
253 | static bool __same_bdev(struct f2fs_sb_info *sbi, | |
254 | block_t blk_addr, struct bio *bio) | |
255 | { | |
74d46992 CH |
256 | struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); |
257 | return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; | |
3c62be17 JK |
258 | } |
259 | ||
940a6d34 GZ |
260 | /* |
261 | * Low-level block read/write IO operations. | |
262 | */ | |
263 | static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, | |
578c6478 | 264 | struct writeback_control *wbc, |
0cdd3195 HL |
265 | int npages, bool is_read, |
266 | enum page_type type, enum temp_type temp) | |
940a6d34 GZ |
267 | { |
268 | struct bio *bio; | |
269 | ||
d62fe971 | 270 | bio = f2fs_bio_alloc(sbi, npages, true); |
940a6d34 | 271 | |
3c62be17 | 272 | f2fs_target_device(sbi, blk_addr, bio); |
0cdd3195 HL |
273 | if (is_read) { |
274 | bio->bi_end_io = f2fs_read_end_io; | |
275 | bio->bi_private = NULL; | |
276 | } else { | |
277 | bio->bi_end_io = f2fs_write_end_io; | |
278 | bio->bi_private = sbi; | |
4d57b86d | 279 | bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, type, temp); |
0cdd3195 | 280 | } |
578c6478 YY |
281 | if (wbc) |
282 | wbc_init_bio(wbc, bio); | |
940a6d34 GZ |
283 | |
284 | return bio; | |
285 | } | |
286 | ||
4fc29c1a LT |
287 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
288 | struct bio *bio, enum page_type type) | |
f5730184 | 289 | { |
4fc29c1a | 290 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
291 | unsigned int start; |
292 | ||
0a595eba JK |
293 | if (type != DATA && type != NODE) |
294 | goto submit_io; | |
295 | ||
66415cee | 296 | if (test_opt(sbi, LFS) && current->plug) |
3bb09a0e TY |
297 | blk_finish_plug(current->plug); |
298 | ||
0a595eba JK |
299 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
300 | start %= F2FS_IO_SIZE(sbi); | |
301 | ||
302 | if (start == 0) | |
303 | goto submit_io; | |
304 | ||
305 | /* fill dummy pages */ | |
306 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
307 | struct page *page = | |
308 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 309 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
310 | f2fs_bug_on(sbi, !page); |
311 | ||
bc73a4b2 | 312 | zero_user_segment(page, 0, PAGE_SIZE); |
0a595eba JK |
313 | SetPagePrivate(page); |
314 | set_page_private(page, (unsigned long)DUMMY_WRITTEN_PAGE); | |
315 | lock_page(page); | |
316 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) | |
317 | f2fs_bug_on(sbi, 1); | |
318 | } | |
319 | /* | |
320 | * In the NODE case, we lose next block address chain. So, we | |
321 | * need to do checkpoint in f2fs_sync_file. | |
322 | */ | |
323 | if (type == NODE) | |
324 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 325 | } |
0a595eba | 326 | submit_io: |
554b5125 JK |
327 | if (is_read_io(bio_op(bio))) |
328 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
329 | else | |
330 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
4e49ea4a | 331 | submit_bio(bio); |
f5730184 JK |
332 | } |
333 | ||
458e6197 | 334 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 335 | { |
458e6197 | 336 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
337 | |
338 | if (!io->bio) | |
339 | return; | |
340 | ||
554b5125 JK |
341 | bio_set_op_attrs(io->bio, fio->op, fio->op_flags); |
342 | ||
04d328de | 343 | if (is_read_io(fio->op)) |
554b5125 | 344 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 345 | else |
554b5125 | 346 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 347 | |
4fc29c1a | 348 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
349 | io->bio = NULL; |
350 | } | |
351 | ||
bab475c5 CY |
352 | static bool __has_merged_page(struct f2fs_bio_info *io, struct inode *inode, |
353 | struct page *page, nid_t ino) | |
0fd785eb | 354 | { |
0fd785eb CY |
355 | struct bio_vec *bvec; |
356 | struct page *target; | |
357 | int i; | |
6dc4f100 | 358 | struct bvec_iter_all iter_all; |
0fd785eb | 359 | |
0c3a5797 | 360 | if (!io->bio) |
0fd785eb | 361 | return false; |
0c3a5797 | 362 | |
bab475c5 | 363 | if (!inode && !page && !ino) |
0c3a5797 | 364 | return true; |
0fd785eb | 365 | |
6dc4f100 | 366 | bio_for_each_segment_all(bvec, io->bio, i, iter_all) { |
0fd785eb | 367 | |
0b81d077 | 368 | if (bvec->bv_page->mapping) |
0fd785eb | 369 | target = bvec->bv_page; |
0b81d077 JK |
370 | else |
371 | target = fscrypt_control_page(bvec->bv_page); | |
0fd785eb | 372 | |
0c3a5797 CY |
373 | if (inode && inode == target->mapping->host) |
374 | return true; | |
bab475c5 CY |
375 | if (page && page == target) |
376 | return true; | |
0c3a5797 | 377 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 378 | return true; |
0fd785eb CY |
379 | } |
380 | ||
0fd785eb CY |
381 | return false; |
382 | } | |
383 | ||
b9109b0e | 384 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 385 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
386 | { |
387 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 388 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 389 | |
df0f8dc0 | 390 | down_write(&io->io_rwsem); |
458e6197 JK |
391 | |
392 | /* change META to META_FLUSH in the checkpoint procedure */ | |
393 | if (type >= META_FLUSH) { | |
394 | io->fio.type = META_FLUSH; | |
04d328de | 395 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 396 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 397 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 398 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
399 | } |
400 | __submit_merged_bio(io); | |
df0f8dc0 | 401 | up_write(&io->io_rwsem); |
93dfe2ac JK |
402 | } |
403 | ||
a912b54d | 404 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
405 | struct inode *inode, struct page *page, |
406 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 407 | { |
a912b54d | 408 | enum temp_type temp; |
1e771e83 | 409 | bool ret = true; |
a912b54d JK |
410 | |
411 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
412 | if (!force) { |
413 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
414 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 415 | |
1e771e83 YS |
416 | down_read(&io->io_rwsem); |
417 | ret = __has_merged_page(io, inode, page, ino); | |
418 | up_read(&io->io_rwsem); | |
419 | } | |
420 | if (ret) | |
421 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
422 | |
423 | /* TODO: use HOT temp only for meta pages now. */ | |
424 | if (type >= META) | |
425 | break; | |
426 | } | |
0c3a5797 CY |
427 | } |
428 | ||
b9109b0e | 429 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 430 | { |
adcc00f7 | 431 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
432 | } |
433 | ||
b9109b0e | 434 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
435 | struct inode *inode, struct page *page, |
436 | nid_t ino, enum page_type type) | |
0c3a5797 | 437 | { |
bab475c5 | 438 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
439 | } |
440 | ||
b9109b0e | 441 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 442 | { |
b9109b0e JK |
443 | f2fs_submit_merged_write(sbi, DATA); |
444 | f2fs_submit_merged_write(sbi, NODE); | |
445 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
446 | } |
447 | ||
93dfe2ac JK |
448 | /* |
449 | * Fill the locked page with data located in the block address. | |
771a9a71 | 450 | * A caller needs to unlock the page on failure. |
93dfe2ac | 451 | */ |
05ca3632 | 452 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 453 | { |
93dfe2ac | 454 | struct bio *bio; |
0b81d077 JK |
455 | struct page *page = fio->encrypted_page ? |
456 | fio->encrypted_page : fio->page; | |
93dfe2ac | 457 | |
c9b60788 | 458 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
6dc3a126 CY |
459 | fio->is_por ? META_POR : |
460 | (__is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))) | |
c9b60788 CY |
461 | return -EFAULT; |
462 | ||
2ace38e0 | 463 | trace_f2fs_submit_page_bio(page, fio); |
05ca3632 | 464 | f2fs_trace_ios(fio, 0); |
93dfe2ac JK |
465 | |
466 | /* Allocate a new bio */ | |
578c6478 | 467 | bio = __bio_alloc(fio->sbi, fio->new_blkaddr, fio->io_wbc, |
0cdd3195 | 468 | 1, is_read_io(fio->op), fio->type, fio->temp); |
93dfe2ac | 469 | |
09cbfeaf | 470 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 471 | bio_put(bio); |
93dfe2ac JK |
472 | return -EFAULT; |
473 | } | |
78efac53 CY |
474 | |
475 | if (fio->io_wbc && !is_read_io(fio->op)) | |
476 | wbc_account_io(fio->io_wbc, page, PAGE_SIZE); | |
477 | ||
04d328de | 478 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 479 | |
5f9abab4 JK |
480 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
481 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
482 | |
483 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
484 | return 0; |
485 | } | |
486 | ||
fe16efe6 | 487 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 488 | { |
05ca3632 | 489 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 490 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 491 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 492 | struct page *bio_page; |
93dfe2ac | 493 | |
b9109b0e | 494 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 495 | |
fb830fc5 CY |
496 | down_write(&io->io_rwsem); |
497 | next: | |
498 | if (fio->in_list) { | |
499 | spin_lock(&io->io_lock); | |
500 | if (list_empty(&io->io_list)) { | |
501 | spin_unlock(&io->io_lock); | |
fe16efe6 | 502 | goto out; |
fb830fc5 CY |
503 | } |
504 | fio = list_first_entry(&io->io_list, | |
505 | struct f2fs_io_info, list); | |
506 | list_del(&fio->list); | |
507 | spin_unlock(&io->io_lock); | |
508 | } | |
93dfe2ac | 509 | |
e1da7872 | 510 | if (__is_valid_data_blkaddr(fio->old_blkaddr)) |
0833721e YH |
511 | verify_block_addr(fio, fio->old_blkaddr); |
512 | verify_block_addr(fio, fio->new_blkaddr); | |
93dfe2ac | 513 | |
36951b38 CY |
514 | bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page; |
515 | ||
ebf7c522 TM |
516 | /* set submitted = true as a return value */ |
517 | fio->submitted = true; | |
d68f735b | 518 | |
b9109b0e | 519 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 520 | |
7a9d7548 | 521 | if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1 || |
3c62be17 JK |
522 | (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags) || |
523 | !__same_bdev(sbi, fio->new_blkaddr, io->bio))) | |
458e6197 | 524 | __submit_merged_bio(io); |
93dfe2ac JK |
525 | alloc_new: |
526 | if (io->bio == NULL) { | |
0a595eba JK |
527 | if ((fio->type == DATA || fio->type == NODE) && |
528 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { | |
b9109b0e | 529 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
530 | fio->retry = true; |
531 | goto skip; | |
0a595eba | 532 | } |
578c6478 | 533 | io->bio = __bio_alloc(sbi, fio->new_blkaddr, fio->io_wbc, |
0cdd3195 HL |
534 | BIO_MAX_PAGES, false, |
535 | fio->type, fio->temp); | |
458e6197 | 536 | io->fio = *fio; |
93dfe2ac JK |
537 | } |
538 | ||
a912b54d | 539 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 540 | __submit_merged_bio(io); |
93dfe2ac JK |
541 | goto alloc_new; |
542 | } | |
543 | ||
578c6478 YY |
544 | if (fio->io_wbc) |
545 | wbc_account_io(fio->io_wbc, bio_page, PAGE_SIZE); | |
546 | ||
7a9d7548 | 547 | io->last_block_in_bio = fio->new_blkaddr; |
05ca3632 | 548 | f2fs_trace_ios(fio, 0); |
fb830fc5 CY |
549 | |
550 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 551 | skip: |
fb830fc5 CY |
552 | if (fio->in_list) |
553 | goto next; | |
fe16efe6 | 554 | out: |
4354994f DR |
555 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
556 | f2fs_is_checkpoint_ready(sbi)) | |
5ce80586 | 557 | __submit_merged_bio(io); |
df0f8dc0 | 558 | up_write(&io->io_rwsem); |
93dfe2ac JK |
559 | } |
560 | ||
13ba41e3 | 561 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
e2e59414 | 562 | unsigned nr_pages, unsigned op_flag) |
13ba41e3 JK |
563 | { |
564 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 565 | struct bio *bio; |
6dbb1796 EB |
566 | struct bio_post_read_ctx *ctx; |
567 | unsigned int post_read_steps = 0; | |
13ba41e3 | 568 | |
91291e99 CY |
569 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) |
570 | return ERR_PTR(-EFAULT); | |
571 | ||
d62fe971 | 572 | bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false); |
6dbb1796 | 573 | if (!bio) |
13ba41e3 | 574 | return ERR_PTR(-ENOMEM); |
13ba41e3 JK |
575 | f2fs_target_device(sbi, blkaddr, bio); |
576 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 577 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 578 | |
6dbb1796 EB |
579 | if (f2fs_encrypted_file(inode)) |
580 | post_read_steps |= 1 << STEP_DECRYPT; | |
581 | if (post_read_steps) { | |
582 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); | |
583 | if (!ctx) { | |
584 | bio_put(bio); | |
585 | return ERR_PTR(-ENOMEM); | |
586 | } | |
587 | ctx->bio = bio; | |
588 | ctx->enabled_steps = post_read_steps; | |
589 | bio->bi_private = ctx; | |
6dbb1796 EB |
590 | } |
591 | ||
13ba41e3 JK |
592 | return bio; |
593 | } | |
594 | ||
595 | /* This can handle encryption stuffs */ | |
596 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
597 | block_t blkaddr) | |
598 | { | |
e2e59414 | 599 | struct bio *bio = f2fs_grab_read_bio(inode, blkaddr, 1, 0); |
13ba41e3 JK |
600 | |
601 | if (IS_ERR(bio)) | |
602 | return PTR_ERR(bio); | |
603 | ||
0ded69f6 JK |
604 | /* wait for GCed page writeback via META_MAPPING */ |
605 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
606 | ||
13ba41e3 JK |
607 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
608 | bio_put(bio); | |
609 | return -EFAULT; | |
610 | } | |
fb7d70db | 611 | ClearPageError(page); |
5f9abab4 | 612 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); |
13ba41e3 JK |
613 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
614 | return 0; | |
615 | } | |
616 | ||
46008c6d CY |
617 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
618 | { | |
619 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
620 | __le32 *addr_array; | |
7a2af766 CY |
621 | int base = 0; |
622 | ||
623 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
624 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
625 | |
626 | /* Get physical address of data block */ | |
627 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 628 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
629 | } |
630 | ||
0a8165d7 | 631 | /* |
eb47b800 JK |
632 | * Lock ordering for the change of data block address: |
633 | * ->data_page | |
634 | * ->node_page | |
635 | * update block addresses in the node page | |
636 | */ | |
4d57b86d | 637 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 638 | { |
bae0ee7a | 639 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
640 | __set_data_blkaddr(dn); |
641 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 642 | dn->node_changed = true; |
eb47b800 JK |
643 | } |
644 | ||
f28b3434 CY |
645 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
646 | { | |
647 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 648 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
649 | f2fs_update_extent_cache(dn); |
650 | } | |
651 | ||
46008c6d | 652 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 653 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 654 | { |
4081363f | 655 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 656 | int err; |
eb47b800 | 657 | |
46008c6d CY |
658 | if (!count) |
659 | return 0; | |
660 | ||
91942321 | 661 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 662 | return -EPERM; |
0abd675e CY |
663 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
664 | return err; | |
eb47b800 | 665 | |
46008c6d CY |
666 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
667 | dn->ofs_in_node, count); | |
668 | ||
bae0ee7a | 669 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
670 | |
671 | for (; count > 0; dn->ofs_in_node++) { | |
7a2af766 CY |
672 | block_t blkaddr = datablock_addr(dn->inode, |
673 | dn->node_page, dn->ofs_in_node); | |
46008c6d CY |
674 | if (blkaddr == NULL_ADDR) { |
675 | dn->data_blkaddr = NEW_ADDR; | |
676 | __set_data_blkaddr(dn); | |
677 | count--; | |
678 | } | |
679 | } | |
680 | ||
681 | if (set_page_dirty(dn->node_page)) | |
682 | dn->node_changed = true; | |
eb47b800 JK |
683 | return 0; |
684 | } | |
685 | ||
46008c6d | 686 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 687 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
688 | { |
689 | unsigned int ofs_in_node = dn->ofs_in_node; | |
690 | int ret; | |
691 | ||
4d57b86d | 692 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
693 | dn->ofs_in_node = ofs_in_node; |
694 | return ret; | |
695 | } | |
696 | ||
b600965c HL |
697 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
698 | { | |
699 | bool need_put = dn->inode_page ? false : true; | |
700 | int err; | |
701 | ||
4d57b86d | 702 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
703 | if (err) |
704 | return err; | |
a8865372 | 705 | |
b600965c | 706 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 707 | err = f2fs_reserve_new_block(dn); |
a8865372 | 708 | if (err || need_put) |
b600965c HL |
709 | f2fs_put_dnode(dn); |
710 | return err; | |
711 | } | |
712 | ||
759af1c9 | 713 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 714 | { |
e15882b6 | 715 | struct extent_info ei = {0,0,0}; |
759af1c9 | 716 | struct inode *inode = dn->inode; |
028a41e8 | 717 | |
759af1c9 FL |
718 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
719 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
720 | return 0; | |
429511cd | 721 | } |
028a41e8 | 722 | |
759af1c9 | 723 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
724 | } |
725 | ||
4d57b86d | 726 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 727 | int op_flags, bool for_write) |
eb47b800 | 728 | { |
eb47b800 JK |
729 | struct address_space *mapping = inode->i_mapping; |
730 | struct dnode_of_data dn; | |
731 | struct page *page; | |
e15882b6 | 732 | struct extent_info ei = {0,0,0}; |
eb47b800 | 733 | int err; |
4375a336 | 734 | |
a56c7c6f | 735 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
736 | if (!page) |
737 | return ERR_PTR(-ENOMEM); | |
738 | ||
cb3bc9ee CY |
739 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
740 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
741 | goto got_it; | |
742 | } | |
743 | ||
eb47b800 | 744 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 745 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
746 | if (err) |
747 | goto put_err; | |
eb47b800 JK |
748 | f2fs_put_dnode(&dn); |
749 | ||
6bacf52f | 750 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
751 | err = -ENOENT; |
752 | goto put_err; | |
650495de | 753 | } |
cb3bc9ee | 754 | got_it: |
43f3eae1 JK |
755 | if (PageUptodate(page)) { |
756 | unlock_page(page); | |
eb47b800 | 757 | return page; |
43f3eae1 | 758 | } |
eb47b800 | 759 | |
d59ff4df JK |
760 | /* |
761 | * A new dentry page is allocated but not able to be written, since its | |
762 | * new inode page couldn't be allocated due to -ENOSPC. | |
763 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
764 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
765 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
766 | */ |
767 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 768 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
769 | if (!PageUptodate(page)) |
770 | SetPageUptodate(page); | |
43f3eae1 | 771 | unlock_page(page); |
d59ff4df JK |
772 | return page; |
773 | } | |
eb47b800 | 774 | |
13ba41e3 | 775 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr); |
393ff91f | 776 | if (err) |
86531d6b | 777 | goto put_err; |
43f3eae1 | 778 | return page; |
86531d6b JK |
779 | |
780 | put_err: | |
781 | f2fs_put_page(page, 1); | |
782 | return ERR_PTR(err); | |
43f3eae1 JK |
783 | } |
784 | ||
4d57b86d | 785 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
786 | { |
787 | struct address_space *mapping = inode->i_mapping; | |
788 | struct page *page; | |
789 | ||
790 | page = find_get_page(mapping, index); | |
791 | if (page && PageUptodate(page)) | |
792 | return page; | |
793 | f2fs_put_page(page, 0); | |
794 | ||
4d57b86d | 795 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
796 | if (IS_ERR(page)) |
797 | return page; | |
798 | ||
799 | if (PageUptodate(page)) | |
800 | return page; | |
801 | ||
802 | wait_on_page_locked(page); | |
803 | if (unlikely(!PageUptodate(page))) { | |
804 | f2fs_put_page(page, 0); | |
805 | return ERR_PTR(-EIO); | |
806 | } | |
807 | return page; | |
808 | } | |
809 | ||
810 | /* | |
811 | * If it tries to access a hole, return an error. | |
812 | * Because, the callers, functions in dir.c and GC, should be able to know | |
813 | * whether this page exists or not. | |
814 | */ | |
4d57b86d | 815 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 816 | bool for_write) |
43f3eae1 JK |
817 | { |
818 | struct address_space *mapping = inode->i_mapping; | |
819 | struct page *page; | |
820 | repeat: | |
4d57b86d | 821 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
822 | if (IS_ERR(page)) |
823 | return page; | |
393ff91f | 824 | |
43f3eae1 | 825 | /* wait for read completion */ |
393ff91f | 826 | lock_page(page); |
6bacf52f | 827 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
828 | f2fs_put_page(page, 1); |
829 | goto repeat; | |
eb47b800 | 830 | } |
1563ac75 CY |
831 | if (unlikely(!PageUptodate(page))) { |
832 | f2fs_put_page(page, 1); | |
833 | return ERR_PTR(-EIO); | |
834 | } | |
eb47b800 JK |
835 | return page; |
836 | } | |
837 | ||
0a8165d7 | 838 | /* |
eb47b800 JK |
839 | * Caller ensures that this data page is never allocated. |
840 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 841 | * |
4f4124d0 CY |
842 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
843 | * f2fs_unlock_op(). | |
470f00e9 CY |
844 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
845 | * ipage should be released by this function. | |
eb47b800 | 846 | */ |
4d57b86d | 847 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 848 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 849 | { |
eb47b800 JK |
850 | struct address_space *mapping = inode->i_mapping; |
851 | struct page *page; | |
852 | struct dnode_of_data dn; | |
853 | int err; | |
7612118a | 854 | |
a56c7c6f | 855 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
856 | if (!page) { |
857 | /* | |
858 | * before exiting, we should make sure ipage will be released | |
859 | * if any error occur. | |
860 | */ | |
861 | f2fs_put_page(ipage, 1); | |
01f28610 | 862 | return ERR_PTR(-ENOMEM); |
470f00e9 | 863 | } |
eb47b800 | 864 | |
a8865372 | 865 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 866 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
867 | if (err) { |
868 | f2fs_put_page(page, 1); | |
eb47b800 | 869 | return ERR_PTR(err); |
a8865372 | 870 | } |
01f28610 JK |
871 | if (!ipage) |
872 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
873 | |
874 | if (PageUptodate(page)) | |
01f28610 | 875 | goto got_it; |
eb47b800 JK |
876 | |
877 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 878 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
879 | if (!PageUptodate(page)) |
880 | SetPageUptodate(page); | |
eb47b800 | 881 | } else { |
4375a336 | 882 | f2fs_put_page(page, 1); |
a8865372 | 883 | |
7612118a JK |
884 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
885 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 886 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 887 | if (IS_ERR(page)) |
7612118a | 888 | return page; |
eb47b800 | 889 | } |
01f28610 | 890 | got_it: |
9edcdabf | 891 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 892 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 893 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
894 | return page; |
895 | } | |
896 | ||
d5097be5 | 897 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 898 | { |
4081363f | 899 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 900 | struct f2fs_summary sum; |
bfad7c2d | 901 | struct node_info ni; |
6aa58d8a | 902 | block_t old_blkaddr; |
46008c6d | 903 | blkcnt_t count = 1; |
0abd675e | 904 | int err; |
bfad7c2d | 905 | |
91942321 | 906 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 907 | return -EPERM; |
df6136ef | 908 | |
7735730d CY |
909 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
910 | if (err) | |
911 | return err; | |
912 | ||
7a2af766 CY |
913 | dn->data_blkaddr = datablock_addr(dn->inode, |
914 | dn->node_page, dn->ofs_in_node); | |
f847c699 | 915 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
916 | goto alloc; |
917 | ||
0abd675e CY |
918 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
919 | return err; | |
bfad7c2d | 920 | |
df6136ef | 921 | alloc: |
bfad7c2d | 922 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
923 | old_blkaddr = dn->data_blkaddr; |
924 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
d5097be5 | 925 | &sum, seg_type, NULL, false); |
6aa58d8a CY |
926 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
927 | invalidate_mapping_pages(META_MAPPING(sbi), | |
928 | old_blkaddr, old_blkaddr); | |
4d57b86d | 929 | f2fs_set_data_blkaddr(dn); |
bfad7c2d | 930 | |
0a4daae5 JK |
931 | /* |
932 | * i_size will be updated by direct_IO. Otherwise, we'll get stale | |
933 | * data from unwritten block via dio_read. | |
934 | */ | |
bfad7c2d JK |
935 | return 0; |
936 | } | |
937 | ||
a7de6086 | 938 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) |
59b802e5 | 939 | { |
b439b103 | 940 | struct inode *inode = file_inode(iocb->ki_filp); |
5b8db7fa | 941 | struct f2fs_map_blocks map; |
d6d478a1 | 942 | int flag; |
a7de6086 | 943 | int err = 0; |
d6d478a1 | 944 | bool direct_io = iocb->ki_flags & IOCB_DIRECT; |
59b802e5 | 945 | |
71ad682c | 946 | /* convert inline data for Direct I/O*/ |
d6d478a1 | 947 | if (direct_io) { |
71ad682c WG |
948 | err = f2fs_convert_inline_inode(inode); |
949 | if (err) | |
950 | return err; | |
951 | } | |
952 | ||
f9d6d059 CY |
953 | if (direct_io && allow_outplace_dio(inode, iocb, from)) |
954 | return 0; | |
955 | ||
dc91de78 JK |
956 | if (is_inode_flag_set(inode, FI_NO_PREALLOC)) |
957 | return 0; | |
958 | ||
0080c507 | 959 | map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); |
dfd02e4d CY |
960 | map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); |
961 | if (map.m_len > map.m_lblk) | |
962 | map.m_len -= map.m_lblk; | |
963 | else | |
964 | map.m_len = 0; | |
965 | ||
da85985c | 966 | map.m_next_pgofs = NULL; |
c4020b2d | 967 | map.m_next_extent = NULL; |
d5097be5 | 968 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 969 | map.m_may_create = true; |
2a340760 | 970 | |
d6d478a1 | 971 | if (direct_io) { |
4d57b86d | 972 | map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); |
f847c699 | 973 | flag = f2fs_force_buffered_io(inode, iocb, from) ? |
d6d478a1 CY |
974 | F2FS_GET_BLOCK_PRE_AIO : |
975 | F2FS_GET_BLOCK_PRE_DIO; | |
976 | goto map_blocks; | |
d5097be5 | 977 | } |
f2470371 | 978 | if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { |
a7de6086 JK |
979 | err = f2fs_convert_inline_inode(inode); |
980 | if (err) | |
981 | return err; | |
b439b103 | 982 | } |
d6d478a1 | 983 | if (f2fs_has_inline_data(inode)) |
25006645 | 984 | return err; |
d6d478a1 CY |
985 | |
986 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
987 | ||
988 | map_blocks: | |
989 | err = f2fs_map_blocks(inode, &map, 1, flag); | |
990 | if (map.m_len > 0 && err == -ENOSPC) { | |
991 | if (!direct_io) | |
992 | set_inode_flag(inode, FI_NO_PREALLOC); | |
993 | err = 0; | |
25006645 | 994 | } |
a7de6086 | 995 | return err; |
59b802e5 JK |
996 | } |
997 | ||
39a86958 | 998 | void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
999 | { |
1000 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1001 | if (lock) | |
1002 | down_read(&sbi->node_change); | |
1003 | else | |
1004 | up_read(&sbi->node_change); | |
1005 | } else { | |
1006 | if (lock) | |
1007 | f2fs_lock_op(sbi); | |
1008 | else | |
1009 | f2fs_unlock_op(sbi); | |
1010 | } | |
1011 | } | |
1012 | ||
0a8165d7 | 1013 | /* |
003a3e1d JK |
1014 | * f2fs_map_blocks() now supported readahead/bmap/rw direct_IO with |
1015 | * f2fs_map_blocks structure. | |
4f4124d0 CY |
1016 | * If original data blocks are allocated, then give them to blockdev. |
1017 | * Otherwise, | |
1018 | * a. preallocate requested block addresses | |
1019 | * b. do not use extent cache for better performance | |
1020 | * c. give the block addresses to blockdev | |
eb47b800 | 1021 | */ |
d323d005 | 1022 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1023 | int create, int flag) |
eb47b800 | 1024 | { |
003a3e1d | 1025 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1026 | struct dnode_of_data dn; |
f9811703 | 1027 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1028 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1029 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1030 | int err = 0, ofs = 1; |
46008c6d CY |
1031 | unsigned int ofs_in_node, last_ofs_in_node; |
1032 | blkcnt_t prealloc; | |
e15882b6 | 1033 | struct extent_info ei = {0,0,0}; |
7df3a431 | 1034 | block_t blkaddr; |
c4020b2d | 1035 | unsigned int start_pgofs; |
eb47b800 | 1036 | |
dfd02e4d CY |
1037 | if (!maxblocks) |
1038 | return 0; | |
1039 | ||
003a3e1d JK |
1040 | map->m_len = 0; |
1041 | map->m_flags = 0; | |
1042 | ||
1043 | /* it only supports block size == page size */ | |
1044 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1045 | end = pgofs + maxblocks; |
eb47b800 | 1046 | |
24b84912 | 1047 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
f4f0b677 JZ |
1048 | if (test_opt(sbi, LFS) && flag == F2FS_GET_BLOCK_DIO && |
1049 | map->m_may_create) | |
1050 | goto next_dnode; | |
1051 | ||
003a3e1d JK |
1052 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1053 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1054 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1055 | if (map->m_next_extent) |
1056 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1057 | |
1058 | /* for hardware encryption, but to avoid potential issue in future */ | |
1059 | if (flag == F2FS_GET_BLOCK_DIO) | |
1060 | f2fs_wait_on_block_writeback_range(inode, | |
1061 | map->m_pblk, map->m_len); | |
bfad7c2d | 1062 | goto out; |
a2e7d1bf | 1063 | } |
bfad7c2d | 1064 | |
4fe71e88 | 1065 | next_dnode: |
f9d6d059 | 1066 | if (map->m_may_create) |
59c9081b | 1067 | __do_map_lock(sbi, flag, true); |
eb47b800 JK |
1068 | |
1069 | /* When reading holes, we need its node page */ | |
1070 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1071 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1072 | if (err) { |
43473f96 CY |
1073 | if (flag == F2FS_GET_BLOCK_BMAP) |
1074 | map->m_pblk = 0; | |
da85985c | 1075 | if (err == -ENOENT) { |
bfad7c2d | 1076 | err = 0; |
da85985c CY |
1077 | if (map->m_next_pgofs) |
1078 | *map->m_next_pgofs = | |
4d57b86d | 1079 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1080 | if (map->m_next_extent) |
1081 | *map->m_next_extent = | |
4d57b86d | 1082 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1083 | } |
bfad7c2d | 1084 | goto unlock_out; |
848753aa | 1085 | } |
973163fc | 1086 | |
c4020b2d | 1087 | start_pgofs = pgofs; |
46008c6d | 1088 | prealloc = 0; |
230436b3 | 1089 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1090 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1091 | |
1092 | next_block: | |
7a2af766 | 1093 | blkaddr = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); |
4fe71e88 | 1094 | |
c9b60788 CY |
1095 | if (__is_valid_data_blkaddr(blkaddr) && |
1096 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
1097 | err = -EFAULT; | |
1098 | goto sync_out; | |
1099 | } | |
1100 | ||
f847c699 CY |
1101 | if (is_valid_data_blkaddr(sbi, blkaddr)) { |
1102 | /* use out-place-update for driect IO under LFS mode */ | |
f9d6d059 CY |
1103 | if (test_opt(sbi, LFS) && flag == F2FS_GET_BLOCK_DIO && |
1104 | map->m_may_create) { | |
f847c699 | 1105 | err = __allocate_data_block(&dn, map->m_seg_type); |
73c0a927 JZ |
1106 | if (!err) { |
1107 | blkaddr = dn.data_blkaddr; | |
f847c699 | 1108 | set_inode_flag(inode, FI_APPEND_WRITE); |
73c0a927 | 1109 | } |
f847c699 CY |
1110 | } |
1111 | } else { | |
973163fc | 1112 | if (create) { |
f9811703 CY |
1113 | if (unlikely(f2fs_cp_error(sbi))) { |
1114 | err = -EIO; | |
4fe71e88 | 1115 | goto sync_out; |
f9811703 | 1116 | } |
24b84912 | 1117 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1118 | if (blkaddr == NULL_ADDR) { |
1119 | prealloc++; | |
1120 | last_ofs_in_node = dn.ofs_in_node; | |
1121 | } | |
24b84912 | 1122 | } else { |
0a4daae5 JK |
1123 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1124 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1125 | err = __allocate_data_block(&dn, |
1126 | map->m_seg_type); | |
6f2d8ed6 | 1127 | if (!err) |
91942321 | 1128 | set_inode_flag(inode, FI_APPEND_WRITE); |
24b84912 | 1129 | } |
973163fc | 1130 | if (err) |
4fe71e88 | 1131 | goto sync_out; |
3f2be043 | 1132 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1133 | blkaddr = dn.data_blkaddr; |
973163fc | 1134 | } else { |
43473f96 CY |
1135 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1136 | map->m_pblk = 0; | |
1137 | goto sync_out; | |
1138 | } | |
c4020b2d CY |
1139 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1140 | goto sync_out; | |
da85985c CY |
1141 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1142 | blkaddr == NULL_ADDR) { | |
1143 | if (map->m_next_pgofs) | |
1144 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1145 | goto sync_out; |
da85985c | 1146 | } |
f3d98e74 CY |
1147 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1148 | /* for defragment case */ | |
1149 | if (map->m_next_pgofs) | |
1150 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1151 | goto sync_out; |
f3d98e74 | 1152 | } |
e2b4e2bc | 1153 | } |
e2b4e2bc | 1154 | } |
eb47b800 | 1155 | |
46008c6d CY |
1156 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1157 | goto skip; | |
1158 | ||
4fe71e88 CY |
1159 | if (map->m_len == 0) { |
1160 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1161 | if (blkaddr == NEW_ADDR) | |
1162 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1163 | map->m_flags |= F2FS_MAP_MAPPED; | |
1164 | ||
1165 | map->m_pblk = blkaddr; | |
1166 | map->m_len = 1; | |
1167 | } else if ((map->m_pblk != NEW_ADDR && | |
1168 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1169 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1170 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
4fe71e88 CY |
1171 | ofs++; |
1172 | map->m_len++; | |
1173 | } else { | |
1174 | goto sync_out; | |
1175 | } | |
bfad7c2d | 1176 | |
46008c6d | 1177 | skip: |
bfad7c2d JK |
1178 | dn.ofs_in_node++; |
1179 | pgofs++; | |
1180 | ||
46008c6d CY |
1181 | /* preallocate blocks in batch for one dnode page */ |
1182 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1183 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1184 | |
46008c6d | 1185 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1186 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1187 | if (err) |
1188 | goto sync_out; | |
bfad7c2d | 1189 | |
46008c6d CY |
1190 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1191 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1192 | err = -ENOSPC; | |
1193 | goto sync_out; | |
3104af35 | 1194 | } |
46008c6d CY |
1195 | dn.ofs_in_node = end_offset; |
1196 | } | |
1197 | ||
1198 | if (pgofs >= end) | |
1199 | goto sync_out; | |
1200 | else if (dn.ofs_in_node < end_offset) | |
1201 | goto next_block; | |
1202 | ||
c4020b2d CY |
1203 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1204 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1205 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1206 | ||
1207 | f2fs_update_extent_cache_range(&dn, | |
1208 | start_pgofs, map->m_pblk + ofs, | |
1209 | map->m_len - ofs); | |
1210 | } | |
1211 | } | |
1212 | ||
46008c6d CY |
1213 | f2fs_put_dnode(&dn); |
1214 | ||
f9d6d059 | 1215 | if (map->m_may_create) { |
59c9081b | 1216 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1217 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1218 | } |
46008c6d | 1219 | goto next_dnode; |
7df3a431 | 1220 | |
bfad7c2d | 1221 | sync_out: |
1e78e8bd ST |
1222 | |
1223 | /* for hardware encryption, but to avoid potential issue in future */ | |
1224 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) | |
1225 | f2fs_wait_on_block_writeback_range(inode, | |
1226 | map->m_pblk, map->m_len); | |
1227 | ||
c4020b2d CY |
1228 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1229 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1230 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1231 | ||
1232 | f2fs_update_extent_cache_range(&dn, | |
1233 | start_pgofs, map->m_pblk + ofs, | |
1234 | map->m_len - ofs); | |
1235 | } | |
1236 | if (map->m_next_extent) | |
1237 | *map->m_next_extent = pgofs + 1; | |
1238 | } | |
eb47b800 | 1239 | f2fs_put_dnode(&dn); |
bfad7c2d | 1240 | unlock_out: |
f9d6d059 | 1241 | if (map->m_may_create) { |
59c9081b | 1242 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1243 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1244 | } |
bfad7c2d | 1245 | out: |
003a3e1d | 1246 | trace_f2fs_map_blocks(inode, map, err); |
bfad7c2d | 1247 | return err; |
eb47b800 JK |
1248 | } |
1249 | ||
b91050a8 HL |
1250 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1251 | { | |
1252 | struct f2fs_map_blocks map; | |
1253 | block_t last_lblk; | |
1254 | int err; | |
1255 | ||
1256 | if (pos + len > i_size_read(inode)) | |
1257 | return false; | |
1258 | ||
1259 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1260 | map.m_next_pgofs = NULL; | |
1261 | map.m_next_extent = NULL; | |
1262 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1263 | map.m_may_create = false; |
b91050a8 HL |
1264 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1265 | ||
1266 | while (map.m_lblk < last_lblk) { | |
1267 | map.m_len = last_lblk - map.m_lblk; | |
1268 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1269 | if (err || map.m_len == 0) | |
1270 | return false; | |
1271 | map.m_lblk += map.m_len; | |
1272 | } | |
1273 | return true; | |
1274 | } | |
1275 | ||
003a3e1d | 1276 | static int __get_data_block(struct inode *inode, sector_t iblock, |
da85985c | 1277 | struct buffer_head *bh, int create, int flag, |
f9d6d059 | 1278 | pgoff_t *next_pgofs, int seg_type, bool may_write) |
003a3e1d JK |
1279 | { |
1280 | struct f2fs_map_blocks map; | |
a7de6086 | 1281 | int err; |
003a3e1d JK |
1282 | |
1283 | map.m_lblk = iblock; | |
1284 | map.m_len = bh->b_size >> inode->i_blkbits; | |
da85985c | 1285 | map.m_next_pgofs = next_pgofs; |
c4020b2d | 1286 | map.m_next_extent = NULL; |
d5097be5 | 1287 | map.m_seg_type = seg_type; |
f9d6d059 | 1288 | map.m_may_create = may_write; |
003a3e1d | 1289 | |
a7de6086 JK |
1290 | err = f2fs_map_blocks(inode, &map, create, flag); |
1291 | if (!err) { | |
003a3e1d JK |
1292 | map_bh(bh, inode->i_sb, map.m_pblk); |
1293 | bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; | |
b86e3307 | 1294 | bh->b_size = (u64)map.m_len << inode->i_blkbits; |
003a3e1d | 1295 | } |
a7de6086 | 1296 | return err; |
003a3e1d JK |
1297 | } |
1298 | ||
ccfb3000 | 1299 | static int get_data_block(struct inode *inode, sector_t iblock, |
da85985c CY |
1300 | struct buffer_head *bh_result, int create, int flag, |
1301 | pgoff_t *next_pgofs) | |
e2b4e2bc | 1302 | { |
da85985c | 1303 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1304 | flag, next_pgofs, |
f9d6d059 CY |
1305 | NO_CHECK_TYPE, create); |
1306 | } | |
1307 | ||
1308 | static int get_data_block_dio_write(struct inode *inode, sector_t iblock, | |
1309 | struct buffer_head *bh_result, int create) | |
1310 | { | |
1311 | return __get_data_block(inode, iblock, bh_result, create, | |
1312 | F2FS_GET_BLOCK_DIO, NULL, | |
1313 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1314 | true); | |
e2b4e2bc CY |
1315 | } |
1316 | ||
1317 | static int get_data_block_dio(struct inode *inode, sector_t iblock, | |
ccfb3000 JK |
1318 | struct buffer_head *bh_result, int create) |
1319 | { | |
e2b4e2bc | 1320 | return __get_data_block(inode, iblock, bh_result, create, |
f9d6d059 CY |
1321 | F2FS_GET_BLOCK_DIO, NULL, |
1322 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1323 | false); | |
ccfb3000 JK |
1324 | } |
1325 | ||
e2b4e2bc | 1326 | static int get_data_block_bmap(struct inode *inode, sector_t iblock, |
ccfb3000 JK |
1327 | struct buffer_head *bh_result, int create) |
1328 | { | |
179448bf | 1329 | /* Block number less than F2FS MAX BLOCKS */ |
e0afc4d6 | 1330 | if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks)) |
179448bf YH |
1331 | return -EFBIG; |
1332 | ||
e2b4e2bc | 1333 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1334 | F2FS_GET_BLOCK_BMAP, NULL, |
f9d6d059 | 1335 | NO_CHECK_TYPE, create); |
ccfb3000 JK |
1336 | } |
1337 | ||
7f63eb77 JK |
1338 | static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) |
1339 | { | |
1340 | return (offset >> inode->i_blkbits); | |
1341 | } | |
1342 | ||
1343 | static inline loff_t blk_to_logical(struct inode *inode, sector_t blk) | |
1344 | { | |
1345 | return (blk << inode->i_blkbits); | |
1346 | } | |
1347 | ||
442a9dbd CY |
1348 | static int f2fs_xattr_fiemap(struct inode *inode, |
1349 | struct fiemap_extent_info *fieinfo) | |
1350 | { | |
1351 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1352 | struct page *page; | |
1353 | struct node_info ni; | |
1354 | __u64 phys = 0, len; | |
1355 | __u32 flags; | |
1356 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1357 | int err = 0; | |
1358 | ||
1359 | if (f2fs_has_inline_xattr(inode)) { | |
1360 | int offset; | |
1361 | ||
1362 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1363 | inode->i_ino, false); | |
1364 | if (!page) | |
1365 | return -ENOMEM; | |
1366 | ||
7735730d CY |
1367 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1368 | if (err) { | |
1369 | f2fs_put_page(page, 1); | |
1370 | return err; | |
1371 | } | |
442a9dbd CY |
1372 | |
1373 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1374 | offset = offsetof(struct f2fs_inode, i_addr) + | |
1375 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1376 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1377 | |
1378 | phys += offset; | |
1379 | len = inline_xattr_size(inode); | |
1380 | ||
1381 | f2fs_put_page(page, 1); | |
1382 | ||
1383 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1384 | ||
1385 | if (!xnid) | |
1386 | flags |= FIEMAP_EXTENT_LAST; | |
1387 | ||
1388 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1389 | if (err || err == 1) | |
1390 | return err; | |
1391 | } | |
1392 | ||
1393 | if (xnid) { | |
1394 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1395 | if (!page) | |
1396 | return -ENOMEM; | |
1397 | ||
7735730d CY |
1398 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1399 | if (err) { | |
1400 | f2fs_put_page(page, 1); | |
1401 | return err; | |
1402 | } | |
442a9dbd CY |
1403 | |
1404 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1405 | len = inode->i_sb->s_blocksize; | |
1406 | ||
1407 | f2fs_put_page(page, 1); | |
1408 | ||
1409 | flags = FIEMAP_EXTENT_LAST; | |
1410 | } | |
1411 | ||
1412 | if (phys) | |
1413 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1414 | ||
1415 | return (err < 0 ? err : 0); | |
1416 | } | |
1417 | ||
9ab70134 JK |
1418 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1419 | u64 start, u64 len) | |
1420 | { | |
7f63eb77 JK |
1421 | struct buffer_head map_bh; |
1422 | sector_t start_blk, last_blk; | |
da85985c | 1423 | pgoff_t next_pgofs; |
7f63eb77 JK |
1424 | u64 logical = 0, phys = 0, size = 0; |
1425 | u32 flags = 0; | |
7f63eb77 JK |
1426 | int ret = 0; |
1427 | ||
c4020b2d CY |
1428 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1429 | ret = f2fs_precache_extents(inode); | |
1430 | if (ret) | |
1431 | return ret; | |
1432 | } | |
1433 | ||
442a9dbd | 1434 | ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1435 | if (ret) |
1436 | return ret; | |
1437 | ||
f1b43d4c CY |
1438 | inode_lock(inode); |
1439 | ||
442a9dbd CY |
1440 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1441 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1442 | goto out; | |
1443 | } | |
1444 | ||
67f8cf3c JK |
1445 | if (f2fs_has_inline_data(inode)) { |
1446 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); | |
1447 | if (ret != -EAGAIN) | |
f1b43d4c | 1448 | goto out; |
67f8cf3c JK |
1449 | } |
1450 | ||
7f63eb77 JK |
1451 | if (logical_to_blk(inode, len) == 0) |
1452 | len = blk_to_logical(inode, 1); | |
1453 | ||
1454 | start_blk = logical_to_blk(inode, start); | |
1455 | last_blk = logical_to_blk(inode, start + len - 1); | |
9a950d52 | 1456 | |
7f63eb77 JK |
1457 | next: |
1458 | memset(&map_bh, 0, sizeof(struct buffer_head)); | |
1459 | map_bh.b_size = len; | |
1460 | ||
e2b4e2bc | 1461 | ret = get_data_block(inode, start_blk, &map_bh, 0, |
da85985c | 1462 | F2FS_GET_BLOCK_FIEMAP, &next_pgofs); |
7f63eb77 JK |
1463 | if (ret) |
1464 | goto out; | |
1465 | ||
1466 | /* HOLE */ | |
1467 | if (!buffer_mapped(&map_bh)) { | |
da85985c | 1468 | start_blk = next_pgofs; |
58736fa6 CY |
1469 | |
1470 | if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, | |
1471 | F2FS_I_SB(inode)->max_file_blocks)) | |
9a950d52 | 1472 | goto prep_next; |
58736fa6 | 1473 | |
9a950d52 FL |
1474 | flags |= FIEMAP_EXTENT_LAST; |
1475 | } | |
7f63eb77 | 1476 | |
da5af127 | 1477 | if (size) { |
62230e0d | 1478 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1479 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1480 | ||
9a950d52 FL |
1481 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1482 | phys, size, flags); | |
da5af127 | 1483 | } |
7f63eb77 | 1484 | |
9a950d52 FL |
1485 | if (start_blk > last_blk || ret) |
1486 | goto out; | |
7f63eb77 | 1487 | |
9a950d52 FL |
1488 | logical = blk_to_logical(inode, start_blk); |
1489 | phys = blk_to_logical(inode, map_bh.b_blocknr); | |
1490 | size = map_bh.b_size; | |
1491 | flags = 0; | |
1492 | if (buffer_unwritten(&map_bh)) | |
1493 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
7f63eb77 | 1494 | |
9a950d52 | 1495 | start_blk += logical_to_blk(inode, size); |
7f63eb77 | 1496 | |
9a950d52 | 1497 | prep_next: |
7f63eb77 JK |
1498 | cond_resched(); |
1499 | if (fatal_signal_pending(current)) | |
1500 | ret = -EINTR; | |
1501 | else | |
1502 | goto next; | |
1503 | out: | |
1504 | if (ret == 1) | |
1505 | ret = 0; | |
1506 | ||
5955102c | 1507 | inode_unlock(inode); |
7f63eb77 | 1508 | return ret; |
9ab70134 JK |
1509 | } |
1510 | ||
f1e88660 JK |
1511 | /* |
1512 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
1513 | * Major change was from block_size == page_size in f2fs by default. | |
e2e59414 JK |
1514 | * |
1515 | * Note that the aops->readpages() function is ONLY used for read-ahead. If | |
1516 | * this function ever deviates from doing just read-ahead, it should either | |
1517 | * use ->readpage() or do the necessary surgery to decouple ->readpages() | |
1518 | * from read-ahead. | |
f1e88660 JK |
1519 | */ |
1520 | static int f2fs_mpage_readpages(struct address_space *mapping, | |
1521 | struct list_head *pages, struct page *page, | |
e2e59414 | 1522 | unsigned nr_pages, bool is_readahead) |
f1e88660 JK |
1523 | { |
1524 | struct bio *bio = NULL; | |
f1e88660 JK |
1525 | sector_t last_block_in_bio = 0; |
1526 | struct inode *inode = mapping->host; | |
1527 | const unsigned blkbits = inode->i_blkbits; | |
1528 | const unsigned blocksize = 1 << blkbits; | |
1529 | sector_t block_in_file; | |
1530 | sector_t last_block; | |
1531 | sector_t last_block_in_file; | |
1532 | sector_t block_nr; | |
f1e88660 JK |
1533 | struct f2fs_map_blocks map; |
1534 | ||
1535 | map.m_pblk = 0; | |
1536 | map.m_lblk = 0; | |
1537 | map.m_len = 0; | |
1538 | map.m_flags = 0; | |
da85985c | 1539 | map.m_next_pgofs = NULL; |
c4020b2d | 1540 | map.m_next_extent = NULL; |
d5097be5 | 1541 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 1542 | map.m_may_create = false; |
f1e88660 | 1543 | |
736c0a74 | 1544 | for (; nr_pages; nr_pages--) { |
f1e88660 | 1545 | if (pages) { |
939afa94 | 1546 | page = list_last_entry(pages, struct page, lru); |
a83d50bc KM |
1547 | |
1548 | prefetchw(&page->flags); | |
f1e88660 JK |
1549 | list_del(&page->lru); |
1550 | if (add_to_page_cache_lru(page, mapping, | |
8a5c743e MH |
1551 | page->index, |
1552 | readahead_gfp_mask(mapping))) | |
f1e88660 JK |
1553 | goto next_page; |
1554 | } | |
1555 | ||
1556 | block_in_file = (sector_t)page->index; | |
1557 | last_block = block_in_file + nr_pages; | |
1558 | last_block_in_file = (i_size_read(inode) + blocksize - 1) >> | |
1559 | blkbits; | |
1560 | if (last_block > last_block_in_file) | |
1561 | last_block = last_block_in_file; | |
1562 | ||
86109c90 CY |
1563 | /* just zeroing out page which is beyond EOF */ |
1564 | if (block_in_file >= last_block) | |
1565 | goto zero_out; | |
f1e88660 JK |
1566 | /* |
1567 | * Map blocks using the previous result first. | |
1568 | */ | |
1569 | if ((map.m_flags & F2FS_MAP_MAPPED) && | |
1570 | block_in_file > map.m_lblk && | |
1571 | block_in_file < (map.m_lblk + map.m_len)) | |
1572 | goto got_it; | |
1573 | ||
1574 | /* | |
1575 | * Then do more f2fs_map_blocks() calls until we are | |
1576 | * done with this page. | |
1577 | */ | |
86109c90 CY |
1578 | map.m_lblk = block_in_file; |
1579 | map.m_len = last_block - block_in_file; | |
f1e88660 | 1580 | |
86109c90 CY |
1581 | if (f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT)) |
1582 | goto set_error_page; | |
f1e88660 JK |
1583 | got_it: |
1584 | if ((map.m_flags & F2FS_MAP_MAPPED)) { | |
1585 | block_nr = map.m_pblk + block_in_file - map.m_lblk; | |
1586 | SetPageMappedToDisk(page); | |
1587 | ||
1588 | if (!PageUptodate(page) && !cleancache_get_page(page)) { | |
1589 | SetPageUptodate(page); | |
1590 | goto confused; | |
1591 | } | |
c9b60788 CY |
1592 | |
1593 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
1594 | DATA_GENERIC)) | |
1595 | goto set_error_page; | |
f1e88660 | 1596 | } else { |
86109c90 | 1597 | zero_out: |
09cbfeaf | 1598 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1599 | if (!PageUptodate(page)) |
1600 | SetPageUptodate(page); | |
f1e88660 JK |
1601 | unlock_page(page); |
1602 | goto next_page; | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * This page will go to BIO. Do we need to send this | |
1607 | * BIO off first? | |
1608 | */ | |
3c62be17 JK |
1609 | if (bio && (last_block_in_bio != block_nr - 1 || |
1610 | !__same_bdev(F2FS_I_SB(inode), block_nr, bio))) { | |
f1e88660 | 1611 | submit_and_realloc: |
4fc29c1a | 1612 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1613 | bio = NULL; |
1614 | } | |
1615 | if (bio == NULL) { | |
e2e59414 JK |
1616 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, |
1617 | is_readahead ? REQ_RAHEAD : 0); | |
1d353eb7 JK |
1618 | if (IS_ERR(bio)) { |
1619 | bio = NULL; | |
f1e88660 | 1620 | goto set_error_page; |
4375a336 | 1621 | } |
f1e88660 JK |
1622 | } |
1623 | ||
0ded69f6 JK |
1624 | /* |
1625 | * If the page is under writeback, we need to wait for | |
1626 | * its completion to see the correct decrypted data. | |
1627 | */ | |
1628 | f2fs_wait_on_block_writeback(inode, block_nr); | |
1629 | ||
f1e88660 JK |
1630 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
1631 | goto submit_and_realloc; | |
1632 | ||
5f9abab4 | 1633 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); |
fb7d70db | 1634 | ClearPageError(page); |
f1e88660 JK |
1635 | last_block_in_bio = block_nr; |
1636 | goto next_page; | |
1637 | set_error_page: | |
1638 | SetPageError(page); | |
09cbfeaf | 1639 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 JK |
1640 | unlock_page(page); |
1641 | goto next_page; | |
1642 | confused: | |
1643 | if (bio) { | |
4fc29c1a | 1644 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1645 | bio = NULL; |
1646 | } | |
1647 | unlock_page(page); | |
1648 | next_page: | |
1649 | if (pages) | |
09cbfeaf | 1650 | put_page(page); |
f1e88660 JK |
1651 | } |
1652 | BUG_ON(pages && !list_empty(pages)); | |
1653 | if (bio) | |
4fc29c1a | 1654 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
f1e88660 JK |
1655 | return 0; |
1656 | } | |
1657 | ||
eb47b800 JK |
1658 | static int f2fs_read_data_page(struct file *file, struct page *page) |
1659 | { | |
9ffe0fb5 | 1660 | struct inode *inode = page->mapping->host; |
b3d208f9 | 1661 | int ret = -EAGAIN; |
9ffe0fb5 | 1662 | |
c20e89cd CY |
1663 | trace_f2fs_readpage(page, DATA); |
1664 | ||
e1c42045 | 1665 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
1666 | if (f2fs_has_inline_data(inode)) |
1667 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 1668 | if (ret == -EAGAIN) |
e2e59414 | 1669 | ret = f2fs_mpage_readpages(page->mapping, NULL, page, 1, false); |
9ffe0fb5 | 1670 | return ret; |
eb47b800 JK |
1671 | } |
1672 | ||
1673 | static int f2fs_read_data_pages(struct file *file, | |
1674 | struct address_space *mapping, | |
1675 | struct list_head *pages, unsigned nr_pages) | |
1676 | { | |
71cb4aff | 1677 | struct inode *inode = mapping->host; |
939afa94 | 1678 | struct page *page = list_last_entry(pages, struct page, lru); |
b8c29400 CY |
1679 | |
1680 | trace_f2fs_readpages(inode, page, nr_pages); | |
9ffe0fb5 HL |
1681 | |
1682 | /* If the file has inline data, skip readpages */ | |
1683 | if (f2fs_has_inline_data(inode)) | |
1684 | return 0; | |
1685 | ||
e2e59414 | 1686 | return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true); |
eb47b800 JK |
1687 | } |
1688 | ||
7eab0c0d HP |
1689 | static int encrypt_one_page(struct f2fs_io_info *fio) |
1690 | { | |
1691 | struct inode *inode = fio->page->mapping->host; | |
6aa58d8a | 1692 | struct page *mpage; |
7eab0c0d HP |
1693 | gfp_t gfp_flags = GFP_NOFS; |
1694 | ||
1958593e | 1695 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
1696 | return 0; |
1697 | ||
6dbb1796 | 1698 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 1699 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d HP |
1700 | |
1701 | retry_encrypt: | |
1702 | fio->encrypted_page = fscrypt_encrypt_page(inode, fio->page, | |
1703 | PAGE_SIZE, 0, fio->page->index, gfp_flags); | |
6aa58d8a CY |
1704 | if (IS_ERR(fio->encrypted_page)) { |
1705 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
1706 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
1707 | f2fs_flush_merged_writes(fio->sbi); | |
1708 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
1709 | gfp_flags |= __GFP_NOFAIL; | |
1710 | goto retry_encrypt; | |
1711 | } | |
1712 | return PTR_ERR(fio->encrypted_page); | |
1713 | } | |
7eab0c0d | 1714 | |
6aa58d8a CY |
1715 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
1716 | if (mpage) { | |
1717 | if (PageUptodate(mpage)) | |
1718 | memcpy(page_address(mpage), | |
1719 | page_address(fio->encrypted_page), PAGE_SIZE); | |
1720 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 1721 | } |
6aa58d8a | 1722 | return 0; |
7eab0c0d HP |
1723 | } |
1724 | ||
bb9e3bb8 CY |
1725 | static inline bool check_inplace_update_policy(struct inode *inode, |
1726 | struct f2fs_io_info *fio) | |
7eab0c0d | 1727 | { |
bb9e3bb8 CY |
1728 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1729 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 1730 | |
bb9e3bb8 CY |
1731 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
1732 | return true; | |
4d57b86d | 1733 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
1734 | return true; |
1735 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
1736 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
1737 | return true; | |
4d57b86d | 1738 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
1739 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
1740 | return true; | |
1741 | ||
1742 | /* | |
1743 | * IPU for rewrite async pages | |
1744 | */ | |
1745 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
1746 | fio && fio->op == REQ_OP_WRITE && | |
1747 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 1748 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
1749 | return true; |
1750 | ||
1751 | /* this is only set during fdatasync */ | |
1752 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
1753 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
1754 | return true; | |
1755 | ||
4354994f DR |
1756 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1757 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1758 | return true; | |
1759 | ||
bb9e3bb8 CY |
1760 | return false; |
1761 | } | |
1762 | ||
4d57b86d | 1763 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 1764 | { |
1ad71a27 JK |
1765 | if (f2fs_is_pinned_file(inode)) |
1766 | return true; | |
bb9e3bb8 CY |
1767 | |
1768 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
1769 | if (file_is_cold(inode)) | |
1770 | return true; | |
1771 | ||
1772 | return check_inplace_update_policy(inode, fio); | |
1773 | } | |
1774 | ||
4d57b86d | 1775 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
1776 | { |
1777 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1778 | ||
1779 | if (test_opt(sbi, LFS)) | |
1780 | return true; | |
1781 | if (S_ISDIR(inode->i_mode)) | |
1782 | return true; | |
af033b2a CY |
1783 | if (IS_NOQUOTA(inode)) |
1784 | return true; | |
bb9e3bb8 CY |
1785 | if (f2fs_is_atomic_file(inode)) |
1786 | return true; | |
1787 | if (fio) { | |
1788 | if (is_cold_data(fio->page)) | |
1789 | return true; | |
1790 | if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) | |
1791 | return true; | |
4354994f DR |
1792 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1793 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1794 | return true; | |
bb9e3bb8 CY |
1795 | } |
1796 | return false; | |
1797 | } | |
1798 | ||
7eab0c0d HP |
1799 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
1800 | { | |
1801 | struct inode *inode = fio->page->mapping->host; | |
1802 | ||
4d57b86d | 1803 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
1804 | return false; |
1805 | ||
4d57b86d | 1806 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
1807 | } |
1808 | ||
4d57b86d | 1809 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 1810 | { |
05ca3632 | 1811 | struct page *page = fio->page; |
eb47b800 | 1812 | struct inode *inode = page->mapping->host; |
eb47b800 | 1813 | struct dnode_of_data dn; |
e959c8f5 | 1814 | struct extent_info ei = {0,0,0}; |
7735730d | 1815 | struct node_info ni; |
e959c8f5 | 1816 | bool ipu_force = false; |
eb47b800 JK |
1817 | int err = 0; |
1818 | ||
1819 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
1820 | if (need_inplace_update(fio) && |
1821 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
1822 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 1823 | |
c9b60788 CY |
1824 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
1825 | DATA_GENERIC)) | |
1826 | return -EFAULT; | |
1827 | ||
1828 | ipu_force = true; | |
1829 | fio->need_lock = LOCK_DONE; | |
1830 | goto got_it; | |
e959c8f5 | 1831 | } |
279d6df2 | 1832 | |
d29460e5 JK |
1833 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
1834 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
1835 | return -EAGAIN; | |
279d6df2 | 1836 | |
4d57b86d | 1837 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 1838 | if (err) |
279d6df2 | 1839 | goto out; |
eb47b800 | 1840 | |
28bc106b | 1841 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
1842 | |
1843 | /* This page is already truncated */ | |
7a9d7548 | 1844 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 1845 | ClearPageUptodate(page); |
2baf0781 | 1846 | clear_cold_data(page); |
eb47b800 | 1847 | goto out_writepage; |
2bca1e23 | 1848 | } |
e959c8f5 | 1849 | got_it: |
c9b60788 CY |
1850 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
1851 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
1852 | DATA_GENERIC)) { | |
1853 | err = -EFAULT; | |
1854 | goto out_writepage; | |
1855 | } | |
eb47b800 JK |
1856 | /* |
1857 | * If current allocation needs SSR, | |
1858 | * it had better in-place writes for updated data. | |
1859 | */ | |
e1da7872 | 1860 | if (ipu_force || (is_valid_data_blkaddr(fio->sbi, fio->old_blkaddr) && |
7b525dd0 | 1861 | need_inplace_update(fio))) { |
cc15620b JK |
1862 | err = encrypt_one_page(fio); |
1863 | if (err) | |
1864 | goto out_writepage; | |
1865 | ||
1866 | set_page_writeback(page); | |
17c50035 | 1867 | ClearPageError(page); |
279d6df2 | 1868 | f2fs_put_dnode(&dn); |
cc15620b | 1869 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 1870 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 1871 | err = f2fs_inplace_write_data(fio); |
6492a335 CY |
1872 | if (err) { |
1873 | if (f2fs_encrypted_file(inode)) | |
1874 | fscrypt_pullback_bio_page(&fio->encrypted_page, | |
1875 | true); | |
1876 | if (PageWriteback(page)) | |
1877 | end_page_writeback(page); | |
1878 | } | |
7eab0c0d | 1879 | trace_f2fs_do_write_data_page(fio->page, IPU); |
91942321 | 1880 | set_inode_flag(inode, FI_UPDATE_WRITE); |
279d6df2 | 1881 | return err; |
eb47b800 | 1882 | } |
279d6df2 | 1883 | |
cc15620b JK |
1884 | if (fio->need_lock == LOCK_RETRY) { |
1885 | if (!f2fs_trylock_op(fio->sbi)) { | |
1886 | err = -EAGAIN; | |
1887 | goto out_writepage; | |
1888 | } | |
1889 | fio->need_lock = LOCK_REQ; | |
1890 | } | |
1891 | ||
7735730d CY |
1892 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
1893 | if (err) | |
1894 | goto out_writepage; | |
1895 | ||
1896 | fio->version = ni.version; | |
1897 | ||
cc15620b JK |
1898 | err = encrypt_one_page(fio); |
1899 | if (err) | |
1900 | goto out_writepage; | |
1901 | ||
1902 | set_page_writeback(page); | |
17c50035 | 1903 | ClearPageError(page); |
cc15620b | 1904 | |
279d6df2 | 1905 | /* LFS mode write path */ |
4d57b86d | 1906 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
1907 | trace_f2fs_do_write_data_page(page, OPU); |
1908 | set_inode_flag(inode, FI_APPEND_WRITE); | |
1909 | if (page->index == 0) | |
1910 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
1911 | out_writepage: |
1912 | f2fs_put_dnode(&dn); | |
279d6df2 | 1913 | out: |
cc15620b | 1914 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 1915 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
1916 | return err; |
1917 | } | |
1918 | ||
d68f735b | 1919 | static int __write_data_page(struct page *page, bool *submitted, |
b0af6d49 CY |
1920 | struct writeback_control *wbc, |
1921 | enum iostat_type io_type) | |
eb47b800 JK |
1922 | { |
1923 | struct inode *inode = page->mapping->host; | |
4081363f | 1924 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 JK |
1925 | loff_t i_size = i_size_read(inode); |
1926 | const pgoff_t end_index = ((unsigned long long) i_size) | |
09cbfeaf | 1927 | >> PAGE_SHIFT; |
26de9b11 | 1928 | loff_t psize = (page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 1929 | unsigned offset = 0; |
39936837 | 1930 | bool need_balance_fs = false; |
eb47b800 | 1931 | int err = 0; |
458e6197 | 1932 | struct f2fs_io_info fio = { |
05ca3632 | 1933 | .sbi = sbi, |
39d787be | 1934 | .ino = inode->i_ino, |
458e6197 | 1935 | .type = DATA, |
04d328de | 1936 | .op = REQ_OP_WRITE, |
7637241e | 1937 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 1938 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 1939 | .page = page, |
4375a336 | 1940 | .encrypted_page = NULL, |
d68f735b | 1941 | .submitted = false, |
cc15620b | 1942 | .need_lock = LOCK_RETRY, |
b0af6d49 | 1943 | .io_type = io_type, |
578c6478 | 1944 | .io_wbc = wbc, |
458e6197 | 1945 | }; |
eb47b800 | 1946 | |
ecda0de3 CY |
1947 | trace_f2fs_writepage(page, DATA); |
1948 | ||
db198ae0 CY |
1949 | /* we should bypass data pages to proceed the kworkder jobs */ |
1950 | if (unlikely(f2fs_cp_error(sbi))) { | |
1951 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
1952 | /* |
1953 | * don't drop any dirty dentry pages for keeping lastest | |
1954 | * directory structure. | |
1955 | */ | |
1956 | if (S_ISDIR(inode->i_mode)) | |
1957 | goto redirty_out; | |
db198ae0 CY |
1958 | goto out; |
1959 | } | |
1960 | ||
0771fcc7 CY |
1961 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
1962 | goto redirty_out; | |
1963 | ||
eb47b800 | 1964 | if (page->index < end_index) |
39936837 | 1965 | goto write; |
eb47b800 JK |
1966 | |
1967 | /* | |
1968 | * If the offset is out-of-range of file size, | |
1969 | * this page does not have to be written to disk. | |
1970 | */ | |
09cbfeaf | 1971 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 1972 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 1973 | goto out; |
eb47b800 | 1974 | |
09cbfeaf | 1975 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 1976 | write: |
1e84371f JK |
1977 | if (f2fs_is_drop_cache(inode)) |
1978 | goto out; | |
e6e5f561 JK |
1979 | /* we should not write 0'th page having journal header */ |
1980 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
1981 | (!wbc->for_reclaim && | |
4d57b86d | 1982 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 1983 | goto redirty_out; |
eb47b800 | 1984 | |
39936837 | 1985 | /* Dentry blocks are controlled by checkpoint */ |
eb47b800 | 1986 | if (S_ISDIR(inode->i_mode)) { |
cc15620b | 1987 | fio.need_lock = LOCK_DONE; |
4d57b86d | 1988 | err = f2fs_do_write_data_page(&fio); |
8618b881 JK |
1989 | goto done; |
1990 | } | |
9ffe0fb5 | 1991 | |
8618b881 | 1992 | if (!wbc->for_reclaim) |
39936837 | 1993 | need_balance_fs = true; |
7f3037a5 | 1994 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 1995 | goto redirty_out; |
ef095d19 JK |
1996 | else |
1997 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 1998 | |
b3d208f9 | 1999 | err = -EAGAIN; |
dd7b2333 | 2000 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2001 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2002 | if (!err) |
2003 | goto out; | |
2004 | } | |
279d6df2 | 2005 | |
cc15620b | 2006 | if (err == -EAGAIN) { |
4d57b86d | 2007 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2008 | if (err == -EAGAIN) { |
2009 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2010 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2011 | } |
2012 | } | |
a0d00fad | 2013 | |
eb449797 CY |
2014 | if (err) { |
2015 | file_set_keep_isize(inode); | |
2016 | } else { | |
2017 | down_write(&F2FS_I(inode)->i_sem); | |
2018 | if (F2FS_I(inode)->last_disk_size < psize) | |
2019 | F2FS_I(inode)->last_disk_size = psize; | |
2020 | up_write(&F2FS_I(inode)->i_sem); | |
2021 | } | |
279d6df2 | 2022 | |
8618b881 JK |
2023 | done: |
2024 | if (err && err != -ENOENT) | |
2025 | goto redirty_out; | |
eb47b800 | 2026 | |
39936837 | 2027 | out: |
a7ffdbe2 | 2028 | inode_dec_dirty_pages(inode); |
2baf0781 | 2029 | if (err) { |
2bca1e23 | 2030 | ClearPageUptodate(page); |
2baf0781 CY |
2031 | clear_cold_data(page); |
2032 | } | |
0c3a5797 CY |
2033 | |
2034 | if (wbc->for_reclaim) { | |
bab475c5 | 2035 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2036 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2037 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2038 | submitted = NULL; |
0c3a5797 CY |
2039 | } |
2040 | ||
eb47b800 | 2041 | unlock_page(page); |
186857c5 CY |
2042 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
2043 | !F2FS_I(inode)->cp_task) | |
a7881893 | 2044 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2045 | |
d68f735b | 2046 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2047 | f2fs_submit_merged_write(sbi, DATA); |
d68f735b JK |
2048 | submitted = NULL; |
2049 | } | |
2050 | ||
2051 | if (submitted) | |
2052 | *submitted = fio.submitted; | |
0c3a5797 | 2053 | |
eb47b800 JK |
2054 | return 0; |
2055 | ||
eb47b800 | 2056 | redirty_out: |
76f60268 | 2057 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2058 | /* |
2059 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2060 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2061 | * file_write_and_wait_range() will see EIO error, which is critical | |
2062 | * to return value of fsync() followed by atomic_write failure to user. | |
2063 | */ | |
2064 | if (!err || wbc->for_reclaim) | |
0002b61b | 2065 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2066 | unlock_page(page); |
2067 | return err; | |
fa9150a8 NJ |
2068 | } |
2069 | ||
f566bae8 JK |
2070 | static int f2fs_write_data_page(struct page *page, |
2071 | struct writeback_control *wbc) | |
2072 | { | |
b0af6d49 | 2073 | return __write_data_page(page, NULL, wbc, FS_DATA_IO); |
f566bae8 JK |
2074 | } |
2075 | ||
8f46dcae CY |
2076 | /* |
2077 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2078 | * The major change is making write step of cold data page separately from | |
2079 | * warm/hot data page. | |
2080 | */ | |
2081 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2082 | struct writeback_control *wbc, |
2083 | enum iostat_type io_type) | |
8f46dcae CY |
2084 | { |
2085 | int ret = 0; | |
2086 | int done = 0; | |
2087 | struct pagevec pvec; | |
c29fd0c0 | 2088 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8f46dcae CY |
2089 | int nr_pages; |
2090 | pgoff_t uninitialized_var(writeback_index); | |
2091 | pgoff_t index; | |
2092 | pgoff_t end; /* Inclusive */ | |
2093 | pgoff_t done_index; | |
2094 | int cycled; | |
2095 | int range_whole = 0; | |
10bbd235 | 2096 | xa_mark_t tag; |
bab475c5 | 2097 | int nwritten = 0; |
8f46dcae | 2098 | |
86679820 | 2099 | pagevec_init(&pvec); |
46ae957f | 2100 | |
ef095d19 JK |
2101 | if (get_dirty_pages(mapping->host) <= |
2102 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2103 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2104 | else | |
2105 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2106 | ||
8f46dcae CY |
2107 | if (wbc->range_cyclic) { |
2108 | writeback_index = mapping->writeback_index; /* prev offset */ | |
2109 | index = writeback_index; | |
2110 | if (index == 0) | |
2111 | cycled = 1; | |
2112 | else | |
2113 | cycled = 0; | |
2114 | end = -1; | |
2115 | } else { | |
09cbfeaf KS |
2116 | index = wbc->range_start >> PAGE_SHIFT; |
2117 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2118 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2119 | range_whole = 1; | |
2120 | cycled = 1; /* ignore range_cyclic tests */ | |
2121 | } | |
2122 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2123 | tag = PAGECACHE_TAG_TOWRITE; | |
2124 | else | |
2125 | tag = PAGECACHE_TAG_DIRTY; | |
2126 | retry: | |
2127 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2128 | tag_pages_for_writeback(mapping, index, end); | |
2129 | done_index = index; | |
2130 | while (!done && (index <= end)) { | |
2131 | int i; | |
2132 | ||
69c4f35d | 2133 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2134 | tag); |
8f46dcae CY |
2135 | if (nr_pages == 0) |
2136 | break; | |
2137 | ||
2138 | for (i = 0; i < nr_pages; i++) { | |
2139 | struct page *page = pvec.pages[i]; | |
d68f735b | 2140 | bool submitted = false; |
8f46dcae | 2141 | |
f8de4331 | 2142 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2143 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2144 | wbc->sync_mode == WB_SYNC_NONE) { |
2145 | done = 1; | |
2146 | break; | |
2147 | } | |
2148 | ||
8f46dcae | 2149 | done_index = page->index; |
d29460e5 | 2150 | retry_write: |
8f46dcae CY |
2151 | lock_page(page); |
2152 | ||
2153 | if (unlikely(page->mapping != mapping)) { | |
2154 | continue_unlock: | |
2155 | unlock_page(page); | |
2156 | continue; | |
2157 | } | |
2158 | ||
2159 | if (!PageDirty(page)) { | |
2160 | /* someone wrote it for us */ | |
2161 | goto continue_unlock; | |
2162 | } | |
2163 | ||
8f46dcae CY |
2164 | if (PageWriteback(page)) { |
2165 | if (wbc->sync_mode != WB_SYNC_NONE) | |
fec1d657 | 2166 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 2167 | DATA, true, true); |
8f46dcae CY |
2168 | else |
2169 | goto continue_unlock; | |
2170 | } | |
2171 | ||
8f46dcae CY |
2172 | if (!clear_page_dirty_for_io(page)) |
2173 | goto continue_unlock; | |
2174 | ||
b0af6d49 | 2175 | ret = __write_data_page(page, &submitted, wbc, io_type); |
8f46dcae | 2176 | if (unlikely(ret)) { |
0002b61b CY |
2177 | /* |
2178 | * keep nr_to_write, since vfs uses this to | |
2179 | * get # of written pages. | |
2180 | */ | |
2181 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
2182 | unlock_page(page); | |
2183 | ret = 0; | |
2184 | continue; | |
d29460e5 JK |
2185 | } else if (ret == -EAGAIN) { |
2186 | ret = 0; | |
2187 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
2188 | cond_resched(); | |
2189 | congestion_wait(BLK_RW_ASYNC, | |
2190 | HZ/50); | |
2191 | goto retry_write; | |
2192 | } | |
2193 | continue; | |
0002b61b | 2194 | } |
b230e6ca JK |
2195 | done_index = page->index + 1; |
2196 | done = 1; | |
2197 | break; | |
d68f735b | 2198 | } else if (submitted) { |
bab475c5 | 2199 | nwritten++; |
8f46dcae CY |
2200 | } |
2201 | ||
f8de4331 | 2202 | if (--wbc->nr_to_write <= 0 && |
687de7f1 | 2203 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
2204 | done = 1; |
2205 | break; | |
2206 | } | |
2207 | } | |
2208 | pagevec_release(&pvec); | |
2209 | cond_resched(); | |
2210 | } | |
2211 | ||
8f46dcae CY |
2212 | if (!cycled && !done) { |
2213 | cycled = 1; | |
2214 | index = 0; | |
2215 | end = writeback_index - 1; | |
2216 | goto retry; | |
2217 | } | |
2218 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) | |
2219 | mapping->writeback_index = done_index; | |
2220 | ||
bab475c5 | 2221 | if (nwritten) |
b9109b0e | 2222 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 2223 | NULL, 0, DATA); |
6ca56ca4 | 2224 | |
8f46dcae CY |
2225 | return ret; |
2226 | } | |
2227 | ||
853137ce JK |
2228 | static inline bool __should_serialize_io(struct inode *inode, |
2229 | struct writeback_control *wbc) | |
2230 | { | |
2231 | if (!S_ISREG(inode->i_mode)) | |
2232 | return false; | |
af033b2a CY |
2233 | if (IS_NOQUOTA(inode)) |
2234 | return false; | |
853137ce JK |
2235 | if (wbc->sync_mode != WB_SYNC_ALL) |
2236 | return true; | |
2237 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
2238 | return true; | |
2239 | return false; | |
2240 | } | |
2241 | ||
fc99fe27 | 2242 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
2243 | struct writeback_control *wbc, |
2244 | enum iostat_type io_type) | |
eb47b800 JK |
2245 | { |
2246 | struct inode *inode = mapping->host; | |
4081363f | 2247 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 2248 | struct blk_plug plug; |
eb47b800 | 2249 | int ret; |
853137ce | 2250 | bool locked = false; |
eb47b800 | 2251 | |
cfb185a1 | 2252 | /* deal with chardevs and other special file */ |
2253 | if (!mapping->a_ops->writepage) | |
2254 | return 0; | |
2255 | ||
6a290544 CY |
2256 | /* skip writing if there is no dirty page in this inode */ |
2257 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
2258 | return 0; | |
2259 | ||
0771fcc7 CY |
2260 | /* during POR, we don't need to trigger writepage at all. */ |
2261 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
2262 | goto skip_write; | |
2263 | ||
af033b2a CY |
2264 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
2265 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 2266 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 2267 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
2268 | goto skip_write; |
2269 | ||
d323d005 | 2270 | /* skip writing during file defragment */ |
91942321 | 2271 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
2272 | goto skip_write; |
2273 | ||
d31c7c3f YH |
2274 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
2275 | ||
687de7f1 JK |
2276 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
2277 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
2278 | atomic_inc(&sbi->wb_sync_req[DATA]); |
2279 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
2280 | goto skip_write; |
2281 | ||
853137ce JK |
2282 | if (__should_serialize_io(inode, wbc)) { |
2283 | mutex_lock(&sbi->writepages); | |
2284 | locked = true; | |
2285 | } | |
2286 | ||
9dfa1baf | 2287 | blk_start_plug(&plug); |
b0af6d49 | 2288 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 2289 | blk_finish_plug(&plug); |
687de7f1 | 2290 | |
853137ce JK |
2291 | if (locked) |
2292 | mutex_unlock(&sbi->writepages); | |
2293 | ||
687de7f1 | 2294 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 2295 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
2296 | /* |
2297 | * if some pages were truncated, we cannot guarantee its mapping->host | |
2298 | * to detect pending bios. | |
2299 | */ | |
458e6197 | 2300 | |
4d57b86d | 2301 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 2302 | return ret; |
d3baf95d JK |
2303 | |
2304 | skip_write: | |
a7ffdbe2 | 2305 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 2306 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 2307 | return 0; |
eb47b800 JK |
2308 | } |
2309 | ||
b0af6d49 CY |
2310 | static int f2fs_write_data_pages(struct address_space *mapping, |
2311 | struct writeback_control *wbc) | |
2312 | { | |
2313 | struct inode *inode = mapping->host; | |
2314 | ||
2315 | return __f2fs_write_data_pages(mapping, wbc, | |
2316 | F2FS_I(inode)->cp_task == current ? | |
2317 | FS_CP_DATA_IO : FS_DATA_IO); | |
2318 | } | |
2319 | ||
3aab8f82 CY |
2320 | static void f2fs_write_failed(struct address_space *mapping, loff_t to) |
2321 | { | |
2322 | struct inode *inode = mapping->host; | |
819d9153 | 2323 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 2324 | |
819d9153 | 2325 | if (to > i_size) { |
a33c1502 | 2326 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 2327 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 2328 | |
819d9153 | 2329 | truncate_pagecache(inode, i_size); |
c42d28ce CY |
2330 | if (!IS_NOQUOTA(inode)) |
2331 | f2fs_truncate_blocks(inode, i_size, true); | |
a33c1502 | 2332 | |
5a3a2d83 | 2333 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 2334 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
2335 | } |
2336 | } | |
2337 | ||
2aadac08 JK |
2338 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
2339 | struct page *page, loff_t pos, unsigned len, | |
2340 | block_t *blk_addr, bool *node_changed) | |
2341 | { | |
2342 | struct inode *inode = page->mapping->host; | |
2343 | pgoff_t index = page->index; | |
2344 | struct dnode_of_data dn; | |
2345 | struct page *ipage; | |
b4d07a3e | 2346 | bool locked = false; |
e15882b6 | 2347 | struct extent_info ei = {0,0,0}; |
2aadac08 | 2348 | int err = 0; |
2866fb16 | 2349 | int flag; |
2aadac08 | 2350 | |
24b84912 JK |
2351 | /* |
2352 | * we already allocated all the blocks, so we don't need to get | |
2353 | * the block addresses when there is no need to fill the page. | |
2354 | */ | |
dc91de78 JK |
2355 | if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && |
2356 | !is_inode_flag_set(inode, FI_NO_PREALLOC)) | |
24b84912 JK |
2357 | return 0; |
2358 | ||
2866fb16 SY |
2359 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
2360 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
2361 | flag = F2FS_GET_BLOCK_DEFAULT; | |
2362 | else | |
2363 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
2364 | ||
b4d07a3e | 2365 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 2366 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
2866fb16 | 2367 | __do_map_lock(sbi, flag, true); |
b4d07a3e JK |
2368 | locked = true; |
2369 | } | |
2370 | restart: | |
2aadac08 | 2371 | /* check inline_data */ |
4d57b86d | 2372 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
2373 | if (IS_ERR(ipage)) { |
2374 | err = PTR_ERR(ipage); | |
2375 | goto unlock_out; | |
2376 | } | |
2377 | ||
2378 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
2379 | ||
2380 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 2381 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 2382 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 2383 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d CY |
2384 | if (inode->i_nlink) |
2385 | set_inline_node(ipage); | |
2aadac08 JK |
2386 | } else { |
2387 | err = f2fs_convert_inline_page(&dn, page); | |
2388 | if (err) | |
b4d07a3e JK |
2389 | goto out; |
2390 | if (dn.data_blkaddr == NULL_ADDR) | |
2391 | err = f2fs_get_block(&dn, index); | |
2392 | } | |
2393 | } else if (locked) { | |
2394 | err = f2fs_get_block(&dn, index); | |
2395 | } else { | |
2396 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
2397 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
2398 | } else { | |
b4d07a3e | 2399 | /* hole case */ |
4d57b86d | 2400 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 2401 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 2402 | f2fs_put_dnode(&dn); |
59c9081b YH |
2403 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
2404 | true); | |
2866fb16 | 2405 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
2406 | locked = true; |
2407 | goto restart; | |
2408 | } | |
2aadac08 JK |
2409 | } |
2410 | } | |
b4d07a3e | 2411 | |
2aadac08 JK |
2412 | /* convert_inline_page can make node_changed */ |
2413 | *blk_addr = dn.data_blkaddr; | |
2414 | *node_changed = dn.node_changed; | |
b4d07a3e | 2415 | out: |
2aadac08 JK |
2416 | f2fs_put_dnode(&dn); |
2417 | unlock_out: | |
b4d07a3e | 2418 | if (locked) |
2866fb16 | 2419 | __do_map_lock(sbi, flag, false); |
2aadac08 JK |
2420 | return err; |
2421 | } | |
2422 | ||
eb47b800 JK |
2423 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
2424 | loff_t pos, unsigned len, unsigned flags, | |
2425 | struct page **pagep, void **fsdata) | |
2426 | { | |
2427 | struct inode *inode = mapping->host; | |
4081363f | 2428 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 2429 | struct page *page = NULL; |
09cbfeaf | 2430 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 2431 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 2432 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
2433 | int err = 0; |
2434 | ||
62aed044 CY |
2435 | trace_f2fs_write_begin(inode, pos, len, flags); |
2436 | ||
4354994f DR |
2437 | err = f2fs_is_checkpoint_ready(sbi); |
2438 | if (err) | |
2439 | goto fail; | |
2440 | ||
455e3a58 JK |
2441 | if ((f2fs_is_atomic_file(inode) && |
2442 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
2443 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 2444 | err = -ENOMEM; |
a2e2e76b | 2445 | drop_atomic = true; |
57864ae5 JK |
2446 | goto fail; |
2447 | } | |
2448 | ||
5f727395 JK |
2449 | /* |
2450 | * We should check this at this moment to avoid deadlock on inode page | |
2451 | * and #0 page. The locking rule for inline_data conversion should be: | |
2452 | * lock_page(page #0) -> lock_page(inode_page) | |
2453 | */ | |
2454 | if (index != 0) { | |
2455 | err = f2fs_convert_inline_inode(inode); | |
2456 | if (err) | |
2457 | goto fail; | |
2458 | } | |
afcb7ca0 | 2459 | repeat: |
86d54795 JK |
2460 | /* |
2461 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
2462 | * wait_for_stable_page. Will wait that below with our IO control. | |
2463 | */ | |
01eccef7 | 2464 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 2465 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
2466 | if (!page) { |
2467 | err = -ENOMEM; | |
2468 | goto fail; | |
2469 | } | |
d5f66990 | 2470 | |
eb47b800 JK |
2471 | *pagep = page; |
2472 | ||
2aadac08 JK |
2473 | err = prepare_write_begin(sbi, page, pos, len, |
2474 | &blkaddr, &need_balance); | |
9ba69cf9 | 2475 | if (err) |
2aadac08 | 2476 | goto fail; |
9ba69cf9 | 2477 | |
af033b2a CY |
2478 | if (need_balance && !IS_NOQUOTA(inode) && |
2479 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 2480 | unlock_page(page); |
2c4db1a6 | 2481 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
2482 | lock_page(page); |
2483 | if (page->mapping != mapping) { | |
2484 | /* The page got truncated from under us */ | |
2485 | f2fs_put_page(page, 1); | |
2486 | goto repeat; | |
2487 | } | |
2488 | } | |
2489 | ||
bae0ee7a | 2490 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 2491 | |
649d7df2 JK |
2492 | if (len == PAGE_SIZE || PageUptodate(page)) |
2493 | return 0; | |
eb47b800 | 2494 | |
746e2403 YH |
2495 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode)) { |
2496 | zero_user_segment(page, len, PAGE_SIZE); | |
2497 | return 0; | |
2498 | } | |
2499 | ||
2aadac08 | 2500 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 2501 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 2502 | SetPageUptodate(page); |
eb47b800 | 2503 | } else { |
13ba41e3 JK |
2504 | err = f2fs_submit_page_read(inode, page, blkaddr); |
2505 | if (err) | |
78682f79 | 2506 | goto fail; |
d54c795b | 2507 | |
393ff91f | 2508 | lock_page(page); |
6bacf52f | 2509 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
2510 | f2fs_put_page(page, 1); |
2511 | goto repeat; | |
eb47b800 | 2512 | } |
1563ac75 CY |
2513 | if (unlikely(!PageUptodate(page))) { |
2514 | err = -EIO; | |
2515 | goto fail; | |
4375a336 | 2516 | } |
eb47b800 | 2517 | } |
eb47b800 | 2518 | return 0; |
9ba69cf9 | 2519 | |
3aab8f82 | 2520 | fail: |
86531d6b | 2521 | f2fs_put_page(page, 1); |
3aab8f82 | 2522 | f2fs_write_failed(mapping, pos + len); |
a2e2e76b | 2523 | if (drop_atomic) |
4d57b86d | 2524 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 2525 | return err; |
eb47b800 JK |
2526 | } |
2527 | ||
a1dd3c13 JK |
2528 | static int f2fs_write_end(struct file *file, |
2529 | struct address_space *mapping, | |
2530 | loff_t pos, unsigned len, unsigned copied, | |
2531 | struct page *page, void *fsdata) | |
2532 | { | |
2533 | struct inode *inode = page->mapping->host; | |
2534 | ||
dfb2bf38 CY |
2535 | trace_f2fs_write_end(inode, pos, len, copied); |
2536 | ||
649d7df2 JK |
2537 | /* |
2538 | * This should be come from len == PAGE_SIZE, and we expect copied | |
2539 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
2540 | * let generic_perform_write() try to copy data again through copied=0. | |
2541 | */ | |
2542 | if (!PageUptodate(page)) { | |
746e2403 | 2543 | if (unlikely(copied != len)) |
649d7df2 JK |
2544 | copied = 0; |
2545 | else | |
2546 | SetPageUptodate(page); | |
2547 | } | |
2548 | if (!copied) | |
2549 | goto unlock_out; | |
2550 | ||
34ba94ba | 2551 | set_page_dirty(page); |
a1dd3c13 | 2552 | |
fc9581c8 JK |
2553 | if (pos + copied > i_size_read(inode)) |
2554 | f2fs_i_size_write(inode, pos + copied); | |
649d7df2 | 2555 | unlock_out: |
3024c9a1 | 2556 | f2fs_put_page(page, 1); |
d0239e1b | 2557 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
2558 | return copied; |
2559 | } | |
2560 | ||
6f673763 OS |
2561 | static int check_direct_IO(struct inode *inode, struct iov_iter *iter, |
2562 | loff_t offset) | |
944fcfc1 | 2563 | { |
8a56dd96 JK |
2564 | unsigned i_blkbits = READ_ONCE(inode->i_blkbits); |
2565 | unsigned blkbits = i_blkbits; | |
2566 | unsigned blocksize_mask = (1 << blkbits) - 1; | |
2567 | unsigned long align = offset | iov_iter_alignment(iter); | |
2568 | struct block_device *bdev = inode->i_sb->s_bdev; | |
2569 | ||
2570 | if (align & blocksize_mask) { | |
2571 | if (bdev) | |
2572 | blkbits = blksize_bits(bdev_logical_block_size(bdev)); | |
2573 | blocksize_mask = (1 << blkbits) - 1; | |
2574 | if (align & blocksize_mask) | |
2575 | return -EINVAL; | |
2576 | return 1; | |
2577 | } | |
944fcfc1 JK |
2578 | return 0; |
2579 | } | |
2580 | ||
02b16d0a CY |
2581 | static void f2fs_dio_end_io(struct bio *bio) |
2582 | { | |
2583 | struct f2fs_private_dio *dio = bio->bi_private; | |
2584 | ||
2585 | dec_page_count(F2FS_I_SB(dio->inode), | |
2586 | dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
2587 | ||
2588 | bio->bi_private = dio->orig_private; | |
2589 | bio->bi_end_io = dio->orig_end_io; | |
2590 | ||
5222595d | 2591 | kvfree(dio); |
02b16d0a CY |
2592 | |
2593 | bio_endio(bio); | |
2594 | } | |
2595 | ||
2596 | static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode, | |
2597 | loff_t file_offset) | |
2598 | { | |
2599 | struct f2fs_private_dio *dio; | |
2600 | bool write = (bio_op(bio) == REQ_OP_WRITE); | |
02b16d0a CY |
2601 | |
2602 | dio = f2fs_kzalloc(F2FS_I_SB(inode), | |
2603 | sizeof(struct f2fs_private_dio), GFP_NOFS); | |
8e114038 | 2604 | if (!dio) |
02b16d0a | 2605 | goto out; |
02b16d0a CY |
2606 | |
2607 | dio->inode = inode; | |
2608 | dio->orig_end_io = bio->bi_end_io; | |
2609 | dio->orig_private = bio->bi_private; | |
2610 | dio->write = write; | |
2611 | ||
2612 | bio->bi_end_io = f2fs_dio_end_io; | |
2613 | bio->bi_private = dio; | |
2614 | ||
2615 | inc_page_count(F2FS_I_SB(inode), | |
2616 | write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
2617 | ||
2618 | submit_bio(bio); | |
2619 | return; | |
2620 | out: | |
2621 | bio->bi_status = BLK_STS_IOERR; | |
2622 | bio_endio(bio); | |
2623 | } | |
2624 | ||
c8b8e32d | 2625 | static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
eb47b800 | 2626 | { |
b439b103 | 2627 | struct address_space *mapping = iocb->ki_filp->f_mapping; |
3aab8f82 | 2628 | struct inode *inode = mapping->host; |
0cdd3195 | 2629 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f847c699 | 2630 | struct f2fs_inode_info *fi = F2FS_I(inode); |
3aab8f82 | 2631 | size_t count = iov_iter_count(iter); |
c8b8e32d | 2632 | loff_t offset = iocb->ki_pos; |
82e0a5aa | 2633 | int rw = iov_iter_rw(iter); |
3aab8f82 | 2634 | int err; |
0cdd3195 | 2635 | enum rw_hint hint = iocb->ki_hint; |
63189b78 | 2636 | int whint_mode = F2FS_OPTION(sbi).whint_mode; |
f847c699 | 2637 | bool do_opu; |
944fcfc1 | 2638 | |
b439b103 | 2639 | err = check_direct_IO(inode, iter, offset); |
b9d777b8 | 2640 | if (err) |
8a56dd96 | 2641 | return err < 0 ? err : 0; |
9ffe0fb5 | 2642 | |
f847c699 | 2643 | if (f2fs_force_buffered_io(inode, iocb, iter)) |
36abef4e | 2644 | return 0; |
fcc85a4d | 2645 | |
f847c699 CY |
2646 | do_opu = allow_outplace_dio(inode, iocb, iter); |
2647 | ||
5302fb00 | 2648 | trace_f2fs_direct_IO_enter(inode, offset, count, rw); |
70407fad | 2649 | |
0cdd3195 HL |
2650 | if (rw == WRITE && whint_mode == WHINT_MODE_OFF) |
2651 | iocb->ki_hint = WRITE_LIFE_NOT_SET; | |
2652 | ||
f847c699 CY |
2653 | if (iocb->ki_flags & IOCB_NOWAIT) { |
2654 | if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { | |
2655 | iocb->ki_hint = hint; | |
2656 | err = -EAGAIN; | |
2657 | goto out; | |
2658 | } | |
2659 | if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { | |
2660 | up_read(&fi->i_gc_rwsem[rw]); | |
b91050a8 HL |
2661 | iocb->ki_hint = hint; |
2662 | err = -EAGAIN; | |
2663 | goto out; | |
2664 | } | |
f847c699 CY |
2665 | } else { |
2666 | down_read(&fi->i_gc_rwsem[rw]); | |
2667 | if (do_opu) | |
2668 | down_read(&fi->i_gc_rwsem[READ]); | |
b91050a8 HL |
2669 | } |
2670 | ||
02b16d0a | 2671 | err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, |
f9d6d059 CY |
2672 | iter, rw == WRITE ? get_data_block_dio_write : |
2673 | get_data_block_dio, NULL, f2fs_dio_submit_bio, | |
02b16d0a | 2674 | DIO_LOCKING | DIO_SKIP_HOLES); |
f847c699 CY |
2675 | |
2676 | if (do_opu) | |
2677 | up_read(&fi->i_gc_rwsem[READ]); | |
2678 | ||
2679 | up_read(&fi->i_gc_rwsem[rw]); | |
82e0a5aa CY |
2680 | |
2681 | if (rw == WRITE) { | |
0cdd3195 HL |
2682 | if (whint_mode == WHINT_MODE_OFF) |
2683 | iocb->ki_hint = hint; | |
b0af6d49 CY |
2684 | if (err > 0) { |
2685 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
2686 | err); | |
f847c699 CY |
2687 | if (!do_opu) |
2688 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
b0af6d49 | 2689 | } else if (err < 0) { |
6bfc4919 | 2690 | f2fs_write_failed(mapping, offset + count); |
b0af6d49 | 2691 | } |
6bfc4919 | 2692 | } |
70407fad | 2693 | |
b91050a8 | 2694 | out: |
5302fb00 | 2695 | trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); |
70407fad | 2696 | |
3aab8f82 | 2697 | return err; |
eb47b800 JK |
2698 | } |
2699 | ||
487261f3 CY |
2700 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
2701 | unsigned int length) | |
eb47b800 JK |
2702 | { |
2703 | struct inode *inode = page->mapping->host; | |
487261f3 | 2704 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 2705 | |
487261f3 | 2706 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 2707 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
2708 | return; |
2709 | ||
487261f3 | 2710 | if (PageDirty(page)) { |
933439c8 | 2711 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 2712 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 2713 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 2714 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 2715 | } else { |
487261f3 | 2716 | inode_dec_dirty_pages(inode); |
4d57b86d | 2717 | f2fs_remove_dirty_inode(inode); |
933439c8 | 2718 | } |
487261f3 | 2719 | } |
decd36b6 | 2720 | |
2baf0781 CY |
2721 | clear_cold_data(page); |
2722 | ||
decd36b6 | 2723 | if (IS_ATOMIC_WRITTEN_PAGE(page)) |
4d57b86d | 2724 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 2725 | |
240a5915 | 2726 | f2fs_clear_page_private(page); |
eb47b800 JK |
2727 | } |
2728 | ||
487261f3 | 2729 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 2730 | { |
f68daeeb JK |
2731 | /* If this is dirty page, keep PagePrivate */ |
2732 | if (PageDirty(page)) | |
2733 | return 0; | |
2734 | ||
decd36b6 CY |
2735 | /* This is atomic written page, keep Private */ |
2736 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
2737 | return 0; | |
2738 | ||
2baf0781 | 2739 | clear_cold_data(page); |
240a5915 | 2740 | f2fs_clear_page_private(page); |
c3850aa1 | 2741 | return 1; |
eb47b800 JK |
2742 | } |
2743 | ||
2744 | static int f2fs_set_data_page_dirty(struct page *page) | |
2745 | { | |
2746 | struct address_space *mapping = page->mapping; | |
2747 | struct inode *inode = mapping->host; | |
2748 | ||
26c6b887 JK |
2749 | trace_f2fs_set_page_dirty(page, DATA); |
2750 | ||
237c0790 JK |
2751 | if (!PageUptodate(page)) |
2752 | SetPageUptodate(page); | |
34ba94ba | 2753 | |
5fe45743 | 2754 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
decd36b6 | 2755 | if (!IS_ATOMIC_WRITTEN_PAGE(page)) { |
4d57b86d | 2756 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
2757 | return 1; |
2758 | } | |
2759 | /* | |
2760 | * Previously, this page has been registered, we just | |
2761 | * return here. | |
2762 | */ | |
2763 | return 0; | |
34ba94ba JK |
2764 | } |
2765 | ||
eb47b800 | 2766 | if (!PageDirty(page)) { |
b87078ad | 2767 | __set_page_dirty_nobuffers(page); |
4d57b86d | 2768 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
2769 | return 1; |
2770 | } | |
2771 | return 0; | |
2772 | } | |
2773 | ||
c01e54b7 JK |
2774 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
2775 | { | |
454ae7e5 CY |
2776 | struct inode *inode = mapping->host; |
2777 | ||
1d373a0e JK |
2778 | if (f2fs_has_inline_data(inode)) |
2779 | return 0; | |
2780 | ||
2781 | /* make sure allocating whole blocks */ | |
2782 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
2783 | filemap_write_and_wait(mapping); | |
2784 | ||
e2b4e2bc | 2785 | return generic_block_bmap(mapping, block, get_data_block_bmap); |
429511cd CY |
2786 | } |
2787 | ||
5b7a487c WG |
2788 | #ifdef CONFIG_MIGRATION |
2789 | #include <linux/migrate.h> | |
2790 | ||
2791 | int f2fs_migrate_page(struct address_space *mapping, | |
2792 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
2793 | { | |
2794 | int rc, extra_count; | |
2795 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
2796 | bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); | |
2797 | ||
2798 | BUG_ON(PageWriteback(page)); | |
2799 | ||
2800 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
2801 | if (atomic_written) { |
2802 | if (mode != MIGRATE_SYNC) | |
2803 | return -EBUSY; | |
2804 | if (!mutex_trylock(&fi->inmem_lock)) | |
2805 | return -EAGAIN; | |
2806 | } | |
5b7a487c | 2807 | |
240a5915 CY |
2808 | /* one extra reference was held for atomic_write page */ |
2809 | extra_count = atomic_written ? 1 : 0; | |
5b7a487c | 2810 | rc = migrate_page_move_mapping(mapping, newpage, |
ab41ee68 | 2811 | page, mode, extra_count); |
5b7a487c WG |
2812 | if (rc != MIGRATEPAGE_SUCCESS) { |
2813 | if (atomic_written) | |
2814 | mutex_unlock(&fi->inmem_lock); | |
2815 | return rc; | |
2816 | } | |
2817 | ||
2818 | if (atomic_written) { | |
2819 | struct inmem_pages *cur; | |
2820 | list_for_each_entry(cur, &fi->inmem_pages, list) | |
2821 | if (cur->page == page) { | |
2822 | cur->page = newpage; | |
2823 | break; | |
2824 | } | |
2825 | mutex_unlock(&fi->inmem_lock); | |
2826 | put_page(page); | |
2827 | get_page(newpage); | |
2828 | } | |
2829 | ||
240a5915 CY |
2830 | if (PagePrivate(page)) { |
2831 | f2fs_set_page_private(newpage, page_private(page)); | |
2832 | f2fs_clear_page_private(page); | |
2833 | } | |
5b7a487c | 2834 | |
2916ecc0 JG |
2835 | if (mode != MIGRATE_SYNC_NO_COPY) |
2836 | migrate_page_copy(newpage, page); | |
2837 | else | |
2838 | migrate_page_states(newpage, page); | |
5b7a487c WG |
2839 | |
2840 | return MIGRATEPAGE_SUCCESS; | |
2841 | } | |
2842 | #endif | |
2843 | ||
eb47b800 JK |
2844 | const struct address_space_operations f2fs_dblock_aops = { |
2845 | .readpage = f2fs_read_data_page, | |
2846 | .readpages = f2fs_read_data_pages, | |
2847 | .writepage = f2fs_write_data_page, | |
2848 | .writepages = f2fs_write_data_pages, | |
2849 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 2850 | .write_end = f2fs_write_end, |
eb47b800 | 2851 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
2852 | .invalidatepage = f2fs_invalidate_page, |
2853 | .releasepage = f2fs_release_page, | |
eb47b800 | 2854 | .direct_IO = f2fs_direct_IO, |
c01e54b7 | 2855 | .bmap = f2fs_bmap, |
5b7a487c WG |
2856 | #ifdef CONFIG_MIGRATION |
2857 | .migratepage = f2fs_migrate_page, | |
2858 | #endif | |
eb47b800 | 2859 | }; |
6dbb1796 | 2860 | |
5ec2d99d | 2861 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
2862 | { |
2863 | struct address_space *mapping = page_mapping(page); | |
2864 | unsigned long flags; | |
2865 | ||
2866 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 2867 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
2868 | PAGECACHE_TAG_DIRTY); |
2869 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
2870 | } | |
2871 | ||
6dbb1796 EB |
2872 | int __init f2fs_init_post_read_processing(void) |
2873 | { | |
2874 | bio_post_read_ctx_cache = KMEM_CACHE(bio_post_read_ctx, 0); | |
2875 | if (!bio_post_read_ctx_cache) | |
2876 | goto fail; | |
2877 | bio_post_read_ctx_pool = | |
2878 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
2879 | bio_post_read_ctx_cache); | |
2880 | if (!bio_post_read_ctx_pool) | |
2881 | goto fail_free_cache; | |
2882 | return 0; | |
2883 | ||
2884 | fail_free_cache: | |
2885 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
2886 | fail: | |
2887 | return -ENOMEM; | |
2888 | } | |
2889 | ||
2890 | void __exit f2fs_destroy_post_read_processing(void) | |
2891 | { | |
2892 | mempool_destroy(bio_post_read_ctx_pool); | |
2893 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
2894 | } |