Commit | Line | Data |
---|---|---|
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> | |
4969c06a | 17 | #include <linux/swap.h> |
690e4a3e | 18 | #include <linux/prefetch.h> |
e2e40f2c | 19 | #include <linux/uio.h> |
f1e88660 | 20 | #include <linux/cleancache.h> |
174cd4b1 | 21 | #include <linux/sched/signal.h> |
eb47b800 JK |
22 | |
23 | #include "f2fs.h" | |
24 | #include "node.h" | |
25 | #include "segment.h" | |
db9f7c1a | 26 | #include "trace.h" |
848753aa | 27 | #include <trace/events/f2fs.h> |
eb47b800 | 28 | |
6dbb1796 EB |
29 | #define NUM_PREALLOC_POST_READ_CTXS 128 |
30 | ||
31 | static struct kmem_cache *bio_post_read_ctx_cache; | |
32 | static mempool_t *bio_post_read_ctx_pool; | |
33 | ||
36951b38 CY |
34 | static bool __is_cp_guaranteed(struct page *page) |
35 | { | |
36 | struct address_space *mapping = page->mapping; | |
37 | struct inode *inode; | |
38 | struct f2fs_sb_info *sbi; | |
39 | ||
40 | if (!mapping) | |
41 | return false; | |
42 | ||
43 | inode = mapping->host; | |
44 | sbi = F2FS_I_SB(inode); | |
45 | ||
46 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
47 | inode->i_ino == F2FS_NODE_INO(sbi) || | |
48 | S_ISDIR(inode->i_mode) || | |
e7a4feb0 | 49 | (S_ISREG(inode->i_mode) && |
af033b2a | 50 | (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || |
36951b38 CY |
51 | is_cold_data(page)) |
52 | return true; | |
53 | return false; | |
54 | } | |
55 | ||
5f9abab4 JK |
56 | static enum count_type __read_io_type(struct page *page) |
57 | { | |
4969c06a | 58 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
59 | |
60 | if (mapping) { | |
61 | struct inode *inode = mapping->host; | |
62 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
63 | ||
64 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
65 | return F2FS_RD_META; | |
66 | ||
67 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
68 | return F2FS_RD_NODE; | |
69 | } | |
70 | return F2FS_RD_DATA; | |
71 | } | |
72 | ||
6dbb1796 EB |
73 | /* postprocessing steps for read bios */ |
74 | enum bio_post_read_step { | |
75 | STEP_INITIAL = 0, | |
76 | STEP_DECRYPT, | |
95ae251f | 77 | STEP_VERITY, |
6dbb1796 EB |
78 | }; |
79 | ||
80 | struct bio_post_read_ctx { | |
81 | struct bio *bio; | |
82 | struct work_struct work; | |
83 | unsigned int cur_step; | |
84 | unsigned int enabled_steps; | |
85 | }; | |
86 | ||
87 | static void __read_end_io(struct bio *bio) | |
93dfe2ac | 88 | { |
6dbb1796 EB |
89 | struct page *page; |
90 | struct bio_vec *bv; | |
6dc4f100 | 91 | struct bvec_iter_all iter_all; |
93dfe2ac | 92 | |
2b070cfe | 93 | bio_for_each_segment_all(bv, bio, iter_all) { |
6dbb1796 EB |
94 | page = bv->bv_page; |
95 | ||
96 | /* PG_error was set if any post_read step failed */ | |
97 | if (bio->bi_status || PageError(page)) { | |
98 | ClearPageUptodate(page); | |
fb7d70db JK |
99 | /* will re-read again later */ |
100 | ClearPageError(page); | |
6dbb1796 EB |
101 | } else { |
102 | SetPageUptodate(page); | |
103 | } | |
5f9abab4 | 104 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
105 | unlock_page(page); |
106 | } | |
107 | if (bio->bi_private) | |
108 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
109 | bio_put(bio); | |
110 | } | |
111 | ||
112 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx); | |
113 | ||
114 | static void decrypt_work(struct work_struct *work) | |
115 | { | |
116 | struct bio_post_read_ctx *ctx = | |
117 | container_of(work, struct bio_post_read_ctx, work); | |
118 | ||
119 | fscrypt_decrypt_bio(ctx->bio); | |
120 | ||
121 | bio_post_read_processing(ctx); | |
122 | } | |
123 | ||
95ae251f EB |
124 | static void verity_work(struct work_struct *work) |
125 | { | |
126 | struct bio_post_read_ctx *ctx = | |
127 | container_of(work, struct bio_post_read_ctx, work); | |
128 | ||
129 | fsverity_verify_bio(ctx->bio); | |
130 | ||
131 | bio_post_read_processing(ctx); | |
132 | } | |
133 | ||
6dbb1796 EB |
134 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx) |
135 | { | |
95ae251f EB |
136 | /* |
137 | * We use different work queues for decryption and for verity because | |
138 | * verity may require reading metadata pages that need decryption, and | |
139 | * we shouldn't recurse to the same workqueue. | |
140 | */ | |
6dbb1796 EB |
141 | switch (++ctx->cur_step) { |
142 | case STEP_DECRYPT: | |
143 | if (ctx->enabled_steps & (1 << STEP_DECRYPT)) { | |
144 | INIT_WORK(&ctx->work, decrypt_work); | |
145 | fscrypt_enqueue_decrypt_work(&ctx->work); | |
146 | return; | |
147 | } | |
148 | ctx->cur_step++; | |
149 | /* fall-through */ | |
95ae251f EB |
150 | case STEP_VERITY: |
151 | if (ctx->enabled_steps & (1 << STEP_VERITY)) { | |
152 | INIT_WORK(&ctx->work, verity_work); | |
153 | fsverity_enqueue_verify_work(&ctx->work); | |
154 | return; | |
155 | } | |
156 | ctx->cur_step++; | |
157 | /* fall-through */ | |
6dbb1796 EB |
158 | default: |
159 | __read_end_io(ctx->bio); | |
160 | } | |
161 | } | |
162 | ||
163 | static bool f2fs_bio_post_read_required(struct bio *bio) | |
164 | { | |
165 | return bio->bi_private && !bio->bi_status; | |
166 | } | |
167 | ||
168 | static void f2fs_read_end_io(struct bio *bio) | |
169 | { | |
6f5c2ed0 CY |
170 | if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)), |
171 | FAULT_READ_IO)) { | |
172 | f2fs_show_injection_info(FAULT_READ_IO); | |
4e4cbee9 | 173 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 174 | } |
8b038c70 | 175 | |
6dbb1796 EB |
176 | if (f2fs_bio_post_read_required(bio)) { |
177 | struct bio_post_read_ctx *ctx = bio->bi_private; | |
f1e88660 | 178 | |
6dbb1796 EB |
179 | ctx->cur_step = STEP_INITIAL; |
180 | bio_post_read_processing(ctx); | |
181 | return; | |
f1e88660 | 182 | } |
6dbb1796 EB |
183 | |
184 | __read_end_io(bio); | |
f1e88660 JK |
185 | } |
186 | ||
4246a0b6 | 187 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 188 | { |
1b1f559f | 189 | struct f2fs_sb_info *sbi = bio->bi_private; |
f568849e | 190 | struct bio_vec *bvec; |
6dc4f100 | 191 | struct bvec_iter_all iter_all; |
93dfe2ac | 192 | |
6f5c2ed0 CY |
193 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
194 | f2fs_show_injection_info(FAULT_WRITE_IO); | |
195 | bio->bi_status = BLK_STS_IOERR; | |
196 | } | |
197 | ||
2b070cfe | 198 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 199 | struct page *page = bvec->bv_page; |
36951b38 | 200 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 201 | |
0a595eba JK |
202 | if (IS_DUMMY_WRITTEN_PAGE(page)) { |
203 | set_page_private(page, (unsigned long)NULL); | |
204 | ClearPagePrivate(page); | |
205 | unlock_page(page); | |
206 | mempool_free(page, sbi->write_io_dummy); | |
207 | ||
4e4cbee9 | 208 | if (unlikely(bio->bi_status)) |
0a595eba JK |
209 | f2fs_stop_checkpoint(sbi, true); |
210 | continue; | |
211 | } | |
212 | ||
d2d0727b | 213 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 214 | |
4e4cbee9 | 215 | if (unlikely(bio->bi_status)) { |
5114a97a | 216 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
217 | if (type == F2FS_WB_CP_DATA) |
218 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 219 | } |
7dff55d2 YH |
220 | |
221 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
222 | page->index != nid_of_node(page)); | |
223 | ||
36951b38 | 224 | dec_page_count(sbi, type); |
50fa53ec CY |
225 | if (f2fs_in_warm_node_list(sbi, page)) |
226 | f2fs_del_fsync_node_entry(sbi, page); | |
36951b38 | 227 | clear_cold_data(page); |
93dfe2ac | 228 | end_page_writeback(page); |
f568849e | 229 | } |
36951b38 | 230 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 231 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
232 | wake_up(&sbi->cp_wait); |
233 | ||
234 | bio_put(bio); | |
235 | } | |
236 | ||
3c62be17 JK |
237 | /* |
238 | * Return true, if pre_bio's bdev is same as its target device. | |
239 | */ | |
240 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, | |
241 | block_t blk_addr, struct bio *bio) | |
242 | { | |
243 | struct block_device *bdev = sbi->sb->s_bdev; | |
244 | int i; | |
245 | ||
0916878d DLM |
246 | if (f2fs_is_multi_device(sbi)) { |
247 | for (i = 0; i < sbi->s_ndevs; i++) { | |
248 | if (FDEV(i).start_blk <= blk_addr && | |
249 | FDEV(i).end_blk >= blk_addr) { | |
250 | blk_addr -= FDEV(i).start_blk; | |
251 | bdev = FDEV(i).bdev; | |
252 | break; | |
253 | } | |
3c62be17 JK |
254 | } |
255 | } | |
256 | if (bio) { | |
74d46992 | 257 | bio_set_dev(bio, bdev); |
3c62be17 JK |
258 | bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |
259 | } | |
260 | return bdev; | |
261 | } | |
262 | ||
263 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
264 | { | |
265 | int i; | |
266 | ||
0916878d DLM |
267 | if (!f2fs_is_multi_device(sbi)) |
268 | return 0; | |
269 | ||
3c62be17 JK |
270 | for (i = 0; i < sbi->s_ndevs; i++) |
271 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
272 | return i; | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static bool __same_bdev(struct f2fs_sb_info *sbi, | |
277 | block_t blk_addr, struct bio *bio) | |
278 | { | |
74d46992 CH |
279 | struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); |
280 | return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; | |
3c62be17 JK |
281 | } |
282 | ||
940a6d34 GZ |
283 | /* |
284 | * Low-level block read/write IO operations. | |
285 | */ | |
b757f6ed | 286 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 287 | { |
b757f6ed | 288 | struct f2fs_sb_info *sbi = fio->sbi; |
940a6d34 GZ |
289 | struct bio *bio; |
290 | ||
d62fe971 | 291 | bio = f2fs_bio_alloc(sbi, npages, true); |
940a6d34 | 292 | |
b757f6ed CY |
293 | f2fs_target_device(sbi, fio->new_blkaddr, bio); |
294 | if (is_read_io(fio->op)) { | |
0cdd3195 HL |
295 | bio->bi_end_io = f2fs_read_end_io; |
296 | bio->bi_private = NULL; | |
297 | } else { | |
298 | bio->bi_end_io = f2fs_write_end_io; | |
299 | bio->bi_private = sbi; | |
b757f6ed CY |
300 | bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, |
301 | fio->type, fio->temp); | |
0cdd3195 | 302 | } |
b757f6ed CY |
303 | if (fio->io_wbc) |
304 | wbc_init_bio(fio->io_wbc, bio); | |
940a6d34 GZ |
305 | |
306 | return bio; | |
307 | } | |
308 | ||
4fc29c1a LT |
309 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
310 | struct bio *bio, enum page_type type) | |
f5730184 | 311 | { |
4fc29c1a | 312 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
313 | unsigned int start; |
314 | ||
0a595eba JK |
315 | if (type != DATA && type != NODE) |
316 | goto submit_io; | |
317 | ||
66415cee | 318 | if (test_opt(sbi, LFS) && current->plug) |
3bb09a0e TY |
319 | blk_finish_plug(current->plug); |
320 | ||
8223ecc4 CY |
321 | if (F2FS_IO_ALIGNED(sbi)) |
322 | goto submit_io; | |
323 | ||
0a595eba JK |
324 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
325 | start %= F2FS_IO_SIZE(sbi); | |
326 | ||
327 | if (start == 0) | |
328 | goto submit_io; | |
329 | ||
330 | /* fill dummy pages */ | |
331 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
332 | struct page *page = | |
333 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 334 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
335 | f2fs_bug_on(sbi, !page); |
336 | ||
bc73a4b2 | 337 | zero_user_segment(page, 0, PAGE_SIZE); |
0a595eba JK |
338 | SetPagePrivate(page); |
339 | set_page_private(page, (unsigned long)DUMMY_WRITTEN_PAGE); | |
340 | lock_page(page); | |
341 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) | |
342 | f2fs_bug_on(sbi, 1); | |
343 | } | |
344 | /* | |
345 | * In the NODE case, we lose next block address chain. So, we | |
346 | * need to do checkpoint in f2fs_sync_file. | |
347 | */ | |
348 | if (type == NODE) | |
349 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 350 | } |
0a595eba | 351 | submit_io: |
554b5125 JK |
352 | if (is_read_io(bio_op(bio))) |
353 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
354 | else | |
355 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
4e49ea4a | 356 | submit_bio(bio); |
f5730184 JK |
357 | } |
358 | ||
458e6197 | 359 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 360 | { |
458e6197 | 361 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
362 | |
363 | if (!io->bio) | |
364 | return; | |
365 | ||
554b5125 JK |
366 | bio_set_op_attrs(io->bio, fio->op, fio->op_flags); |
367 | ||
04d328de | 368 | if (is_read_io(fio->op)) |
554b5125 | 369 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 370 | else |
554b5125 | 371 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 372 | |
4fc29c1a | 373 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
374 | io->bio = NULL; |
375 | } | |
376 | ||
8648de2c | 377 | static bool __has_merged_page(struct bio *bio, struct inode *inode, |
bab475c5 | 378 | struct page *page, nid_t ino) |
0fd785eb | 379 | { |
0fd785eb CY |
380 | struct bio_vec *bvec; |
381 | struct page *target; | |
6dc4f100 | 382 | struct bvec_iter_all iter_all; |
0fd785eb | 383 | |
8648de2c | 384 | if (!bio) |
0fd785eb | 385 | return false; |
0c3a5797 | 386 | |
bab475c5 | 387 | if (!inode && !page && !ino) |
0c3a5797 | 388 | return true; |
0fd785eb | 389 | |
8648de2c | 390 | bio_for_each_segment_all(bvec, bio, iter_all) { |
0fd785eb | 391 | |
d2d0727b EB |
392 | target = bvec->bv_page; |
393 | if (fscrypt_is_bounce_page(target)) | |
394 | target = fscrypt_pagecache_page(target); | |
0fd785eb | 395 | |
0c3a5797 CY |
396 | if (inode && inode == target->mapping->host) |
397 | return true; | |
bab475c5 CY |
398 | if (page && page == target) |
399 | return true; | |
0c3a5797 | 400 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 401 | return true; |
0fd785eb CY |
402 | } |
403 | ||
0fd785eb CY |
404 | return false; |
405 | } | |
406 | ||
b9109b0e | 407 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 408 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
409 | { |
410 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 411 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 412 | |
df0f8dc0 | 413 | down_write(&io->io_rwsem); |
458e6197 JK |
414 | |
415 | /* change META to META_FLUSH in the checkpoint procedure */ | |
416 | if (type >= META_FLUSH) { | |
417 | io->fio.type = META_FLUSH; | |
04d328de | 418 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 419 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 420 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 421 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
422 | } |
423 | __submit_merged_bio(io); | |
df0f8dc0 | 424 | up_write(&io->io_rwsem); |
93dfe2ac JK |
425 | } |
426 | ||
a912b54d | 427 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
428 | struct inode *inode, struct page *page, |
429 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 430 | { |
a912b54d | 431 | enum temp_type temp; |
1e771e83 | 432 | bool ret = true; |
a912b54d JK |
433 | |
434 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
435 | if (!force) { |
436 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
437 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 438 | |
1e771e83 | 439 | down_read(&io->io_rwsem); |
8648de2c | 440 | ret = __has_merged_page(io->bio, inode, page, ino); |
1e771e83 YS |
441 | up_read(&io->io_rwsem); |
442 | } | |
443 | if (ret) | |
444 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
445 | |
446 | /* TODO: use HOT temp only for meta pages now. */ | |
447 | if (type >= META) | |
448 | break; | |
449 | } | |
0c3a5797 CY |
450 | } |
451 | ||
b9109b0e | 452 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 453 | { |
adcc00f7 | 454 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
455 | } |
456 | ||
b9109b0e | 457 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
458 | struct inode *inode, struct page *page, |
459 | nid_t ino, enum page_type type) | |
0c3a5797 | 460 | { |
bab475c5 | 461 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
462 | } |
463 | ||
b9109b0e | 464 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 465 | { |
b9109b0e JK |
466 | f2fs_submit_merged_write(sbi, DATA); |
467 | f2fs_submit_merged_write(sbi, NODE); | |
468 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
469 | } |
470 | ||
93dfe2ac JK |
471 | /* |
472 | * Fill the locked page with data located in the block address. | |
771a9a71 | 473 | * A caller needs to unlock the page on failure. |
93dfe2ac | 474 | */ |
05ca3632 | 475 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 476 | { |
93dfe2ac | 477 | struct bio *bio; |
0b81d077 JK |
478 | struct page *page = fio->encrypted_page ? |
479 | fio->encrypted_page : fio->page; | |
93dfe2ac | 480 | |
c9b60788 | 481 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
93770ab7 CY |
482 | fio->is_por ? META_POR : (__is_meta_io(fio) ? |
483 | META_GENERIC : DATA_GENERIC_ENHANCE))) | |
10f966bb | 484 | return -EFSCORRUPTED; |
c9b60788 | 485 | |
2ace38e0 | 486 | trace_f2fs_submit_page_bio(page, fio); |
05ca3632 | 487 | f2fs_trace_ios(fio, 0); |
93dfe2ac JK |
488 | |
489 | /* Allocate a new bio */ | |
b757f6ed | 490 | bio = __bio_alloc(fio, 1); |
93dfe2ac | 491 | |
09cbfeaf | 492 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 493 | bio_put(bio); |
93dfe2ac JK |
494 | return -EFAULT; |
495 | } | |
78efac53 CY |
496 | |
497 | if (fio->io_wbc && !is_read_io(fio->op)) | |
34e51a5e | 498 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
78efac53 | 499 | |
04d328de | 500 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 501 | |
5f9abab4 JK |
502 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
503 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
504 | |
505 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
506 | return 0; |
507 | } | |
508 | ||
8896cbdf CY |
509 | static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, |
510 | block_t last_blkaddr, block_t cur_blkaddr) | |
511 | { | |
512 | if (last_blkaddr + 1 != cur_blkaddr) | |
513 | return false; | |
514 | return __same_bdev(sbi, cur_blkaddr, bio); | |
515 | } | |
516 | ||
517 | static bool io_type_is_mergeable(struct f2fs_bio_info *io, | |
518 | struct f2fs_io_info *fio) | |
519 | { | |
520 | if (io->fio.op != fio->op) | |
521 | return false; | |
522 | return io->fio.op_flags == fio->op_flags; | |
523 | } | |
524 | ||
525 | static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, | |
526 | struct f2fs_bio_info *io, | |
527 | struct f2fs_io_info *fio, | |
528 | block_t last_blkaddr, | |
529 | block_t cur_blkaddr) | |
530 | { | |
c72db71e CY |
531 | if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { |
532 | unsigned int filled_blocks = | |
533 | F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); | |
534 | unsigned int io_size = F2FS_IO_SIZE(sbi); | |
535 | unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; | |
536 | ||
537 | /* IOs in bio is aligned and left space of vectors is not enough */ | |
538 | if (!(filled_blocks % io_size) && left_vecs < io_size) | |
539 | return false; | |
540 | } | |
8896cbdf CY |
541 | if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) |
542 | return false; | |
543 | return io_type_is_mergeable(io, fio); | |
544 | } | |
545 | ||
8648de2c CY |
546 | int f2fs_merge_page_bio(struct f2fs_io_info *fio) |
547 | { | |
548 | struct bio *bio = *fio->bio; | |
549 | struct page *page = fio->encrypted_page ? | |
550 | fio->encrypted_page : fio->page; | |
551 | ||
552 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, | |
553 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
10f966bb | 554 | return -EFSCORRUPTED; |
8648de2c CY |
555 | |
556 | trace_f2fs_submit_page_bio(page, fio); | |
557 | f2fs_trace_ios(fio, 0); | |
558 | ||
8896cbdf CY |
559 | if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, |
560 | fio->new_blkaddr)) { | |
8648de2c CY |
561 | __submit_bio(fio->sbi, bio, fio->type); |
562 | bio = NULL; | |
563 | } | |
564 | alloc_new: | |
565 | if (!bio) { | |
b757f6ed | 566 | bio = __bio_alloc(fio, BIO_MAX_PAGES); |
8648de2c CY |
567 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
568 | } | |
569 | ||
570 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { | |
571 | __submit_bio(fio->sbi, bio, fio->type); | |
572 | bio = NULL; | |
573 | goto alloc_new; | |
574 | } | |
575 | ||
576 | if (fio->io_wbc) | |
9637d517 | 577 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
8648de2c CY |
578 | |
579 | inc_page_count(fio->sbi, WB_DATA_TYPE(page)); | |
580 | ||
581 | *fio->last_block = fio->new_blkaddr; | |
582 | *fio->bio = bio; | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static void f2fs_submit_ipu_bio(struct f2fs_sb_info *sbi, struct bio **bio, | |
588 | struct page *page) | |
589 | { | |
590 | if (!bio) | |
591 | return; | |
592 | ||
593 | if (!__has_merged_page(*bio, NULL, page, 0)) | |
594 | return; | |
595 | ||
596 | __submit_bio(sbi, *bio, DATA); | |
597 | *bio = NULL; | |
598 | } | |
599 | ||
fe16efe6 | 600 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 601 | { |
05ca3632 | 602 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 603 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 604 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 605 | struct page *bio_page; |
93dfe2ac | 606 | |
b9109b0e | 607 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 608 | |
fb830fc5 CY |
609 | down_write(&io->io_rwsem); |
610 | next: | |
611 | if (fio->in_list) { | |
612 | spin_lock(&io->io_lock); | |
613 | if (list_empty(&io->io_list)) { | |
614 | spin_unlock(&io->io_lock); | |
fe16efe6 | 615 | goto out; |
fb830fc5 CY |
616 | } |
617 | fio = list_first_entry(&io->io_list, | |
618 | struct f2fs_io_info, list); | |
619 | list_del(&fio->list); | |
620 | spin_unlock(&io->io_lock); | |
621 | } | |
93dfe2ac | 622 | |
93770ab7 | 623 | verify_fio_blkaddr(fio); |
93dfe2ac | 624 | |
36951b38 CY |
625 | bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page; |
626 | ||
ebf7c522 TM |
627 | /* set submitted = true as a return value */ |
628 | fio->submitted = true; | |
d68f735b | 629 | |
b9109b0e | 630 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 631 | |
8896cbdf CY |
632 | if (io->bio && !io_is_mergeable(sbi, io->bio, io, fio, |
633 | io->last_block_in_bio, fio->new_blkaddr)) | |
458e6197 | 634 | __submit_merged_bio(io); |
93dfe2ac JK |
635 | alloc_new: |
636 | if (io->bio == NULL) { | |
8223ecc4 CY |
637 | if (F2FS_IO_ALIGNED(sbi) && |
638 | (fio->type == DATA || fio->type == NODE) && | |
0a595eba | 639 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { |
b9109b0e | 640 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
641 | fio->retry = true; |
642 | goto skip; | |
0a595eba | 643 | } |
b757f6ed | 644 | io->bio = __bio_alloc(fio, BIO_MAX_PAGES); |
458e6197 | 645 | io->fio = *fio; |
93dfe2ac JK |
646 | } |
647 | ||
a912b54d | 648 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 649 | __submit_merged_bio(io); |
93dfe2ac JK |
650 | goto alloc_new; |
651 | } | |
652 | ||
578c6478 | 653 | if (fio->io_wbc) |
34e51a5e | 654 | wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); |
578c6478 | 655 | |
7a9d7548 | 656 | io->last_block_in_bio = fio->new_blkaddr; |
05ca3632 | 657 | f2fs_trace_ios(fio, 0); |
fb830fc5 CY |
658 | |
659 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 660 | skip: |
fb830fc5 CY |
661 | if (fio->in_list) |
662 | goto next; | |
fe16efe6 | 663 | out: |
4354994f | 664 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
00e09c0b | 665 | !f2fs_is_checkpoint_ready(sbi)) |
5ce80586 | 666 | __submit_merged_bio(io); |
df0f8dc0 | 667 | up_write(&io->io_rwsem); |
93dfe2ac JK |
668 | } |
669 | ||
95ae251f EB |
670 | static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx) |
671 | { | |
672 | return fsverity_active(inode) && | |
673 | idx < DIV_ROUND_UP(inode->i_size, PAGE_SIZE); | |
674 | } | |
675 | ||
13ba41e3 | 676 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
95ae251f EB |
677 | unsigned nr_pages, unsigned op_flag, |
678 | pgoff_t first_idx) | |
13ba41e3 JK |
679 | { |
680 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 681 | struct bio *bio; |
6dbb1796 EB |
682 | struct bio_post_read_ctx *ctx; |
683 | unsigned int post_read_steps = 0; | |
13ba41e3 | 684 | |
d62fe971 | 685 | bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false); |
6dbb1796 | 686 | if (!bio) |
13ba41e3 | 687 | return ERR_PTR(-ENOMEM); |
13ba41e3 JK |
688 | f2fs_target_device(sbi, blkaddr, bio); |
689 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 690 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 691 | |
6dbb1796 EB |
692 | if (f2fs_encrypted_file(inode)) |
693 | post_read_steps |= 1 << STEP_DECRYPT; | |
95ae251f EB |
694 | |
695 | if (f2fs_need_verity(inode, first_idx)) | |
696 | post_read_steps |= 1 << STEP_VERITY; | |
697 | ||
6dbb1796 EB |
698 | if (post_read_steps) { |
699 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); | |
700 | if (!ctx) { | |
701 | bio_put(bio); | |
702 | return ERR_PTR(-ENOMEM); | |
703 | } | |
704 | ctx->bio = bio; | |
705 | ctx->enabled_steps = post_read_steps; | |
706 | bio->bi_private = ctx; | |
6dbb1796 EB |
707 | } |
708 | ||
13ba41e3 JK |
709 | return bio; |
710 | } | |
711 | ||
712 | /* This can handle encryption stuffs */ | |
713 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
714 | block_t blkaddr) | |
715 | { | |
93770ab7 CY |
716 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
717 | struct bio *bio; | |
13ba41e3 | 718 | |
95ae251f | 719 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, 0, page->index); |
13ba41e3 JK |
720 | if (IS_ERR(bio)) |
721 | return PTR_ERR(bio); | |
722 | ||
0ded69f6 JK |
723 | /* wait for GCed page writeback via META_MAPPING */ |
724 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
725 | ||
13ba41e3 JK |
726 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
727 | bio_put(bio); | |
728 | return -EFAULT; | |
729 | } | |
fb7d70db | 730 | ClearPageError(page); |
93770ab7 CY |
731 | inc_page_count(sbi, F2FS_RD_DATA); |
732 | __submit_bio(sbi, bio, DATA); | |
13ba41e3 JK |
733 | return 0; |
734 | } | |
735 | ||
46008c6d CY |
736 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
737 | { | |
738 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
739 | __le32 *addr_array; | |
7a2af766 CY |
740 | int base = 0; |
741 | ||
742 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
743 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
744 | |
745 | /* Get physical address of data block */ | |
746 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 747 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
748 | } |
749 | ||
0a8165d7 | 750 | /* |
eb47b800 JK |
751 | * Lock ordering for the change of data block address: |
752 | * ->data_page | |
753 | * ->node_page | |
754 | * update block addresses in the node page | |
755 | */ | |
4d57b86d | 756 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 757 | { |
bae0ee7a | 758 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
759 | __set_data_blkaddr(dn); |
760 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 761 | dn->node_changed = true; |
eb47b800 JK |
762 | } |
763 | ||
f28b3434 CY |
764 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
765 | { | |
766 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 767 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
768 | f2fs_update_extent_cache(dn); |
769 | } | |
770 | ||
46008c6d | 771 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 772 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 773 | { |
4081363f | 774 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 775 | int err; |
eb47b800 | 776 | |
46008c6d CY |
777 | if (!count) |
778 | return 0; | |
779 | ||
91942321 | 780 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 781 | return -EPERM; |
0abd675e CY |
782 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
783 | return err; | |
eb47b800 | 784 | |
46008c6d CY |
785 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
786 | dn->ofs_in_node, count); | |
787 | ||
bae0ee7a | 788 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
789 | |
790 | for (; count > 0; dn->ofs_in_node++) { | |
7a2af766 CY |
791 | block_t blkaddr = datablock_addr(dn->inode, |
792 | dn->node_page, dn->ofs_in_node); | |
46008c6d CY |
793 | if (blkaddr == NULL_ADDR) { |
794 | dn->data_blkaddr = NEW_ADDR; | |
795 | __set_data_blkaddr(dn); | |
796 | count--; | |
797 | } | |
798 | } | |
799 | ||
800 | if (set_page_dirty(dn->node_page)) | |
801 | dn->node_changed = true; | |
eb47b800 JK |
802 | return 0; |
803 | } | |
804 | ||
46008c6d | 805 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 806 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
807 | { |
808 | unsigned int ofs_in_node = dn->ofs_in_node; | |
809 | int ret; | |
810 | ||
4d57b86d | 811 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
812 | dn->ofs_in_node = ofs_in_node; |
813 | return ret; | |
814 | } | |
815 | ||
b600965c HL |
816 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
817 | { | |
818 | bool need_put = dn->inode_page ? false : true; | |
819 | int err; | |
820 | ||
4d57b86d | 821 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
822 | if (err) |
823 | return err; | |
a8865372 | 824 | |
b600965c | 825 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 826 | err = f2fs_reserve_new_block(dn); |
a8865372 | 827 | if (err || need_put) |
b600965c HL |
828 | f2fs_put_dnode(dn); |
829 | return err; | |
830 | } | |
831 | ||
759af1c9 | 832 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 833 | { |
e15882b6 | 834 | struct extent_info ei = {0,0,0}; |
759af1c9 | 835 | struct inode *inode = dn->inode; |
028a41e8 | 836 | |
759af1c9 FL |
837 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
838 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
839 | return 0; | |
429511cd | 840 | } |
028a41e8 | 841 | |
759af1c9 | 842 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
843 | } |
844 | ||
4d57b86d | 845 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 846 | int op_flags, bool for_write) |
eb47b800 | 847 | { |
eb47b800 JK |
848 | struct address_space *mapping = inode->i_mapping; |
849 | struct dnode_of_data dn; | |
850 | struct page *page; | |
e15882b6 | 851 | struct extent_info ei = {0,0,0}; |
eb47b800 | 852 | int err; |
4375a336 | 853 | |
a56c7c6f | 854 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
855 | if (!page) |
856 | return ERR_PTR(-ENOMEM); | |
857 | ||
cb3bc9ee CY |
858 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
859 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
93770ab7 CY |
860 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
861 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 862 | err = -EFSCORRUPTED; |
93770ab7 CY |
863 | goto put_err; |
864 | } | |
cb3bc9ee CY |
865 | goto got_it; |
866 | } | |
867 | ||
eb47b800 | 868 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 869 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
870 | if (err) |
871 | goto put_err; | |
eb47b800 JK |
872 | f2fs_put_dnode(&dn); |
873 | ||
6bacf52f | 874 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
875 | err = -ENOENT; |
876 | goto put_err; | |
650495de | 877 | } |
93770ab7 CY |
878 | if (dn.data_blkaddr != NEW_ADDR && |
879 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
880 | dn.data_blkaddr, | |
881 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 882 | err = -EFSCORRUPTED; |
93770ab7 CY |
883 | goto put_err; |
884 | } | |
cb3bc9ee | 885 | got_it: |
43f3eae1 JK |
886 | if (PageUptodate(page)) { |
887 | unlock_page(page); | |
eb47b800 | 888 | return page; |
43f3eae1 | 889 | } |
eb47b800 | 890 | |
d59ff4df JK |
891 | /* |
892 | * A new dentry page is allocated but not able to be written, since its | |
893 | * new inode page couldn't be allocated due to -ENOSPC. | |
894 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
895 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
896 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
897 | */ |
898 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 899 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
900 | if (!PageUptodate(page)) |
901 | SetPageUptodate(page); | |
43f3eae1 | 902 | unlock_page(page); |
d59ff4df JK |
903 | return page; |
904 | } | |
eb47b800 | 905 | |
13ba41e3 | 906 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr); |
393ff91f | 907 | if (err) |
86531d6b | 908 | goto put_err; |
43f3eae1 | 909 | return page; |
86531d6b JK |
910 | |
911 | put_err: | |
912 | f2fs_put_page(page, 1); | |
913 | return ERR_PTR(err); | |
43f3eae1 JK |
914 | } |
915 | ||
4d57b86d | 916 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
917 | { |
918 | struct address_space *mapping = inode->i_mapping; | |
919 | struct page *page; | |
920 | ||
921 | page = find_get_page(mapping, index); | |
922 | if (page && PageUptodate(page)) | |
923 | return page; | |
924 | f2fs_put_page(page, 0); | |
925 | ||
4d57b86d | 926 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
927 | if (IS_ERR(page)) |
928 | return page; | |
929 | ||
930 | if (PageUptodate(page)) | |
931 | return page; | |
932 | ||
933 | wait_on_page_locked(page); | |
934 | if (unlikely(!PageUptodate(page))) { | |
935 | f2fs_put_page(page, 0); | |
936 | return ERR_PTR(-EIO); | |
937 | } | |
938 | return page; | |
939 | } | |
940 | ||
941 | /* | |
942 | * If it tries to access a hole, return an error. | |
943 | * Because, the callers, functions in dir.c and GC, should be able to know | |
944 | * whether this page exists or not. | |
945 | */ | |
4d57b86d | 946 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 947 | bool for_write) |
43f3eae1 JK |
948 | { |
949 | struct address_space *mapping = inode->i_mapping; | |
950 | struct page *page; | |
951 | repeat: | |
4d57b86d | 952 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
953 | if (IS_ERR(page)) |
954 | return page; | |
393ff91f | 955 | |
43f3eae1 | 956 | /* wait for read completion */ |
393ff91f | 957 | lock_page(page); |
6bacf52f | 958 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
959 | f2fs_put_page(page, 1); |
960 | goto repeat; | |
eb47b800 | 961 | } |
1563ac75 CY |
962 | if (unlikely(!PageUptodate(page))) { |
963 | f2fs_put_page(page, 1); | |
964 | return ERR_PTR(-EIO); | |
965 | } | |
eb47b800 JK |
966 | return page; |
967 | } | |
968 | ||
0a8165d7 | 969 | /* |
eb47b800 JK |
970 | * Caller ensures that this data page is never allocated. |
971 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 972 | * |
4f4124d0 CY |
973 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
974 | * f2fs_unlock_op(). | |
470f00e9 CY |
975 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
976 | * ipage should be released by this function. | |
eb47b800 | 977 | */ |
4d57b86d | 978 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 979 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 980 | { |
eb47b800 JK |
981 | struct address_space *mapping = inode->i_mapping; |
982 | struct page *page; | |
983 | struct dnode_of_data dn; | |
984 | int err; | |
7612118a | 985 | |
a56c7c6f | 986 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
987 | if (!page) { |
988 | /* | |
989 | * before exiting, we should make sure ipage will be released | |
990 | * if any error occur. | |
991 | */ | |
992 | f2fs_put_page(ipage, 1); | |
01f28610 | 993 | return ERR_PTR(-ENOMEM); |
470f00e9 | 994 | } |
eb47b800 | 995 | |
a8865372 | 996 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 997 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
998 | if (err) { |
999 | f2fs_put_page(page, 1); | |
eb47b800 | 1000 | return ERR_PTR(err); |
a8865372 | 1001 | } |
01f28610 JK |
1002 | if (!ipage) |
1003 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1004 | |
1005 | if (PageUptodate(page)) | |
01f28610 | 1006 | goto got_it; |
eb47b800 JK |
1007 | |
1008 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1009 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1010 | if (!PageUptodate(page)) |
1011 | SetPageUptodate(page); | |
eb47b800 | 1012 | } else { |
4375a336 | 1013 | f2fs_put_page(page, 1); |
a8865372 | 1014 | |
7612118a JK |
1015 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1016 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1017 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1018 | if (IS_ERR(page)) |
7612118a | 1019 | return page; |
eb47b800 | 1020 | } |
01f28610 | 1021 | got_it: |
9edcdabf | 1022 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1023 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1024 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1025 | return page; |
1026 | } | |
1027 | ||
d5097be5 | 1028 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1029 | { |
4081363f | 1030 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1031 | struct f2fs_summary sum; |
bfad7c2d | 1032 | struct node_info ni; |
6aa58d8a | 1033 | block_t old_blkaddr; |
46008c6d | 1034 | blkcnt_t count = 1; |
0abd675e | 1035 | int err; |
bfad7c2d | 1036 | |
91942321 | 1037 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1038 | return -EPERM; |
df6136ef | 1039 | |
7735730d CY |
1040 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
1041 | if (err) | |
1042 | return err; | |
1043 | ||
7a2af766 CY |
1044 | dn->data_blkaddr = datablock_addr(dn->inode, |
1045 | dn->node_page, dn->ofs_in_node); | |
f847c699 | 1046 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1047 | goto alloc; |
1048 | ||
0abd675e CY |
1049 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1050 | return err; | |
bfad7c2d | 1051 | |
df6136ef | 1052 | alloc: |
bfad7c2d | 1053 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1054 | old_blkaddr = dn->data_blkaddr; |
1055 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
d5097be5 | 1056 | &sum, seg_type, NULL, false); |
6aa58d8a CY |
1057 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
1058 | invalidate_mapping_pages(META_MAPPING(sbi), | |
1059 | old_blkaddr, old_blkaddr); | |
86f35dc3 | 1060 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d | 1061 | |
0a4daae5 JK |
1062 | /* |
1063 | * i_size will be updated by direct_IO. Otherwise, we'll get stale | |
1064 | * data from unwritten block via dio_read. | |
1065 | */ | |
bfad7c2d JK |
1066 | return 0; |
1067 | } | |
1068 | ||
a7de6086 | 1069 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) |
59b802e5 | 1070 | { |
b439b103 | 1071 | struct inode *inode = file_inode(iocb->ki_filp); |
5b8db7fa | 1072 | struct f2fs_map_blocks map; |
d6d478a1 | 1073 | int flag; |
a7de6086 | 1074 | int err = 0; |
d6d478a1 | 1075 | bool direct_io = iocb->ki_flags & IOCB_DIRECT; |
59b802e5 | 1076 | |
71ad682c | 1077 | /* convert inline data for Direct I/O*/ |
d6d478a1 | 1078 | if (direct_io) { |
71ad682c WG |
1079 | err = f2fs_convert_inline_inode(inode); |
1080 | if (err) | |
1081 | return err; | |
1082 | } | |
1083 | ||
f9d6d059 CY |
1084 | if (direct_io && allow_outplace_dio(inode, iocb, from)) |
1085 | return 0; | |
1086 | ||
dc91de78 JK |
1087 | if (is_inode_flag_set(inode, FI_NO_PREALLOC)) |
1088 | return 0; | |
1089 | ||
0080c507 | 1090 | map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); |
dfd02e4d CY |
1091 | map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); |
1092 | if (map.m_len > map.m_lblk) | |
1093 | map.m_len -= map.m_lblk; | |
1094 | else | |
1095 | map.m_len = 0; | |
1096 | ||
da85985c | 1097 | map.m_next_pgofs = NULL; |
c4020b2d | 1098 | map.m_next_extent = NULL; |
d5097be5 | 1099 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 1100 | map.m_may_create = true; |
2a340760 | 1101 | |
d6d478a1 | 1102 | if (direct_io) { |
4d57b86d | 1103 | map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); |
f847c699 | 1104 | flag = f2fs_force_buffered_io(inode, iocb, from) ? |
d6d478a1 CY |
1105 | F2FS_GET_BLOCK_PRE_AIO : |
1106 | F2FS_GET_BLOCK_PRE_DIO; | |
1107 | goto map_blocks; | |
d5097be5 | 1108 | } |
f2470371 | 1109 | if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { |
a7de6086 JK |
1110 | err = f2fs_convert_inline_inode(inode); |
1111 | if (err) | |
1112 | return err; | |
b439b103 | 1113 | } |
d6d478a1 | 1114 | if (f2fs_has_inline_data(inode)) |
25006645 | 1115 | return err; |
d6d478a1 CY |
1116 | |
1117 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
1118 | ||
1119 | map_blocks: | |
1120 | err = f2fs_map_blocks(inode, &map, 1, flag); | |
1121 | if (map.m_len > 0 && err == -ENOSPC) { | |
1122 | if (!direct_io) | |
1123 | set_inode_flag(inode, FI_NO_PREALLOC); | |
1124 | err = 0; | |
25006645 | 1125 | } |
a7de6086 | 1126 | return err; |
59b802e5 JK |
1127 | } |
1128 | ||
39a86958 | 1129 | void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1130 | { |
1131 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1132 | if (lock) | |
1133 | down_read(&sbi->node_change); | |
1134 | else | |
1135 | up_read(&sbi->node_change); | |
1136 | } else { | |
1137 | if (lock) | |
1138 | f2fs_lock_op(sbi); | |
1139 | else | |
1140 | f2fs_unlock_op(sbi); | |
1141 | } | |
1142 | } | |
1143 | ||
0a8165d7 | 1144 | /* |
003a3e1d JK |
1145 | * f2fs_map_blocks() now supported readahead/bmap/rw direct_IO with |
1146 | * f2fs_map_blocks structure. | |
4f4124d0 CY |
1147 | * If original data blocks are allocated, then give them to blockdev. |
1148 | * Otherwise, | |
1149 | * a. preallocate requested block addresses | |
1150 | * b. do not use extent cache for better performance | |
1151 | * c. give the block addresses to blockdev | |
eb47b800 | 1152 | */ |
d323d005 | 1153 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1154 | int create, int flag) |
eb47b800 | 1155 | { |
003a3e1d | 1156 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1157 | struct dnode_of_data dn; |
f9811703 | 1158 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1159 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1160 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1161 | int err = 0, ofs = 1; |
46008c6d CY |
1162 | unsigned int ofs_in_node, last_ofs_in_node; |
1163 | blkcnt_t prealloc; | |
e15882b6 | 1164 | struct extent_info ei = {0,0,0}; |
7df3a431 | 1165 | block_t blkaddr; |
c4020b2d | 1166 | unsigned int start_pgofs; |
eb47b800 | 1167 | |
dfd02e4d CY |
1168 | if (!maxblocks) |
1169 | return 0; | |
1170 | ||
003a3e1d JK |
1171 | map->m_len = 0; |
1172 | map->m_flags = 0; | |
1173 | ||
1174 | /* it only supports block size == page size */ | |
1175 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1176 | end = pgofs + maxblocks; |
eb47b800 | 1177 | |
24b84912 | 1178 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
f4f0b677 JZ |
1179 | if (test_opt(sbi, LFS) && flag == F2FS_GET_BLOCK_DIO && |
1180 | map->m_may_create) | |
1181 | goto next_dnode; | |
1182 | ||
003a3e1d JK |
1183 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1184 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1185 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1186 | if (map->m_next_extent) |
1187 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1188 | |
1189 | /* for hardware encryption, but to avoid potential issue in future */ | |
1190 | if (flag == F2FS_GET_BLOCK_DIO) | |
1191 | f2fs_wait_on_block_writeback_range(inode, | |
1192 | map->m_pblk, map->m_len); | |
bfad7c2d | 1193 | goto out; |
a2e7d1bf | 1194 | } |
bfad7c2d | 1195 | |
4fe71e88 | 1196 | next_dnode: |
f9d6d059 | 1197 | if (map->m_may_create) |
59c9081b | 1198 | __do_map_lock(sbi, flag, true); |
eb47b800 JK |
1199 | |
1200 | /* When reading holes, we need its node page */ | |
1201 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1202 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1203 | if (err) { |
43473f96 CY |
1204 | if (flag == F2FS_GET_BLOCK_BMAP) |
1205 | map->m_pblk = 0; | |
da85985c | 1206 | if (err == -ENOENT) { |
bfad7c2d | 1207 | err = 0; |
da85985c CY |
1208 | if (map->m_next_pgofs) |
1209 | *map->m_next_pgofs = | |
4d57b86d | 1210 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1211 | if (map->m_next_extent) |
1212 | *map->m_next_extent = | |
4d57b86d | 1213 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1214 | } |
bfad7c2d | 1215 | goto unlock_out; |
848753aa | 1216 | } |
973163fc | 1217 | |
c4020b2d | 1218 | start_pgofs = pgofs; |
46008c6d | 1219 | prealloc = 0; |
230436b3 | 1220 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1221 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1222 | |
1223 | next_block: | |
7a2af766 | 1224 | blkaddr = datablock_addr(dn.inode, dn.node_page, dn.ofs_in_node); |
4fe71e88 | 1225 | |
c9b60788 | 1226 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1227 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1228 | err = -EFSCORRUPTED; |
c9b60788 CY |
1229 | goto sync_out; |
1230 | } | |
1231 | ||
93770ab7 | 1232 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1233 | /* use out-place-update for driect IO under LFS mode */ |
f9d6d059 CY |
1234 | if (test_opt(sbi, LFS) && flag == F2FS_GET_BLOCK_DIO && |
1235 | map->m_may_create) { | |
f847c699 | 1236 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1237 | if (err) |
1238 | goto sync_out; | |
1239 | blkaddr = dn.data_blkaddr; | |
1240 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1241 | } |
1242 | } else { | |
973163fc | 1243 | if (create) { |
f9811703 CY |
1244 | if (unlikely(f2fs_cp_error(sbi))) { |
1245 | err = -EIO; | |
4fe71e88 | 1246 | goto sync_out; |
f9811703 | 1247 | } |
24b84912 | 1248 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1249 | if (blkaddr == NULL_ADDR) { |
1250 | prealloc++; | |
1251 | last_ofs_in_node = dn.ofs_in_node; | |
1252 | } | |
24b84912 | 1253 | } else { |
0a4daae5 JK |
1254 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1255 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1256 | err = __allocate_data_block(&dn, |
1257 | map->m_seg_type); | |
6f2d8ed6 | 1258 | if (!err) |
91942321 | 1259 | set_inode_flag(inode, FI_APPEND_WRITE); |
24b84912 | 1260 | } |
973163fc | 1261 | if (err) |
4fe71e88 | 1262 | goto sync_out; |
3f2be043 | 1263 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1264 | blkaddr = dn.data_blkaddr; |
973163fc | 1265 | } else { |
43473f96 CY |
1266 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1267 | map->m_pblk = 0; | |
1268 | goto sync_out; | |
1269 | } | |
c4020b2d CY |
1270 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1271 | goto sync_out; | |
da85985c CY |
1272 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1273 | blkaddr == NULL_ADDR) { | |
1274 | if (map->m_next_pgofs) | |
1275 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1276 | goto sync_out; |
da85985c | 1277 | } |
f3d98e74 CY |
1278 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1279 | /* for defragment case */ | |
1280 | if (map->m_next_pgofs) | |
1281 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1282 | goto sync_out; |
f3d98e74 | 1283 | } |
e2b4e2bc | 1284 | } |
e2b4e2bc | 1285 | } |
eb47b800 | 1286 | |
46008c6d CY |
1287 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1288 | goto skip; | |
1289 | ||
4fe71e88 CY |
1290 | if (map->m_len == 0) { |
1291 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1292 | if (blkaddr == NEW_ADDR) | |
1293 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1294 | map->m_flags |= F2FS_MAP_MAPPED; | |
1295 | ||
1296 | map->m_pblk = blkaddr; | |
1297 | map->m_len = 1; | |
1298 | } else if ((map->m_pblk != NEW_ADDR && | |
1299 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1300 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1301 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
4fe71e88 CY |
1302 | ofs++; |
1303 | map->m_len++; | |
1304 | } else { | |
1305 | goto sync_out; | |
1306 | } | |
bfad7c2d | 1307 | |
46008c6d | 1308 | skip: |
bfad7c2d JK |
1309 | dn.ofs_in_node++; |
1310 | pgofs++; | |
1311 | ||
46008c6d CY |
1312 | /* preallocate blocks in batch for one dnode page */ |
1313 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1314 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1315 | |
46008c6d | 1316 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1317 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1318 | if (err) |
1319 | goto sync_out; | |
bfad7c2d | 1320 | |
46008c6d CY |
1321 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1322 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1323 | err = -ENOSPC; | |
1324 | goto sync_out; | |
3104af35 | 1325 | } |
46008c6d CY |
1326 | dn.ofs_in_node = end_offset; |
1327 | } | |
1328 | ||
1329 | if (pgofs >= end) | |
1330 | goto sync_out; | |
1331 | else if (dn.ofs_in_node < end_offset) | |
1332 | goto next_block; | |
1333 | ||
c4020b2d CY |
1334 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1335 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1336 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1337 | ||
1338 | f2fs_update_extent_cache_range(&dn, | |
1339 | start_pgofs, map->m_pblk + ofs, | |
1340 | map->m_len - ofs); | |
1341 | } | |
1342 | } | |
1343 | ||
46008c6d CY |
1344 | f2fs_put_dnode(&dn); |
1345 | ||
f9d6d059 | 1346 | if (map->m_may_create) { |
59c9081b | 1347 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1348 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1349 | } |
46008c6d | 1350 | goto next_dnode; |
7df3a431 | 1351 | |
bfad7c2d | 1352 | sync_out: |
1e78e8bd ST |
1353 | |
1354 | /* for hardware encryption, but to avoid potential issue in future */ | |
1355 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) | |
1356 | f2fs_wait_on_block_writeback_range(inode, | |
1357 | map->m_pblk, map->m_len); | |
1358 | ||
c4020b2d CY |
1359 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1360 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1361 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1362 | ||
1363 | f2fs_update_extent_cache_range(&dn, | |
1364 | start_pgofs, map->m_pblk + ofs, | |
1365 | map->m_len - ofs); | |
1366 | } | |
1367 | if (map->m_next_extent) | |
1368 | *map->m_next_extent = pgofs + 1; | |
1369 | } | |
eb47b800 | 1370 | f2fs_put_dnode(&dn); |
bfad7c2d | 1371 | unlock_out: |
f9d6d059 | 1372 | if (map->m_may_create) { |
59c9081b | 1373 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1374 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1375 | } |
bfad7c2d | 1376 | out: |
003a3e1d | 1377 | trace_f2fs_map_blocks(inode, map, err); |
bfad7c2d | 1378 | return err; |
eb47b800 JK |
1379 | } |
1380 | ||
b91050a8 HL |
1381 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1382 | { | |
1383 | struct f2fs_map_blocks map; | |
1384 | block_t last_lblk; | |
1385 | int err; | |
1386 | ||
1387 | if (pos + len > i_size_read(inode)) | |
1388 | return false; | |
1389 | ||
1390 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1391 | map.m_next_pgofs = NULL; | |
1392 | map.m_next_extent = NULL; | |
1393 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1394 | map.m_may_create = false; |
b91050a8 HL |
1395 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1396 | ||
1397 | while (map.m_lblk < last_lblk) { | |
1398 | map.m_len = last_lblk - map.m_lblk; | |
1399 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1400 | if (err || map.m_len == 0) | |
1401 | return false; | |
1402 | map.m_lblk += map.m_len; | |
1403 | } | |
1404 | return true; | |
1405 | } | |
1406 | ||
003a3e1d | 1407 | static int __get_data_block(struct inode *inode, sector_t iblock, |
da85985c | 1408 | struct buffer_head *bh, int create, int flag, |
f9d6d059 | 1409 | pgoff_t *next_pgofs, int seg_type, bool may_write) |
003a3e1d JK |
1410 | { |
1411 | struct f2fs_map_blocks map; | |
a7de6086 | 1412 | int err; |
003a3e1d JK |
1413 | |
1414 | map.m_lblk = iblock; | |
1415 | map.m_len = bh->b_size >> inode->i_blkbits; | |
da85985c | 1416 | map.m_next_pgofs = next_pgofs; |
c4020b2d | 1417 | map.m_next_extent = NULL; |
d5097be5 | 1418 | map.m_seg_type = seg_type; |
f9d6d059 | 1419 | map.m_may_create = may_write; |
003a3e1d | 1420 | |
a7de6086 JK |
1421 | err = f2fs_map_blocks(inode, &map, create, flag); |
1422 | if (!err) { | |
003a3e1d JK |
1423 | map_bh(bh, inode->i_sb, map.m_pblk); |
1424 | bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; | |
b86e3307 | 1425 | bh->b_size = (u64)map.m_len << inode->i_blkbits; |
003a3e1d | 1426 | } |
a7de6086 | 1427 | return err; |
003a3e1d JK |
1428 | } |
1429 | ||
ccfb3000 | 1430 | static int get_data_block(struct inode *inode, sector_t iblock, |
da85985c CY |
1431 | struct buffer_head *bh_result, int create, int flag, |
1432 | pgoff_t *next_pgofs) | |
e2b4e2bc | 1433 | { |
da85985c | 1434 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1435 | flag, next_pgofs, |
f9d6d059 CY |
1436 | NO_CHECK_TYPE, create); |
1437 | } | |
1438 | ||
1439 | static int get_data_block_dio_write(struct inode *inode, sector_t iblock, | |
1440 | struct buffer_head *bh_result, int create) | |
1441 | { | |
1442 | return __get_data_block(inode, iblock, bh_result, create, | |
1443 | F2FS_GET_BLOCK_DIO, NULL, | |
1444 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
75a037f3 | 1445 | IS_SWAPFILE(inode) ? false : true); |
e2b4e2bc CY |
1446 | } |
1447 | ||
1448 | static int get_data_block_dio(struct inode *inode, sector_t iblock, | |
ccfb3000 JK |
1449 | struct buffer_head *bh_result, int create) |
1450 | { | |
e2b4e2bc | 1451 | return __get_data_block(inode, iblock, bh_result, create, |
f9d6d059 CY |
1452 | F2FS_GET_BLOCK_DIO, NULL, |
1453 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1454 | false); | |
ccfb3000 JK |
1455 | } |
1456 | ||
e2b4e2bc | 1457 | static int get_data_block_bmap(struct inode *inode, sector_t iblock, |
ccfb3000 JK |
1458 | struct buffer_head *bh_result, int create) |
1459 | { | |
179448bf | 1460 | /* Block number less than F2FS MAX BLOCKS */ |
e0afc4d6 | 1461 | if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks)) |
179448bf YH |
1462 | return -EFBIG; |
1463 | ||
e2b4e2bc | 1464 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1465 | F2FS_GET_BLOCK_BMAP, NULL, |
f9d6d059 | 1466 | NO_CHECK_TYPE, create); |
ccfb3000 JK |
1467 | } |
1468 | ||
7f63eb77 JK |
1469 | static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) |
1470 | { | |
1471 | return (offset >> inode->i_blkbits); | |
1472 | } | |
1473 | ||
1474 | static inline loff_t blk_to_logical(struct inode *inode, sector_t blk) | |
1475 | { | |
1476 | return (blk << inode->i_blkbits); | |
1477 | } | |
1478 | ||
442a9dbd CY |
1479 | static int f2fs_xattr_fiemap(struct inode *inode, |
1480 | struct fiemap_extent_info *fieinfo) | |
1481 | { | |
1482 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1483 | struct page *page; | |
1484 | struct node_info ni; | |
1485 | __u64 phys = 0, len; | |
1486 | __u32 flags; | |
1487 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1488 | int err = 0; | |
1489 | ||
1490 | if (f2fs_has_inline_xattr(inode)) { | |
1491 | int offset; | |
1492 | ||
1493 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1494 | inode->i_ino, false); | |
1495 | if (!page) | |
1496 | return -ENOMEM; | |
1497 | ||
7735730d CY |
1498 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1499 | if (err) { | |
1500 | f2fs_put_page(page, 1); | |
1501 | return err; | |
1502 | } | |
442a9dbd CY |
1503 | |
1504 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1505 | offset = offsetof(struct f2fs_inode, i_addr) + | |
1506 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1507 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1508 | |
1509 | phys += offset; | |
1510 | len = inline_xattr_size(inode); | |
1511 | ||
1512 | f2fs_put_page(page, 1); | |
1513 | ||
1514 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1515 | ||
1516 | if (!xnid) | |
1517 | flags |= FIEMAP_EXTENT_LAST; | |
1518 | ||
1519 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1520 | if (err || err == 1) | |
1521 | return err; | |
1522 | } | |
1523 | ||
1524 | if (xnid) { | |
1525 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1526 | if (!page) | |
1527 | return -ENOMEM; | |
1528 | ||
7735730d CY |
1529 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1530 | if (err) { | |
1531 | f2fs_put_page(page, 1); | |
1532 | return err; | |
1533 | } | |
442a9dbd CY |
1534 | |
1535 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1536 | len = inode->i_sb->s_blocksize; | |
1537 | ||
1538 | f2fs_put_page(page, 1); | |
1539 | ||
1540 | flags = FIEMAP_EXTENT_LAST; | |
1541 | } | |
1542 | ||
1543 | if (phys) | |
1544 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1545 | ||
1546 | return (err < 0 ? err : 0); | |
1547 | } | |
1548 | ||
9ab70134 JK |
1549 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1550 | u64 start, u64 len) | |
1551 | { | |
7f63eb77 JK |
1552 | struct buffer_head map_bh; |
1553 | sector_t start_blk, last_blk; | |
da85985c | 1554 | pgoff_t next_pgofs; |
7f63eb77 JK |
1555 | u64 logical = 0, phys = 0, size = 0; |
1556 | u32 flags = 0; | |
7f63eb77 JK |
1557 | int ret = 0; |
1558 | ||
c4020b2d CY |
1559 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1560 | ret = f2fs_precache_extents(inode); | |
1561 | if (ret) | |
1562 | return ret; | |
1563 | } | |
1564 | ||
442a9dbd | 1565 | ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1566 | if (ret) |
1567 | return ret; | |
1568 | ||
f1b43d4c CY |
1569 | inode_lock(inode); |
1570 | ||
442a9dbd CY |
1571 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1572 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1573 | goto out; | |
1574 | } | |
1575 | ||
7975f349 | 1576 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1577 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1578 | if (ret != -EAGAIN) | |
f1b43d4c | 1579 | goto out; |
67f8cf3c JK |
1580 | } |
1581 | ||
7f63eb77 JK |
1582 | if (logical_to_blk(inode, len) == 0) |
1583 | len = blk_to_logical(inode, 1); | |
1584 | ||
1585 | start_blk = logical_to_blk(inode, start); | |
1586 | last_blk = logical_to_blk(inode, start + len - 1); | |
9a950d52 | 1587 | |
7f63eb77 JK |
1588 | next: |
1589 | memset(&map_bh, 0, sizeof(struct buffer_head)); | |
1590 | map_bh.b_size = len; | |
1591 | ||
e2b4e2bc | 1592 | ret = get_data_block(inode, start_blk, &map_bh, 0, |
da85985c | 1593 | F2FS_GET_BLOCK_FIEMAP, &next_pgofs); |
7f63eb77 JK |
1594 | if (ret) |
1595 | goto out; | |
1596 | ||
1597 | /* HOLE */ | |
1598 | if (!buffer_mapped(&map_bh)) { | |
da85985c | 1599 | start_blk = next_pgofs; |
58736fa6 CY |
1600 | |
1601 | if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, | |
1602 | F2FS_I_SB(inode)->max_file_blocks)) | |
9a950d52 | 1603 | goto prep_next; |
58736fa6 | 1604 | |
9a950d52 FL |
1605 | flags |= FIEMAP_EXTENT_LAST; |
1606 | } | |
7f63eb77 | 1607 | |
da5af127 | 1608 | if (size) { |
62230e0d | 1609 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1610 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1611 | ||
9a950d52 FL |
1612 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1613 | phys, size, flags); | |
da5af127 | 1614 | } |
7f63eb77 | 1615 | |
9a950d52 FL |
1616 | if (start_blk > last_blk || ret) |
1617 | goto out; | |
7f63eb77 | 1618 | |
9a950d52 FL |
1619 | logical = blk_to_logical(inode, start_blk); |
1620 | phys = blk_to_logical(inode, map_bh.b_blocknr); | |
1621 | size = map_bh.b_size; | |
1622 | flags = 0; | |
1623 | if (buffer_unwritten(&map_bh)) | |
1624 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
7f63eb77 | 1625 | |
9a950d52 | 1626 | start_blk += logical_to_blk(inode, size); |
7f63eb77 | 1627 | |
9a950d52 | 1628 | prep_next: |
7f63eb77 JK |
1629 | cond_resched(); |
1630 | if (fatal_signal_pending(current)) | |
1631 | ret = -EINTR; | |
1632 | else | |
1633 | goto next; | |
1634 | out: | |
1635 | if (ret == 1) | |
1636 | ret = 0; | |
1637 | ||
5955102c | 1638 | inode_unlock(inode); |
7f63eb77 | 1639 | return ret; |
9ab70134 JK |
1640 | } |
1641 | ||
95ae251f EB |
1642 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
1643 | { | |
1644 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
1645 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
1646 | return inode->i_sb->s_maxbytes; | |
1647 | ||
1648 | return i_size_read(inode); | |
1649 | } | |
1650 | ||
2df0ab04 CY |
1651 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
1652 | unsigned nr_pages, | |
1653 | struct f2fs_map_blocks *map, | |
1654 | struct bio **bio_ret, | |
1655 | sector_t *last_block_in_bio, | |
1656 | bool is_readahead) | |
1657 | { | |
1658 | struct bio *bio = *bio_ret; | |
1659 | const unsigned blkbits = inode->i_blkbits; | |
1660 | const unsigned blocksize = 1 << blkbits; | |
1661 | sector_t block_in_file; | |
1662 | sector_t last_block; | |
1663 | sector_t last_block_in_file; | |
1664 | sector_t block_nr; | |
1665 | int ret = 0; | |
1666 | ||
4969c06a | 1667 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 1668 | last_block = block_in_file + nr_pages; |
95ae251f | 1669 | last_block_in_file = (f2fs_readpage_limit(inode) + blocksize - 1) >> |
2df0ab04 CY |
1670 | blkbits; |
1671 | if (last_block > last_block_in_file) | |
1672 | last_block = last_block_in_file; | |
1673 | ||
1674 | /* just zeroing out page which is beyond EOF */ | |
1675 | if (block_in_file >= last_block) | |
1676 | goto zero_out; | |
1677 | /* | |
1678 | * Map blocks using the previous result first. | |
1679 | */ | |
1680 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
1681 | block_in_file > map->m_lblk && | |
1682 | block_in_file < (map->m_lblk + map->m_len)) | |
1683 | goto got_it; | |
1684 | ||
1685 | /* | |
1686 | * Then do more f2fs_map_blocks() calls until we are | |
1687 | * done with this page. | |
1688 | */ | |
1689 | map->m_lblk = block_in_file; | |
1690 | map->m_len = last_block - block_in_file; | |
1691 | ||
1692 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1693 | if (ret) | |
1694 | goto out; | |
1695 | got_it: | |
1696 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
1697 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
1698 | SetPageMappedToDisk(page); | |
1699 | ||
4969c06a JK |
1700 | if (!PageUptodate(page) && (!PageSwapCache(page) && |
1701 | !cleancache_get_page(page))) { | |
2df0ab04 CY |
1702 | SetPageUptodate(page); |
1703 | goto confused; | |
1704 | } | |
1705 | ||
1706 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
93770ab7 | 1707 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 1708 | ret = -EFSCORRUPTED; |
2df0ab04 CY |
1709 | goto out; |
1710 | } | |
1711 | } else { | |
1712 | zero_out: | |
1713 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
1714 | if (f2fs_need_verity(inode, page->index) && |
1715 | !fsverity_verify_page(page)) { | |
1716 | ret = -EIO; | |
1717 | goto out; | |
1718 | } | |
2df0ab04 CY |
1719 | if (!PageUptodate(page)) |
1720 | SetPageUptodate(page); | |
1721 | unlock_page(page); | |
1722 | goto out; | |
1723 | } | |
1724 | ||
1725 | /* | |
1726 | * This page will go to BIO. Do we need to send this | |
1727 | * BIO off first? | |
1728 | */ | |
8896cbdf CY |
1729 | if (bio && !page_is_mergeable(F2FS_I_SB(inode), bio, |
1730 | *last_block_in_bio, block_nr)) { | |
2df0ab04 CY |
1731 | submit_and_realloc: |
1732 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
1733 | bio = NULL; | |
1734 | } | |
1735 | if (bio == NULL) { | |
1736 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
95ae251f | 1737 | is_readahead ? REQ_RAHEAD : 0, page->index); |
2df0ab04 CY |
1738 | if (IS_ERR(bio)) { |
1739 | ret = PTR_ERR(bio); | |
1740 | bio = NULL; | |
1741 | goto out; | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | /* | |
1746 | * If the page is under writeback, we need to wait for | |
1747 | * its completion to see the correct decrypted data. | |
1748 | */ | |
1749 | f2fs_wait_on_block_writeback(inode, block_nr); | |
1750 | ||
1751 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
1752 | goto submit_and_realloc; | |
1753 | ||
1754 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
1755 | ClearPageError(page); | |
1756 | *last_block_in_bio = block_nr; | |
1757 | goto out; | |
1758 | confused: | |
1759 | if (bio) { | |
1760 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
1761 | bio = NULL; | |
1762 | } | |
1763 | unlock_page(page); | |
1764 | out: | |
1765 | *bio_ret = bio; | |
1766 | return ret; | |
1767 | } | |
1768 | ||
f1e88660 JK |
1769 | /* |
1770 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
1771 | * Major change was from block_size == page_size in f2fs by default. | |
e2e59414 JK |
1772 | * |
1773 | * Note that the aops->readpages() function is ONLY used for read-ahead. If | |
1774 | * this function ever deviates from doing just read-ahead, it should either | |
1775 | * use ->readpage() or do the necessary surgery to decouple ->readpages() | |
1776 | * from read-ahead. | |
f1e88660 JK |
1777 | */ |
1778 | static int f2fs_mpage_readpages(struct address_space *mapping, | |
1779 | struct list_head *pages, struct page *page, | |
e2e59414 | 1780 | unsigned nr_pages, bool is_readahead) |
f1e88660 JK |
1781 | { |
1782 | struct bio *bio = NULL; | |
f1e88660 JK |
1783 | sector_t last_block_in_bio = 0; |
1784 | struct inode *inode = mapping->host; | |
f1e88660 | 1785 | struct f2fs_map_blocks map; |
2df0ab04 | 1786 | int ret = 0; |
f1e88660 JK |
1787 | |
1788 | map.m_pblk = 0; | |
1789 | map.m_lblk = 0; | |
1790 | map.m_len = 0; | |
1791 | map.m_flags = 0; | |
da85985c | 1792 | map.m_next_pgofs = NULL; |
c4020b2d | 1793 | map.m_next_extent = NULL; |
d5097be5 | 1794 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 1795 | map.m_may_create = false; |
f1e88660 | 1796 | |
736c0a74 | 1797 | for (; nr_pages; nr_pages--) { |
f1e88660 | 1798 | if (pages) { |
939afa94 | 1799 | page = list_last_entry(pages, struct page, lru); |
a83d50bc KM |
1800 | |
1801 | prefetchw(&page->flags); | |
f1e88660 JK |
1802 | list_del(&page->lru); |
1803 | if (add_to_page_cache_lru(page, mapping, | |
4969c06a | 1804 | page_index(page), |
8a5c743e | 1805 | readahead_gfp_mask(mapping))) |
f1e88660 JK |
1806 | goto next_page; |
1807 | } | |
1808 | ||
2df0ab04 CY |
1809 | ret = f2fs_read_single_page(inode, page, nr_pages, &map, &bio, |
1810 | &last_block_in_bio, is_readahead); | |
1811 | if (ret) { | |
1812 | SetPageError(page); | |
09cbfeaf | 1813 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 1814 | unlock_page(page); |
f1e88660 | 1815 | } |
f1e88660 JK |
1816 | next_page: |
1817 | if (pages) | |
09cbfeaf | 1818 | put_page(page); |
f1e88660 JK |
1819 | } |
1820 | BUG_ON(pages && !list_empty(pages)); | |
1821 | if (bio) | |
4fc29c1a | 1822 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
2df0ab04 | 1823 | return pages ? 0 : ret; |
f1e88660 JK |
1824 | } |
1825 | ||
eb47b800 JK |
1826 | static int f2fs_read_data_page(struct file *file, struct page *page) |
1827 | { | |
4969c06a | 1828 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 1829 | int ret = -EAGAIN; |
9ffe0fb5 | 1830 | |
c20e89cd CY |
1831 | trace_f2fs_readpage(page, DATA); |
1832 | ||
e1c42045 | 1833 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
1834 | if (f2fs_has_inline_data(inode)) |
1835 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 1836 | if (ret == -EAGAIN) |
4969c06a JK |
1837 | ret = f2fs_mpage_readpages(page_file_mapping(page), |
1838 | NULL, page, 1, false); | |
9ffe0fb5 | 1839 | return ret; |
eb47b800 JK |
1840 | } |
1841 | ||
1842 | static int f2fs_read_data_pages(struct file *file, | |
1843 | struct address_space *mapping, | |
1844 | struct list_head *pages, unsigned nr_pages) | |
1845 | { | |
71cb4aff | 1846 | struct inode *inode = mapping->host; |
939afa94 | 1847 | struct page *page = list_last_entry(pages, struct page, lru); |
b8c29400 CY |
1848 | |
1849 | trace_f2fs_readpages(inode, page, nr_pages); | |
9ffe0fb5 HL |
1850 | |
1851 | /* If the file has inline data, skip readpages */ | |
1852 | if (f2fs_has_inline_data(inode)) | |
1853 | return 0; | |
1854 | ||
e2e59414 | 1855 | return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true); |
eb47b800 JK |
1856 | } |
1857 | ||
7eab0c0d HP |
1858 | static int encrypt_one_page(struct f2fs_io_info *fio) |
1859 | { | |
1860 | struct inode *inode = fio->page->mapping->host; | |
6aa58d8a | 1861 | struct page *mpage; |
7eab0c0d HP |
1862 | gfp_t gfp_flags = GFP_NOFS; |
1863 | ||
1958593e | 1864 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
1865 | return 0; |
1866 | ||
6dbb1796 | 1867 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 1868 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d HP |
1869 | |
1870 | retry_encrypt: | |
53bc1d85 EB |
1871 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(fio->page, |
1872 | PAGE_SIZE, 0, | |
1873 | gfp_flags); | |
6aa58d8a CY |
1874 | if (IS_ERR(fio->encrypted_page)) { |
1875 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
1876 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
1877 | f2fs_flush_merged_writes(fio->sbi); | |
1878 | congestion_wait(BLK_RW_ASYNC, HZ/50); | |
1879 | gfp_flags |= __GFP_NOFAIL; | |
1880 | goto retry_encrypt; | |
1881 | } | |
1882 | return PTR_ERR(fio->encrypted_page); | |
1883 | } | |
7eab0c0d | 1884 | |
6aa58d8a CY |
1885 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
1886 | if (mpage) { | |
1887 | if (PageUptodate(mpage)) | |
1888 | memcpy(page_address(mpage), | |
1889 | page_address(fio->encrypted_page), PAGE_SIZE); | |
1890 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 1891 | } |
6aa58d8a | 1892 | return 0; |
7eab0c0d HP |
1893 | } |
1894 | ||
bb9e3bb8 CY |
1895 | static inline bool check_inplace_update_policy(struct inode *inode, |
1896 | struct f2fs_io_info *fio) | |
7eab0c0d | 1897 | { |
bb9e3bb8 CY |
1898 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1899 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 1900 | |
bb9e3bb8 CY |
1901 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
1902 | return true; | |
4d57b86d | 1903 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
1904 | return true; |
1905 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
1906 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
1907 | return true; | |
4d57b86d | 1908 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
1909 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
1910 | return true; | |
1911 | ||
1912 | /* | |
1913 | * IPU for rewrite async pages | |
1914 | */ | |
1915 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
1916 | fio && fio->op == REQ_OP_WRITE && | |
1917 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 1918 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
1919 | return true; |
1920 | ||
1921 | /* this is only set during fdatasync */ | |
1922 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
1923 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
1924 | return true; | |
1925 | ||
4354994f DR |
1926 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1927 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1928 | return true; | |
1929 | ||
bb9e3bb8 CY |
1930 | return false; |
1931 | } | |
1932 | ||
4d57b86d | 1933 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 1934 | { |
1ad71a27 JK |
1935 | if (f2fs_is_pinned_file(inode)) |
1936 | return true; | |
bb9e3bb8 CY |
1937 | |
1938 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
1939 | if (file_is_cold(inode)) | |
1940 | return true; | |
1941 | ||
1942 | return check_inplace_update_policy(inode, fio); | |
1943 | } | |
1944 | ||
4d57b86d | 1945 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
1946 | { |
1947 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1948 | ||
1949 | if (test_opt(sbi, LFS)) | |
1950 | return true; | |
1951 | if (S_ISDIR(inode->i_mode)) | |
1952 | return true; | |
af033b2a CY |
1953 | if (IS_NOQUOTA(inode)) |
1954 | return true; | |
bb9e3bb8 CY |
1955 | if (f2fs_is_atomic_file(inode)) |
1956 | return true; | |
1957 | if (fio) { | |
1958 | if (is_cold_data(fio->page)) | |
1959 | return true; | |
1960 | if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) | |
1961 | return true; | |
4354994f DR |
1962 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
1963 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
1964 | return true; | |
bb9e3bb8 CY |
1965 | } |
1966 | return false; | |
1967 | } | |
1968 | ||
7eab0c0d HP |
1969 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
1970 | { | |
1971 | struct inode *inode = fio->page->mapping->host; | |
1972 | ||
4d57b86d | 1973 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
1974 | return false; |
1975 | ||
4d57b86d | 1976 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
1977 | } |
1978 | ||
4d57b86d | 1979 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 1980 | { |
05ca3632 | 1981 | struct page *page = fio->page; |
eb47b800 | 1982 | struct inode *inode = page->mapping->host; |
eb47b800 | 1983 | struct dnode_of_data dn; |
e959c8f5 | 1984 | struct extent_info ei = {0,0,0}; |
7735730d | 1985 | struct node_info ni; |
e959c8f5 | 1986 | bool ipu_force = false; |
eb47b800 JK |
1987 | int err = 0; |
1988 | ||
1989 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
1990 | if (need_inplace_update(fio) && |
1991 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
1992 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 1993 | |
c9b60788 | 1994 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
93770ab7 | 1995 | DATA_GENERIC_ENHANCE)) |
10f966bb | 1996 | return -EFSCORRUPTED; |
c9b60788 CY |
1997 | |
1998 | ipu_force = true; | |
1999 | fio->need_lock = LOCK_DONE; | |
2000 | goto got_it; | |
e959c8f5 | 2001 | } |
279d6df2 | 2002 | |
d29460e5 JK |
2003 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2004 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2005 | return -EAGAIN; | |
279d6df2 | 2006 | |
4d57b86d | 2007 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2008 | if (err) |
279d6df2 | 2009 | goto out; |
eb47b800 | 2010 | |
28bc106b | 2011 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2012 | |
2013 | /* This page is already truncated */ | |
7a9d7548 | 2014 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2015 | ClearPageUptodate(page); |
2baf0781 | 2016 | clear_cold_data(page); |
eb47b800 | 2017 | goto out_writepage; |
2bca1e23 | 2018 | } |
e959c8f5 | 2019 | got_it: |
c9b60788 CY |
2020 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2021 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2022 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2023 | err = -EFSCORRUPTED; |
c9b60788 CY |
2024 | goto out_writepage; |
2025 | } | |
eb47b800 JK |
2026 | /* |
2027 | * If current allocation needs SSR, | |
2028 | * it had better in-place writes for updated data. | |
2029 | */ | |
93770ab7 CY |
2030 | if (ipu_force || |
2031 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2032 | need_inplace_update(fio))) { |
cc15620b JK |
2033 | err = encrypt_one_page(fio); |
2034 | if (err) | |
2035 | goto out_writepage; | |
2036 | ||
2037 | set_page_writeback(page); | |
17c50035 | 2038 | ClearPageError(page); |
279d6df2 | 2039 | f2fs_put_dnode(&dn); |
cc15620b | 2040 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2041 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2042 | err = f2fs_inplace_write_data(fio); |
6492a335 CY |
2043 | if (err) { |
2044 | if (f2fs_encrypted_file(inode)) | |
d2d0727b | 2045 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2046 | if (PageWriteback(page)) |
2047 | end_page_writeback(page); | |
cd23ffa9 CY |
2048 | } else { |
2049 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2050 | } |
7eab0c0d | 2051 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2052 | return err; |
eb47b800 | 2053 | } |
279d6df2 | 2054 | |
cc15620b JK |
2055 | if (fio->need_lock == LOCK_RETRY) { |
2056 | if (!f2fs_trylock_op(fio->sbi)) { | |
2057 | err = -EAGAIN; | |
2058 | goto out_writepage; | |
2059 | } | |
2060 | fio->need_lock = LOCK_REQ; | |
2061 | } | |
2062 | ||
7735730d CY |
2063 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
2064 | if (err) | |
2065 | goto out_writepage; | |
2066 | ||
2067 | fio->version = ni.version; | |
2068 | ||
cc15620b JK |
2069 | err = encrypt_one_page(fio); |
2070 | if (err) | |
2071 | goto out_writepage; | |
2072 | ||
2073 | set_page_writeback(page); | |
17c50035 | 2074 | ClearPageError(page); |
cc15620b | 2075 | |
279d6df2 | 2076 | /* LFS mode write path */ |
4d57b86d | 2077 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2078 | trace_f2fs_do_write_data_page(page, OPU); |
2079 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2080 | if (page->index == 0) | |
2081 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2082 | out_writepage: |
2083 | f2fs_put_dnode(&dn); | |
279d6df2 | 2084 | out: |
cc15620b | 2085 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2086 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2087 | return err; |
2088 | } | |
2089 | ||
d68f735b | 2090 | static int __write_data_page(struct page *page, bool *submitted, |
8648de2c CY |
2091 | struct bio **bio, |
2092 | sector_t *last_block, | |
b0af6d49 CY |
2093 | struct writeback_control *wbc, |
2094 | enum iostat_type io_type) | |
eb47b800 JK |
2095 | { |
2096 | struct inode *inode = page->mapping->host; | |
4081363f | 2097 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 JK |
2098 | loff_t i_size = i_size_read(inode); |
2099 | const pgoff_t end_index = ((unsigned long long) i_size) | |
09cbfeaf | 2100 | >> PAGE_SHIFT; |
26de9b11 | 2101 | loff_t psize = (page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2102 | unsigned offset = 0; |
39936837 | 2103 | bool need_balance_fs = false; |
eb47b800 | 2104 | int err = 0; |
458e6197 | 2105 | struct f2fs_io_info fio = { |
05ca3632 | 2106 | .sbi = sbi, |
39d787be | 2107 | .ino = inode->i_ino, |
458e6197 | 2108 | .type = DATA, |
04d328de | 2109 | .op = REQ_OP_WRITE, |
7637241e | 2110 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2111 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2112 | .page = page, |
4375a336 | 2113 | .encrypted_page = NULL, |
d68f735b | 2114 | .submitted = false, |
cc15620b | 2115 | .need_lock = LOCK_RETRY, |
b0af6d49 | 2116 | .io_type = io_type, |
578c6478 | 2117 | .io_wbc = wbc, |
8648de2c CY |
2118 | .bio = bio, |
2119 | .last_block = last_block, | |
458e6197 | 2120 | }; |
eb47b800 | 2121 | |
ecda0de3 CY |
2122 | trace_f2fs_writepage(page, DATA); |
2123 | ||
db198ae0 CY |
2124 | /* we should bypass data pages to proceed the kworkder jobs */ |
2125 | if (unlikely(f2fs_cp_error(sbi))) { | |
2126 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2127 | /* |
2128 | * don't drop any dirty dentry pages for keeping lastest | |
2129 | * directory structure. | |
2130 | */ | |
2131 | if (S_ISDIR(inode->i_mode)) | |
2132 | goto redirty_out; | |
db198ae0 CY |
2133 | goto out; |
2134 | } | |
2135 | ||
0771fcc7 CY |
2136 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2137 | goto redirty_out; | |
2138 | ||
95ae251f | 2139 | if (page->index < end_index || f2fs_verity_in_progress(inode)) |
39936837 | 2140 | goto write; |
eb47b800 JK |
2141 | |
2142 | /* | |
2143 | * If the offset is out-of-range of file size, | |
2144 | * this page does not have to be written to disk. | |
2145 | */ | |
09cbfeaf | 2146 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2147 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2148 | goto out; |
eb47b800 | 2149 | |
09cbfeaf | 2150 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2151 | write: |
1e84371f JK |
2152 | if (f2fs_is_drop_cache(inode)) |
2153 | goto out; | |
e6e5f561 JK |
2154 | /* we should not write 0'th page having journal header */ |
2155 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
2156 | (!wbc->for_reclaim && | |
4d57b86d | 2157 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 2158 | goto redirty_out; |
eb47b800 | 2159 | |
39936837 | 2160 | /* Dentry blocks are controlled by checkpoint */ |
eb47b800 | 2161 | if (S_ISDIR(inode->i_mode)) { |
cc15620b | 2162 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2163 | err = f2fs_do_write_data_page(&fio); |
8618b881 JK |
2164 | goto done; |
2165 | } | |
9ffe0fb5 | 2166 | |
8618b881 | 2167 | if (!wbc->for_reclaim) |
39936837 | 2168 | need_balance_fs = true; |
7f3037a5 | 2169 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2170 | goto redirty_out; |
ef095d19 JK |
2171 | else |
2172 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2173 | |
b3d208f9 | 2174 | err = -EAGAIN; |
dd7b2333 | 2175 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2176 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2177 | if (!err) |
2178 | goto out; | |
2179 | } | |
279d6df2 | 2180 | |
cc15620b | 2181 | if (err == -EAGAIN) { |
4d57b86d | 2182 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2183 | if (err == -EAGAIN) { |
2184 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2185 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2186 | } |
2187 | } | |
a0d00fad | 2188 | |
eb449797 CY |
2189 | if (err) { |
2190 | file_set_keep_isize(inode); | |
2191 | } else { | |
2192 | down_write(&F2FS_I(inode)->i_sem); | |
2193 | if (F2FS_I(inode)->last_disk_size < psize) | |
2194 | F2FS_I(inode)->last_disk_size = psize; | |
2195 | up_write(&F2FS_I(inode)->i_sem); | |
2196 | } | |
279d6df2 | 2197 | |
8618b881 JK |
2198 | done: |
2199 | if (err && err != -ENOENT) | |
2200 | goto redirty_out; | |
eb47b800 | 2201 | |
39936837 | 2202 | out: |
a7ffdbe2 | 2203 | inode_dec_dirty_pages(inode); |
2baf0781 | 2204 | if (err) { |
2bca1e23 | 2205 | ClearPageUptodate(page); |
2baf0781 CY |
2206 | clear_cold_data(page); |
2207 | } | |
0c3a5797 CY |
2208 | |
2209 | if (wbc->for_reclaim) { | |
bab475c5 | 2210 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2211 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2212 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2213 | submitted = NULL; |
0c3a5797 CY |
2214 | } |
2215 | ||
eb47b800 | 2216 | unlock_page(page); |
186857c5 | 2217 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
8648de2c CY |
2218 | !F2FS_I(inode)->cp_task) { |
2219 | f2fs_submit_ipu_bio(sbi, bio, page); | |
a7881893 | 2220 | f2fs_balance_fs(sbi, need_balance_fs); |
8648de2c | 2221 | } |
0c3a5797 | 2222 | |
d68f735b | 2223 | if (unlikely(f2fs_cp_error(sbi))) { |
8648de2c | 2224 | f2fs_submit_ipu_bio(sbi, bio, page); |
b9109b0e | 2225 | f2fs_submit_merged_write(sbi, DATA); |
d68f735b JK |
2226 | submitted = NULL; |
2227 | } | |
2228 | ||
2229 | if (submitted) | |
2230 | *submitted = fio.submitted; | |
0c3a5797 | 2231 | |
eb47b800 JK |
2232 | return 0; |
2233 | ||
eb47b800 | 2234 | redirty_out: |
76f60268 | 2235 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2236 | /* |
2237 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2238 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2239 | * file_write_and_wait_range() will see EIO error, which is critical | |
2240 | * to return value of fsync() followed by atomic_write failure to user. | |
2241 | */ | |
2242 | if (!err || wbc->for_reclaim) | |
0002b61b | 2243 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2244 | unlock_page(page); |
2245 | return err; | |
fa9150a8 NJ |
2246 | } |
2247 | ||
f566bae8 JK |
2248 | static int f2fs_write_data_page(struct page *page, |
2249 | struct writeback_control *wbc) | |
2250 | { | |
8648de2c | 2251 | return __write_data_page(page, NULL, NULL, NULL, wbc, FS_DATA_IO); |
f566bae8 JK |
2252 | } |
2253 | ||
8f46dcae CY |
2254 | /* |
2255 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2256 | * The major change is making write step of cold data page separately from | |
2257 | * warm/hot data page. | |
2258 | */ | |
2259 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2260 | struct writeback_control *wbc, |
2261 | enum iostat_type io_type) | |
8f46dcae CY |
2262 | { |
2263 | int ret = 0; | |
2264 | int done = 0; | |
2265 | struct pagevec pvec; | |
c29fd0c0 | 2266 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2267 | struct bio *bio = NULL; |
2268 | sector_t last_block; | |
8f46dcae CY |
2269 | int nr_pages; |
2270 | pgoff_t uninitialized_var(writeback_index); | |
2271 | pgoff_t index; | |
2272 | pgoff_t end; /* Inclusive */ | |
2273 | pgoff_t done_index; | |
2274 | int cycled; | |
2275 | int range_whole = 0; | |
10bbd235 | 2276 | xa_mark_t tag; |
bab475c5 | 2277 | int nwritten = 0; |
8f46dcae | 2278 | |
86679820 | 2279 | pagevec_init(&pvec); |
46ae957f | 2280 | |
ef095d19 JK |
2281 | if (get_dirty_pages(mapping->host) <= |
2282 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2283 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2284 | else | |
2285 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2286 | ||
8f46dcae CY |
2287 | if (wbc->range_cyclic) { |
2288 | writeback_index = mapping->writeback_index; /* prev offset */ | |
2289 | index = writeback_index; | |
2290 | if (index == 0) | |
2291 | cycled = 1; | |
2292 | else | |
2293 | cycled = 0; | |
2294 | end = -1; | |
2295 | } else { | |
09cbfeaf KS |
2296 | index = wbc->range_start >> PAGE_SHIFT; |
2297 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2298 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2299 | range_whole = 1; | |
2300 | cycled = 1; /* ignore range_cyclic tests */ | |
2301 | } | |
2302 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2303 | tag = PAGECACHE_TAG_TOWRITE; | |
2304 | else | |
2305 | tag = PAGECACHE_TAG_DIRTY; | |
2306 | retry: | |
2307 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2308 | tag_pages_for_writeback(mapping, index, end); | |
2309 | done_index = index; | |
2310 | while (!done && (index <= end)) { | |
2311 | int i; | |
2312 | ||
69c4f35d | 2313 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2314 | tag); |
8f46dcae CY |
2315 | if (nr_pages == 0) |
2316 | break; | |
2317 | ||
2318 | for (i = 0; i < nr_pages; i++) { | |
2319 | struct page *page = pvec.pages[i]; | |
d68f735b | 2320 | bool submitted = false; |
8f46dcae | 2321 | |
f8de4331 | 2322 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2323 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2324 | wbc->sync_mode == WB_SYNC_NONE) { |
2325 | done = 1; | |
2326 | break; | |
2327 | } | |
2328 | ||
8f46dcae | 2329 | done_index = page->index; |
d29460e5 | 2330 | retry_write: |
8f46dcae CY |
2331 | lock_page(page); |
2332 | ||
2333 | if (unlikely(page->mapping != mapping)) { | |
2334 | continue_unlock: | |
2335 | unlock_page(page); | |
2336 | continue; | |
2337 | } | |
2338 | ||
2339 | if (!PageDirty(page)) { | |
2340 | /* someone wrote it for us */ | |
2341 | goto continue_unlock; | |
2342 | } | |
2343 | ||
8f46dcae | 2344 | if (PageWriteback(page)) { |
8648de2c | 2345 | if (wbc->sync_mode != WB_SYNC_NONE) { |
fec1d657 | 2346 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 2347 | DATA, true, true); |
8648de2c CY |
2348 | f2fs_submit_ipu_bio(sbi, &bio, page); |
2349 | } else { | |
8f46dcae | 2350 | goto continue_unlock; |
8648de2c | 2351 | } |
8f46dcae CY |
2352 | } |
2353 | ||
8f46dcae CY |
2354 | if (!clear_page_dirty_for_io(page)) |
2355 | goto continue_unlock; | |
2356 | ||
8648de2c CY |
2357 | ret = __write_data_page(page, &submitted, &bio, |
2358 | &last_block, wbc, io_type); | |
8f46dcae | 2359 | if (unlikely(ret)) { |
0002b61b CY |
2360 | /* |
2361 | * keep nr_to_write, since vfs uses this to | |
2362 | * get # of written pages. | |
2363 | */ | |
2364 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
2365 | unlock_page(page); | |
2366 | ret = 0; | |
2367 | continue; | |
d29460e5 JK |
2368 | } else if (ret == -EAGAIN) { |
2369 | ret = 0; | |
2370 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
2371 | cond_resched(); | |
2372 | congestion_wait(BLK_RW_ASYNC, | |
2373 | HZ/50); | |
2374 | goto retry_write; | |
2375 | } | |
2376 | continue; | |
0002b61b | 2377 | } |
b230e6ca JK |
2378 | done_index = page->index + 1; |
2379 | done = 1; | |
2380 | break; | |
d68f735b | 2381 | } else if (submitted) { |
bab475c5 | 2382 | nwritten++; |
8f46dcae CY |
2383 | } |
2384 | ||
f8de4331 | 2385 | if (--wbc->nr_to_write <= 0 && |
687de7f1 | 2386 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
2387 | done = 1; |
2388 | break; | |
2389 | } | |
2390 | } | |
2391 | pagevec_release(&pvec); | |
2392 | cond_resched(); | |
2393 | } | |
2394 | ||
8f46dcae CY |
2395 | if (!cycled && !done) { |
2396 | cycled = 1; | |
2397 | index = 0; | |
2398 | end = writeback_index - 1; | |
2399 | goto retry; | |
2400 | } | |
2401 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) | |
2402 | mapping->writeback_index = done_index; | |
2403 | ||
bab475c5 | 2404 | if (nwritten) |
b9109b0e | 2405 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 2406 | NULL, 0, DATA); |
8648de2c CY |
2407 | /* submit cached bio of IPU write */ |
2408 | if (bio) | |
2409 | __submit_bio(sbi, bio, DATA); | |
6ca56ca4 | 2410 | |
8f46dcae CY |
2411 | return ret; |
2412 | } | |
2413 | ||
853137ce JK |
2414 | static inline bool __should_serialize_io(struct inode *inode, |
2415 | struct writeback_control *wbc) | |
2416 | { | |
2417 | if (!S_ISREG(inode->i_mode)) | |
2418 | return false; | |
af033b2a CY |
2419 | if (IS_NOQUOTA(inode)) |
2420 | return false; | |
040d2bb3 CY |
2421 | /* to avoid deadlock in path of data flush */ |
2422 | if (F2FS_I(inode)->cp_task) | |
2423 | return false; | |
853137ce JK |
2424 | if (wbc->sync_mode != WB_SYNC_ALL) |
2425 | return true; | |
2426 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
2427 | return true; | |
2428 | return false; | |
2429 | } | |
2430 | ||
fc99fe27 | 2431 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
2432 | struct writeback_control *wbc, |
2433 | enum iostat_type io_type) | |
eb47b800 JK |
2434 | { |
2435 | struct inode *inode = mapping->host; | |
4081363f | 2436 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 2437 | struct blk_plug plug; |
eb47b800 | 2438 | int ret; |
853137ce | 2439 | bool locked = false; |
eb47b800 | 2440 | |
cfb185a1 | 2441 | /* deal with chardevs and other special file */ |
2442 | if (!mapping->a_ops->writepage) | |
2443 | return 0; | |
2444 | ||
6a290544 CY |
2445 | /* skip writing if there is no dirty page in this inode */ |
2446 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
2447 | return 0; | |
2448 | ||
0771fcc7 CY |
2449 | /* during POR, we don't need to trigger writepage at all. */ |
2450 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
2451 | goto skip_write; | |
2452 | ||
af033b2a CY |
2453 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
2454 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 2455 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 2456 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
2457 | goto skip_write; |
2458 | ||
d323d005 | 2459 | /* skip writing during file defragment */ |
91942321 | 2460 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
2461 | goto skip_write; |
2462 | ||
d31c7c3f YH |
2463 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
2464 | ||
687de7f1 JK |
2465 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
2466 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
2467 | atomic_inc(&sbi->wb_sync_req[DATA]); |
2468 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
2469 | goto skip_write; |
2470 | ||
853137ce JK |
2471 | if (__should_serialize_io(inode, wbc)) { |
2472 | mutex_lock(&sbi->writepages); | |
2473 | locked = true; | |
2474 | } | |
2475 | ||
9dfa1baf | 2476 | blk_start_plug(&plug); |
b0af6d49 | 2477 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 2478 | blk_finish_plug(&plug); |
687de7f1 | 2479 | |
853137ce JK |
2480 | if (locked) |
2481 | mutex_unlock(&sbi->writepages); | |
2482 | ||
687de7f1 | 2483 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 2484 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
2485 | /* |
2486 | * if some pages were truncated, we cannot guarantee its mapping->host | |
2487 | * to detect pending bios. | |
2488 | */ | |
458e6197 | 2489 | |
4d57b86d | 2490 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 2491 | return ret; |
d3baf95d JK |
2492 | |
2493 | skip_write: | |
a7ffdbe2 | 2494 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 2495 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 2496 | return 0; |
eb47b800 JK |
2497 | } |
2498 | ||
b0af6d49 CY |
2499 | static int f2fs_write_data_pages(struct address_space *mapping, |
2500 | struct writeback_control *wbc) | |
2501 | { | |
2502 | struct inode *inode = mapping->host; | |
2503 | ||
2504 | return __f2fs_write_data_pages(mapping, wbc, | |
2505 | F2FS_I(inode)->cp_task == current ? | |
2506 | FS_CP_DATA_IO : FS_DATA_IO); | |
2507 | } | |
2508 | ||
3aab8f82 CY |
2509 | static void f2fs_write_failed(struct address_space *mapping, loff_t to) |
2510 | { | |
2511 | struct inode *inode = mapping->host; | |
819d9153 | 2512 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 2513 | |
95ae251f EB |
2514 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
2515 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
a33c1502 | 2516 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 2517 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 2518 | |
819d9153 | 2519 | truncate_pagecache(inode, i_size); |
c42d28ce CY |
2520 | if (!IS_NOQUOTA(inode)) |
2521 | f2fs_truncate_blocks(inode, i_size, true); | |
a33c1502 | 2522 | |
5a3a2d83 | 2523 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 2524 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
2525 | } |
2526 | } | |
2527 | ||
2aadac08 JK |
2528 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
2529 | struct page *page, loff_t pos, unsigned len, | |
2530 | block_t *blk_addr, bool *node_changed) | |
2531 | { | |
2532 | struct inode *inode = page->mapping->host; | |
2533 | pgoff_t index = page->index; | |
2534 | struct dnode_of_data dn; | |
2535 | struct page *ipage; | |
b4d07a3e | 2536 | bool locked = false; |
e15882b6 | 2537 | struct extent_info ei = {0,0,0}; |
2aadac08 | 2538 | int err = 0; |
2866fb16 | 2539 | int flag; |
2aadac08 | 2540 | |
24b84912 JK |
2541 | /* |
2542 | * we already allocated all the blocks, so we don't need to get | |
2543 | * the block addresses when there is no need to fill the page. | |
2544 | */ | |
dc91de78 | 2545 | if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && |
95ae251f EB |
2546 | !is_inode_flag_set(inode, FI_NO_PREALLOC) && |
2547 | !f2fs_verity_in_progress(inode)) | |
24b84912 JK |
2548 | return 0; |
2549 | ||
2866fb16 SY |
2550 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
2551 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
2552 | flag = F2FS_GET_BLOCK_DEFAULT; | |
2553 | else | |
2554 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
2555 | ||
b4d07a3e | 2556 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 2557 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
2866fb16 | 2558 | __do_map_lock(sbi, flag, true); |
b4d07a3e JK |
2559 | locked = true; |
2560 | } | |
2561 | restart: | |
2aadac08 | 2562 | /* check inline_data */ |
4d57b86d | 2563 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
2564 | if (IS_ERR(ipage)) { |
2565 | err = PTR_ERR(ipage); | |
2566 | goto unlock_out; | |
2567 | } | |
2568 | ||
2569 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
2570 | ||
2571 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 2572 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 2573 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 2574 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d CY |
2575 | if (inode->i_nlink) |
2576 | set_inline_node(ipage); | |
2aadac08 JK |
2577 | } else { |
2578 | err = f2fs_convert_inline_page(&dn, page); | |
2579 | if (err) | |
b4d07a3e JK |
2580 | goto out; |
2581 | if (dn.data_blkaddr == NULL_ADDR) | |
2582 | err = f2fs_get_block(&dn, index); | |
2583 | } | |
2584 | } else if (locked) { | |
2585 | err = f2fs_get_block(&dn, index); | |
2586 | } else { | |
2587 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
2588 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
2589 | } else { | |
b4d07a3e | 2590 | /* hole case */ |
4d57b86d | 2591 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 2592 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 2593 | f2fs_put_dnode(&dn); |
59c9081b YH |
2594 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
2595 | true); | |
2866fb16 | 2596 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
2597 | locked = true; |
2598 | goto restart; | |
2599 | } | |
2aadac08 JK |
2600 | } |
2601 | } | |
b4d07a3e | 2602 | |
2aadac08 JK |
2603 | /* convert_inline_page can make node_changed */ |
2604 | *blk_addr = dn.data_blkaddr; | |
2605 | *node_changed = dn.node_changed; | |
b4d07a3e | 2606 | out: |
2aadac08 JK |
2607 | f2fs_put_dnode(&dn); |
2608 | unlock_out: | |
b4d07a3e | 2609 | if (locked) |
2866fb16 | 2610 | __do_map_lock(sbi, flag, false); |
2aadac08 JK |
2611 | return err; |
2612 | } | |
2613 | ||
eb47b800 JK |
2614 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
2615 | loff_t pos, unsigned len, unsigned flags, | |
2616 | struct page **pagep, void **fsdata) | |
2617 | { | |
2618 | struct inode *inode = mapping->host; | |
4081363f | 2619 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 2620 | struct page *page = NULL; |
09cbfeaf | 2621 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 2622 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 2623 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
2624 | int err = 0; |
2625 | ||
62aed044 CY |
2626 | trace_f2fs_write_begin(inode, pos, len, flags); |
2627 | ||
00e09c0b CY |
2628 | if (!f2fs_is_checkpoint_ready(sbi)) { |
2629 | err = -ENOSPC; | |
4354994f | 2630 | goto fail; |
00e09c0b | 2631 | } |
4354994f | 2632 | |
455e3a58 JK |
2633 | if ((f2fs_is_atomic_file(inode) && |
2634 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
2635 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 2636 | err = -ENOMEM; |
a2e2e76b | 2637 | drop_atomic = true; |
57864ae5 JK |
2638 | goto fail; |
2639 | } | |
2640 | ||
5f727395 JK |
2641 | /* |
2642 | * We should check this at this moment to avoid deadlock on inode page | |
2643 | * and #0 page. The locking rule for inline_data conversion should be: | |
2644 | * lock_page(page #0) -> lock_page(inode_page) | |
2645 | */ | |
2646 | if (index != 0) { | |
2647 | err = f2fs_convert_inline_inode(inode); | |
2648 | if (err) | |
2649 | goto fail; | |
2650 | } | |
afcb7ca0 | 2651 | repeat: |
86d54795 JK |
2652 | /* |
2653 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
2654 | * wait_for_stable_page. Will wait that below with our IO control. | |
2655 | */ | |
01eccef7 | 2656 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 2657 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
2658 | if (!page) { |
2659 | err = -ENOMEM; | |
2660 | goto fail; | |
2661 | } | |
d5f66990 | 2662 | |
eb47b800 JK |
2663 | *pagep = page; |
2664 | ||
2aadac08 JK |
2665 | err = prepare_write_begin(sbi, page, pos, len, |
2666 | &blkaddr, &need_balance); | |
9ba69cf9 | 2667 | if (err) |
2aadac08 | 2668 | goto fail; |
9ba69cf9 | 2669 | |
af033b2a CY |
2670 | if (need_balance && !IS_NOQUOTA(inode) && |
2671 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 2672 | unlock_page(page); |
2c4db1a6 | 2673 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
2674 | lock_page(page); |
2675 | if (page->mapping != mapping) { | |
2676 | /* The page got truncated from under us */ | |
2677 | f2fs_put_page(page, 1); | |
2678 | goto repeat; | |
2679 | } | |
2680 | } | |
2681 | ||
bae0ee7a | 2682 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 2683 | |
649d7df2 JK |
2684 | if (len == PAGE_SIZE || PageUptodate(page)) |
2685 | return 0; | |
eb47b800 | 2686 | |
95ae251f EB |
2687 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
2688 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
2689 | zero_user_segment(page, len, PAGE_SIZE); |
2690 | return 0; | |
2691 | } | |
2692 | ||
2aadac08 | 2693 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 2694 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 2695 | SetPageUptodate(page); |
eb47b800 | 2696 | } else { |
93770ab7 CY |
2697 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
2698 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 2699 | err = -EFSCORRUPTED; |
93770ab7 CY |
2700 | goto fail; |
2701 | } | |
13ba41e3 JK |
2702 | err = f2fs_submit_page_read(inode, page, blkaddr); |
2703 | if (err) | |
78682f79 | 2704 | goto fail; |
d54c795b | 2705 | |
393ff91f | 2706 | lock_page(page); |
6bacf52f | 2707 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
2708 | f2fs_put_page(page, 1); |
2709 | goto repeat; | |
eb47b800 | 2710 | } |
1563ac75 CY |
2711 | if (unlikely(!PageUptodate(page))) { |
2712 | err = -EIO; | |
2713 | goto fail; | |
4375a336 | 2714 | } |
eb47b800 | 2715 | } |
eb47b800 | 2716 | return 0; |
9ba69cf9 | 2717 | |
3aab8f82 | 2718 | fail: |
86531d6b | 2719 | f2fs_put_page(page, 1); |
3aab8f82 | 2720 | f2fs_write_failed(mapping, pos + len); |
a2e2e76b | 2721 | if (drop_atomic) |
4d57b86d | 2722 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 2723 | return err; |
eb47b800 JK |
2724 | } |
2725 | ||
a1dd3c13 JK |
2726 | static int f2fs_write_end(struct file *file, |
2727 | struct address_space *mapping, | |
2728 | loff_t pos, unsigned len, unsigned copied, | |
2729 | struct page *page, void *fsdata) | |
2730 | { | |
2731 | struct inode *inode = page->mapping->host; | |
2732 | ||
dfb2bf38 CY |
2733 | trace_f2fs_write_end(inode, pos, len, copied); |
2734 | ||
649d7df2 JK |
2735 | /* |
2736 | * This should be come from len == PAGE_SIZE, and we expect copied | |
2737 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
2738 | * let generic_perform_write() try to copy data again through copied=0. | |
2739 | */ | |
2740 | if (!PageUptodate(page)) { | |
746e2403 | 2741 | if (unlikely(copied != len)) |
649d7df2 JK |
2742 | copied = 0; |
2743 | else | |
2744 | SetPageUptodate(page); | |
2745 | } | |
2746 | if (!copied) | |
2747 | goto unlock_out; | |
2748 | ||
34ba94ba | 2749 | set_page_dirty(page); |
a1dd3c13 | 2750 | |
95ae251f EB |
2751 | if (pos + copied > i_size_read(inode) && |
2752 | !f2fs_verity_in_progress(inode)) | |
fc9581c8 | 2753 | f2fs_i_size_write(inode, pos + copied); |
649d7df2 | 2754 | unlock_out: |
3024c9a1 | 2755 | f2fs_put_page(page, 1); |
d0239e1b | 2756 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
2757 | return copied; |
2758 | } | |
2759 | ||
6f673763 OS |
2760 | static int check_direct_IO(struct inode *inode, struct iov_iter *iter, |
2761 | loff_t offset) | |
944fcfc1 | 2762 | { |
8a56dd96 JK |
2763 | unsigned i_blkbits = READ_ONCE(inode->i_blkbits); |
2764 | unsigned blkbits = i_blkbits; | |
2765 | unsigned blocksize_mask = (1 << blkbits) - 1; | |
2766 | unsigned long align = offset | iov_iter_alignment(iter); | |
2767 | struct block_device *bdev = inode->i_sb->s_bdev; | |
2768 | ||
2769 | if (align & blocksize_mask) { | |
2770 | if (bdev) | |
2771 | blkbits = blksize_bits(bdev_logical_block_size(bdev)); | |
2772 | blocksize_mask = (1 << blkbits) - 1; | |
2773 | if (align & blocksize_mask) | |
2774 | return -EINVAL; | |
2775 | return 1; | |
2776 | } | |
944fcfc1 JK |
2777 | return 0; |
2778 | } | |
2779 | ||
02b16d0a CY |
2780 | static void f2fs_dio_end_io(struct bio *bio) |
2781 | { | |
2782 | struct f2fs_private_dio *dio = bio->bi_private; | |
2783 | ||
2784 | dec_page_count(F2FS_I_SB(dio->inode), | |
2785 | dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
2786 | ||
2787 | bio->bi_private = dio->orig_private; | |
2788 | bio->bi_end_io = dio->orig_end_io; | |
2789 | ||
5222595d | 2790 | kvfree(dio); |
02b16d0a CY |
2791 | |
2792 | bio_endio(bio); | |
2793 | } | |
2794 | ||
2795 | static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode, | |
2796 | loff_t file_offset) | |
2797 | { | |
2798 | struct f2fs_private_dio *dio; | |
2799 | bool write = (bio_op(bio) == REQ_OP_WRITE); | |
02b16d0a CY |
2800 | |
2801 | dio = f2fs_kzalloc(F2FS_I_SB(inode), | |
2802 | sizeof(struct f2fs_private_dio), GFP_NOFS); | |
8e114038 | 2803 | if (!dio) |
02b16d0a | 2804 | goto out; |
02b16d0a CY |
2805 | |
2806 | dio->inode = inode; | |
2807 | dio->orig_end_io = bio->bi_end_io; | |
2808 | dio->orig_private = bio->bi_private; | |
2809 | dio->write = write; | |
2810 | ||
2811 | bio->bi_end_io = f2fs_dio_end_io; | |
2812 | bio->bi_private = dio; | |
2813 | ||
2814 | inc_page_count(F2FS_I_SB(inode), | |
2815 | write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
2816 | ||
2817 | submit_bio(bio); | |
2818 | return; | |
2819 | out: | |
2820 | bio->bi_status = BLK_STS_IOERR; | |
2821 | bio_endio(bio); | |
2822 | } | |
2823 | ||
c8b8e32d | 2824 | static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
eb47b800 | 2825 | { |
b439b103 | 2826 | struct address_space *mapping = iocb->ki_filp->f_mapping; |
3aab8f82 | 2827 | struct inode *inode = mapping->host; |
0cdd3195 | 2828 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f847c699 | 2829 | struct f2fs_inode_info *fi = F2FS_I(inode); |
3aab8f82 | 2830 | size_t count = iov_iter_count(iter); |
c8b8e32d | 2831 | loff_t offset = iocb->ki_pos; |
82e0a5aa | 2832 | int rw = iov_iter_rw(iter); |
3aab8f82 | 2833 | int err; |
0cdd3195 | 2834 | enum rw_hint hint = iocb->ki_hint; |
63189b78 | 2835 | int whint_mode = F2FS_OPTION(sbi).whint_mode; |
f847c699 | 2836 | bool do_opu; |
944fcfc1 | 2837 | |
b439b103 | 2838 | err = check_direct_IO(inode, iter, offset); |
b9d777b8 | 2839 | if (err) |
8a56dd96 | 2840 | return err < 0 ? err : 0; |
9ffe0fb5 | 2841 | |
f847c699 | 2842 | if (f2fs_force_buffered_io(inode, iocb, iter)) |
36abef4e | 2843 | return 0; |
fcc85a4d | 2844 | |
f847c699 CY |
2845 | do_opu = allow_outplace_dio(inode, iocb, iter); |
2846 | ||
5302fb00 | 2847 | trace_f2fs_direct_IO_enter(inode, offset, count, rw); |
70407fad | 2848 | |
0cdd3195 HL |
2849 | if (rw == WRITE && whint_mode == WHINT_MODE_OFF) |
2850 | iocb->ki_hint = WRITE_LIFE_NOT_SET; | |
2851 | ||
f847c699 CY |
2852 | if (iocb->ki_flags & IOCB_NOWAIT) { |
2853 | if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { | |
2854 | iocb->ki_hint = hint; | |
2855 | err = -EAGAIN; | |
2856 | goto out; | |
2857 | } | |
2858 | if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { | |
2859 | up_read(&fi->i_gc_rwsem[rw]); | |
b91050a8 HL |
2860 | iocb->ki_hint = hint; |
2861 | err = -EAGAIN; | |
2862 | goto out; | |
2863 | } | |
f847c699 CY |
2864 | } else { |
2865 | down_read(&fi->i_gc_rwsem[rw]); | |
2866 | if (do_opu) | |
2867 | down_read(&fi->i_gc_rwsem[READ]); | |
b91050a8 HL |
2868 | } |
2869 | ||
02b16d0a | 2870 | err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, |
f9d6d059 CY |
2871 | iter, rw == WRITE ? get_data_block_dio_write : |
2872 | get_data_block_dio, NULL, f2fs_dio_submit_bio, | |
02b16d0a | 2873 | DIO_LOCKING | DIO_SKIP_HOLES); |
f847c699 CY |
2874 | |
2875 | if (do_opu) | |
2876 | up_read(&fi->i_gc_rwsem[READ]); | |
2877 | ||
2878 | up_read(&fi->i_gc_rwsem[rw]); | |
82e0a5aa CY |
2879 | |
2880 | if (rw == WRITE) { | |
0cdd3195 HL |
2881 | if (whint_mode == WHINT_MODE_OFF) |
2882 | iocb->ki_hint = hint; | |
b0af6d49 CY |
2883 | if (err > 0) { |
2884 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
2885 | err); | |
f847c699 CY |
2886 | if (!do_opu) |
2887 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
b0af6d49 | 2888 | } else if (err < 0) { |
6bfc4919 | 2889 | f2fs_write_failed(mapping, offset + count); |
b0af6d49 | 2890 | } |
6bfc4919 | 2891 | } |
70407fad | 2892 | |
b91050a8 | 2893 | out: |
5302fb00 | 2894 | trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); |
70407fad | 2895 | |
3aab8f82 | 2896 | return err; |
eb47b800 JK |
2897 | } |
2898 | ||
487261f3 CY |
2899 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
2900 | unsigned int length) | |
eb47b800 JK |
2901 | { |
2902 | struct inode *inode = page->mapping->host; | |
487261f3 | 2903 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 2904 | |
487261f3 | 2905 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 2906 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
2907 | return; |
2908 | ||
487261f3 | 2909 | if (PageDirty(page)) { |
933439c8 | 2910 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 2911 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 2912 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 2913 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 2914 | } else { |
487261f3 | 2915 | inode_dec_dirty_pages(inode); |
4d57b86d | 2916 | f2fs_remove_dirty_inode(inode); |
933439c8 | 2917 | } |
487261f3 | 2918 | } |
decd36b6 | 2919 | |
2baf0781 CY |
2920 | clear_cold_data(page); |
2921 | ||
decd36b6 | 2922 | if (IS_ATOMIC_WRITTEN_PAGE(page)) |
4d57b86d | 2923 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 2924 | |
240a5915 | 2925 | f2fs_clear_page_private(page); |
eb47b800 JK |
2926 | } |
2927 | ||
487261f3 | 2928 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 2929 | { |
f68daeeb JK |
2930 | /* If this is dirty page, keep PagePrivate */ |
2931 | if (PageDirty(page)) | |
2932 | return 0; | |
2933 | ||
decd36b6 CY |
2934 | /* This is atomic written page, keep Private */ |
2935 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
2936 | return 0; | |
2937 | ||
2baf0781 | 2938 | clear_cold_data(page); |
240a5915 | 2939 | f2fs_clear_page_private(page); |
c3850aa1 | 2940 | return 1; |
eb47b800 JK |
2941 | } |
2942 | ||
2943 | static int f2fs_set_data_page_dirty(struct page *page) | |
2944 | { | |
4969c06a | 2945 | struct inode *inode = page_file_mapping(page)->host; |
eb47b800 | 2946 | |
26c6b887 JK |
2947 | trace_f2fs_set_page_dirty(page, DATA); |
2948 | ||
237c0790 JK |
2949 | if (!PageUptodate(page)) |
2950 | SetPageUptodate(page); | |
4969c06a JK |
2951 | if (PageSwapCache(page)) |
2952 | return __set_page_dirty_nobuffers(page); | |
34ba94ba | 2953 | |
5fe45743 | 2954 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
decd36b6 | 2955 | if (!IS_ATOMIC_WRITTEN_PAGE(page)) { |
4d57b86d | 2956 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
2957 | return 1; |
2958 | } | |
2959 | /* | |
2960 | * Previously, this page has been registered, we just | |
2961 | * return here. | |
2962 | */ | |
2963 | return 0; | |
34ba94ba JK |
2964 | } |
2965 | ||
eb47b800 | 2966 | if (!PageDirty(page)) { |
b87078ad | 2967 | __set_page_dirty_nobuffers(page); |
4d57b86d | 2968 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
2969 | return 1; |
2970 | } | |
2971 | return 0; | |
2972 | } | |
2973 | ||
c01e54b7 JK |
2974 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
2975 | { | |
454ae7e5 CY |
2976 | struct inode *inode = mapping->host; |
2977 | ||
1d373a0e JK |
2978 | if (f2fs_has_inline_data(inode)) |
2979 | return 0; | |
2980 | ||
2981 | /* make sure allocating whole blocks */ | |
2982 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
2983 | filemap_write_and_wait(mapping); | |
2984 | ||
e2b4e2bc | 2985 | return generic_block_bmap(mapping, block, get_data_block_bmap); |
429511cd CY |
2986 | } |
2987 | ||
5b7a487c WG |
2988 | #ifdef CONFIG_MIGRATION |
2989 | #include <linux/migrate.h> | |
2990 | ||
2991 | int f2fs_migrate_page(struct address_space *mapping, | |
2992 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
2993 | { | |
2994 | int rc, extra_count; | |
2995 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
2996 | bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); | |
2997 | ||
2998 | BUG_ON(PageWriteback(page)); | |
2999 | ||
3000 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
3001 | if (atomic_written) { |
3002 | if (mode != MIGRATE_SYNC) | |
3003 | return -EBUSY; | |
3004 | if (!mutex_trylock(&fi->inmem_lock)) | |
3005 | return -EAGAIN; | |
3006 | } | |
5b7a487c | 3007 | |
240a5915 CY |
3008 | /* one extra reference was held for atomic_write page */ |
3009 | extra_count = atomic_written ? 1 : 0; | |
5b7a487c | 3010 | rc = migrate_page_move_mapping(mapping, newpage, |
37109694 | 3011 | page, extra_count); |
5b7a487c WG |
3012 | if (rc != MIGRATEPAGE_SUCCESS) { |
3013 | if (atomic_written) | |
3014 | mutex_unlock(&fi->inmem_lock); | |
3015 | return rc; | |
3016 | } | |
3017 | ||
3018 | if (atomic_written) { | |
3019 | struct inmem_pages *cur; | |
3020 | list_for_each_entry(cur, &fi->inmem_pages, list) | |
3021 | if (cur->page == page) { | |
3022 | cur->page = newpage; | |
3023 | break; | |
3024 | } | |
3025 | mutex_unlock(&fi->inmem_lock); | |
3026 | put_page(page); | |
3027 | get_page(newpage); | |
3028 | } | |
3029 | ||
240a5915 CY |
3030 | if (PagePrivate(page)) { |
3031 | f2fs_set_page_private(newpage, page_private(page)); | |
3032 | f2fs_clear_page_private(page); | |
3033 | } | |
5b7a487c | 3034 | |
2916ecc0 JG |
3035 | if (mode != MIGRATE_SYNC_NO_COPY) |
3036 | migrate_page_copy(newpage, page); | |
3037 | else | |
3038 | migrate_page_states(newpage, page); | |
5b7a487c WG |
3039 | |
3040 | return MIGRATEPAGE_SUCCESS; | |
3041 | } | |
3042 | #endif | |
3043 | ||
4969c06a JK |
3044 | #ifdef CONFIG_SWAP |
3045 | /* Copied from generic_swapfile_activate() to check any holes */ | |
3046 | static int check_swap_activate(struct file *swap_file, unsigned int max) | |
3047 | { | |
3048 | struct address_space *mapping = swap_file->f_mapping; | |
3049 | struct inode *inode = mapping->host; | |
3050 | unsigned blocks_per_page; | |
3051 | unsigned long page_no; | |
3052 | unsigned blkbits; | |
3053 | sector_t probe_block; | |
3054 | sector_t last_block; | |
3055 | sector_t lowest_block = -1; | |
3056 | sector_t highest_block = 0; | |
3057 | ||
3058 | blkbits = inode->i_blkbits; | |
3059 | blocks_per_page = PAGE_SIZE >> blkbits; | |
3060 | ||
3061 | /* | |
3062 | * Map all the blocks into the extent list. This code doesn't try | |
3063 | * to be very smart. | |
3064 | */ | |
3065 | probe_block = 0; | |
3066 | page_no = 0; | |
3067 | last_block = i_size_read(inode) >> blkbits; | |
3068 | while ((probe_block + blocks_per_page) <= last_block && page_no < max) { | |
3069 | unsigned block_in_page; | |
3070 | sector_t first_block; | |
3071 | ||
3072 | cond_resched(); | |
3073 | ||
3074 | first_block = bmap(inode, probe_block); | |
3075 | if (first_block == 0) | |
3076 | goto bad_bmap; | |
3077 | ||
3078 | /* | |
3079 | * It must be PAGE_SIZE aligned on-disk | |
3080 | */ | |
3081 | if (first_block & (blocks_per_page - 1)) { | |
3082 | probe_block++; | |
3083 | goto reprobe; | |
3084 | } | |
3085 | ||
3086 | for (block_in_page = 1; block_in_page < blocks_per_page; | |
3087 | block_in_page++) { | |
3088 | sector_t block; | |
3089 | ||
3090 | block = bmap(inode, probe_block + block_in_page); | |
3091 | if (block == 0) | |
3092 | goto bad_bmap; | |
3093 | if (block != first_block + block_in_page) { | |
3094 | /* Discontiguity */ | |
3095 | probe_block++; | |
3096 | goto reprobe; | |
3097 | } | |
3098 | } | |
3099 | ||
3100 | first_block >>= (PAGE_SHIFT - blkbits); | |
3101 | if (page_no) { /* exclude the header page */ | |
3102 | if (first_block < lowest_block) | |
3103 | lowest_block = first_block; | |
3104 | if (first_block > highest_block) | |
3105 | highest_block = first_block; | |
3106 | } | |
3107 | ||
3108 | page_no++; | |
3109 | probe_block += blocks_per_page; | |
3110 | reprobe: | |
3111 | continue; | |
3112 | } | |
3113 | return 0; | |
3114 | ||
3115 | bad_bmap: | |
3116 | pr_err("swapon: swapfile has holes\n"); | |
3117 | return -EINVAL; | |
3118 | } | |
3119 | ||
3120 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3121 | sector_t *span) | |
3122 | { | |
3123 | struct inode *inode = file_inode(file); | |
3124 | int ret; | |
3125 | ||
3126 | if (!S_ISREG(inode->i_mode)) | |
3127 | return -EINVAL; | |
3128 | ||
3129 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3130 | return -EROFS; | |
3131 | ||
3132 | ret = f2fs_convert_inline_inode(inode); | |
3133 | if (ret) | |
3134 | return ret; | |
3135 | ||
3136 | ret = check_swap_activate(file, sis->max); | |
3137 | if (ret) | |
3138 | return ret; | |
3139 | ||
3140 | set_inode_flag(inode, FI_PIN_FILE); | |
3141 | f2fs_precache_extents(inode); | |
3142 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
3143 | return 0; | |
3144 | } | |
3145 | ||
3146 | static void f2fs_swap_deactivate(struct file *file) | |
3147 | { | |
3148 | struct inode *inode = file_inode(file); | |
3149 | ||
3150 | clear_inode_flag(inode, FI_PIN_FILE); | |
3151 | } | |
3152 | #else | |
3153 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3154 | sector_t *span) | |
3155 | { | |
3156 | return -EOPNOTSUPP; | |
3157 | } | |
3158 | ||
3159 | static void f2fs_swap_deactivate(struct file *file) | |
3160 | { | |
3161 | } | |
3162 | #endif | |
3163 | ||
eb47b800 JK |
3164 | const struct address_space_operations f2fs_dblock_aops = { |
3165 | .readpage = f2fs_read_data_page, | |
3166 | .readpages = f2fs_read_data_pages, | |
3167 | .writepage = f2fs_write_data_page, | |
3168 | .writepages = f2fs_write_data_pages, | |
3169 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 3170 | .write_end = f2fs_write_end, |
eb47b800 | 3171 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
3172 | .invalidatepage = f2fs_invalidate_page, |
3173 | .releasepage = f2fs_release_page, | |
eb47b800 | 3174 | .direct_IO = f2fs_direct_IO, |
c01e54b7 | 3175 | .bmap = f2fs_bmap, |
4969c06a JK |
3176 | .swap_activate = f2fs_swap_activate, |
3177 | .swap_deactivate = f2fs_swap_deactivate, | |
5b7a487c WG |
3178 | #ifdef CONFIG_MIGRATION |
3179 | .migratepage = f2fs_migrate_page, | |
3180 | #endif | |
eb47b800 | 3181 | }; |
6dbb1796 | 3182 | |
5ec2d99d | 3183 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
3184 | { |
3185 | struct address_space *mapping = page_mapping(page); | |
3186 | unsigned long flags; | |
3187 | ||
3188 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 3189 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
3190 | PAGECACHE_TAG_DIRTY); |
3191 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
3192 | } | |
3193 | ||
6dbb1796 EB |
3194 | int __init f2fs_init_post_read_processing(void) |
3195 | { | |
95ae251f EB |
3196 | bio_post_read_ctx_cache = |
3197 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
3198 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
3199 | if (!bio_post_read_ctx_cache) |
3200 | goto fail; | |
3201 | bio_post_read_ctx_pool = | |
3202 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
3203 | bio_post_read_ctx_cache); | |
3204 | if (!bio_post_read_ctx_pool) | |
3205 | goto fail_free_cache; | |
3206 | return 0; | |
3207 | ||
3208 | fail_free_cache: | |
3209 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3210 | fail: | |
3211 | return -ENOMEM; | |
3212 | } | |
3213 | ||
3214 | void __exit f2fs_destroy_post_read_processing(void) | |
3215 | { | |
3216 | mempool_destroy(bio_post_read_ctx_pool); | |
3217 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3218 | } |