Commit | Line | Data |
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7c1a000d | 1 | // SPDX-License-Identifier: GPL-2.0 |
0a8165d7 | 2 | /* |
eb47b800 JK |
3 | * fs/f2fs/data.c |
4 | * | |
5 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
6 | * http://www.samsung.com/ | |
eb47b800 JK |
7 | */ |
8 | #include <linux/fs.h> | |
9 | #include <linux/f2fs_fs.h> | |
10 | #include <linux/buffer_head.h> | |
11 | #include <linux/mpage.h> | |
12 | #include <linux/writeback.h> | |
13 | #include <linux/backing-dev.h> | |
8f46dcae | 14 | #include <linux/pagevec.h> |
eb47b800 JK |
15 | #include <linux/blkdev.h> |
16 | #include <linux/bio.h> | |
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; | |
0b20fcec | 32 | static struct kmem_cache *bio_entry_slab; |
6dbb1796 | 33 | static mempool_t *bio_post_read_ctx_pool; |
f543805f CY |
34 | static struct bio_set f2fs_bioset; |
35 | ||
36 | #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE | |
37 | ||
38 | int __init f2fs_init_bioset(void) | |
39 | { | |
40 | if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, | |
41 | 0, BIOSET_NEED_BVECS)) | |
42 | return -ENOMEM; | |
43 | return 0; | |
44 | } | |
45 | ||
46 | void f2fs_destroy_bioset(void) | |
47 | { | |
48 | bioset_exit(&f2fs_bioset); | |
49 | } | |
50 | ||
51 | static inline struct bio *__f2fs_bio_alloc(gfp_t gfp_mask, | |
52 | unsigned int nr_iovecs) | |
53 | { | |
54 | return bio_alloc_bioset(gfp_mask, nr_iovecs, &f2fs_bioset); | |
55 | } | |
56 | ||
57 | struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool no_fail) | |
58 | { | |
59 | struct bio *bio; | |
60 | ||
61 | if (no_fail) { | |
62 | /* No failure on bio allocation */ | |
63 | bio = __f2fs_bio_alloc(GFP_NOIO, npages); | |
64 | if (!bio) | |
65 | bio = __f2fs_bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); | |
66 | return bio; | |
67 | } | |
68 | if (time_to_inject(sbi, FAULT_ALLOC_BIO)) { | |
69 | f2fs_show_injection_info(sbi, FAULT_ALLOC_BIO); | |
70 | return NULL; | |
71 | } | |
72 | ||
73 | return __f2fs_bio_alloc(GFP_KERNEL, npages); | |
74 | } | |
6dbb1796 | 75 | |
36951b38 CY |
76 | static bool __is_cp_guaranteed(struct page *page) |
77 | { | |
78 | struct address_space *mapping = page->mapping; | |
79 | struct inode *inode; | |
80 | struct f2fs_sb_info *sbi; | |
81 | ||
82 | if (!mapping) | |
83 | return false; | |
84 | ||
4c8ff709 CY |
85 | if (f2fs_is_compressed_page(page)) |
86 | return false; | |
87 | ||
36951b38 CY |
88 | inode = mapping->host; |
89 | sbi = F2FS_I_SB(inode); | |
90 | ||
91 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
92 | inode->i_ino == F2FS_NODE_INO(sbi) || | |
93 | S_ISDIR(inode->i_mode) || | |
e7a4feb0 | 94 | (S_ISREG(inode->i_mode) && |
af033b2a | 95 | (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) || |
36951b38 CY |
96 | is_cold_data(page)) |
97 | return true; | |
98 | return false; | |
99 | } | |
100 | ||
5f9abab4 JK |
101 | static enum count_type __read_io_type(struct page *page) |
102 | { | |
4969c06a | 103 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
104 | |
105 | if (mapping) { | |
106 | struct inode *inode = mapping->host; | |
107 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
108 | ||
109 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
110 | return F2FS_RD_META; | |
111 | ||
112 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
113 | return F2FS_RD_NODE; | |
114 | } | |
115 | return F2FS_RD_DATA; | |
116 | } | |
117 | ||
6dbb1796 EB |
118 | /* postprocessing steps for read bios */ |
119 | enum bio_post_read_step { | |
6dbb1796 | 120 | STEP_DECRYPT, |
4c8ff709 | 121 | STEP_DECOMPRESS, |
95ae251f | 122 | STEP_VERITY, |
6dbb1796 EB |
123 | }; |
124 | ||
125 | struct bio_post_read_ctx { | |
126 | struct bio *bio; | |
4c8ff709 | 127 | struct f2fs_sb_info *sbi; |
6dbb1796 | 128 | struct work_struct work; |
6dbb1796 EB |
129 | unsigned int enabled_steps; |
130 | }; | |
131 | ||
4c8ff709 | 132 | static void __read_end_io(struct bio *bio, bool compr, bool verity) |
93dfe2ac | 133 | { |
6dbb1796 EB |
134 | struct page *page; |
135 | struct bio_vec *bv; | |
6dc4f100 | 136 | struct bvec_iter_all iter_all; |
93dfe2ac | 137 | |
2b070cfe | 138 | bio_for_each_segment_all(bv, bio, iter_all) { |
6dbb1796 EB |
139 | page = bv->bv_page; |
140 | ||
4c8ff709 CY |
141 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
142 | if (compr && f2fs_is_compressed_page(page)) { | |
143 | f2fs_decompress_pages(bio, page, verity); | |
144 | continue; | |
145 | } | |
146 | #endif | |
147 | ||
6dbb1796 EB |
148 | /* PG_error was set if any post_read step failed */ |
149 | if (bio->bi_status || PageError(page)) { | |
150 | ClearPageUptodate(page); | |
fb7d70db JK |
151 | /* will re-read again later */ |
152 | ClearPageError(page); | |
6dbb1796 EB |
153 | } else { |
154 | SetPageUptodate(page); | |
155 | } | |
5f9abab4 | 156 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
157 | unlock_page(page); |
158 | } | |
4c8ff709 CY |
159 | } |
160 | ||
161 | static void f2fs_release_read_bio(struct bio *bio); | |
162 | static void __f2fs_read_end_io(struct bio *bio, bool compr, bool verity) | |
163 | { | |
164 | if (!compr) | |
165 | __read_end_io(bio, false, verity); | |
166 | f2fs_release_read_bio(bio); | |
167 | } | |
168 | ||
169 | static void f2fs_decompress_bio(struct bio *bio, bool verity) | |
170 | { | |
171 | __read_end_io(bio, true, verity); | |
6dbb1796 EB |
172 | } |
173 | ||
174 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx); | |
175 | ||
4c8ff709 CY |
176 | static void f2fs_decrypt_work(struct bio_post_read_ctx *ctx) |
177 | { | |
178 | fscrypt_decrypt_bio(ctx->bio); | |
179 | } | |
180 | ||
181 | static void f2fs_decompress_work(struct bio_post_read_ctx *ctx) | |
182 | { | |
183 | f2fs_decompress_bio(ctx->bio, ctx->enabled_steps & (1 << STEP_VERITY)); | |
184 | } | |
185 | ||
186 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
187 | static void f2fs_verify_pages(struct page **rpages, unsigned int cluster_size) | |
188 | { | |
189 | f2fs_decompress_end_io(rpages, cluster_size, false, true); | |
190 | } | |
191 | ||
192 | static void f2fs_verify_bio(struct bio *bio) | |
193 | { | |
194 | struct page *page = bio_first_page_all(bio); | |
195 | struct decompress_io_ctx *dic = | |
196 | (struct decompress_io_ctx *)page_private(page); | |
197 | ||
198 | f2fs_verify_pages(dic->rpages, dic->cluster_size); | |
199 | f2fs_free_dic(dic); | |
200 | } | |
201 | #endif | |
202 | ||
203 | static void f2fs_verity_work(struct work_struct *work) | |
6dbb1796 EB |
204 | { |
205 | struct bio_post_read_ctx *ctx = | |
206 | container_of(work, struct bio_post_read_ctx, work); | |
644c8c92 EB |
207 | struct bio *bio = ctx->bio; |
208 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
209 | unsigned int enabled_steps = ctx->enabled_steps; | |
210 | #endif | |
211 | ||
212 | /* | |
213 | * fsverity_verify_bio() may call readpages() again, and while verity | |
214 | * will be disabled for this, decryption may still be needed, resulting | |
215 | * in another bio_post_read_ctx being allocated. So to prevent | |
216 | * deadlocks we need to release the current ctx to the mempool first. | |
217 | * This assumes that verity is the last post-read step. | |
218 | */ | |
219 | mempool_free(ctx, bio_post_read_ctx_pool); | |
220 | bio->bi_private = NULL; | |
6dbb1796 | 221 | |
4c8ff709 CY |
222 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
223 | /* previous step is decompression */ | |
644c8c92 EB |
224 | if (enabled_steps & (1 << STEP_DECOMPRESS)) { |
225 | f2fs_verify_bio(bio); | |
226 | f2fs_release_read_bio(bio); | |
4c8ff709 CY |
227 | return; |
228 | } | |
229 | #endif | |
6dbb1796 | 230 | |
644c8c92 EB |
231 | fsverity_verify_bio(bio); |
232 | __f2fs_read_end_io(bio, false, false); | |
6dbb1796 EB |
233 | } |
234 | ||
4c8ff709 | 235 | static void f2fs_post_read_work(struct work_struct *work) |
95ae251f EB |
236 | { |
237 | struct bio_post_read_ctx *ctx = | |
238 | container_of(work, struct bio_post_read_ctx, work); | |
239 | ||
4c8ff709 CY |
240 | if (ctx->enabled_steps & (1 << STEP_DECRYPT)) |
241 | f2fs_decrypt_work(ctx); | |
242 | ||
243 | if (ctx->enabled_steps & (1 << STEP_DECOMPRESS)) | |
244 | f2fs_decompress_work(ctx); | |
245 | ||
246 | if (ctx->enabled_steps & (1 << STEP_VERITY)) { | |
247 | INIT_WORK(&ctx->work, f2fs_verity_work); | |
248 | fsverity_enqueue_verify_work(&ctx->work); | |
249 | return; | |
250 | } | |
251 | ||
252 | __f2fs_read_end_io(ctx->bio, | |
253 | ctx->enabled_steps & (1 << STEP_DECOMPRESS), false); | |
254 | } | |
95ae251f | 255 | |
4c8ff709 CY |
256 | static void f2fs_enqueue_post_read_work(struct f2fs_sb_info *sbi, |
257 | struct work_struct *work) | |
258 | { | |
259 | queue_work(sbi->post_read_wq, work); | |
95ae251f EB |
260 | } |
261 | ||
6dbb1796 EB |
262 | static void bio_post_read_processing(struct bio_post_read_ctx *ctx) |
263 | { | |
95ae251f EB |
264 | /* |
265 | * We use different work queues for decryption and for verity because | |
266 | * verity may require reading metadata pages that need decryption, and | |
267 | * we shouldn't recurse to the same workqueue. | |
268 | */ | |
4c8ff709 CY |
269 | |
270 | if (ctx->enabled_steps & (1 << STEP_DECRYPT) || | |
271 | ctx->enabled_steps & (1 << STEP_DECOMPRESS)) { | |
272 | INIT_WORK(&ctx->work, f2fs_post_read_work); | |
273 | f2fs_enqueue_post_read_work(ctx->sbi, &ctx->work); | |
274 | return; | |
275 | } | |
276 | ||
277 | if (ctx->enabled_steps & (1 << STEP_VERITY)) { | |
278 | INIT_WORK(&ctx->work, f2fs_verity_work); | |
279 | fsverity_enqueue_verify_work(&ctx->work); | |
280 | return; | |
6dbb1796 | 281 | } |
4c8ff709 CY |
282 | |
283 | __f2fs_read_end_io(ctx->bio, false, false); | |
6dbb1796 EB |
284 | } |
285 | ||
286 | static bool f2fs_bio_post_read_required(struct bio *bio) | |
287 | { | |
4c8ff709 | 288 | return bio->bi_private; |
6dbb1796 EB |
289 | } |
290 | ||
291 | static void f2fs_read_end_io(struct bio *bio) | |
292 | { | |
c45d6002 CY |
293 | struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); |
294 | ||
295 | if (time_to_inject(sbi, FAULT_READ_IO)) { | |
296 | f2fs_show_injection_info(sbi, FAULT_READ_IO); | |
4e4cbee9 | 297 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 298 | } |
8b038c70 | 299 | |
6dbb1796 EB |
300 | if (f2fs_bio_post_read_required(bio)) { |
301 | struct bio_post_read_ctx *ctx = bio->bi_private; | |
f1e88660 | 302 | |
6dbb1796 EB |
303 | bio_post_read_processing(ctx); |
304 | return; | |
f1e88660 | 305 | } |
6dbb1796 | 306 | |
4c8ff709 | 307 | __f2fs_read_end_io(bio, false, false); |
f1e88660 JK |
308 | } |
309 | ||
4246a0b6 | 310 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 311 | { |
1b1f559f | 312 | struct f2fs_sb_info *sbi = bio->bi_private; |
f568849e | 313 | struct bio_vec *bvec; |
6dc4f100 | 314 | struct bvec_iter_all iter_all; |
93dfe2ac | 315 | |
6f5c2ed0 | 316 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
c45d6002 | 317 | f2fs_show_injection_info(sbi, FAULT_WRITE_IO); |
6f5c2ed0 CY |
318 | bio->bi_status = BLK_STS_IOERR; |
319 | } | |
320 | ||
2b070cfe | 321 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 322 | struct page *page = bvec->bv_page; |
36951b38 | 323 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 324 | |
0a595eba JK |
325 | if (IS_DUMMY_WRITTEN_PAGE(page)) { |
326 | set_page_private(page, (unsigned long)NULL); | |
327 | ClearPagePrivate(page); | |
328 | unlock_page(page); | |
329 | mempool_free(page, sbi->write_io_dummy); | |
330 | ||
4e4cbee9 | 331 | if (unlikely(bio->bi_status)) |
0a595eba JK |
332 | f2fs_stop_checkpoint(sbi, true); |
333 | continue; | |
334 | } | |
335 | ||
d2d0727b | 336 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 337 | |
4c8ff709 CY |
338 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
339 | if (f2fs_is_compressed_page(page)) { | |
340 | f2fs_compress_write_end_io(bio, page); | |
341 | continue; | |
342 | } | |
343 | #endif | |
344 | ||
4e4cbee9 | 345 | if (unlikely(bio->bi_status)) { |
5114a97a | 346 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
347 | if (type == F2FS_WB_CP_DATA) |
348 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 349 | } |
7dff55d2 YH |
350 | |
351 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
352 | page->index != nid_of_node(page)); | |
353 | ||
36951b38 | 354 | dec_page_count(sbi, type); |
50fa53ec CY |
355 | if (f2fs_in_warm_node_list(sbi, page)) |
356 | f2fs_del_fsync_node_entry(sbi, page); | |
36951b38 | 357 | clear_cold_data(page); |
93dfe2ac | 358 | end_page_writeback(page); |
f568849e | 359 | } |
36951b38 | 360 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 361 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
362 | wake_up(&sbi->cp_wait); |
363 | ||
364 | bio_put(bio); | |
365 | } | |
366 | ||
3c62be17 JK |
367 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
368 | block_t blk_addr, struct bio *bio) | |
369 | { | |
370 | struct block_device *bdev = sbi->sb->s_bdev; | |
371 | int i; | |
372 | ||
0916878d DLM |
373 | if (f2fs_is_multi_device(sbi)) { |
374 | for (i = 0; i < sbi->s_ndevs; i++) { | |
375 | if (FDEV(i).start_blk <= blk_addr && | |
376 | FDEV(i).end_blk >= blk_addr) { | |
377 | blk_addr -= FDEV(i).start_blk; | |
378 | bdev = FDEV(i).bdev; | |
379 | break; | |
380 | } | |
3c62be17 JK |
381 | } |
382 | } | |
383 | if (bio) { | |
74d46992 | 384 | bio_set_dev(bio, bdev); |
3c62be17 JK |
385 | bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); |
386 | } | |
387 | return bdev; | |
388 | } | |
389 | ||
390 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
391 | { | |
392 | int i; | |
393 | ||
0916878d DLM |
394 | if (!f2fs_is_multi_device(sbi)) |
395 | return 0; | |
396 | ||
3c62be17 JK |
397 | for (i = 0; i < sbi->s_ndevs; i++) |
398 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
399 | return i; | |
400 | return 0; | |
401 | } | |
402 | ||
7a88ddb5 CY |
403 | /* |
404 | * Return true, if pre_bio's bdev is same as its target device. | |
405 | */ | |
3c62be17 JK |
406 | static bool __same_bdev(struct f2fs_sb_info *sbi, |
407 | block_t blk_addr, struct bio *bio) | |
408 | { | |
74d46992 CH |
409 | struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); |
410 | return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; | |
3c62be17 JK |
411 | } |
412 | ||
b757f6ed | 413 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 414 | { |
b757f6ed | 415 | struct f2fs_sb_info *sbi = fio->sbi; |
940a6d34 GZ |
416 | struct bio *bio; |
417 | ||
d62fe971 | 418 | bio = f2fs_bio_alloc(sbi, npages, true); |
940a6d34 | 419 | |
b757f6ed CY |
420 | f2fs_target_device(sbi, fio->new_blkaddr, bio); |
421 | if (is_read_io(fio->op)) { | |
0cdd3195 HL |
422 | bio->bi_end_io = f2fs_read_end_io; |
423 | bio->bi_private = NULL; | |
424 | } else { | |
425 | bio->bi_end_io = f2fs_write_end_io; | |
426 | bio->bi_private = sbi; | |
b757f6ed CY |
427 | bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi, |
428 | fio->type, fio->temp); | |
0cdd3195 | 429 | } |
b757f6ed CY |
430 | if (fio->io_wbc) |
431 | wbc_init_bio(fio->io_wbc, bio); | |
940a6d34 GZ |
432 | |
433 | return bio; | |
434 | } | |
435 | ||
4fc29c1a LT |
436 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
437 | struct bio *bio, enum page_type type) | |
f5730184 | 438 | { |
4fc29c1a | 439 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
440 | unsigned int start; |
441 | ||
0a595eba JK |
442 | if (type != DATA && type != NODE) |
443 | goto submit_io; | |
444 | ||
b0332a0f | 445 | if (f2fs_lfs_mode(sbi) && current->plug) |
3bb09a0e TY |
446 | blk_finish_plug(current->plug); |
447 | ||
8223ecc4 CY |
448 | if (F2FS_IO_ALIGNED(sbi)) |
449 | goto submit_io; | |
450 | ||
0a595eba JK |
451 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
452 | start %= F2FS_IO_SIZE(sbi); | |
453 | ||
454 | if (start == 0) | |
455 | goto submit_io; | |
456 | ||
457 | /* fill dummy pages */ | |
458 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
459 | struct page *page = | |
460 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 461 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
462 | f2fs_bug_on(sbi, !page); |
463 | ||
bc73a4b2 | 464 | zero_user_segment(page, 0, PAGE_SIZE); |
0a595eba JK |
465 | SetPagePrivate(page); |
466 | set_page_private(page, (unsigned long)DUMMY_WRITTEN_PAGE); | |
467 | lock_page(page); | |
468 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) | |
469 | f2fs_bug_on(sbi, 1); | |
470 | } | |
471 | /* | |
472 | * In the NODE case, we lose next block address chain. So, we | |
473 | * need to do checkpoint in f2fs_sync_file. | |
474 | */ | |
475 | if (type == NODE) | |
476 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 477 | } |
0a595eba | 478 | submit_io: |
554b5125 JK |
479 | if (is_read_io(bio_op(bio))) |
480 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
481 | else | |
482 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
4e49ea4a | 483 | submit_bio(bio); |
f5730184 JK |
484 | } |
485 | ||
4c8ff709 CY |
486 | void f2fs_submit_bio(struct f2fs_sb_info *sbi, |
487 | struct bio *bio, enum page_type type) | |
488 | { | |
489 | __submit_bio(sbi, bio, type); | |
490 | } | |
491 | ||
458e6197 | 492 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 493 | { |
458e6197 | 494 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
495 | |
496 | if (!io->bio) | |
497 | return; | |
498 | ||
554b5125 JK |
499 | bio_set_op_attrs(io->bio, fio->op, fio->op_flags); |
500 | ||
04d328de | 501 | if (is_read_io(fio->op)) |
554b5125 | 502 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 503 | else |
554b5125 | 504 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 505 | |
4fc29c1a | 506 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
507 | io->bio = NULL; |
508 | } | |
509 | ||
8648de2c | 510 | static bool __has_merged_page(struct bio *bio, struct inode *inode, |
bab475c5 | 511 | struct page *page, nid_t ino) |
0fd785eb | 512 | { |
0fd785eb | 513 | struct bio_vec *bvec; |
6dc4f100 | 514 | struct bvec_iter_all iter_all; |
0fd785eb | 515 | |
8648de2c | 516 | if (!bio) |
0fd785eb | 517 | return false; |
0c3a5797 | 518 | |
bab475c5 | 519 | if (!inode && !page && !ino) |
0c3a5797 | 520 | return true; |
0fd785eb | 521 | |
8648de2c | 522 | bio_for_each_segment_all(bvec, bio, iter_all) { |
4c8ff709 | 523 | struct page *target = bvec->bv_page; |
0fd785eb | 524 | |
4c8ff709 | 525 | if (fscrypt_is_bounce_page(target)) { |
d2d0727b | 526 | target = fscrypt_pagecache_page(target); |
4c8ff709 CY |
527 | if (IS_ERR(target)) |
528 | continue; | |
529 | } | |
530 | if (f2fs_is_compressed_page(target)) { | |
531 | target = f2fs_compress_control_page(target); | |
532 | if (IS_ERR(target)) | |
533 | continue; | |
534 | } | |
0fd785eb | 535 | |
0c3a5797 CY |
536 | if (inode && inode == target->mapping->host) |
537 | return true; | |
bab475c5 CY |
538 | if (page && page == target) |
539 | return true; | |
0c3a5797 | 540 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 541 | return true; |
0fd785eb CY |
542 | } |
543 | ||
0fd785eb CY |
544 | return false; |
545 | } | |
546 | ||
b9109b0e | 547 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 548 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
549 | { |
550 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 551 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 552 | |
df0f8dc0 | 553 | down_write(&io->io_rwsem); |
458e6197 JK |
554 | |
555 | /* change META to META_FLUSH in the checkpoint procedure */ | |
556 | if (type >= META_FLUSH) { | |
557 | io->fio.type = META_FLUSH; | |
04d328de | 558 | io->fio.op = REQ_OP_WRITE; |
3adc5fcb | 559 | io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 560 | if (!test_opt(sbi, NOBARRIER)) |
7f54f51f | 561 | io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
562 | } |
563 | __submit_merged_bio(io); | |
df0f8dc0 | 564 | up_write(&io->io_rwsem); |
93dfe2ac JK |
565 | } |
566 | ||
a912b54d | 567 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
568 | struct inode *inode, struct page *page, |
569 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 570 | { |
a912b54d | 571 | enum temp_type temp; |
1e771e83 | 572 | bool ret = true; |
a912b54d JK |
573 | |
574 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
575 | if (!force) { |
576 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
577 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 578 | |
1e771e83 | 579 | down_read(&io->io_rwsem); |
8648de2c | 580 | ret = __has_merged_page(io->bio, inode, page, ino); |
1e771e83 YS |
581 | up_read(&io->io_rwsem); |
582 | } | |
583 | if (ret) | |
584 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
585 | |
586 | /* TODO: use HOT temp only for meta pages now. */ | |
587 | if (type >= META) | |
588 | break; | |
589 | } | |
0c3a5797 CY |
590 | } |
591 | ||
b9109b0e | 592 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 593 | { |
adcc00f7 | 594 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
595 | } |
596 | ||
b9109b0e | 597 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
598 | struct inode *inode, struct page *page, |
599 | nid_t ino, enum page_type type) | |
0c3a5797 | 600 | { |
bab475c5 | 601 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
602 | } |
603 | ||
b9109b0e | 604 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 605 | { |
b9109b0e JK |
606 | f2fs_submit_merged_write(sbi, DATA); |
607 | f2fs_submit_merged_write(sbi, NODE); | |
608 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
609 | } |
610 | ||
93dfe2ac JK |
611 | /* |
612 | * Fill the locked page with data located in the block address. | |
771a9a71 | 613 | * A caller needs to unlock the page on failure. |
93dfe2ac | 614 | */ |
05ca3632 | 615 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 616 | { |
93dfe2ac | 617 | struct bio *bio; |
0b81d077 JK |
618 | struct page *page = fio->encrypted_page ? |
619 | fio->encrypted_page : fio->page; | |
93dfe2ac | 620 | |
c9b60788 | 621 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
93770ab7 CY |
622 | fio->is_por ? META_POR : (__is_meta_io(fio) ? |
623 | META_GENERIC : DATA_GENERIC_ENHANCE))) | |
10f966bb | 624 | return -EFSCORRUPTED; |
c9b60788 | 625 | |
2ace38e0 | 626 | trace_f2fs_submit_page_bio(page, fio); |
05ca3632 | 627 | f2fs_trace_ios(fio, 0); |
93dfe2ac JK |
628 | |
629 | /* Allocate a new bio */ | |
b757f6ed | 630 | bio = __bio_alloc(fio, 1); |
93dfe2ac | 631 | |
09cbfeaf | 632 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 633 | bio_put(bio); |
93dfe2ac JK |
634 | return -EFAULT; |
635 | } | |
78efac53 CY |
636 | |
637 | if (fio->io_wbc && !is_read_io(fio->op)) | |
34e51a5e | 638 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
78efac53 | 639 | |
04d328de | 640 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
93dfe2ac | 641 | |
5f9abab4 JK |
642 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
643 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
644 | |
645 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
646 | return 0; |
647 | } | |
648 | ||
8896cbdf CY |
649 | static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, |
650 | block_t last_blkaddr, block_t cur_blkaddr) | |
651 | { | |
652 | if (last_blkaddr + 1 != cur_blkaddr) | |
653 | return false; | |
654 | return __same_bdev(sbi, cur_blkaddr, bio); | |
655 | } | |
656 | ||
657 | static bool io_type_is_mergeable(struct f2fs_bio_info *io, | |
658 | struct f2fs_io_info *fio) | |
659 | { | |
660 | if (io->fio.op != fio->op) | |
661 | return false; | |
662 | return io->fio.op_flags == fio->op_flags; | |
663 | } | |
664 | ||
665 | static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, | |
666 | struct f2fs_bio_info *io, | |
667 | struct f2fs_io_info *fio, | |
668 | block_t last_blkaddr, | |
669 | block_t cur_blkaddr) | |
670 | { | |
c72db71e CY |
671 | if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { |
672 | unsigned int filled_blocks = | |
673 | F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); | |
674 | unsigned int io_size = F2FS_IO_SIZE(sbi); | |
675 | unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; | |
676 | ||
677 | /* IOs in bio is aligned and left space of vectors is not enough */ | |
678 | if (!(filled_blocks % io_size) && left_vecs < io_size) | |
679 | return false; | |
680 | } | |
8896cbdf CY |
681 | if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) |
682 | return false; | |
683 | return io_type_is_mergeable(io, fio); | |
684 | } | |
685 | ||
0b20fcec CY |
686 | static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, |
687 | struct page *page, enum temp_type temp) | |
688 | { | |
689 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
690 | struct bio_entry *be; | |
691 | ||
692 | be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS); | |
693 | be->bio = bio; | |
694 | bio_get(bio); | |
695 | ||
696 | if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE) | |
697 | f2fs_bug_on(sbi, 1); | |
698 | ||
699 | down_write(&io->bio_list_lock); | |
700 | list_add_tail(&be->list, &io->bio_list); | |
701 | up_write(&io->bio_list_lock); | |
702 | } | |
703 | ||
704 | static void del_bio_entry(struct bio_entry *be) | |
705 | { | |
706 | list_del(&be->list); | |
707 | kmem_cache_free(bio_entry_slab, be); | |
708 | } | |
709 | ||
710 | static int add_ipu_page(struct f2fs_sb_info *sbi, struct bio **bio, | |
711 | struct page *page) | |
712 | { | |
713 | enum temp_type temp; | |
714 | bool found = false; | |
715 | int ret = -EAGAIN; | |
716 | ||
717 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
718 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
719 | struct list_head *head = &io->bio_list; | |
720 | struct bio_entry *be; | |
721 | ||
722 | down_write(&io->bio_list_lock); | |
723 | list_for_each_entry(be, head, list) { | |
724 | if (be->bio != *bio) | |
725 | continue; | |
726 | ||
727 | found = true; | |
728 | ||
4c8ff709 CY |
729 | if (bio_add_page(*bio, page, PAGE_SIZE, 0) == |
730 | PAGE_SIZE) { | |
0b20fcec CY |
731 | ret = 0; |
732 | break; | |
733 | } | |
734 | ||
735 | /* bio is full */ | |
736 | del_bio_entry(be); | |
737 | __submit_bio(sbi, *bio, DATA); | |
738 | break; | |
739 | } | |
740 | up_write(&io->bio_list_lock); | |
741 | } | |
742 | ||
743 | if (ret) { | |
744 | bio_put(*bio); | |
745 | *bio = NULL; | |
746 | } | |
747 | ||
748 | return ret; | |
749 | } | |
750 | ||
751 | void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, | |
752 | struct bio **bio, struct page *page) | |
753 | { | |
754 | enum temp_type temp; | |
755 | bool found = false; | |
756 | struct bio *target = bio ? *bio : NULL; | |
757 | ||
758 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
759 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
760 | struct list_head *head = &io->bio_list; | |
761 | struct bio_entry *be; | |
762 | ||
763 | if (list_empty(head)) | |
764 | continue; | |
765 | ||
766 | down_read(&io->bio_list_lock); | |
767 | list_for_each_entry(be, head, list) { | |
768 | if (target) | |
769 | found = (target == be->bio); | |
770 | else | |
771 | found = __has_merged_page(be->bio, NULL, | |
772 | page, 0); | |
773 | if (found) | |
774 | break; | |
775 | } | |
776 | up_read(&io->bio_list_lock); | |
777 | ||
778 | if (!found) | |
779 | continue; | |
780 | ||
781 | found = false; | |
782 | ||
783 | down_write(&io->bio_list_lock); | |
784 | list_for_each_entry(be, head, list) { | |
785 | if (target) | |
786 | found = (target == be->bio); | |
787 | else | |
788 | found = __has_merged_page(be->bio, NULL, | |
789 | page, 0); | |
790 | if (found) { | |
791 | target = be->bio; | |
792 | del_bio_entry(be); | |
793 | break; | |
794 | } | |
795 | } | |
796 | up_write(&io->bio_list_lock); | |
797 | } | |
798 | ||
799 | if (found) | |
800 | __submit_bio(sbi, target, DATA); | |
801 | if (bio && *bio) { | |
802 | bio_put(*bio); | |
803 | *bio = NULL; | |
804 | } | |
805 | } | |
806 | ||
8648de2c CY |
807 | int f2fs_merge_page_bio(struct f2fs_io_info *fio) |
808 | { | |
809 | struct bio *bio = *fio->bio; | |
810 | struct page *page = fio->encrypted_page ? | |
811 | fio->encrypted_page : fio->page; | |
812 | ||
813 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, | |
814 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
10f966bb | 815 | return -EFSCORRUPTED; |
8648de2c CY |
816 | |
817 | trace_f2fs_submit_page_bio(page, fio); | |
818 | f2fs_trace_ios(fio, 0); | |
819 | ||
8896cbdf | 820 | if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, |
0b20fcec CY |
821 | fio->new_blkaddr)) |
822 | f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL); | |
8648de2c CY |
823 | alloc_new: |
824 | if (!bio) { | |
b757f6ed | 825 | bio = __bio_alloc(fio, BIO_MAX_PAGES); |
8648de2c | 826 | bio_set_op_attrs(bio, fio->op, fio->op_flags); |
8648de2c | 827 | |
0b20fcec CY |
828 | add_bio_entry(fio->sbi, bio, page, fio->temp); |
829 | } else { | |
830 | if (add_ipu_page(fio->sbi, &bio, page)) | |
831 | goto alloc_new; | |
8648de2c CY |
832 | } |
833 | ||
834 | if (fio->io_wbc) | |
9637d517 | 835 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
8648de2c CY |
836 | |
837 | inc_page_count(fio->sbi, WB_DATA_TYPE(page)); | |
838 | ||
839 | *fio->last_block = fio->new_blkaddr; | |
840 | *fio->bio = bio; | |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
fe16efe6 | 845 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 846 | { |
05ca3632 | 847 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 848 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 849 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 850 | struct page *bio_page; |
93dfe2ac | 851 | |
b9109b0e | 852 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 853 | |
fb830fc5 CY |
854 | down_write(&io->io_rwsem); |
855 | next: | |
856 | if (fio->in_list) { | |
857 | spin_lock(&io->io_lock); | |
858 | if (list_empty(&io->io_list)) { | |
859 | spin_unlock(&io->io_lock); | |
fe16efe6 | 860 | goto out; |
fb830fc5 CY |
861 | } |
862 | fio = list_first_entry(&io->io_list, | |
863 | struct f2fs_io_info, list); | |
864 | list_del(&fio->list); | |
865 | spin_unlock(&io->io_lock); | |
866 | } | |
93dfe2ac | 867 | |
93770ab7 | 868 | verify_fio_blkaddr(fio); |
93dfe2ac | 869 | |
4c8ff709 CY |
870 | if (fio->encrypted_page) |
871 | bio_page = fio->encrypted_page; | |
872 | else if (fio->compressed_page) | |
873 | bio_page = fio->compressed_page; | |
874 | else | |
875 | bio_page = fio->page; | |
36951b38 | 876 | |
ebf7c522 TM |
877 | /* set submitted = true as a return value */ |
878 | fio->submitted = true; | |
d68f735b | 879 | |
b9109b0e | 880 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 881 | |
8896cbdf CY |
882 | if (io->bio && !io_is_mergeable(sbi, io->bio, io, fio, |
883 | io->last_block_in_bio, fio->new_blkaddr)) | |
458e6197 | 884 | __submit_merged_bio(io); |
93dfe2ac JK |
885 | alloc_new: |
886 | if (io->bio == NULL) { | |
8223ecc4 CY |
887 | if (F2FS_IO_ALIGNED(sbi) && |
888 | (fio->type == DATA || fio->type == NODE) && | |
0a595eba | 889 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { |
b9109b0e | 890 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
891 | fio->retry = true; |
892 | goto skip; | |
0a595eba | 893 | } |
b757f6ed | 894 | io->bio = __bio_alloc(fio, BIO_MAX_PAGES); |
458e6197 | 895 | io->fio = *fio; |
93dfe2ac JK |
896 | } |
897 | ||
a912b54d | 898 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 899 | __submit_merged_bio(io); |
93dfe2ac JK |
900 | goto alloc_new; |
901 | } | |
902 | ||
578c6478 | 903 | if (fio->io_wbc) |
34e51a5e | 904 | wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); |
578c6478 | 905 | |
7a9d7548 | 906 | io->last_block_in_bio = fio->new_blkaddr; |
05ca3632 | 907 | f2fs_trace_ios(fio, 0); |
fb830fc5 CY |
908 | |
909 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 910 | skip: |
fb830fc5 CY |
911 | if (fio->in_list) |
912 | goto next; | |
fe16efe6 | 913 | out: |
4354994f | 914 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
00e09c0b | 915 | !f2fs_is_checkpoint_ready(sbi)) |
5ce80586 | 916 | __submit_merged_bio(io); |
df0f8dc0 | 917 | up_write(&io->io_rwsem); |
93dfe2ac JK |
918 | } |
919 | ||
95ae251f EB |
920 | static inline bool f2fs_need_verity(const struct inode *inode, pgoff_t idx) |
921 | { | |
922 | return fsverity_active(inode) && | |
923 | idx < DIV_ROUND_UP(inode->i_size, PAGE_SIZE); | |
924 | } | |
925 | ||
13ba41e3 | 926 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
95ae251f EB |
927 | unsigned nr_pages, unsigned op_flag, |
928 | pgoff_t first_idx) | |
13ba41e3 JK |
929 | { |
930 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 931 | struct bio *bio; |
6dbb1796 EB |
932 | struct bio_post_read_ctx *ctx; |
933 | unsigned int post_read_steps = 0; | |
13ba41e3 | 934 | |
d62fe971 | 935 | bio = f2fs_bio_alloc(sbi, min_t(int, nr_pages, BIO_MAX_PAGES), false); |
6dbb1796 | 936 | if (!bio) |
13ba41e3 | 937 | return ERR_PTR(-ENOMEM); |
13ba41e3 JK |
938 | f2fs_target_device(sbi, blkaddr, bio); |
939 | bio->bi_end_io = f2fs_read_end_io; | |
e2e59414 | 940 | bio_set_op_attrs(bio, REQ_OP_READ, op_flag); |
13ba41e3 | 941 | |
6dbb1796 EB |
942 | if (f2fs_encrypted_file(inode)) |
943 | post_read_steps |= 1 << STEP_DECRYPT; | |
4c8ff709 CY |
944 | if (f2fs_compressed_file(inode)) |
945 | post_read_steps |= 1 << STEP_DECOMPRESS; | |
95ae251f EB |
946 | if (f2fs_need_verity(inode, first_idx)) |
947 | post_read_steps |= 1 << STEP_VERITY; | |
948 | ||
6dbb1796 | 949 | if (post_read_steps) { |
e8ce5749 | 950 | /* Due to the mempool, this never fails. */ |
6dbb1796 | 951 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); |
6dbb1796 | 952 | ctx->bio = bio; |
4c8ff709 | 953 | ctx->sbi = sbi; |
6dbb1796 EB |
954 | ctx->enabled_steps = post_read_steps; |
955 | bio->bi_private = ctx; | |
6dbb1796 EB |
956 | } |
957 | ||
13ba41e3 JK |
958 | return bio; |
959 | } | |
960 | ||
4c8ff709 CY |
961 | static void f2fs_release_read_bio(struct bio *bio) |
962 | { | |
963 | if (bio->bi_private) | |
964 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
965 | bio_put(bio); | |
966 | } | |
967 | ||
13ba41e3 JK |
968 | /* This can handle encryption stuffs */ |
969 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
970 | block_t blkaddr) | |
971 | { | |
93770ab7 CY |
972 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
973 | struct bio *bio; | |
13ba41e3 | 974 | |
95ae251f | 975 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, 0, page->index); |
13ba41e3 JK |
976 | if (IS_ERR(bio)) |
977 | return PTR_ERR(bio); | |
978 | ||
0ded69f6 JK |
979 | /* wait for GCed page writeback via META_MAPPING */ |
980 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
981 | ||
13ba41e3 JK |
982 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
983 | bio_put(bio); | |
984 | return -EFAULT; | |
985 | } | |
fb7d70db | 986 | ClearPageError(page); |
93770ab7 CY |
987 | inc_page_count(sbi, F2FS_RD_DATA); |
988 | __submit_bio(sbi, bio, DATA); | |
13ba41e3 JK |
989 | return 0; |
990 | } | |
991 | ||
46008c6d CY |
992 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
993 | { | |
994 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
995 | __le32 *addr_array; | |
7a2af766 CY |
996 | int base = 0; |
997 | ||
998 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
999 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
1000 | |
1001 | /* Get physical address of data block */ | |
1002 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 1003 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
1004 | } |
1005 | ||
0a8165d7 | 1006 | /* |
eb47b800 JK |
1007 | * Lock ordering for the change of data block address: |
1008 | * ->data_page | |
1009 | * ->node_page | |
1010 | * update block addresses in the node page | |
1011 | */ | |
4d57b86d | 1012 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 1013 | { |
bae0ee7a | 1014 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1015 | __set_data_blkaddr(dn); |
1016 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 1017 | dn->node_changed = true; |
eb47b800 JK |
1018 | } |
1019 | ||
f28b3434 CY |
1020 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
1021 | { | |
1022 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 1023 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
1024 | f2fs_update_extent_cache(dn); |
1025 | } | |
1026 | ||
46008c6d | 1027 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 1028 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 1029 | { |
4081363f | 1030 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 1031 | int err; |
eb47b800 | 1032 | |
46008c6d CY |
1033 | if (!count) |
1034 | return 0; | |
1035 | ||
91942321 | 1036 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 1037 | return -EPERM; |
0abd675e CY |
1038 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1039 | return err; | |
eb47b800 | 1040 | |
46008c6d CY |
1041 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
1042 | dn->ofs_in_node, count); | |
1043 | ||
bae0ee7a | 1044 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1045 | |
1046 | for (; count > 0; dn->ofs_in_node++) { | |
a2ced1ce | 1047 | block_t blkaddr = f2fs_data_blkaddr(dn); |
46008c6d CY |
1048 | if (blkaddr == NULL_ADDR) { |
1049 | dn->data_blkaddr = NEW_ADDR; | |
1050 | __set_data_blkaddr(dn); | |
1051 | count--; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | if (set_page_dirty(dn->node_page)) | |
1056 | dn->node_changed = true; | |
eb47b800 JK |
1057 | return 0; |
1058 | } | |
1059 | ||
46008c6d | 1060 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 1061 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
1062 | { |
1063 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1064 | int ret; | |
1065 | ||
4d57b86d | 1066 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
1067 | dn->ofs_in_node = ofs_in_node; |
1068 | return ret; | |
1069 | } | |
1070 | ||
b600965c HL |
1071 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
1072 | { | |
1073 | bool need_put = dn->inode_page ? false : true; | |
1074 | int err; | |
1075 | ||
4d57b86d | 1076 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
1077 | if (err) |
1078 | return err; | |
a8865372 | 1079 | |
b600965c | 1080 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 1081 | err = f2fs_reserve_new_block(dn); |
a8865372 | 1082 | if (err || need_put) |
b600965c HL |
1083 | f2fs_put_dnode(dn); |
1084 | return err; | |
1085 | } | |
1086 | ||
759af1c9 | 1087 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 1088 | { |
e15882b6 | 1089 | struct extent_info ei = {0,0,0}; |
759af1c9 | 1090 | struct inode *inode = dn->inode; |
028a41e8 | 1091 | |
759af1c9 FL |
1092 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1093 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
1094 | return 0; | |
429511cd | 1095 | } |
028a41e8 | 1096 | |
759af1c9 | 1097 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
1098 | } |
1099 | ||
4d57b86d | 1100 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
04d328de | 1101 | int op_flags, bool for_write) |
eb47b800 | 1102 | { |
eb47b800 JK |
1103 | struct address_space *mapping = inode->i_mapping; |
1104 | struct dnode_of_data dn; | |
1105 | struct page *page; | |
e15882b6 | 1106 | struct extent_info ei = {0,0,0}; |
eb47b800 | 1107 | int err; |
4375a336 | 1108 | |
a56c7c6f | 1109 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
1110 | if (!page) |
1111 | return ERR_PTR(-ENOMEM); | |
1112 | ||
cb3bc9ee CY |
1113 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1114 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
93770ab7 CY |
1115 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
1116 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 1117 | err = -EFSCORRUPTED; |
93770ab7 CY |
1118 | goto put_err; |
1119 | } | |
cb3bc9ee CY |
1120 | goto got_it; |
1121 | } | |
1122 | ||
eb47b800 | 1123 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1124 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
1125 | if (err) |
1126 | goto put_err; | |
eb47b800 JK |
1127 | f2fs_put_dnode(&dn); |
1128 | ||
6bacf52f | 1129 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
1130 | err = -ENOENT; |
1131 | goto put_err; | |
650495de | 1132 | } |
93770ab7 CY |
1133 | if (dn.data_blkaddr != NEW_ADDR && |
1134 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
1135 | dn.data_blkaddr, | |
1136 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 1137 | err = -EFSCORRUPTED; |
93770ab7 CY |
1138 | goto put_err; |
1139 | } | |
cb3bc9ee | 1140 | got_it: |
43f3eae1 JK |
1141 | if (PageUptodate(page)) { |
1142 | unlock_page(page); | |
eb47b800 | 1143 | return page; |
43f3eae1 | 1144 | } |
eb47b800 | 1145 | |
d59ff4df JK |
1146 | /* |
1147 | * A new dentry page is allocated but not able to be written, since its | |
1148 | * new inode page couldn't be allocated due to -ENOSPC. | |
1149 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
1150 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
1151 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
1152 | */ |
1153 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1154 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1155 | if (!PageUptodate(page)) |
1156 | SetPageUptodate(page); | |
43f3eae1 | 1157 | unlock_page(page); |
d59ff4df JK |
1158 | return page; |
1159 | } | |
eb47b800 | 1160 | |
13ba41e3 | 1161 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr); |
393ff91f | 1162 | if (err) |
86531d6b | 1163 | goto put_err; |
43f3eae1 | 1164 | return page; |
86531d6b JK |
1165 | |
1166 | put_err: | |
1167 | f2fs_put_page(page, 1); | |
1168 | return ERR_PTR(err); | |
43f3eae1 JK |
1169 | } |
1170 | ||
4d57b86d | 1171 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
1172 | { |
1173 | struct address_space *mapping = inode->i_mapping; | |
1174 | struct page *page; | |
1175 | ||
1176 | page = find_get_page(mapping, index); | |
1177 | if (page && PageUptodate(page)) | |
1178 | return page; | |
1179 | f2fs_put_page(page, 0); | |
1180 | ||
4d57b86d | 1181 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
1182 | if (IS_ERR(page)) |
1183 | return page; | |
1184 | ||
1185 | if (PageUptodate(page)) | |
1186 | return page; | |
1187 | ||
1188 | wait_on_page_locked(page); | |
1189 | if (unlikely(!PageUptodate(page))) { | |
1190 | f2fs_put_page(page, 0); | |
1191 | return ERR_PTR(-EIO); | |
1192 | } | |
1193 | return page; | |
1194 | } | |
1195 | ||
1196 | /* | |
1197 | * If it tries to access a hole, return an error. | |
1198 | * Because, the callers, functions in dir.c and GC, should be able to know | |
1199 | * whether this page exists or not. | |
1200 | */ | |
4d57b86d | 1201 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 1202 | bool for_write) |
43f3eae1 JK |
1203 | { |
1204 | struct address_space *mapping = inode->i_mapping; | |
1205 | struct page *page; | |
1206 | repeat: | |
4d57b86d | 1207 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
1208 | if (IS_ERR(page)) |
1209 | return page; | |
393ff91f | 1210 | |
43f3eae1 | 1211 | /* wait for read completion */ |
393ff91f | 1212 | lock_page(page); |
6bacf52f | 1213 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
1214 | f2fs_put_page(page, 1); |
1215 | goto repeat; | |
eb47b800 | 1216 | } |
1563ac75 CY |
1217 | if (unlikely(!PageUptodate(page))) { |
1218 | f2fs_put_page(page, 1); | |
1219 | return ERR_PTR(-EIO); | |
1220 | } | |
eb47b800 JK |
1221 | return page; |
1222 | } | |
1223 | ||
0a8165d7 | 1224 | /* |
eb47b800 JK |
1225 | * Caller ensures that this data page is never allocated. |
1226 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 1227 | * |
4f4124d0 CY |
1228 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
1229 | * f2fs_unlock_op(). | |
470f00e9 CY |
1230 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
1231 | * ipage should be released by this function. | |
eb47b800 | 1232 | */ |
4d57b86d | 1233 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 1234 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 1235 | { |
eb47b800 JK |
1236 | struct address_space *mapping = inode->i_mapping; |
1237 | struct page *page; | |
1238 | struct dnode_of_data dn; | |
1239 | int err; | |
7612118a | 1240 | |
a56c7c6f | 1241 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
1242 | if (!page) { |
1243 | /* | |
1244 | * before exiting, we should make sure ipage will be released | |
1245 | * if any error occur. | |
1246 | */ | |
1247 | f2fs_put_page(ipage, 1); | |
01f28610 | 1248 | return ERR_PTR(-ENOMEM); |
470f00e9 | 1249 | } |
eb47b800 | 1250 | |
a8865372 | 1251 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 1252 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
1253 | if (err) { |
1254 | f2fs_put_page(page, 1); | |
eb47b800 | 1255 | return ERR_PTR(err); |
a8865372 | 1256 | } |
01f28610 JK |
1257 | if (!ipage) |
1258 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1259 | |
1260 | if (PageUptodate(page)) | |
01f28610 | 1261 | goto got_it; |
eb47b800 JK |
1262 | |
1263 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1264 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1265 | if (!PageUptodate(page)) |
1266 | SetPageUptodate(page); | |
eb47b800 | 1267 | } else { |
4375a336 | 1268 | f2fs_put_page(page, 1); |
a8865372 | 1269 | |
7612118a JK |
1270 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1271 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1272 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1273 | if (IS_ERR(page)) |
7612118a | 1274 | return page; |
eb47b800 | 1275 | } |
01f28610 | 1276 | got_it: |
9edcdabf | 1277 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1278 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1279 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1280 | return page; |
1281 | } | |
1282 | ||
d5097be5 | 1283 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1284 | { |
4081363f | 1285 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1286 | struct f2fs_summary sum; |
bfad7c2d | 1287 | struct node_info ni; |
6aa58d8a | 1288 | block_t old_blkaddr; |
46008c6d | 1289 | blkcnt_t count = 1; |
0abd675e | 1290 | int err; |
bfad7c2d | 1291 | |
91942321 | 1292 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1293 | return -EPERM; |
df6136ef | 1294 | |
7735730d CY |
1295 | err = f2fs_get_node_info(sbi, dn->nid, &ni); |
1296 | if (err) | |
1297 | return err; | |
1298 | ||
a2ced1ce | 1299 | dn->data_blkaddr = f2fs_data_blkaddr(dn); |
f847c699 | 1300 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1301 | goto alloc; |
1302 | ||
0abd675e CY |
1303 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1304 | return err; | |
bfad7c2d | 1305 | |
df6136ef | 1306 | alloc: |
bfad7c2d | 1307 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1308 | old_blkaddr = dn->data_blkaddr; |
1309 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
d5097be5 | 1310 | &sum, seg_type, NULL, false); |
6aa58d8a CY |
1311 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) |
1312 | invalidate_mapping_pages(META_MAPPING(sbi), | |
1313 | old_blkaddr, old_blkaddr); | |
86f35dc3 | 1314 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d | 1315 | |
0a4daae5 JK |
1316 | /* |
1317 | * i_size will be updated by direct_IO. Otherwise, we'll get stale | |
1318 | * data from unwritten block via dio_read. | |
1319 | */ | |
bfad7c2d JK |
1320 | return 0; |
1321 | } | |
1322 | ||
a7de6086 | 1323 | int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from) |
59b802e5 | 1324 | { |
b439b103 | 1325 | struct inode *inode = file_inode(iocb->ki_filp); |
5b8db7fa | 1326 | struct f2fs_map_blocks map; |
d6d478a1 | 1327 | int flag; |
a7de6086 | 1328 | int err = 0; |
d6d478a1 | 1329 | bool direct_io = iocb->ki_flags & IOCB_DIRECT; |
59b802e5 | 1330 | |
0080c507 | 1331 | map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos); |
dfd02e4d CY |
1332 | map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from)); |
1333 | if (map.m_len > map.m_lblk) | |
1334 | map.m_len -= map.m_lblk; | |
1335 | else | |
1336 | map.m_len = 0; | |
1337 | ||
da85985c | 1338 | map.m_next_pgofs = NULL; |
c4020b2d | 1339 | map.m_next_extent = NULL; |
d5097be5 | 1340 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 1341 | map.m_may_create = true; |
2a340760 | 1342 | |
d6d478a1 | 1343 | if (direct_io) { |
4d57b86d | 1344 | map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint); |
f847c699 | 1345 | flag = f2fs_force_buffered_io(inode, iocb, from) ? |
d6d478a1 CY |
1346 | F2FS_GET_BLOCK_PRE_AIO : |
1347 | F2FS_GET_BLOCK_PRE_DIO; | |
1348 | goto map_blocks; | |
d5097be5 | 1349 | } |
f2470371 | 1350 | if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) { |
a7de6086 JK |
1351 | err = f2fs_convert_inline_inode(inode); |
1352 | if (err) | |
1353 | return err; | |
b439b103 | 1354 | } |
d6d478a1 | 1355 | if (f2fs_has_inline_data(inode)) |
25006645 | 1356 | return err; |
d6d478a1 CY |
1357 | |
1358 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
1359 | ||
1360 | map_blocks: | |
1361 | err = f2fs_map_blocks(inode, &map, 1, flag); | |
1362 | if (map.m_len > 0 && err == -ENOSPC) { | |
1363 | if (!direct_io) | |
1364 | set_inode_flag(inode, FI_NO_PREALLOC); | |
1365 | err = 0; | |
25006645 | 1366 | } |
a7de6086 | 1367 | return err; |
59b802e5 JK |
1368 | } |
1369 | ||
39a86958 | 1370 | void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1371 | { |
1372 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1373 | if (lock) | |
1374 | down_read(&sbi->node_change); | |
1375 | else | |
1376 | up_read(&sbi->node_change); | |
1377 | } else { | |
1378 | if (lock) | |
1379 | f2fs_lock_op(sbi); | |
1380 | else | |
1381 | f2fs_unlock_op(sbi); | |
1382 | } | |
1383 | } | |
1384 | ||
0a8165d7 | 1385 | /* |
7a88ddb5 CY |
1386 | * f2fs_map_blocks() tries to find or build mapping relationship which |
1387 | * maps continuous logical blocks to physical blocks, and return such | |
1388 | * info via f2fs_map_blocks structure. | |
eb47b800 | 1389 | */ |
d323d005 | 1390 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1391 | int create, int flag) |
eb47b800 | 1392 | { |
003a3e1d | 1393 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1394 | struct dnode_of_data dn; |
f9811703 | 1395 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1396 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1397 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1398 | int err = 0, ofs = 1; |
46008c6d CY |
1399 | unsigned int ofs_in_node, last_ofs_in_node; |
1400 | blkcnt_t prealloc; | |
e15882b6 | 1401 | struct extent_info ei = {0,0,0}; |
7df3a431 | 1402 | block_t blkaddr; |
c4020b2d | 1403 | unsigned int start_pgofs; |
eb47b800 | 1404 | |
dfd02e4d CY |
1405 | if (!maxblocks) |
1406 | return 0; | |
1407 | ||
003a3e1d JK |
1408 | map->m_len = 0; |
1409 | map->m_flags = 0; | |
1410 | ||
1411 | /* it only supports block size == page size */ | |
1412 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1413 | end = pgofs + maxblocks; |
eb47b800 | 1414 | |
24b84912 | 1415 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
b0332a0f | 1416 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f4f0b677 JZ |
1417 | map->m_may_create) |
1418 | goto next_dnode; | |
1419 | ||
003a3e1d JK |
1420 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1421 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1422 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1423 | if (map->m_next_extent) |
1424 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1425 | |
1426 | /* for hardware encryption, but to avoid potential issue in future */ | |
1427 | if (flag == F2FS_GET_BLOCK_DIO) | |
1428 | f2fs_wait_on_block_writeback_range(inode, | |
1429 | map->m_pblk, map->m_len); | |
bfad7c2d | 1430 | goto out; |
a2e7d1bf | 1431 | } |
bfad7c2d | 1432 | |
4fe71e88 | 1433 | next_dnode: |
f9d6d059 | 1434 | if (map->m_may_create) |
59c9081b | 1435 | __do_map_lock(sbi, flag, true); |
eb47b800 JK |
1436 | |
1437 | /* When reading holes, we need its node page */ | |
1438 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1439 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1440 | if (err) { |
43473f96 CY |
1441 | if (flag == F2FS_GET_BLOCK_BMAP) |
1442 | map->m_pblk = 0; | |
da85985c | 1443 | if (err == -ENOENT) { |
bfad7c2d | 1444 | err = 0; |
da85985c CY |
1445 | if (map->m_next_pgofs) |
1446 | *map->m_next_pgofs = | |
4d57b86d | 1447 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1448 | if (map->m_next_extent) |
1449 | *map->m_next_extent = | |
4d57b86d | 1450 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1451 | } |
bfad7c2d | 1452 | goto unlock_out; |
848753aa | 1453 | } |
973163fc | 1454 | |
c4020b2d | 1455 | start_pgofs = pgofs; |
46008c6d | 1456 | prealloc = 0; |
230436b3 | 1457 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1458 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1459 | |
1460 | next_block: | |
a2ced1ce | 1461 | blkaddr = f2fs_data_blkaddr(&dn); |
4fe71e88 | 1462 | |
c9b60788 | 1463 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1464 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1465 | err = -EFSCORRUPTED; |
c9b60788 CY |
1466 | goto sync_out; |
1467 | } | |
1468 | ||
93770ab7 | 1469 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1470 | /* use out-place-update for driect IO under LFS mode */ |
b0332a0f | 1471 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f9d6d059 | 1472 | map->m_may_create) { |
f847c699 | 1473 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1474 | if (err) |
1475 | goto sync_out; | |
1476 | blkaddr = dn.data_blkaddr; | |
1477 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1478 | } |
1479 | } else { | |
973163fc | 1480 | if (create) { |
f9811703 CY |
1481 | if (unlikely(f2fs_cp_error(sbi))) { |
1482 | err = -EIO; | |
4fe71e88 | 1483 | goto sync_out; |
f9811703 | 1484 | } |
24b84912 | 1485 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1486 | if (blkaddr == NULL_ADDR) { |
1487 | prealloc++; | |
1488 | last_ofs_in_node = dn.ofs_in_node; | |
1489 | } | |
24b84912 | 1490 | } else { |
0a4daae5 JK |
1491 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1492 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1493 | err = __allocate_data_block(&dn, |
1494 | map->m_seg_type); | |
6f2d8ed6 | 1495 | if (!err) |
91942321 | 1496 | set_inode_flag(inode, FI_APPEND_WRITE); |
24b84912 | 1497 | } |
973163fc | 1498 | if (err) |
4fe71e88 | 1499 | goto sync_out; |
3f2be043 | 1500 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1501 | blkaddr = dn.data_blkaddr; |
973163fc | 1502 | } else { |
43473f96 CY |
1503 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1504 | map->m_pblk = 0; | |
1505 | goto sync_out; | |
1506 | } | |
c4020b2d CY |
1507 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1508 | goto sync_out; | |
da85985c CY |
1509 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1510 | blkaddr == NULL_ADDR) { | |
1511 | if (map->m_next_pgofs) | |
1512 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1513 | goto sync_out; |
da85985c | 1514 | } |
f3d98e74 CY |
1515 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1516 | /* for defragment case */ | |
1517 | if (map->m_next_pgofs) | |
1518 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1519 | goto sync_out; |
f3d98e74 | 1520 | } |
e2b4e2bc | 1521 | } |
e2b4e2bc | 1522 | } |
eb47b800 | 1523 | |
46008c6d CY |
1524 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1525 | goto skip; | |
1526 | ||
4fe71e88 CY |
1527 | if (map->m_len == 0) { |
1528 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1529 | if (blkaddr == NEW_ADDR) | |
1530 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1531 | map->m_flags |= F2FS_MAP_MAPPED; | |
1532 | ||
1533 | map->m_pblk = blkaddr; | |
1534 | map->m_len = 1; | |
1535 | } else if ((map->m_pblk != NEW_ADDR && | |
1536 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1537 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1538 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
4fe71e88 CY |
1539 | ofs++; |
1540 | map->m_len++; | |
1541 | } else { | |
1542 | goto sync_out; | |
1543 | } | |
bfad7c2d | 1544 | |
46008c6d | 1545 | skip: |
bfad7c2d JK |
1546 | dn.ofs_in_node++; |
1547 | pgofs++; | |
1548 | ||
46008c6d CY |
1549 | /* preallocate blocks in batch for one dnode page */ |
1550 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1551 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1552 | |
46008c6d | 1553 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1554 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1555 | if (err) |
1556 | goto sync_out; | |
bfad7c2d | 1557 | |
46008c6d CY |
1558 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1559 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1560 | err = -ENOSPC; | |
1561 | goto sync_out; | |
3104af35 | 1562 | } |
46008c6d CY |
1563 | dn.ofs_in_node = end_offset; |
1564 | } | |
1565 | ||
1566 | if (pgofs >= end) | |
1567 | goto sync_out; | |
1568 | else if (dn.ofs_in_node < end_offset) | |
1569 | goto next_block; | |
1570 | ||
c4020b2d CY |
1571 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1572 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1573 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1574 | ||
1575 | f2fs_update_extent_cache_range(&dn, | |
1576 | start_pgofs, map->m_pblk + ofs, | |
1577 | map->m_len - ofs); | |
1578 | } | |
1579 | } | |
1580 | ||
46008c6d CY |
1581 | f2fs_put_dnode(&dn); |
1582 | ||
f9d6d059 | 1583 | if (map->m_may_create) { |
59c9081b | 1584 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1585 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1586 | } |
46008c6d | 1587 | goto next_dnode; |
7df3a431 | 1588 | |
bfad7c2d | 1589 | sync_out: |
1e78e8bd ST |
1590 | |
1591 | /* for hardware encryption, but to avoid potential issue in future */ | |
1592 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) | |
1593 | f2fs_wait_on_block_writeback_range(inode, | |
1594 | map->m_pblk, map->m_len); | |
1595 | ||
c4020b2d CY |
1596 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1597 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1598 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1599 | ||
1600 | f2fs_update_extent_cache_range(&dn, | |
1601 | start_pgofs, map->m_pblk + ofs, | |
1602 | map->m_len - ofs); | |
1603 | } | |
1604 | if (map->m_next_extent) | |
1605 | *map->m_next_extent = pgofs + 1; | |
1606 | } | |
eb47b800 | 1607 | f2fs_put_dnode(&dn); |
bfad7c2d | 1608 | unlock_out: |
f9d6d059 | 1609 | if (map->m_may_create) { |
59c9081b | 1610 | __do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1611 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1612 | } |
bfad7c2d | 1613 | out: |
003a3e1d | 1614 | trace_f2fs_map_blocks(inode, map, err); |
bfad7c2d | 1615 | return err; |
eb47b800 JK |
1616 | } |
1617 | ||
b91050a8 HL |
1618 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1619 | { | |
1620 | struct f2fs_map_blocks map; | |
1621 | block_t last_lblk; | |
1622 | int err; | |
1623 | ||
1624 | if (pos + len > i_size_read(inode)) | |
1625 | return false; | |
1626 | ||
1627 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1628 | map.m_next_pgofs = NULL; | |
1629 | map.m_next_extent = NULL; | |
1630 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1631 | map.m_may_create = false; |
b91050a8 HL |
1632 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1633 | ||
1634 | while (map.m_lblk < last_lblk) { | |
1635 | map.m_len = last_lblk - map.m_lblk; | |
1636 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1637 | if (err || map.m_len == 0) | |
1638 | return false; | |
1639 | map.m_lblk += map.m_len; | |
1640 | } | |
1641 | return true; | |
1642 | } | |
1643 | ||
003a3e1d | 1644 | static int __get_data_block(struct inode *inode, sector_t iblock, |
da85985c | 1645 | struct buffer_head *bh, int create, int flag, |
f9d6d059 | 1646 | pgoff_t *next_pgofs, int seg_type, bool may_write) |
003a3e1d JK |
1647 | { |
1648 | struct f2fs_map_blocks map; | |
a7de6086 | 1649 | int err; |
003a3e1d JK |
1650 | |
1651 | map.m_lblk = iblock; | |
1652 | map.m_len = bh->b_size >> inode->i_blkbits; | |
da85985c | 1653 | map.m_next_pgofs = next_pgofs; |
c4020b2d | 1654 | map.m_next_extent = NULL; |
d5097be5 | 1655 | map.m_seg_type = seg_type; |
f9d6d059 | 1656 | map.m_may_create = may_write; |
003a3e1d | 1657 | |
a7de6086 JK |
1658 | err = f2fs_map_blocks(inode, &map, create, flag); |
1659 | if (!err) { | |
003a3e1d JK |
1660 | map_bh(bh, inode->i_sb, map.m_pblk); |
1661 | bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags; | |
b86e3307 | 1662 | bh->b_size = (u64)map.m_len << inode->i_blkbits; |
003a3e1d | 1663 | } |
a7de6086 | 1664 | return err; |
003a3e1d JK |
1665 | } |
1666 | ||
ccfb3000 | 1667 | static int get_data_block(struct inode *inode, sector_t iblock, |
da85985c CY |
1668 | struct buffer_head *bh_result, int create, int flag, |
1669 | pgoff_t *next_pgofs) | |
e2b4e2bc | 1670 | { |
da85985c | 1671 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1672 | flag, next_pgofs, |
f9d6d059 CY |
1673 | NO_CHECK_TYPE, create); |
1674 | } | |
1675 | ||
1676 | static int get_data_block_dio_write(struct inode *inode, sector_t iblock, | |
1677 | struct buffer_head *bh_result, int create) | |
1678 | { | |
1679 | return __get_data_block(inode, iblock, bh_result, create, | |
1680 | F2FS_GET_BLOCK_DIO, NULL, | |
1681 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
75a037f3 | 1682 | IS_SWAPFILE(inode) ? false : true); |
e2b4e2bc CY |
1683 | } |
1684 | ||
1685 | static int get_data_block_dio(struct inode *inode, sector_t iblock, | |
ccfb3000 JK |
1686 | struct buffer_head *bh_result, int create) |
1687 | { | |
e2b4e2bc | 1688 | return __get_data_block(inode, iblock, bh_result, create, |
f9d6d059 CY |
1689 | F2FS_GET_BLOCK_DIO, NULL, |
1690 | f2fs_rw_hint_to_seg_type(inode->i_write_hint), | |
1691 | false); | |
ccfb3000 JK |
1692 | } |
1693 | ||
e2b4e2bc | 1694 | static int get_data_block_bmap(struct inode *inode, sector_t iblock, |
ccfb3000 JK |
1695 | struct buffer_head *bh_result, int create) |
1696 | { | |
179448bf | 1697 | /* Block number less than F2FS MAX BLOCKS */ |
e0afc4d6 | 1698 | if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks)) |
179448bf YH |
1699 | return -EFBIG; |
1700 | ||
e2b4e2bc | 1701 | return __get_data_block(inode, iblock, bh_result, create, |
d5097be5 | 1702 | F2FS_GET_BLOCK_BMAP, NULL, |
f9d6d059 | 1703 | NO_CHECK_TYPE, create); |
ccfb3000 JK |
1704 | } |
1705 | ||
7f63eb77 JK |
1706 | static inline sector_t logical_to_blk(struct inode *inode, loff_t offset) |
1707 | { | |
1708 | return (offset >> inode->i_blkbits); | |
1709 | } | |
1710 | ||
1711 | static inline loff_t blk_to_logical(struct inode *inode, sector_t blk) | |
1712 | { | |
1713 | return (blk << inode->i_blkbits); | |
1714 | } | |
1715 | ||
442a9dbd CY |
1716 | static int f2fs_xattr_fiemap(struct inode *inode, |
1717 | struct fiemap_extent_info *fieinfo) | |
1718 | { | |
1719 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1720 | struct page *page; | |
1721 | struct node_info ni; | |
1722 | __u64 phys = 0, len; | |
1723 | __u32 flags; | |
1724 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1725 | int err = 0; | |
1726 | ||
1727 | if (f2fs_has_inline_xattr(inode)) { | |
1728 | int offset; | |
1729 | ||
1730 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1731 | inode->i_ino, false); | |
1732 | if (!page) | |
1733 | return -ENOMEM; | |
1734 | ||
7735730d CY |
1735 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni); |
1736 | if (err) { | |
1737 | f2fs_put_page(page, 1); | |
1738 | return err; | |
1739 | } | |
442a9dbd CY |
1740 | |
1741 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1742 | offset = offsetof(struct f2fs_inode, i_addr) + | |
1743 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1744 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1745 | |
1746 | phys += offset; | |
1747 | len = inline_xattr_size(inode); | |
1748 | ||
1749 | f2fs_put_page(page, 1); | |
1750 | ||
1751 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1752 | ||
1753 | if (!xnid) | |
1754 | flags |= FIEMAP_EXTENT_LAST; | |
1755 | ||
1756 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1757 | if (err || err == 1) | |
1758 | return err; | |
1759 | } | |
1760 | ||
1761 | if (xnid) { | |
1762 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1763 | if (!page) | |
1764 | return -ENOMEM; | |
1765 | ||
7735730d CY |
1766 | err = f2fs_get_node_info(sbi, xnid, &ni); |
1767 | if (err) { | |
1768 | f2fs_put_page(page, 1); | |
1769 | return err; | |
1770 | } | |
442a9dbd CY |
1771 | |
1772 | phys = (__u64)blk_to_logical(inode, ni.blk_addr); | |
1773 | len = inode->i_sb->s_blocksize; | |
1774 | ||
1775 | f2fs_put_page(page, 1); | |
1776 | ||
1777 | flags = FIEMAP_EXTENT_LAST; | |
1778 | } | |
1779 | ||
1780 | if (phys) | |
1781 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
1782 | ||
1783 | return (err < 0 ? err : 0); | |
1784 | } | |
1785 | ||
9ab70134 JK |
1786 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1787 | u64 start, u64 len) | |
1788 | { | |
7f63eb77 JK |
1789 | struct buffer_head map_bh; |
1790 | sector_t start_blk, last_blk; | |
da85985c | 1791 | pgoff_t next_pgofs; |
7f63eb77 JK |
1792 | u64 logical = 0, phys = 0, size = 0; |
1793 | u32 flags = 0; | |
7f63eb77 JK |
1794 | int ret = 0; |
1795 | ||
c4020b2d CY |
1796 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1797 | ret = f2fs_precache_extents(inode); | |
1798 | if (ret) | |
1799 | return ret; | |
1800 | } | |
1801 | ||
442a9dbd | 1802 | ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1803 | if (ret) |
1804 | return ret; | |
1805 | ||
f1b43d4c CY |
1806 | inode_lock(inode); |
1807 | ||
442a9dbd CY |
1808 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1809 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1810 | goto out; | |
1811 | } | |
1812 | ||
7975f349 | 1813 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1814 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1815 | if (ret != -EAGAIN) | |
f1b43d4c | 1816 | goto out; |
67f8cf3c JK |
1817 | } |
1818 | ||
7f63eb77 JK |
1819 | if (logical_to_blk(inode, len) == 0) |
1820 | len = blk_to_logical(inode, 1); | |
1821 | ||
1822 | start_blk = logical_to_blk(inode, start); | |
1823 | last_blk = logical_to_blk(inode, start + len - 1); | |
9a950d52 | 1824 | |
7f63eb77 JK |
1825 | next: |
1826 | memset(&map_bh, 0, sizeof(struct buffer_head)); | |
1827 | map_bh.b_size = len; | |
1828 | ||
e2b4e2bc | 1829 | ret = get_data_block(inode, start_blk, &map_bh, 0, |
da85985c | 1830 | F2FS_GET_BLOCK_FIEMAP, &next_pgofs); |
7f63eb77 JK |
1831 | if (ret) |
1832 | goto out; | |
1833 | ||
1834 | /* HOLE */ | |
1835 | if (!buffer_mapped(&map_bh)) { | |
da85985c | 1836 | start_blk = next_pgofs; |
58736fa6 CY |
1837 | |
1838 | if (blk_to_logical(inode, start_blk) < blk_to_logical(inode, | |
1839 | F2FS_I_SB(inode)->max_file_blocks)) | |
9a950d52 | 1840 | goto prep_next; |
58736fa6 | 1841 | |
9a950d52 FL |
1842 | flags |= FIEMAP_EXTENT_LAST; |
1843 | } | |
7f63eb77 | 1844 | |
da5af127 | 1845 | if (size) { |
62230e0d | 1846 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1847 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1848 | ||
9a950d52 FL |
1849 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1850 | phys, size, flags); | |
da5af127 | 1851 | } |
7f63eb77 | 1852 | |
9a950d52 FL |
1853 | if (start_blk > last_blk || ret) |
1854 | goto out; | |
7f63eb77 | 1855 | |
9a950d52 FL |
1856 | logical = blk_to_logical(inode, start_blk); |
1857 | phys = blk_to_logical(inode, map_bh.b_blocknr); | |
1858 | size = map_bh.b_size; | |
1859 | flags = 0; | |
1860 | if (buffer_unwritten(&map_bh)) | |
1861 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
7f63eb77 | 1862 | |
9a950d52 | 1863 | start_blk += logical_to_blk(inode, size); |
7f63eb77 | 1864 | |
9a950d52 | 1865 | prep_next: |
7f63eb77 JK |
1866 | cond_resched(); |
1867 | if (fatal_signal_pending(current)) | |
1868 | ret = -EINTR; | |
1869 | else | |
1870 | goto next; | |
1871 | out: | |
1872 | if (ret == 1) | |
1873 | ret = 0; | |
1874 | ||
5955102c | 1875 | inode_unlock(inode); |
7f63eb77 | 1876 | return ret; |
9ab70134 JK |
1877 | } |
1878 | ||
95ae251f EB |
1879 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
1880 | { | |
1881 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
1882 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
1883 | return inode->i_sb->s_maxbytes; | |
1884 | ||
1885 | return i_size_read(inode); | |
1886 | } | |
1887 | ||
2df0ab04 CY |
1888 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
1889 | unsigned nr_pages, | |
1890 | struct f2fs_map_blocks *map, | |
1891 | struct bio **bio_ret, | |
1892 | sector_t *last_block_in_bio, | |
1893 | bool is_readahead) | |
1894 | { | |
1895 | struct bio *bio = *bio_ret; | |
1896 | const unsigned blkbits = inode->i_blkbits; | |
1897 | const unsigned blocksize = 1 << blkbits; | |
1898 | sector_t block_in_file; | |
1899 | sector_t last_block; | |
1900 | sector_t last_block_in_file; | |
1901 | sector_t block_nr; | |
1902 | int ret = 0; | |
1903 | ||
4969c06a | 1904 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 1905 | last_block = block_in_file + nr_pages; |
95ae251f | 1906 | last_block_in_file = (f2fs_readpage_limit(inode) + blocksize - 1) >> |
2df0ab04 CY |
1907 | blkbits; |
1908 | if (last_block > last_block_in_file) | |
1909 | last_block = last_block_in_file; | |
1910 | ||
1911 | /* just zeroing out page which is beyond EOF */ | |
1912 | if (block_in_file >= last_block) | |
1913 | goto zero_out; | |
1914 | /* | |
1915 | * Map blocks using the previous result first. | |
1916 | */ | |
1917 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
1918 | block_in_file > map->m_lblk && | |
1919 | block_in_file < (map->m_lblk + map->m_len)) | |
1920 | goto got_it; | |
1921 | ||
1922 | /* | |
1923 | * Then do more f2fs_map_blocks() calls until we are | |
1924 | * done with this page. | |
1925 | */ | |
1926 | map->m_lblk = block_in_file; | |
1927 | map->m_len = last_block - block_in_file; | |
1928 | ||
1929 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1930 | if (ret) | |
1931 | goto out; | |
1932 | got_it: | |
1933 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
1934 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
1935 | SetPageMappedToDisk(page); | |
1936 | ||
4969c06a JK |
1937 | if (!PageUptodate(page) && (!PageSwapCache(page) && |
1938 | !cleancache_get_page(page))) { | |
2df0ab04 CY |
1939 | SetPageUptodate(page); |
1940 | goto confused; | |
1941 | } | |
1942 | ||
1943 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, | |
93770ab7 | 1944 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 1945 | ret = -EFSCORRUPTED; |
2df0ab04 CY |
1946 | goto out; |
1947 | } | |
1948 | } else { | |
1949 | zero_out: | |
1950 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
1951 | if (f2fs_need_verity(inode, page->index) && |
1952 | !fsverity_verify_page(page)) { | |
1953 | ret = -EIO; | |
1954 | goto out; | |
1955 | } | |
2df0ab04 CY |
1956 | if (!PageUptodate(page)) |
1957 | SetPageUptodate(page); | |
1958 | unlock_page(page); | |
1959 | goto out; | |
1960 | } | |
1961 | ||
1962 | /* | |
1963 | * This page will go to BIO. Do we need to send this | |
1964 | * BIO off first? | |
1965 | */ | |
8896cbdf CY |
1966 | if (bio && !page_is_mergeable(F2FS_I_SB(inode), bio, |
1967 | *last_block_in_bio, block_nr)) { | |
2df0ab04 CY |
1968 | submit_and_realloc: |
1969 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
1970 | bio = NULL; | |
1971 | } | |
1972 | if (bio == NULL) { | |
1973 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
95ae251f | 1974 | is_readahead ? REQ_RAHEAD : 0, page->index); |
2df0ab04 CY |
1975 | if (IS_ERR(bio)) { |
1976 | ret = PTR_ERR(bio); | |
1977 | bio = NULL; | |
1978 | goto out; | |
1979 | } | |
1980 | } | |
1981 | ||
1982 | /* | |
1983 | * If the page is under writeback, we need to wait for | |
1984 | * its completion to see the correct decrypted data. | |
1985 | */ | |
1986 | f2fs_wait_on_block_writeback(inode, block_nr); | |
1987 | ||
1988 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
1989 | goto submit_and_realloc; | |
1990 | ||
1991 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
1992 | ClearPageError(page); | |
1993 | *last_block_in_bio = block_nr; | |
1994 | goto out; | |
1995 | confused: | |
1996 | if (bio) { | |
1997 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
1998 | bio = NULL; | |
1999 | } | |
2000 | unlock_page(page); | |
2001 | out: | |
2002 | *bio_ret = bio; | |
2003 | return ret; | |
2004 | } | |
2005 | ||
4c8ff709 CY |
2006 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2007 | int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, | |
2008 | unsigned nr_pages, sector_t *last_block_in_bio, | |
2009 | bool is_readahead) | |
2010 | { | |
2011 | struct dnode_of_data dn; | |
2012 | struct inode *inode = cc->inode; | |
2013 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2014 | struct bio *bio = *bio_ret; | |
2015 | unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; | |
2016 | sector_t last_block_in_file; | |
2017 | const unsigned blkbits = inode->i_blkbits; | |
2018 | const unsigned blocksize = 1 << blkbits; | |
2019 | struct decompress_io_ctx *dic = NULL; | |
2020 | int i; | |
2021 | int ret = 0; | |
2022 | ||
2023 | f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); | |
2024 | ||
2025 | last_block_in_file = (i_size_read(inode) + blocksize - 1) >> blkbits; | |
2026 | ||
2027 | /* get rid of pages beyond EOF */ | |
2028 | for (i = 0; i < cc->cluster_size; i++) { | |
2029 | struct page *page = cc->rpages[i]; | |
2030 | ||
2031 | if (!page) | |
2032 | continue; | |
2033 | if ((sector_t)page->index >= last_block_in_file) { | |
2034 | zero_user_segment(page, 0, PAGE_SIZE); | |
2035 | if (!PageUptodate(page)) | |
2036 | SetPageUptodate(page); | |
2037 | } else if (!PageUptodate(page)) { | |
2038 | continue; | |
2039 | } | |
2040 | unlock_page(page); | |
2041 | cc->rpages[i] = NULL; | |
2042 | cc->nr_rpages--; | |
2043 | } | |
2044 | ||
2045 | /* we are done since all pages are beyond EOF */ | |
2046 | if (f2fs_cluster_is_empty(cc)) | |
2047 | goto out; | |
2048 | ||
2049 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
2050 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
2051 | if (ret) | |
2052 | goto out; | |
2053 | ||
2054 | /* cluster was overwritten as normal cluster */ | |
2055 | if (dn.data_blkaddr != COMPRESS_ADDR) | |
2056 | goto out; | |
2057 | ||
2058 | for (i = 1; i < cc->cluster_size; i++) { | |
2059 | block_t blkaddr; | |
2060 | ||
a2ced1ce | 2061 | blkaddr = data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
2062 | dn.ofs_in_node + i); |
2063 | ||
2064 | if (!__is_valid_data_blkaddr(blkaddr)) | |
2065 | break; | |
2066 | ||
2067 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
2068 | ret = -EFAULT; | |
2069 | goto out_put_dnode; | |
2070 | } | |
2071 | cc->nr_cpages++; | |
2072 | } | |
2073 | ||
2074 | /* nothing to decompress */ | |
2075 | if (cc->nr_cpages == 0) { | |
2076 | ret = 0; | |
2077 | goto out_put_dnode; | |
2078 | } | |
2079 | ||
2080 | dic = f2fs_alloc_dic(cc); | |
2081 | if (IS_ERR(dic)) { | |
2082 | ret = PTR_ERR(dic); | |
2083 | goto out_put_dnode; | |
2084 | } | |
2085 | ||
2086 | for (i = 0; i < dic->nr_cpages; i++) { | |
2087 | struct page *page = dic->cpages[i]; | |
2088 | block_t blkaddr; | |
2089 | ||
a2ced1ce | 2090 | blkaddr = data_blkaddr(dn.inode, dn.node_page, |
4c8ff709 CY |
2091 | dn.ofs_in_node + i + 1); |
2092 | ||
2093 | if (bio && !page_is_mergeable(sbi, bio, | |
2094 | *last_block_in_bio, blkaddr)) { | |
2095 | submit_and_realloc: | |
2096 | __submit_bio(sbi, bio, DATA); | |
2097 | bio = NULL; | |
2098 | } | |
2099 | ||
2100 | if (!bio) { | |
2101 | bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, | |
2102 | is_readahead ? REQ_RAHEAD : 0, | |
2103 | page->index); | |
2104 | if (IS_ERR(bio)) { | |
2105 | ret = PTR_ERR(bio); | |
2106 | bio = NULL; | |
2107 | dic->failed = true; | |
2108 | if (refcount_sub_and_test(dic->nr_cpages - i, | |
2109 | &dic->ref)) | |
2110 | f2fs_decompress_end_io(dic->rpages, | |
2111 | cc->cluster_size, true, | |
2112 | false); | |
2113 | f2fs_free_dic(dic); | |
2114 | f2fs_put_dnode(&dn); | |
2115 | *bio_ret = bio; | |
2116 | return ret; | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
2121 | ||
2122 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2123 | goto submit_and_realloc; | |
2124 | ||
2125 | inc_page_count(sbi, F2FS_RD_DATA); | |
2126 | ClearPageError(page); | |
2127 | *last_block_in_bio = blkaddr; | |
2128 | } | |
2129 | ||
2130 | f2fs_put_dnode(&dn); | |
2131 | ||
2132 | *bio_ret = bio; | |
2133 | return 0; | |
2134 | ||
2135 | out_put_dnode: | |
2136 | f2fs_put_dnode(&dn); | |
2137 | out: | |
2138 | f2fs_decompress_end_io(cc->rpages, cc->cluster_size, true, false); | |
2139 | *bio_ret = bio; | |
2140 | return ret; | |
2141 | } | |
2142 | #endif | |
2143 | ||
f1e88660 JK |
2144 | /* |
2145 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
2146 | * Major change was from block_size == page_size in f2fs by default. | |
e2e59414 JK |
2147 | * |
2148 | * Note that the aops->readpages() function is ONLY used for read-ahead. If | |
2149 | * this function ever deviates from doing just read-ahead, it should either | |
2150 | * use ->readpage() or do the necessary surgery to decouple ->readpages() | |
2151 | * from read-ahead. | |
f1e88660 | 2152 | */ |
4c8ff709 | 2153 | int f2fs_mpage_readpages(struct address_space *mapping, |
f1e88660 | 2154 | struct list_head *pages, struct page *page, |
e2e59414 | 2155 | unsigned nr_pages, bool is_readahead) |
f1e88660 JK |
2156 | { |
2157 | struct bio *bio = NULL; | |
f1e88660 JK |
2158 | sector_t last_block_in_bio = 0; |
2159 | struct inode *inode = mapping->host; | |
f1e88660 | 2160 | struct f2fs_map_blocks map; |
4c8ff709 CY |
2161 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2162 | struct compress_ctx cc = { | |
2163 | .inode = inode, | |
2164 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2165 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2166 | .cluster_idx = NULL_CLUSTER, | |
2167 | .rpages = NULL, | |
2168 | .cpages = NULL, | |
2169 | .nr_rpages = 0, | |
2170 | .nr_cpages = 0, | |
2171 | }; | |
2172 | #endif | |
2173 | unsigned max_nr_pages = nr_pages; | |
2df0ab04 | 2174 | int ret = 0; |
f1e88660 JK |
2175 | |
2176 | map.m_pblk = 0; | |
2177 | map.m_lblk = 0; | |
2178 | map.m_len = 0; | |
2179 | map.m_flags = 0; | |
da85985c | 2180 | map.m_next_pgofs = NULL; |
c4020b2d | 2181 | map.m_next_extent = NULL; |
d5097be5 | 2182 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 2183 | map.m_may_create = false; |
f1e88660 | 2184 | |
736c0a74 | 2185 | for (; nr_pages; nr_pages--) { |
f1e88660 | 2186 | if (pages) { |
939afa94 | 2187 | page = list_last_entry(pages, struct page, lru); |
a83d50bc KM |
2188 | |
2189 | prefetchw(&page->flags); | |
f1e88660 JK |
2190 | list_del(&page->lru); |
2191 | if (add_to_page_cache_lru(page, mapping, | |
4969c06a | 2192 | page_index(page), |
8a5c743e | 2193 | readahead_gfp_mask(mapping))) |
f1e88660 JK |
2194 | goto next_page; |
2195 | } | |
2196 | ||
4c8ff709 CY |
2197 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2198 | if (f2fs_compressed_file(inode)) { | |
2199 | /* there are remained comressed pages, submit them */ | |
2200 | if (!f2fs_cluster_can_merge_page(&cc, page->index)) { | |
2201 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2202 | max_nr_pages, | |
2203 | &last_block_in_bio, | |
2204 | is_readahead); | |
2205 | f2fs_destroy_compress_ctx(&cc); | |
2206 | if (ret) | |
2207 | goto set_error_page; | |
2208 | } | |
2209 | ret = f2fs_is_compressed_cluster(inode, page->index); | |
2210 | if (ret < 0) | |
2211 | goto set_error_page; | |
2212 | else if (!ret) | |
2213 | goto read_single_page; | |
2214 | ||
2215 | ret = f2fs_init_compress_ctx(&cc); | |
2216 | if (ret) | |
2217 | goto set_error_page; | |
2218 | ||
2219 | f2fs_compress_ctx_add_page(&cc, page); | |
2220 | ||
2221 | goto next_page; | |
2222 | } | |
2223 | read_single_page: | |
2224 | #endif | |
2225 | ||
2226 | ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, | |
2227 | &bio, &last_block_in_bio, is_readahead); | |
2df0ab04 | 2228 | if (ret) { |
4c8ff709 CY |
2229 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2230 | set_error_page: | |
2231 | #endif | |
2df0ab04 | 2232 | SetPageError(page); |
09cbfeaf | 2233 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 2234 | unlock_page(page); |
f1e88660 | 2235 | } |
f1e88660 JK |
2236 | next_page: |
2237 | if (pages) | |
09cbfeaf | 2238 | put_page(page); |
4c8ff709 CY |
2239 | |
2240 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2241 | if (f2fs_compressed_file(inode)) { | |
2242 | /* last page */ | |
2243 | if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) { | |
2244 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2245 | max_nr_pages, | |
2246 | &last_block_in_bio, | |
2247 | is_readahead); | |
2248 | f2fs_destroy_compress_ctx(&cc); | |
2249 | } | |
2250 | } | |
2251 | #endif | |
f1e88660 JK |
2252 | } |
2253 | BUG_ON(pages && !list_empty(pages)); | |
2254 | if (bio) | |
4fc29c1a | 2255 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
2df0ab04 | 2256 | return pages ? 0 : ret; |
f1e88660 JK |
2257 | } |
2258 | ||
eb47b800 JK |
2259 | static int f2fs_read_data_page(struct file *file, struct page *page) |
2260 | { | |
4969c06a | 2261 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 2262 | int ret = -EAGAIN; |
9ffe0fb5 | 2263 | |
c20e89cd CY |
2264 | trace_f2fs_readpage(page, DATA); |
2265 | ||
4c8ff709 CY |
2266 | if (!f2fs_is_compress_backend_ready(inode)) { |
2267 | unlock_page(page); | |
2268 | return -EOPNOTSUPP; | |
2269 | } | |
2270 | ||
e1c42045 | 2271 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
2272 | if (f2fs_has_inline_data(inode)) |
2273 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 2274 | if (ret == -EAGAIN) |
4969c06a JK |
2275 | ret = f2fs_mpage_readpages(page_file_mapping(page), |
2276 | NULL, page, 1, false); | |
9ffe0fb5 | 2277 | return ret; |
eb47b800 JK |
2278 | } |
2279 | ||
2280 | static int f2fs_read_data_pages(struct file *file, | |
2281 | struct address_space *mapping, | |
2282 | struct list_head *pages, unsigned nr_pages) | |
2283 | { | |
71cb4aff | 2284 | struct inode *inode = mapping->host; |
939afa94 | 2285 | struct page *page = list_last_entry(pages, struct page, lru); |
b8c29400 CY |
2286 | |
2287 | trace_f2fs_readpages(inode, page, nr_pages); | |
9ffe0fb5 | 2288 | |
4c8ff709 CY |
2289 | if (!f2fs_is_compress_backend_ready(inode)) |
2290 | return 0; | |
2291 | ||
9ffe0fb5 HL |
2292 | /* If the file has inline data, skip readpages */ |
2293 | if (f2fs_has_inline_data(inode)) | |
2294 | return 0; | |
2295 | ||
e2e59414 | 2296 | return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true); |
eb47b800 JK |
2297 | } |
2298 | ||
4c8ff709 | 2299 | int f2fs_encrypt_one_page(struct f2fs_io_info *fio) |
7eab0c0d HP |
2300 | { |
2301 | struct inode *inode = fio->page->mapping->host; | |
4c8ff709 | 2302 | struct page *mpage, *page; |
7eab0c0d HP |
2303 | gfp_t gfp_flags = GFP_NOFS; |
2304 | ||
1958593e | 2305 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
2306 | return 0; |
2307 | ||
4c8ff709 CY |
2308 | page = fio->compressed_page ? fio->compressed_page : fio->page; |
2309 | ||
6dbb1796 | 2310 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 2311 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d HP |
2312 | |
2313 | retry_encrypt: | |
4c8ff709 CY |
2314 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, |
2315 | PAGE_SIZE, 0, gfp_flags); | |
6aa58d8a CY |
2316 | if (IS_ERR(fio->encrypted_page)) { |
2317 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
2318 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
2319 | f2fs_flush_merged_writes(fio->sbi); | |
5df7731f | 2320 | congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT); |
6aa58d8a CY |
2321 | gfp_flags |= __GFP_NOFAIL; |
2322 | goto retry_encrypt; | |
2323 | } | |
2324 | return PTR_ERR(fio->encrypted_page); | |
2325 | } | |
7eab0c0d | 2326 | |
6aa58d8a CY |
2327 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
2328 | if (mpage) { | |
2329 | if (PageUptodate(mpage)) | |
2330 | memcpy(page_address(mpage), | |
2331 | page_address(fio->encrypted_page), PAGE_SIZE); | |
2332 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 2333 | } |
6aa58d8a | 2334 | return 0; |
7eab0c0d HP |
2335 | } |
2336 | ||
bb9e3bb8 CY |
2337 | static inline bool check_inplace_update_policy(struct inode *inode, |
2338 | struct f2fs_io_info *fio) | |
7eab0c0d | 2339 | { |
bb9e3bb8 CY |
2340 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2341 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 2342 | |
bb9e3bb8 CY |
2343 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
2344 | return true; | |
4d57b86d | 2345 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
2346 | return true; |
2347 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
2348 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
2349 | return true; | |
4d57b86d | 2350 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
2351 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
2352 | return true; | |
2353 | ||
2354 | /* | |
2355 | * IPU for rewrite async pages | |
2356 | */ | |
2357 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
2358 | fio && fio->op == REQ_OP_WRITE && | |
2359 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 2360 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
2361 | return true; |
2362 | ||
2363 | /* this is only set during fdatasync */ | |
2364 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
2365 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
2366 | return true; | |
2367 | ||
4354994f DR |
2368 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2369 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2370 | return true; | |
2371 | ||
bb9e3bb8 CY |
2372 | return false; |
2373 | } | |
2374 | ||
4d57b86d | 2375 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 2376 | { |
1ad71a27 JK |
2377 | if (f2fs_is_pinned_file(inode)) |
2378 | return true; | |
bb9e3bb8 CY |
2379 | |
2380 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
2381 | if (file_is_cold(inode)) | |
2382 | return true; | |
2383 | ||
2384 | return check_inplace_update_policy(inode, fio); | |
2385 | } | |
2386 | ||
4d57b86d | 2387 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
2388 | { |
2389 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2390 | ||
b0332a0f | 2391 | if (f2fs_lfs_mode(sbi)) |
bb9e3bb8 CY |
2392 | return true; |
2393 | if (S_ISDIR(inode->i_mode)) | |
2394 | return true; | |
af033b2a CY |
2395 | if (IS_NOQUOTA(inode)) |
2396 | return true; | |
bb9e3bb8 CY |
2397 | if (f2fs_is_atomic_file(inode)) |
2398 | return true; | |
2399 | if (fio) { | |
2400 | if (is_cold_data(fio->page)) | |
2401 | return true; | |
2402 | if (IS_ATOMIC_WRITTEN_PAGE(fio->page)) | |
2403 | return true; | |
4354994f DR |
2404 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2405 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2406 | return true; | |
bb9e3bb8 CY |
2407 | } |
2408 | return false; | |
2409 | } | |
2410 | ||
7eab0c0d HP |
2411 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
2412 | { | |
2413 | struct inode *inode = fio->page->mapping->host; | |
2414 | ||
4d57b86d | 2415 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
2416 | return false; |
2417 | ||
4d57b86d | 2418 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
2419 | } |
2420 | ||
4d57b86d | 2421 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 2422 | { |
05ca3632 | 2423 | struct page *page = fio->page; |
eb47b800 | 2424 | struct inode *inode = page->mapping->host; |
eb47b800 | 2425 | struct dnode_of_data dn; |
e959c8f5 | 2426 | struct extent_info ei = {0,0,0}; |
7735730d | 2427 | struct node_info ni; |
e959c8f5 | 2428 | bool ipu_force = false; |
eb47b800 JK |
2429 | int err = 0; |
2430 | ||
2431 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
e959c8f5 HP |
2432 | if (need_inplace_update(fio) && |
2433 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
2434 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 2435 | |
c9b60788 | 2436 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
93770ab7 | 2437 | DATA_GENERIC_ENHANCE)) |
10f966bb | 2438 | return -EFSCORRUPTED; |
c9b60788 CY |
2439 | |
2440 | ipu_force = true; | |
2441 | fio->need_lock = LOCK_DONE; | |
2442 | goto got_it; | |
e959c8f5 | 2443 | } |
279d6df2 | 2444 | |
d29460e5 JK |
2445 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2446 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2447 | return -EAGAIN; | |
279d6df2 | 2448 | |
4d57b86d | 2449 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2450 | if (err) |
279d6df2 | 2451 | goto out; |
eb47b800 | 2452 | |
28bc106b | 2453 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2454 | |
2455 | /* This page is already truncated */ | |
7a9d7548 | 2456 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2457 | ClearPageUptodate(page); |
2baf0781 | 2458 | clear_cold_data(page); |
eb47b800 | 2459 | goto out_writepage; |
2bca1e23 | 2460 | } |
e959c8f5 | 2461 | got_it: |
c9b60788 CY |
2462 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2463 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2464 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2465 | err = -EFSCORRUPTED; |
c9b60788 CY |
2466 | goto out_writepage; |
2467 | } | |
eb47b800 JK |
2468 | /* |
2469 | * If current allocation needs SSR, | |
2470 | * it had better in-place writes for updated data. | |
2471 | */ | |
93770ab7 CY |
2472 | if (ipu_force || |
2473 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2474 | need_inplace_update(fio))) { |
4c8ff709 | 2475 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2476 | if (err) |
2477 | goto out_writepage; | |
2478 | ||
2479 | set_page_writeback(page); | |
17c50035 | 2480 | ClearPageError(page); |
279d6df2 | 2481 | f2fs_put_dnode(&dn); |
cc15620b | 2482 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2483 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2484 | err = f2fs_inplace_write_data(fio); |
6492a335 CY |
2485 | if (err) { |
2486 | if (f2fs_encrypted_file(inode)) | |
d2d0727b | 2487 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2488 | if (PageWriteback(page)) |
2489 | end_page_writeback(page); | |
cd23ffa9 CY |
2490 | } else { |
2491 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2492 | } |
7eab0c0d | 2493 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2494 | return err; |
eb47b800 | 2495 | } |
279d6df2 | 2496 | |
cc15620b JK |
2497 | if (fio->need_lock == LOCK_RETRY) { |
2498 | if (!f2fs_trylock_op(fio->sbi)) { | |
2499 | err = -EAGAIN; | |
2500 | goto out_writepage; | |
2501 | } | |
2502 | fio->need_lock = LOCK_REQ; | |
2503 | } | |
2504 | ||
7735730d CY |
2505 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni); |
2506 | if (err) | |
2507 | goto out_writepage; | |
2508 | ||
2509 | fio->version = ni.version; | |
2510 | ||
4c8ff709 | 2511 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2512 | if (err) |
2513 | goto out_writepage; | |
2514 | ||
2515 | set_page_writeback(page); | |
17c50035 | 2516 | ClearPageError(page); |
cc15620b | 2517 | |
4c8ff709 CY |
2518 | if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) |
2519 | f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); | |
2520 | ||
279d6df2 | 2521 | /* LFS mode write path */ |
4d57b86d | 2522 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2523 | trace_f2fs_do_write_data_page(page, OPU); |
2524 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2525 | if (page->index == 0) | |
2526 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2527 | out_writepage: |
2528 | f2fs_put_dnode(&dn); | |
279d6df2 | 2529 | out: |
cc15620b | 2530 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2531 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2532 | return err; |
2533 | } | |
2534 | ||
4c8ff709 | 2535 | int f2fs_write_single_data_page(struct page *page, int *submitted, |
8648de2c CY |
2536 | struct bio **bio, |
2537 | sector_t *last_block, | |
b0af6d49 | 2538 | struct writeback_control *wbc, |
4c8ff709 CY |
2539 | enum iostat_type io_type, |
2540 | int compr_blocks) | |
eb47b800 JK |
2541 | { |
2542 | struct inode *inode = page->mapping->host; | |
4081363f | 2543 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 | 2544 | loff_t i_size = i_size_read(inode); |
4c8ff709 | 2545 | const pgoff_t end_index = ((unsigned long long)i_size) |
09cbfeaf | 2546 | >> PAGE_SHIFT; |
1f0d5c91 | 2547 | loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2548 | unsigned offset = 0; |
39936837 | 2549 | bool need_balance_fs = false; |
eb47b800 | 2550 | int err = 0; |
458e6197 | 2551 | struct f2fs_io_info fio = { |
05ca3632 | 2552 | .sbi = sbi, |
39d787be | 2553 | .ino = inode->i_ino, |
458e6197 | 2554 | .type = DATA, |
04d328de | 2555 | .op = REQ_OP_WRITE, |
7637241e | 2556 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2557 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2558 | .page = page, |
4375a336 | 2559 | .encrypted_page = NULL, |
d68f735b | 2560 | .submitted = false, |
4c8ff709 | 2561 | .compr_blocks = compr_blocks, |
cc15620b | 2562 | .need_lock = LOCK_RETRY, |
b0af6d49 | 2563 | .io_type = io_type, |
578c6478 | 2564 | .io_wbc = wbc, |
8648de2c CY |
2565 | .bio = bio, |
2566 | .last_block = last_block, | |
458e6197 | 2567 | }; |
eb47b800 | 2568 | |
ecda0de3 CY |
2569 | trace_f2fs_writepage(page, DATA); |
2570 | ||
db198ae0 CY |
2571 | /* we should bypass data pages to proceed the kworkder jobs */ |
2572 | if (unlikely(f2fs_cp_error(sbi))) { | |
2573 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2574 | /* |
2575 | * don't drop any dirty dentry pages for keeping lastest | |
2576 | * directory structure. | |
2577 | */ | |
2578 | if (S_ISDIR(inode->i_mode)) | |
2579 | goto redirty_out; | |
db198ae0 CY |
2580 | goto out; |
2581 | } | |
2582 | ||
0771fcc7 CY |
2583 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2584 | goto redirty_out; | |
2585 | ||
4c8ff709 CY |
2586 | if (page->index < end_index || |
2587 | f2fs_verity_in_progress(inode) || | |
2588 | compr_blocks) | |
39936837 | 2589 | goto write; |
eb47b800 JK |
2590 | |
2591 | /* | |
2592 | * If the offset is out-of-range of file size, | |
2593 | * this page does not have to be written to disk. | |
2594 | */ | |
09cbfeaf | 2595 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2596 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2597 | goto out; |
eb47b800 | 2598 | |
09cbfeaf | 2599 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2600 | write: |
1e84371f JK |
2601 | if (f2fs_is_drop_cache(inode)) |
2602 | goto out; | |
e6e5f561 JK |
2603 | /* we should not write 0'th page having journal header */ |
2604 | if (f2fs_is_volatile_file(inode) && (!page->index || | |
2605 | (!wbc->for_reclaim && | |
4d57b86d | 2606 | f2fs_available_free_memory(sbi, BASE_CHECK)))) |
1e84371f | 2607 | goto redirty_out; |
eb47b800 | 2608 | |
39936837 | 2609 | /* Dentry blocks are controlled by checkpoint */ |
eb47b800 | 2610 | if (S_ISDIR(inode->i_mode)) { |
cc15620b | 2611 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2612 | err = f2fs_do_write_data_page(&fio); |
8618b881 JK |
2613 | goto done; |
2614 | } | |
9ffe0fb5 | 2615 | |
8618b881 | 2616 | if (!wbc->for_reclaim) |
39936837 | 2617 | need_balance_fs = true; |
7f3037a5 | 2618 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2619 | goto redirty_out; |
ef095d19 JK |
2620 | else |
2621 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2622 | |
b3d208f9 | 2623 | err = -EAGAIN; |
dd7b2333 | 2624 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2625 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2626 | if (!err) |
2627 | goto out; | |
2628 | } | |
279d6df2 | 2629 | |
cc15620b | 2630 | if (err == -EAGAIN) { |
4d57b86d | 2631 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2632 | if (err == -EAGAIN) { |
2633 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2634 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2635 | } |
2636 | } | |
a0d00fad | 2637 | |
eb449797 CY |
2638 | if (err) { |
2639 | file_set_keep_isize(inode); | |
2640 | } else { | |
c10c9820 | 2641 | spin_lock(&F2FS_I(inode)->i_size_lock); |
eb449797 CY |
2642 | if (F2FS_I(inode)->last_disk_size < psize) |
2643 | F2FS_I(inode)->last_disk_size = psize; | |
c10c9820 | 2644 | spin_unlock(&F2FS_I(inode)->i_size_lock); |
eb449797 | 2645 | } |
279d6df2 | 2646 | |
8618b881 JK |
2647 | done: |
2648 | if (err && err != -ENOENT) | |
2649 | goto redirty_out; | |
eb47b800 | 2650 | |
39936837 | 2651 | out: |
a7ffdbe2 | 2652 | inode_dec_dirty_pages(inode); |
2baf0781 | 2653 | if (err) { |
2bca1e23 | 2654 | ClearPageUptodate(page); |
2baf0781 CY |
2655 | clear_cold_data(page); |
2656 | } | |
0c3a5797 CY |
2657 | |
2658 | if (wbc->for_reclaim) { | |
bab475c5 | 2659 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2660 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2661 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2662 | submitted = NULL; |
0c3a5797 | 2663 | } |
eb47b800 | 2664 | unlock_page(page); |
186857c5 | 2665 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
0b20fcec | 2666 | !F2FS_I(inode)->cp_task) |
a7881893 | 2667 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2668 | |
d68f735b | 2669 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2670 | f2fs_submit_merged_write(sbi, DATA); |
0b20fcec | 2671 | f2fs_submit_merged_ipu_write(sbi, bio, NULL); |
d68f735b JK |
2672 | submitted = NULL; |
2673 | } | |
2674 | ||
2675 | if (submitted) | |
4c8ff709 | 2676 | *submitted = fio.submitted ? 1 : 0; |
0c3a5797 | 2677 | |
eb47b800 JK |
2678 | return 0; |
2679 | ||
eb47b800 | 2680 | redirty_out: |
76f60268 | 2681 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2682 | /* |
2683 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2684 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2685 | * file_write_and_wait_range() will see EIO error, which is critical | |
2686 | * to return value of fsync() followed by atomic_write failure to user. | |
2687 | */ | |
2688 | if (!err || wbc->for_reclaim) | |
0002b61b | 2689 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2690 | unlock_page(page); |
2691 | return err; | |
fa9150a8 NJ |
2692 | } |
2693 | ||
f566bae8 JK |
2694 | static int f2fs_write_data_page(struct page *page, |
2695 | struct writeback_control *wbc) | |
2696 | { | |
4c8ff709 CY |
2697 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2698 | struct inode *inode = page->mapping->host; | |
2699 | ||
2700 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) | |
2701 | goto out; | |
2702 | ||
2703 | if (f2fs_compressed_file(inode)) { | |
2704 | if (f2fs_is_compressed_cluster(inode, page->index)) { | |
2705 | redirty_page_for_writepage(wbc, page); | |
2706 | return AOP_WRITEPAGE_ACTIVATE; | |
2707 | } | |
2708 | } | |
2709 | out: | |
2710 | #endif | |
2711 | ||
2712 | return f2fs_write_single_data_page(page, NULL, NULL, NULL, | |
2713 | wbc, FS_DATA_IO, 0); | |
f566bae8 JK |
2714 | } |
2715 | ||
8f46dcae CY |
2716 | /* |
2717 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2718 | * The major change is making write step of cold data page separately from | |
2719 | * warm/hot data page. | |
2720 | */ | |
2721 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2722 | struct writeback_control *wbc, |
2723 | enum iostat_type io_type) | |
8f46dcae CY |
2724 | { |
2725 | int ret = 0; | |
4c8ff709 | 2726 | int done = 0, retry = 0; |
8f46dcae | 2727 | struct pagevec pvec; |
c29fd0c0 | 2728 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2729 | struct bio *bio = NULL; |
2730 | sector_t last_block; | |
4c8ff709 CY |
2731 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2732 | struct inode *inode = mapping->host; | |
2733 | struct compress_ctx cc = { | |
2734 | .inode = inode, | |
2735 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2736 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2737 | .cluster_idx = NULL_CLUSTER, | |
2738 | .rpages = NULL, | |
2739 | .nr_rpages = 0, | |
2740 | .cpages = NULL, | |
2741 | .rbuf = NULL, | |
2742 | .cbuf = NULL, | |
2743 | .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, | |
2744 | .private = NULL, | |
2745 | }; | |
2746 | #endif | |
8f46dcae CY |
2747 | int nr_pages; |
2748 | pgoff_t uninitialized_var(writeback_index); | |
2749 | pgoff_t index; | |
2750 | pgoff_t end; /* Inclusive */ | |
2751 | pgoff_t done_index; | |
2752 | int cycled; | |
2753 | int range_whole = 0; | |
10bbd235 | 2754 | xa_mark_t tag; |
bab475c5 | 2755 | int nwritten = 0; |
4c8ff709 CY |
2756 | int submitted = 0; |
2757 | int i; | |
8f46dcae | 2758 | |
86679820 | 2759 | pagevec_init(&pvec); |
46ae957f | 2760 | |
ef095d19 JK |
2761 | if (get_dirty_pages(mapping->host) <= |
2762 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2763 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2764 | else | |
2765 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2766 | ||
8f46dcae CY |
2767 | if (wbc->range_cyclic) { |
2768 | writeback_index = mapping->writeback_index; /* prev offset */ | |
2769 | index = writeback_index; | |
2770 | if (index == 0) | |
2771 | cycled = 1; | |
2772 | else | |
2773 | cycled = 0; | |
2774 | end = -1; | |
2775 | } else { | |
09cbfeaf KS |
2776 | index = wbc->range_start >> PAGE_SHIFT; |
2777 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2778 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2779 | range_whole = 1; | |
2780 | cycled = 1; /* ignore range_cyclic tests */ | |
2781 | } | |
2782 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2783 | tag = PAGECACHE_TAG_TOWRITE; | |
2784 | else | |
2785 | tag = PAGECACHE_TAG_DIRTY; | |
2786 | retry: | |
4c8ff709 | 2787 | retry = 0; |
8f46dcae CY |
2788 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) |
2789 | tag_pages_for_writeback(mapping, index, end); | |
2790 | done_index = index; | |
4c8ff709 | 2791 | while (!done && !retry && (index <= end)) { |
69c4f35d | 2792 | nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end, |
67fd707f | 2793 | tag); |
8f46dcae CY |
2794 | if (nr_pages == 0) |
2795 | break; | |
2796 | ||
2797 | for (i = 0; i < nr_pages; i++) { | |
2798 | struct page *page = pvec.pages[i]; | |
4c8ff709 CY |
2799 | bool need_readd; |
2800 | readd: | |
2801 | need_readd = false; | |
2802 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2803 | if (f2fs_compressed_file(inode)) { | |
2804 | ret = f2fs_init_compress_ctx(&cc); | |
2805 | if (ret) { | |
2806 | done = 1; | |
2807 | break; | |
2808 | } | |
2809 | ||
2810 | if (!f2fs_cluster_can_merge_page(&cc, | |
2811 | page->index)) { | |
2812 | ret = f2fs_write_multi_pages(&cc, | |
2813 | &submitted, wbc, io_type); | |
2814 | if (!ret) | |
2815 | need_readd = true; | |
2816 | goto result; | |
2817 | } | |
8f46dcae | 2818 | |
4c8ff709 CY |
2819 | if (unlikely(f2fs_cp_error(sbi))) |
2820 | goto lock_page; | |
2821 | ||
2822 | if (f2fs_cluster_is_empty(&cc)) { | |
2823 | void *fsdata = NULL; | |
2824 | struct page *pagep; | |
2825 | int ret2; | |
2826 | ||
2827 | ret2 = f2fs_prepare_compress_overwrite( | |
2828 | inode, &pagep, | |
2829 | page->index, &fsdata); | |
2830 | if (ret2 < 0) { | |
2831 | ret = ret2; | |
2832 | done = 1; | |
2833 | break; | |
2834 | } else if (ret2 && | |
2835 | !f2fs_compress_write_end(inode, | |
2836 | fsdata, page->index, | |
2837 | 1)) { | |
2838 | retry = 1; | |
2839 | break; | |
2840 | } | |
2841 | } else { | |
2842 | goto lock_page; | |
2843 | } | |
2844 | } | |
2845 | #endif | |
f8de4331 | 2846 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 2847 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
2848 | wbc->sync_mode == WB_SYNC_NONE) { |
2849 | done = 1; | |
2850 | break; | |
2851 | } | |
4c8ff709 CY |
2852 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2853 | lock_page: | |
2854 | #endif | |
8f46dcae | 2855 | done_index = page->index; |
d29460e5 | 2856 | retry_write: |
8f46dcae CY |
2857 | lock_page(page); |
2858 | ||
2859 | if (unlikely(page->mapping != mapping)) { | |
2860 | continue_unlock: | |
2861 | unlock_page(page); | |
2862 | continue; | |
2863 | } | |
2864 | ||
2865 | if (!PageDirty(page)) { | |
2866 | /* someone wrote it for us */ | |
2867 | goto continue_unlock; | |
2868 | } | |
2869 | ||
8f46dcae | 2870 | if (PageWriteback(page)) { |
0b20fcec | 2871 | if (wbc->sync_mode != WB_SYNC_NONE) |
fec1d657 | 2872 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 2873 | DATA, true, true); |
0b20fcec | 2874 | else |
8f46dcae CY |
2875 | goto continue_unlock; |
2876 | } | |
2877 | ||
8f46dcae CY |
2878 | if (!clear_page_dirty_for_io(page)) |
2879 | goto continue_unlock; | |
2880 | ||
4c8ff709 CY |
2881 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2882 | if (f2fs_compressed_file(inode)) { | |
2883 | get_page(page); | |
2884 | f2fs_compress_ctx_add_page(&cc, page); | |
2885 | continue; | |
2886 | } | |
2887 | #endif | |
2888 | ret = f2fs_write_single_data_page(page, &submitted, | |
2889 | &bio, &last_block, wbc, io_type, 0); | |
2890 | if (ret == AOP_WRITEPAGE_ACTIVATE) | |
2891 | unlock_page(page); | |
2892 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2893 | result: | |
2894 | #endif | |
2895 | nwritten += submitted; | |
2896 | wbc->nr_to_write -= submitted; | |
2897 | ||
8f46dcae | 2898 | if (unlikely(ret)) { |
0002b61b CY |
2899 | /* |
2900 | * keep nr_to_write, since vfs uses this to | |
2901 | * get # of written pages. | |
2902 | */ | |
2903 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
0002b61b | 2904 | ret = 0; |
4c8ff709 | 2905 | goto next; |
d29460e5 JK |
2906 | } else if (ret == -EAGAIN) { |
2907 | ret = 0; | |
2908 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
2909 | cond_resched(); | |
2910 | congestion_wait(BLK_RW_ASYNC, | |
5df7731f | 2911 | DEFAULT_IO_TIMEOUT); |
d29460e5 JK |
2912 | goto retry_write; |
2913 | } | |
4c8ff709 | 2914 | goto next; |
0002b61b | 2915 | } |
b230e6ca JK |
2916 | done_index = page->index + 1; |
2917 | done = 1; | |
2918 | break; | |
8f46dcae CY |
2919 | } |
2920 | ||
4c8ff709 | 2921 | if (wbc->nr_to_write <= 0 && |
687de7f1 | 2922 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
2923 | done = 1; |
2924 | break; | |
2925 | } | |
4c8ff709 CY |
2926 | next: |
2927 | if (need_readd) | |
2928 | goto readd; | |
8f46dcae CY |
2929 | } |
2930 | pagevec_release(&pvec); | |
2931 | cond_resched(); | |
2932 | } | |
4c8ff709 CY |
2933 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2934 | /* flush remained pages in compress cluster */ | |
2935 | if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) { | |
2936 | ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); | |
2937 | nwritten += submitted; | |
2938 | wbc->nr_to_write -= submitted; | |
2939 | if (ret) { | |
2940 | done = 1; | |
2941 | retry = 0; | |
2942 | } | |
2943 | } | |
2944 | #endif | |
2945 | if ((!cycled && !done) || retry) { | |
8f46dcae CY |
2946 | cycled = 1; |
2947 | index = 0; | |
2948 | end = writeback_index - 1; | |
2949 | goto retry; | |
2950 | } | |
2951 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) | |
2952 | mapping->writeback_index = done_index; | |
2953 | ||
bab475c5 | 2954 | if (nwritten) |
b9109b0e | 2955 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 2956 | NULL, 0, DATA); |
8648de2c CY |
2957 | /* submit cached bio of IPU write */ |
2958 | if (bio) | |
0b20fcec | 2959 | f2fs_submit_merged_ipu_write(sbi, &bio, NULL); |
6ca56ca4 | 2960 | |
8f46dcae CY |
2961 | return ret; |
2962 | } | |
2963 | ||
853137ce JK |
2964 | static inline bool __should_serialize_io(struct inode *inode, |
2965 | struct writeback_control *wbc) | |
2966 | { | |
2967 | if (!S_ISREG(inode->i_mode)) | |
2968 | return false; | |
4c8ff709 CY |
2969 | if (f2fs_compressed_file(inode)) |
2970 | return true; | |
af033b2a CY |
2971 | if (IS_NOQUOTA(inode)) |
2972 | return false; | |
040d2bb3 CY |
2973 | /* to avoid deadlock in path of data flush */ |
2974 | if (F2FS_I(inode)->cp_task) | |
2975 | return false; | |
853137ce JK |
2976 | if (wbc->sync_mode != WB_SYNC_ALL) |
2977 | return true; | |
2978 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
2979 | return true; | |
2980 | return false; | |
2981 | } | |
2982 | ||
fc99fe27 | 2983 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
2984 | struct writeback_control *wbc, |
2985 | enum iostat_type io_type) | |
eb47b800 JK |
2986 | { |
2987 | struct inode *inode = mapping->host; | |
4081363f | 2988 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 2989 | struct blk_plug plug; |
eb47b800 | 2990 | int ret; |
853137ce | 2991 | bool locked = false; |
eb47b800 | 2992 | |
cfb185a1 | 2993 | /* deal with chardevs and other special file */ |
2994 | if (!mapping->a_ops->writepage) | |
2995 | return 0; | |
2996 | ||
6a290544 CY |
2997 | /* skip writing if there is no dirty page in this inode */ |
2998 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
2999 | return 0; | |
3000 | ||
0771fcc7 CY |
3001 | /* during POR, we don't need to trigger writepage at all. */ |
3002 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
3003 | goto skip_write; | |
3004 | ||
af033b2a CY |
3005 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
3006 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 3007 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 3008 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
3009 | goto skip_write; |
3010 | ||
d323d005 | 3011 | /* skip writing during file defragment */ |
91942321 | 3012 | if (is_inode_flag_set(inode, FI_DO_DEFRAG)) |
d323d005 CY |
3013 | goto skip_write; |
3014 | ||
d31c7c3f YH |
3015 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
3016 | ||
687de7f1 JK |
3017 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
3018 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 CY |
3019 | atomic_inc(&sbi->wb_sync_req[DATA]); |
3020 | else if (atomic_read(&sbi->wb_sync_req[DATA])) | |
687de7f1 JK |
3021 | goto skip_write; |
3022 | ||
853137ce JK |
3023 | if (__should_serialize_io(inode, wbc)) { |
3024 | mutex_lock(&sbi->writepages); | |
3025 | locked = true; | |
3026 | } | |
3027 | ||
9dfa1baf | 3028 | blk_start_plug(&plug); |
b0af6d49 | 3029 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 3030 | blk_finish_plug(&plug); |
687de7f1 | 3031 | |
853137ce JK |
3032 | if (locked) |
3033 | mutex_unlock(&sbi->writepages); | |
3034 | ||
687de7f1 | 3035 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 3036 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
3037 | /* |
3038 | * if some pages were truncated, we cannot guarantee its mapping->host | |
3039 | * to detect pending bios. | |
3040 | */ | |
458e6197 | 3041 | |
4d57b86d | 3042 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 3043 | return ret; |
d3baf95d JK |
3044 | |
3045 | skip_write: | |
a7ffdbe2 | 3046 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 3047 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 3048 | return 0; |
eb47b800 JK |
3049 | } |
3050 | ||
b0af6d49 CY |
3051 | static int f2fs_write_data_pages(struct address_space *mapping, |
3052 | struct writeback_control *wbc) | |
3053 | { | |
3054 | struct inode *inode = mapping->host; | |
3055 | ||
3056 | return __f2fs_write_data_pages(mapping, wbc, | |
3057 | F2FS_I(inode)->cp_task == current ? | |
3058 | FS_CP_DATA_IO : FS_DATA_IO); | |
3059 | } | |
3060 | ||
3aab8f82 CY |
3061 | static void f2fs_write_failed(struct address_space *mapping, loff_t to) |
3062 | { | |
3063 | struct inode *inode = mapping->host; | |
819d9153 | 3064 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 3065 | |
3f188c23 JK |
3066 | if (IS_NOQUOTA(inode)) |
3067 | return; | |
3068 | ||
95ae251f EB |
3069 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
3070 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
a33c1502 | 3071 | down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6f8d4455 | 3072 | down_write(&F2FS_I(inode)->i_mmap_sem); |
a33c1502 | 3073 | |
819d9153 | 3074 | truncate_pagecache(inode, i_size); |
3f188c23 | 3075 | f2fs_truncate_blocks(inode, i_size, true); |
a33c1502 | 3076 | |
5a3a2d83 | 3077 | up_write(&F2FS_I(inode)->i_mmap_sem); |
6f8d4455 | 3078 | up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
3079 | } |
3080 | } | |
3081 | ||
2aadac08 JK |
3082 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
3083 | struct page *page, loff_t pos, unsigned len, | |
3084 | block_t *blk_addr, bool *node_changed) | |
3085 | { | |
3086 | struct inode *inode = page->mapping->host; | |
3087 | pgoff_t index = page->index; | |
3088 | struct dnode_of_data dn; | |
3089 | struct page *ipage; | |
b4d07a3e | 3090 | bool locked = false; |
e15882b6 | 3091 | struct extent_info ei = {0,0,0}; |
2aadac08 | 3092 | int err = 0; |
2866fb16 | 3093 | int flag; |
2aadac08 | 3094 | |
24b84912 JK |
3095 | /* |
3096 | * we already allocated all the blocks, so we don't need to get | |
3097 | * the block addresses when there is no need to fill the page. | |
3098 | */ | |
dc91de78 | 3099 | if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE && |
95ae251f EB |
3100 | !is_inode_flag_set(inode, FI_NO_PREALLOC) && |
3101 | !f2fs_verity_in_progress(inode)) | |
24b84912 JK |
3102 | return 0; |
3103 | ||
2866fb16 SY |
3104 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
3105 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
3106 | flag = F2FS_GET_BLOCK_DEFAULT; | |
3107 | else | |
3108 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
3109 | ||
b4d07a3e | 3110 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 3111 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
2866fb16 | 3112 | __do_map_lock(sbi, flag, true); |
b4d07a3e JK |
3113 | locked = true; |
3114 | } | |
4c8ff709 | 3115 | |
b4d07a3e | 3116 | restart: |
2aadac08 | 3117 | /* check inline_data */ |
4d57b86d | 3118 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
3119 | if (IS_ERR(ipage)) { |
3120 | err = PTR_ERR(ipage); | |
3121 | goto unlock_out; | |
3122 | } | |
3123 | ||
3124 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3125 | ||
3126 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 3127 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 3128 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 3129 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d CY |
3130 | if (inode->i_nlink) |
3131 | set_inline_node(ipage); | |
2aadac08 JK |
3132 | } else { |
3133 | err = f2fs_convert_inline_page(&dn, page); | |
3134 | if (err) | |
b4d07a3e JK |
3135 | goto out; |
3136 | if (dn.data_blkaddr == NULL_ADDR) | |
3137 | err = f2fs_get_block(&dn, index); | |
3138 | } | |
3139 | } else if (locked) { | |
3140 | err = f2fs_get_block(&dn, index); | |
3141 | } else { | |
3142 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
3143 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
3144 | } else { | |
b4d07a3e | 3145 | /* hole case */ |
4d57b86d | 3146 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 3147 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 3148 | f2fs_put_dnode(&dn); |
59c9081b YH |
3149 | __do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
3150 | true); | |
2866fb16 | 3151 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
3152 | locked = true; |
3153 | goto restart; | |
3154 | } | |
2aadac08 JK |
3155 | } |
3156 | } | |
b4d07a3e | 3157 | |
2aadac08 JK |
3158 | /* convert_inline_page can make node_changed */ |
3159 | *blk_addr = dn.data_blkaddr; | |
3160 | *node_changed = dn.node_changed; | |
b4d07a3e | 3161 | out: |
2aadac08 JK |
3162 | f2fs_put_dnode(&dn); |
3163 | unlock_out: | |
b4d07a3e | 3164 | if (locked) |
2866fb16 | 3165 | __do_map_lock(sbi, flag, false); |
2aadac08 JK |
3166 | return err; |
3167 | } | |
3168 | ||
eb47b800 JK |
3169 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
3170 | loff_t pos, unsigned len, unsigned flags, | |
3171 | struct page **pagep, void **fsdata) | |
3172 | { | |
3173 | struct inode *inode = mapping->host; | |
4081363f | 3174 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 3175 | struct page *page = NULL; |
09cbfeaf | 3176 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
a2e2e76b | 3177 | bool need_balance = false, drop_atomic = false; |
2aadac08 | 3178 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
3179 | int err = 0; |
3180 | ||
62aed044 CY |
3181 | trace_f2fs_write_begin(inode, pos, len, flags); |
3182 | ||
00e09c0b CY |
3183 | if (!f2fs_is_checkpoint_ready(sbi)) { |
3184 | err = -ENOSPC; | |
4354994f | 3185 | goto fail; |
00e09c0b | 3186 | } |
4354994f | 3187 | |
455e3a58 JK |
3188 | if ((f2fs_is_atomic_file(inode) && |
3189 | !f2fs_available_free_memory(sbi, INMEM_PAGES)) || | |
3190 | is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { | |
57864ae5 | 3191 | err = -ENOMEM; |
a2e2e76b | 3192 | drop_atomic = true; |
57864ae5 JK |
3193 | goto fail; |
3194 | } | |
3195 | ||
5f727395 JK |
3196 | /* |
3197 | * We should check this at this moment to avoid deadlock on inode page | |
3198 | * and #0 page. The locking rule for inline_data conversion should be: | |
3199 | * lock_page(page #0) -> lock_page(inode_page) | |
3200 | */ | |
3201 | if (index != 0) { | |
3202 | err = f2fs_convert_inline_inode(inode); | |
3203 | if (err) | |
3204 | goto fail; | |
3205 | } | |
4c8ff709 CY |
3206 | |
3207 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3208 | if (f2fs_compressed_file(inode)) { | |
3209 | int ret; | |
3210 | ||
3211 | *fsdata = NULL; | |
3212 | ||
3213 | ret = f2fs_prepare_compress_overwrite(inode, pagep, | |
3214 | index, fsdata); | |
3215 | if (ret < 0) { | |
3216 | err = ret; | |
3217 | goto fail; | |
3218 | } else if (ret) { | |
3219 | return 0; | |
3220 | } | |
3221 | } | |
3222 | #endif | |
3223 | ||
afcb7ca0 | 3224 | repeat: |
86d54795 JK |
3225 | /* |
3226 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
3227 | * wait_for_stable_page. Will wait that below with our IO control. | |
3228 | */ | |
01eccef7 | 3229 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 3230 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
3231 | if (!page) { |
3232 | err = -ENOMEM; | |
3233 | goto fail; | |
3234 | } | |
d5f66990 | 3235 | |
4c8ff709 CY |
3236 | /* TODO: cluster can be compressed due to race with .writepage */ |
3237 | ||
eb47b800 JK |
3238 | *pagep = page; |
3239 | ||
2aadac08 JK |
3240 | err = prepare_write_begin(sbi, page, pos, len, |
3241 | &blkaddr, &need_balance); | |
9ba69cf9 | 3242 | if (err) |
2aadac08 | 3243 | goto fail; |
9ba69cf9 | 3244 | |
af033b2a CY |
3245 | if (need_balance && !IS_NOQUOTA(inode) && |
3246 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 3247 | unlock_page(page); |
2c4db1a6 | 3248 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
3249 | lock_page(page); |
3250 | if (page->mapping != mapping) { | |
3251 | /* The page got truncated from under us */ | |
3252 | f2fs_put_page(page, 1); | |
3253 | goto repeat; | |
3254 | } | |
3255 | } | |
3256 | ||
bae0ee7a | 3257 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 3258 | |
649d7df2 JK |
3259 | if (len == PAGE_SIZE || PageUptodate(page)) |
3260 | return 0; | |
eb47b800 | 3261 | |
95ae251f EB |
3262 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
3263 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
3264 | zero_user_segment(page, len, PAGE_SIZE); |
3265 | return 0; | |
3266 | } | |
3267 | ||
2aadac08 | 3268 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 3269 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 3270 | SetPageUptodate(page); |
eb47b800 | 3271 | } else { |
93770ab7 CY |
3272 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
3273 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 3274 | err = -EFSCORRUPTED; |
93770ab7 CY |
3275 | goto fail; |
3276 | } | |
13ba41e3 JK |
3277 | err = f2fs_submit_page_read(inode, page, blkaddr); |
3278 | if (err) | |
78682f79 | 3279 | goto fail; |
d54c795b | 3280 | |
393ff91f | 3281 | lock_page(page); |
6bacf52f | 3282 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
3283 | f2fs_put_page(page, 1); |
3284 | goto repeat; | |
eb47b800 | 3285 | } |
1563ac75 CY |
3286 | if (unlikely(!PageUptodate(page))) { |
3287 | err = -EIO; | |
3288 | goto fail; | |
4375a336 | 3289 | } |
eb47b800 | 3290 | } |
eb47b800 | 3291 | return 0; |
9ba69cf9 | 3292 | |
3aab8f82 | 3293 | fail: |
86531d6b | 3294 | f2fs_put_page(page, 1); |
3aab8f82 | 3295 | f2fs_write_failed(mapping, pos + len); |
a2e2e76b | 3296 | if (drop_atomic) |
4d57b86d | 3297 | f2fs_drop_inmem_pages_all(sbi, false); |
3aab8f82 | 3298 | return err; |
eb47b800 JK |
3299 | } |
3300 | ||
a1dd3c13 JK |
3301 | static int f2fs_write_end(struct file *file, |
3302 | struct address_space *mapping, | |
3303 | loff_t pos, unsigned len, unsigned copied, | |
3304 | struct page *page, void *fsdata) | |
3305 | { | |
3306 | struct inode *inode = page->mapping->host; | |
3307 | ||
dfb2bf38 CY |
3308 | trace_f2fs_write_end(inode, pos, len, copied); |
3309 | ||
649d7df2 JK |
3310 | /* |
3311 | * This should be come from len == PAGE_SIZE, and we expect copied | |
3312 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
3313 | * let generic_perform_write() try to copy data again through copied=0. | |
3314 | */ | |
3315 | if (!PageUptodate(page)) { | |
746e2403 | 3316 | if (unlikely(copied != len)) |
649d7df2 JK |
3317 | copied = 0; |
3318 | else | |
3319 | SetPageUptodate(page); | |
3320 | } | |
4c8ff709 CY |
3321 | |
3322 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3323 | /* overwrite compressed file */ | |
3324 | if (f2fs_compressed_file(inode) && fsdata) { | |
3325 | f2fs_compress_write_end(inode, fsdata, page->index, copied); | |
3326 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
3327 | return copied; | |
3328 | } | |
3329 | #endif | |
3330 | ||
649d7df2 JK |
3331 | if (!copied) |
3332 | goto unlock_out; | |
3333 | ||
34ba94ba | 3334 | set_page_dirty(page); |
a1dd3c13 | 3335 | |
95ae251f EB |
3336 | if (pos + copied > i_size_read(inode) && |
3337 | !f2fs_verity_in_progress(inode)) | |
fc9581c8 | 3338 | f2fs_i_size_write(inode, pos + copied); |
649d7df2 | 3339 | unlock_out: |
3024c9a1 | 3340 | f2fs_put_page(page, 1); |
d0239e1b | 3341 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
3342 | return copied; |
3343 | } | |
3344 | ||
6f673763 OS |
3345 | static int check_direct_IO(struct inode *inode, struct iov_iter *iter, |
3346 | loff_t offset) | |
944fcfc1 | 3347 | { |
8a56dd96 JK |
3348 | unsigned i_blkbits = READ_ONCE(inode->i_blkbits); |
3349 | unsigned blkbits = i_blkbits; | |
3350 | unsigned blocksize_mask = (1 << blkbits) - 1; | |
3351 | unsigned long align = offset | iov_iter_alignment(iter); | |
3352 | struct block_device *bdev = inode->i_sb->s_bdev; | |
3353 | ||
3354 | if (align & blocksize_mask) { | |
3355 | if (bdev) | |
3356 | blkbits = blksize_bits(bdev_logical_block_size(bdev)); | |
3357 | blocksize_mask = (1 << blkbits) - 1; | |
3358 | if (align & blocksize_mask) | |
3359 | return -EINVAL; | |
3360 | return 1; | |
3361 | } | |
944fcfc1 JK |
3362 | return 0; |
3363 | } | |
3364 | ||
02b16d0a CY |
3365 | static void f2fs_dio_end_io(struct bio *bio) |
3366 | { | |
3367 | struct f2fs_private_dio *dio = bio->bi_private; | |
3368 | ||
3369 | dec_page_count(F2FS_I_SB(dio->inode), | |
3370 | dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
3371 | ||
3372 | bio->bi_private = dio->orig_private; | |
3373 | bio->bi_end_io = dio->orig_end_io; | |
3374 | ||
5222595d | 3375 | kvfree(dio); |
02b16d0a CY |
3376 | |
3377 | bio_endio(bio); | |
3378 | } | |
3379 | ||
3380 | static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode, | |
3381 | loff_t file_offset) | |
3382 | { | |
3383 | struct f2fs_private_dio *dio; | |
3384 | bool write = (bio_op(bio) == REQ_OP_WRITE); | |
02b16d0a CY |
3385 | |
3386 | dio = f2fs_kzalloc(F2FS_I_SB(inode), | |
3387 | sizeof(struct f2fs_private_dio), GFP_NOFS); | |
8e114038 | 3388 | if (!dio) |
02b16d0a | 3389 | goto out; |
02b16d0a CY |
3390 | |
3391 | dio->inode = inode; | |
3392 | dio->orig_end_io = bio->bi_end_io; | |
3393 | dio->orig_private = bio->bi_private; | |
3394 | dio->write = write; | |
3395 | ||
3396 | bio->bi_end_io = f2fs_dio_end_io; | |
3397 | bio->bi_private = dio; | |
3398 | ||
3399 | inc_page_count(F2FS_I_SB(inode), | |
3400 | write ? F2FS_DIO_WRITE : F2FS_DIO_READ); | |
3401 | ||
3402 | submit_bio(bio); | |
3403 | return; | |
3404 | out: | |
3405 | bio->bi_status = BLK_STS_IOERR; | |
3406 | bio_endio(bio); | |
3407 | } | |
3408 | ||
c8b8e32d | 3409 | static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) |
eb47b800 | 3410 | { |
b439b103 | 3411 | struct address_space *mapping = iocb->ki_filp->f_mapping; |
3aab8f82 | 3412 | struct inode *inode = mapping->host; |
0cdd3195 | 3413 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f847c699 | 3414 | struct f2fs_inode_info *fi = F2FS_I(inode); |
3aab8f82 | 3415 | size_t count = iov_iter_count(iter); |
c8b8e32d | 3416 | loff_t offset = iocb->ki_pos; |
82e0a5aa | 3417 | int rw = iov_iter_rw(iter); |
3aab8f82 | 3418 | int err; |
0cdd3195 | 3419 | enum rw_hint hint = iocb->ki_hint; |
63189b78 | 3420 | int whint_mode = F2FS_OPTION(sbi).whint_mode; |
f847c699 | 3421 | bool do_opu; |
944fcfc1 | 3422 | |
b439b103 | 3423 | err = check_direct_IO(inode, iter, offset); |
b9d777b8 | 3424 | if (err) |
8a56dd96 | 3425 | return err < 0 ? err : 0; |
9ffe0fb5 | 3426 | |
f847c699 | 3427 | if (f2fs_force_buffered_io(inode, iocb, iter)) |
36abef4e | 3428 | return 0; |
fcc85a4d | 3429 | |
f847c699 CY |
3430 | do_opu = allow_outplace_dio(inode, iocb, iter); |
3431 | ||
5302fb00 | 3432 | trace_f2fs_direct_IO_enter(inode, offset, count, rw); |
70407fad | 3433 | |
0cdd3195 HL |
3434 | if (rw == WRITE && whint_mode == WHINT_MODE_OFF) |
3435 | iocb->ki_hint = WRITE_LIFE_NOT_SET; | |
3436 | ||
f847c699 CY |
3437 | if (iocb->ki_flags & IOCB_NOWAIT) { |
3438 | if (!down_read_trylock(&fi->i_gc_rwsem[rw])) { | |
3439 | iocb->ki_hint = hint; | |
3440 | err = -EAGAIN; | |
3441 | goto out; | |
3442 | } | |
3443 | if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) { | |
3444 | up_read(&fi->i_gc_rwsem[rw]); | |
b91050a8 HL |
3445 | iocb->ki_hint = hint; |
3446 | err = -EAGAIN; | |
3447 | goto out; | |
3448 | } | |
f847c699 CY |
3449 | } else { |
3450 | down_read(&fi->i_gc_rwsem[rw]); | |
3451 | if (do_opu) | |
3452 | down_read(&fi->i_gc_rwsem[READ]); | |
b91050a8 HL |
3453 | } |
3454 | ||
02b16d0a | 3455 | err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, |
f9d6d059 CY |
3456 | iter, rw == WRITE ? get_data_block_dio_write : |
3457 | get_data_block_dio, NULL, f2fs_dio_submit_bio, | |
02b16d0a | 3458 | DIO_LOCKING | DIO_SKIP_HOLES); |
f847c699 CY |
3459 | |
3460 | if (do_opu) | |
3461 | up_read(&fi->i_gc_rwsem[READ]); | |
3462 | ||
3463 | up_read(&fi->i_gc_rwsem[rw]); | |
82e0a5aa CY |
3464 | |
3465 | if (rw == WRITE) { | |
0cdd3195 HL |
3466 | if (whint_mode == WHINT_MODE_OFF) |
3467 | iocb->ki_hint = hint; | |
b0af6d49 CY |
3468 | if (err > 0) { |
3469 | f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO, | |
3470 | err); | |
f847c699 CY |
3471 | if (!do_opu) |
3472 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
b0af6d49 | 3473 | } else if (err < 0) { |
6bfc4919 | 3474 | f2fs_write_failed(mapping, offset + count); |
b0af6d49 | 3475 | } |
6bfc4919 | 3476 | } |
70407fad | 3477 | |
b91050a8 | 3478 | out: |
5302fb00 | 3479 | trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); |
70407fad | 3480 | |
3aab8f82 | 3481 | return err; |
eb47b800 JK |
3482 | } |
3483 | ||
487261f3 CY |
3484 | void f2fs_invalidate_page(struct page *page, unsigned int offset, |
3485 | unsigned int length) | |
eb47b800 JK |
3486 | { |
3487 | struct inode *inode = page->mapping->host; | |
487261f3 | 3488 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 3489 | |
487261f3 | 3490 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
09cbfeaf | 3491 | (offset % PAGE_SIZE || length != PAGE_SIZE)) |
a7ffdbe2 JK |
3492 | return; |
3493 | ||
487261f3 | 3494 | if (PageDirty(page)) { |
933439c8 | 3495 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 3496 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 3497 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 3498 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 3499 | } else { |
487261f3 | 3500 | inode_dec_dirty_pages(inode); |
4d57b86d | 3501 | f2fs_remove_dirty_inode(inode); |
933439c8 | 3502 | } |
487261f3 | 3503 | } |
decd36b6 | 3504 | |
2baf0781 CY |
3505 | clear_cold_data(page); |
3506 | ||
decd36b6 | 3507 | if (IS_ATOMIC_WRITTEN_PAGE(page)) |
4d57b86d | 3508 | return f2fs_drop_inmem_page(inode, page); |
decd36b6 | 3509 | |
240a5915 | 3510 | f2fs_clear_page_private(page); |
eb47b800 JK |
3511 | } |
3512 | ||
487261f3 | 3513 | int f2fs_release_page(struct page *page, gfp_t wait) |
eb47b800 | 3514 | { |
f68daeeb JK |
3515 | /* If this is dirty page, keep PagePrivate */ |
3516 | if (PageDirty(page)) | |
3517 | return 0; | |
3518 | ||
decd36b6 CY |
3519 | /* This is atomic written page, keep Private */ |
3520 | if (IS_ATOMIC_WRITTEN_PAGE(page)) | |
3521 | return 0; | |
3522 | ||
2baf0781 | 3523 | clear_cold_data(page); |
240a5915 | 3524 | f2fs_clear_page_private(page); |
c3850aa1 | 3525 | return 1; |
eb47b800 JK |
3526 | } |
3527 | ||
3528 | static int f2fs_set_data_page_dirty(struct page *page) | |
3529 | { | |
4969c06a | 3530 | struct inode *inode = page_file_mapping(page)->host; |
eb47b800 | 3531 | |
26c6b887 JK |
3532 | trace_f2fs_set_page_dirty(page, DATA); |
3533 | ||
237c0790 JK |
3534 | if (!PageUptodate(page)) |
3535 | SetPageUptodate(page); | |
4969c06a JK |
3536 | if (PageSwapCache(page)) |
3537 | return __set_page_dirty_nobuffers(page); | |
34ba94ba | 3538 | |
5fe45743 | 3539 | if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) { |
decd36b6 | 3540 | if (!IS_ATOMIC_WRITTEN_PAGE(page)) { |
4d57b86d | 3541 | f2fs_register_inmem_page(inode, page); |
decd36b6 CY |
3542 | return 1; |
3543 | } | |
3544 | /* | |
3545 | * Previously, this page has been registered, we just | |
3546 | * return here. | |
3547 | */ | |
3548 | return 0; | |
34ba94ba JK |
3549 | } |
3550 | ||
eb47b800 | 3551 | if (!PageDirty(page)) { |
b87078ad | 3552 | __set_page_dirty_nobuffers(page); |
4d57b86d | 3553 | f2fs_update_dirty_page(inode, page); |
eb47b800 JK |
3554 | return 1; |
3555 | } | |
3556 | return 0; | |
3557 | } | |
3558 | ||
c01e54b7 JK |
3559 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
3560 | { | |
454ae7e5 CY |
3561 | struct inode *inode = mapping->host; |
3562 | ||
1d373a0e JK |
3563 | if (f2fs_has_inline_data(inode)) |
3564 | return 0; | |
3565 | ||
3566 | /* make sure allocating whole blocks */ | |
3567 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
3568 | filemap_write_and_wait(mapping); | |
3569 | ||
e2b4e2bc | 3570 | return generic_block_bmap(mapping, block, get_data_block_bmap); |
429511cd CY |
3571 | } |
3572 | ||
5b7a487c WG |
3573 | #ifdef CONFIG_MIGRATION |
3574 | #include <linux/migrate.h> | |
3575 | ||
3576 | int f2fs_migrate_page(struct address_space *mapping, | |
3577 | struct page *newpage, struct page *page, enum migrate_mode mode) | |
3578 | { | |
3579 | int rc, extra_count; | |
3580 | struct f2fs_inode_info *fi = F2FS_I(mapping->host); | |
3581 | bool atomic_written = IS_ATOMIC_WRITTEN_PAGE(page); | |
3582 | ||
3583 | BUG_ON(PageWriteback(page)); | |
3584 | ||
3585 | /* migrating an atomic written page is safe with the inmem_lock hold */ | |
ff1048e7 JK |
3586 | if (atomic_written) { |
3587 | if (mode != MIGRATE_SYNC) | |
3588 | return -EBUSY; | |
3589 | if (!mutex_trylock(&fi->inmem_lock)) | |
3590 | return -EAGAIN; | |
3591 | } | |
5b7a487c | 3592 | |
240a5915 CY |
3593 | /* one extra reference was held for atomic_write page */ |
3594 | extra_count = atomic_written ? 1 : 0; | |
5b7a487c | 3595 | rc = migrate_page_move_mapping(mapping, newpage, |
37109694 | 3596 | page, extra_count); |
5b7a487c WG |
3597 | if (rc != MIGRATEPAGE_SUCCESS) { |
3598 | if (atomic_written) | |
3599 | mutex_unlock(&fi->inmem_lock); | |
3600 | return rc; | |
3601 | } | |
3602 | ||
3603 | if (atomic_written) { | |
3604 | struct inmem_pages *cur; | |
3605 | list_for_each_entry(cur, &fi->inmem_pages, list) | |
3606 | if (cur->page == page) { | |
3607 | cur->page = newpage; | |
3608 | break; | |
3609 | } | |
3610 | mutex_unlock(&fi->inmem_lock); | |
3611 | put_page(page); | |
3612 | get_page(newpage); | |
3613 | } | |
3614 | ||
240a5915 CY |
3615 | if (PagePrivate(page)) { |
3616 | f2fs_set_page_private(newpage, page_private(page)); | |
3617 | f2fs_clear_page_private(page); | |
3618 | } | |
5b7a487c | 3619 | |
2916ecc0 JG |
3620 | if (mode != MIGRATE_SYNC_NO_COPY) |
3621 | migrate_page_copy(newpage, page); | |
3622 | else | |
3623 | migrate_page_states(newpage, page); | |
5b7a487c WG |
3624 | |
3625 | return MIGRATEPAGE_SUCCESS; | |
3626 | } | |
3627 | #endif | |
3628 | ||
4969c06a JK |
3629 | #ifdef CONFIG_SWAP |
3630 | /* Copied from generic_swapfile_activate() to check any holes */ | |
3e5e479a CY |
3631 | static int check_swap_activate(struct swap_info_struct *sis, |
3632 | struct file *swap_file, sector_t *span) | |
4969c06a JK |
3633 | { |
3634 | struct address_space *mapping = swap_file->f_mapping; | |
3635 | struct inode *inode = mapping->host; | |
3636 | unsigned blocks_per_page; | |
3637 | unsigned long page_no; | |
3638 | unsigned blkbits; | |
3639 | sector_t probe_block; | |
3640 | sector_t last_block; | |
3641 | sector_t lowest_block = -1; | |
3642 | sector_t highest_block = 0; | |
3e5e479a CY |
3643 | int nr_extents = 0; |
3644 | int ret; | |
4969c06a JK |
3645 | |
3646 | blkbits = inode->i_blkbits; | |
3647 | blocks_per_page = PAGE_SIZE >> blkbits; | |
3648 | ||
3649 | /* | |
3650 | * Map all the blocks into the extent list. This code doesn't try | |
3651 | * to be very smart. | |
3652 | */ | |
3653 | probe_block = 0; | |
3654 | page_no = 0; | |
3655 | last_block = i_size_read(inode) >> blkbits; | |
3e5e479a CY |
3656 | while ((probe_block + blocks_per_page) <= last_block && |
3657 | page_no < sis->max) { | |
4969c06a JK |
3658 | unsigned block_in_page; |
3659 | sector_t first_block; | |
30460e1e CM |
3660 | sector_t block = 0; |
3661 | int err = 0; | |
4969c06a JK |
3662 | |
3663 | cond_resched(); | |
3664 | ||
30460e1e CM |
3665 | block = probe_block; |
3666 | err = bmap(inode, &block); | |
3667 | if (err || !block) | |
4969c06a | 3668 | goto bad_bmap; |
30460e1e | 3669 | first_block = block; |
4969c06a JK |
3670 | |
3671 | /* | |
3672 | * It must be PAGE_SIZE aligned on-disk | |
3673 | */ | |
3674 | if (first_block & (blocks_per_page - 1)) { | |
3675 | probe_block++; | |
3676 | goto reprobe; | |
3677 | } | |
3678 | ||
3679 | for (block_in_page = 1; block_in_page < blocks_per_page; | |
3680 | block_in_page++) { | |
4969c06a | 3681 | |
30460e1e CM |
3682 | block = probe_block + block_in_page; |
3683 | err = bmap(inode, &block); | |
3684 | ||
3685 | if (err || !block) | |
4969c06a | 3686 | goto bad_bmap; |
30460e1e | 3687 | |
4969c06a JK |
3688 | if (block != first_block + block_in_page) { |
3689 | /* Discontiguity */ | |
3690 | probe_block++; | |
3691 | goto reprobe; | |
3692 | } | |
3693 | } | |
3694 | ||
3695 | first_block >>= (PAGE_SHIFT - blkbits); | |
3696 | if (page_no) { /* exclude the header page */ | |
3697 | if (first_block < lowest_block) | |
3698 | lowest_block = first_block; | |
3699 | if (first_block > highest_block) | |
3700 | highest_block = first_block; | |
3701 | } | |
3702 | ||
3e5e479a CY |
3703 | /* |
3704 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3705 | */ | |
3706 | ret = add_swap_extent(sis, page_no, 1, first_block); | |
3707 | if (ret < 0) | |
3708 | goto out; | |
3709 | nr_extents += ret; | |
4969c06a JK |
3710 | page_no++; |
3711 | probe_block += blocks_per_page; | |
3712 | reprobe: | |
3713 | continue; | |
3714 | } | |
3e5e479a CY |
3715 | ret = nr_extents; |
3716 | *span = 1 + highest_block - lowest_block; | |
3717 | if (page_no == 0) | |
3718 | page_no = 1; /* force Empty message */ | |
3719 | sis->max = page_no; | |
3720 | sis->pages = page_no - 1; | |
3721 | sis->highest_bit = page_no - 1; | |
3722 | out: | |
3723 | return ret; | |
4969c06a JK |
3724 | bad_bmap: |
3725 | pr_err("swapon: swapfile has holes\n"); | |
3726 | return -EINVAL; | |
3727 | } | |
3728 | ||
3729 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3730 | sector_t *span) | |
3731 | { | |
3732 | struct inode *inode = file_inode(file); | |
3733 | int ret; | |
3734 | ||
3735 | if (!S_ISREG(inode->i_mode)) | |
3736 | return -EINVAL; | |
3737 | ||
3738 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3739 | return -EROFS; | |
3740 | ||
3741 | ret = f2fs_convert_inline_inode(inode); | |
3742 | if (ret) | |
3743 | return ret; | |
3744 | ||
4c8ff709 CY |
3745 | if (f2fs_disable_compressed_file(inode)) |
3746 | return -EINVAL; | |
3747 | ||
3e5e479a CY |
3748 | ret = check_swap_activate(sis, file, span); |
3749 | if (ret < 0) | |
4969c06a JK |
3750 | return ret; |
3751 | ||
3752 | set_inode_flag(inode, FI_PIN_FILE); | |
3753 | f2fs_precache_extents(inode); | |
3754 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
3e5e479a | 3755 | return ret; |
4969c06a JK |
3756 | } |
3757 | ||
3758 | static void f2fs_swap_deactivate(struct file *file) | |
3759 | { | |
3760 | struct inode *inode = file_inode(file); | |
3761 | ||
3762 | clear_inode_flag(inode, FI_PIN_FILE); | |
3763 | } | |
3764 | #else | |
3765 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3766 | sector_t *span) | |
3767 | { | |
3768 | return -EOPNOTSUPP; | |
3769 | } | |
3770 | ||
3771 | static void f2fs_swap_deactivate(struct file *file) | |
3772 | { | |
3773 | } | |
3774 | #endif | |
3775 | ||
eb47b800 JK |
3776 | const struct address_space_operations f2fs_dblock_aops = { |
3777 | .readpage = f2fs_read_data_page, | |
3778 | .readpages = f2fs_read_data_pages, | |
3779 | .writepage = f2fs_write_data_page, | |
3780 | .writepages = f2fs_write_data_pages, | |
3781 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 3782 | .write_end = f2fs_write_end, |
eb47b800 | 3783 | .set_page_dirty = f2fs_set_data_page_dirty, |
487261f3 CY |
3784 | .invalidatepage = f2fs_invalidate_page, |
3785 | .releasepage = f2fs_release_page, | |
eb47b800 | 3786 | .direct_IO = f2fs_direct_IO, |
c01e54b7 | 3787 | .bmap = f2fs_bmap, |
4969c06a JK |
3788 | .swap_activate = f2fs_swap_activate, |
3789 | .swap_deactivate = f2fs_swap_deactivate, | |
5b7a487c WG |
3790 | #ifdef CONFIG_MIGRATION |
3791 | .migratepage = f2fs_migrate_page, | |
3792 | #endif | |
eb47b800 | 3793 | }; |
6dbb1796 | 3794 | |
5ec2d99d | 3795 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
3796 | { |
3797 | struct address_space *mapping = page_mapping(page); | |
3798 | unsigned long flags; | |
3799 | ||
3800 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 3801 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
3802 | PAGECACHE_TAG_DIRTY); |
3803 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
3804 | } | |
3805 | ||
6dbb1796 EB |
3806 | int __init f2fs_init_post_read_processing(void) |
3807 | { | |
95ae251f EB |
3808 | bio_post_read_ctx_cache = |
3809 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
3810 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
3811 | if (!bio_post_read_ctx_cache) |
3812 | goto fail; | |
3813 | bio_post_read_ctx_pool = | |
3814 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
3815 | bio_post_read_ctx_cache); | |
3816 | if (!bio_post_read_ctx_pool) | |
3817 | goto fail_free_cache; | |
3818 | return 0; | |
3819 | ||
3820 | fail_free_cache: | |
3821 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3822 | fail: | |
3823 | return -ENOMEM; | |
3824 | } | |
3825 | ||
0b20fcec | 3826 | void f2fs_destroy_post_read_processing(void) |
6dbb1796 EB |
3827 | { |
3828 | mempool_destroy(bio_post_read_ctx_pool); | |
3829 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
3830 | } | |
0b20fcec | 3831 | |
4c8ff709 CY |
3832 | int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) |
3833 | { | |
3834 | if (!f2fs_sb_has_encrypt(sbi) && | |
3835 | !f2fs_sb_has_verity(sbi) && | |
3836 | !f2fs_sb_has_compression(sbi)) | |
3837 | return 0; | |
3838 | ||
3839 | sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", | |
3840 | WQ_UNBOUND | WQ_HIGHPRI, | |
3841 | num_online_cpus()); | |
3842 | if (!sbi->post_read_wq) | |
3843 | return -ENOMEM; | |
3844 | return 0; | |
3845 | } | |
3846 | ||
3847 | void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) | |
3848 | { | |
3849 | if (sbi->post_read_wq) | |
3850 | destroy_workqueue(sbi->post_read_wq); | |
3851 | } | |
3852 | ||
0b20fcec CY |
3853 | int __init f2fs_init_bio_entry_cache(void) |
3854 | { | |
3855 | bio_entry_slab = f2fs_kmem_cache_create("bio_entry_slab", | |
3856 | sizeof(struct bio_entry)); | |
3857 | if (!bio_entry_slab) | |
3858 | return -ENOMEM; | |
3859 | return 0; | |
3860 | } | |
3861 | ||
f543805f | 3862 | void f2fs_destroy_bio_entry_cache(void) |
0b20fcec CY |
3863 | { |
3864 | kmem_cache_destroy(bio_entry_slab); | |
3865 | } |