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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> | |
4034247a | 11 | #include <linux/sched/mm.h> |
eb47b800 JK |
12 | #include <linux/mpage.h> |
13 | #include <linux/writeback.h> | |
8f46dcae | 14 | #include <linux/pagevec.h> |
eb47b800 JK |
15 | #include <linux/blkdev.h> |
16 | #include <linux/bio.h> | |
27aacd28 | 17 | #include <linux/blk-crypto.h> |
4969c06a | 18 | #include <linux/swap.h> |
690e4a3e | 19 | #include <linux/prefetch.h> |
e2e40f2c | 20 | #include <linux/uio.h> |
174cd4b1 | 21 | #include <linux/sched/signal.h> |
10c5db28 | 22 | #include <linux/fiemap.h> |
1517c1a7 | 23 | #include <linux/iomap.h> |
eb47b800 JK |
24 | |
25 | #include "f2fs.h" | |
26 | #include "node.h" | |
27 | #include "segment.h" | |
52118743 | 28 | #include "iostat.h" |
848753aa | 29 | #include <trace/events/f2fs.h> |
eb47b800 | 30 | |
6dbb1796 EB |
31 | #define NUM_PREALLOC_POST_READ_CTXS 128 |
32 | ||
33 | static struct kmem_cache *bio_post_read_ctx_cache; | |
0b20fcec | 34 | static struct kmem_cache *bio_entry_slab; |
6dbb1796 | 35 | static mempool_t *bio_post_read_ctx_pool; |
f543805f CY |
36 | static struct bio_set f2fs_bioset; |
37 | ||
38 | #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE | |
39 | ||
40 | int __init f2fs_init_bioset(void) | |
41 | { | |
870af777 YL |
42 | return bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, |
43 | 0, BIOSET_NEED_BVECS); | |
f543805f CY |
44 | } |
45 | ||
46 | void f2fs_destroy_bioset(void) | |
47 | { | |
48 | bioset_exit(&f2fs_bioset); | |
49 | } | |
50 | ||
36951b38 CY |
51 | static bool __is_cp_guaranteed(struct page *page) |
52 | { | |
53 | struct address_space *mapping = page->mapping; | |
54 | struct inode *inode; | |
55 | struct f2fs_sb_info *sbi; | |
56 | ||
57 | if (!mapping) | |
58 | return false; | |
59 | ||
60 | inode = mapping->host; | |
61 | sbi = F2FS_I_SB(inode); | |
62 | ||
63 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
a87aff1d | 64 | inode->i_ino == F2FS_NODE_INO(sbi) || |
b763f3be CY |
65 | S_ISDIR(inode->i_mode)) |
66 | return true; | |
67 | ||
68 | if (f2fs_is_compressed_page(page)) | |
69 | return false; | |
3db1de0e | 70 | if ((S_ISREG(inode->i_mode) && IS_NOQUOTA(inode)) || |
b763f3be | 71 | page_private_gcing(page)) |
36951b38 CY |
72 | return true; |
73 | return false; | |
74 | } | |
75 | ||
5f9abab4 JK |
76 | static enum count_type __read_io_type(struct page *page) |
77 | { | |
4969c06a | 78 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
79 | |
80 | if (mapping) { | |
81 | struct inode *inode = mapping->host; | |
82 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
83 | ||
84 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
85 | return F2FS_RD_META; | |
86 | ||
87 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
88 | return F2FS_RD_NODE; | |
89 | } | |
90 | return F2FS_RD_DATA; | |
91 | } | |
92 | ||
6dbb1796 EB |
93 | /* postprocessing steps for read bios */ |
94 | enum bio_post_read_step { | |
7f59b277 EB |
95 | #ifdef CONFIG_FS_ENCRYPTION |
96 | STEP_DECRYPT = 1 << 0, | |
97 | #else | |
98 | STEP_DECRYPT = 0, /* compile out the decryption-related code */ | |
99 | #endif | |
100 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
101 | STEP_DECOMPRESS = 1 << 1, | |
102 | #else | |
103 | STEP_DECOMPRESS = 0, /* compile out the decompression-related code */ | |
104 | #endif | |
105 | #ifdef CONFIG_FS_VERITY | |
106 | STEP_VERITY = 1 << 2, | |
107 | #else | |
108 | STEP_VERITY = 0, /* compile out the verity-related code */ | |
109 | #endif | |
6dbb1796 EB |
110 | }; |
111 | ||
112 | struct bio_post_read_ctx { | |
113 | struct bio *bio; | |
4c8ff709 | 114 | struct f2fs_sb_info *sbi; |
6dbb1796 | 115 | struct work_struct work; |
6dbb1796 | 116 | unsigned int enabled_steps; |
98dc08ba EB |
117 | /* |
118 | * decompression_attempted keeps track of whether | |
119 | * f2fs_end_read_compressed_page() has been called on the pages in the | |
120 | * bio that belong to a compressed cluster yet. | |
121 | */ | |
122 | bool decompression_attempted; | |
4931e0c9 | 123 | block_t fs_blkaddr; |
6dbb1796 EB |
124 | }; |
125 | ||
98dc08ba EB |
126 | /* |
127 | * Update and unlock a bio's pages, and free the bio. | |
128 | * | |
129 | * This marks pages up-to-date only if there was no error in the bio (I/O error, | |
130 | * decryption error, or verity error), as indicated by bio->bi_status. | |
131 | * | |
132 | * "Compressed pages" (pagecache pages backed by a compressed cluster on-disk) | |
133 | * aren't marked up-to-date here, as decompression is done on a per-compression- | |
134 | * cluster basis rather than a per-bio basis. Instead, we only must do two | |
135 | * things for each compressed page here: call f2fs_end_read_compressed_page() | |
136 | * with failed=true if an error occurred before it would have normally gotten | |
137 | * called (i.e., I/O error or decryption error, but *not* verity error), and | |
138 | * release the bio's reference to the decompress_io_ctx of the page's cluster. | |
139 | */ | |
bff139b4 | 140 | static void f2fs_finish_read_bio(struct bio *bio, bool in_task) |
93dfe2ac | 141 | { |
6dbb1796 | 142 | struct bio_vec *bv; |
6dc4f100 | 143 | struct bvec_iter_all iter_all; |
98dc08ba | 144 | struct bio_post_read_ctx *ctx = bio->bi_private; |
93dfe2ac | 145 | |
2b070cfe | 146 | bio_for_each_segment_all(bv, bio, iter_all) { |
7f59b277 | 147 | struct page *page = bv->bv_page; |
6dbb1796 | 148 | |
7f59b277 | 149 | if (f2fs_is_compressed_page(page)) { |
98dc08ba | 150 | if (ctx && !ctx->decompression_attempted) |
bff139b4 DJ |
151 | f2fs_end_read_compressed_page(page, true, 0, |
152 | in_task); | |
153 | f2fs_put_page_dic(page, in_task); | |
4c8ff709 CY |
154 | continue; |
155 | } | |
4c8ff709 | 156 | |
98dc08ba | 157 | if (bio->bi_status) |
6dbb1796 | 158 | ClearPageUptodate(page); |
98dc08ba | 159 | else |
6dbb1796 | 160 | SetPageUptodate(page); |
5f9abab4 | 161 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
162 | unlock_page(page); |
163 | } | |
79bbefb1 | 164 | |
98dc08ba EB |
165 | if (ctx) |
166 | mempool_free(ctx, bio_post_read_ctx_pool); | |
7f59b277 | 167 | bio_put(bio); |
4c8ff709 | 168 | } |
4c8ff709 | 169 | |
7f59b277 | 170 | static void f2fs_verify_bio(struct work_struct *work) |
6dbb1796 EB |
171 | { |
172 | struct bio_post_read_ctx *ctx = | |
173 | container_of(work, struct bio_post_read_ctx, work); | |
644c8c92 | 174 | struct bio *bio = ctx->bio; |
7f59b277 | 175 | bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS); |
644c8c92 EB |
176 | |
177 | /* | |
704528d8 | 178 | * fsverity_verify_bio() may call readahead() again, and while verity |
7f59b277 EB |
179 | * will be disabled for this, decryption and/or decompression may still |
180 | * be needed, resulting in another bio_post_read_ctx being allocated. | |
181 | * So to prevent deadlocks we need to release the current ctx to the | |
182 | * mempool first. This assumes that verity is the last post-read step. | |
644c8c92 EB |
183 | */ |
184 | mempool_free(ctx, bio_post_read_ctx_pool); | |
185 | bio->bi_private = NULL; | |
6dbb1796 | 186 | |
7f59b277 EB |
187 | /* |
188 | * Verify the bio's pages with fs-verity. Exclude compressed pages, | |
189 | * as those were handled separately by f2fs_end_read_compressed_page(). | |
190 | */ | |
191 | if (may_have_compressed_pages) { | |
192 | struct bio_vec *bv; | |
193 | struct bvec_iter_all iter_all; | |
194 | ||
195 | bio_for_each_segment_all(bv, bio, iter_all) { | |
196 | struct page *page = bv->bv_page; | |
197 | ||
198 | if (!f2fs_is_compressed_page(page) && | |
98dc08ba EB |
199 | !fsverity_verify_page(page)) { |
200 | bio->bi_status = BLK_STS_IOERR; | |
201 | break; | |
202 | } | |
7f59b277 EB |
203 | } |
204 | } else { | |
205 | fsverity_verify_bio(bio); | |
4c8ff709 | 206 | } |
6dbb1796 | 207 | |
bff139b4 | 208 | f2fs_finish_read_bio(bio, true); |
6dbb1796 EB |
209 | } |
210 | ||
7f59b277 EB |
211 | /* |
212 | * If the bio's data needs to be verified with fs-verity, then enqueue the | |
213 | * verity work for the bio. Otherwise finish the bio now. | |
214 | * | |
215 | * Note that to avoid deadlocks, the verity work can't be done on the | |
216 | * decryption/decompression workqueue. This is because verifying the data pages | |
217 | * can involve reading verity metadata pages from the file, and these verity | |
218 | * metadata pages may be encrypted and/or compressed. | |
219 | */ | |
bff139b4 | 220 | static void f2fs_verify_and_finish_bio(struct bio *bio, bool in_task) |
95ae251f | 221 | { |
7f59b277 | 222 | struct bio_post_read_ctx *ctx = bio->bi_private; |
4c8ff709 | 223 | |
7f59b277 EB |
224 | if (ctx && (ctx->enabled_steps & STEP_VERITY)) { |
225 | INIT_WORK(&ctx->work, f2fs_verify_bio); | |
4c8ff709 | 226 | fsverity_enqueue_verify_work(&ctx->work); |
7f59b277 | 227 | } else { |
bff139b4 | 228 | f2fs_finish_read_bio(bio, in_task); |
4c8ff709 | 229 | } |
4c8ff709 | 230 | } |
95ae251f | 231 | |
7f59b277 EB |
232 | /* |
233 | * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last | |
234 | * remaining page was read by @ctx->bio. | |
235 | * | |
236 | * Note that a bio may span clusters (even a mix of compressed and uncompressed | |
237 | * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates | |
238 | * that the bio includes at least one compressed page. The actual decompression | |
239 | * is done on a per-cluster basis, not a per-bio basis. | |
240 | */ | |
bff139b4 DJ |
241 | static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx, |
242 | bool in_task) | |
6dbb1796 | 243 | { |
7f59b277 EB |
244 | struct bio_vec *bv; |
245 | struct bvec_iter_all iter_all; | |
246 | bool all_compressed = true; | |
4931e0c9 | 247 | block_t blkaddr = ctx->fs_blkaddr; |
4c8ff709 | 248 | |
7f59b277 EB |
249 | bio_for_each_segment_all(bv, ctx->bio, iter_all) { |
250 | struct page *page = bv->bv_page; | |
4c8ff709 | 251 | |
7f59b277 | 252 | if (f2fs_is_compressed_page(page)) |
14db0b3c EB |
253 | f2fs_end_read_compressed_page(page, false, blkaddr, |
254 | in_task); | |
7f59b277 EB |
255 | else |
256 | all_compressed = false; | |
6ce19aff CY |
257 | |
258 | blkaddr++; | |
6dbb1796 | 259 | } |
4c8ff709 | 260 | |
98dc08ba EB |
261 | ctx->decompression_attempted = true; |
262 | ||
7f59b277 EB |
263 | /* |
264 | * Optimization: if all the bio's pages are compressed, then scheduling | |
265 | * the per-bio verity work is unnecessary, as verity will be fully | |
266 | * handled at the compression cluster level. | |
267 | */ | |
268 | if (all_compressed) | |
269 | ctx->enabled_steps &= ~STEP_VERITY; | |
6dbb1796 EB |
270 | } |
271 | ||
7f59b277 | 272 | static void f2fs_post_read_work(struct work_struct *work) |
6dbb1796 | 273 | { |
7f59b277 EB |
274 | struct bio_post_read_ctx *ctx = |
275 | container_of(work, struct bio_post_read_ctx, work); | |
14db0b3c | 276 | struct bio *bio = ctx->bio; |
7f59b277 | 277 | |
14db0b3c EB |
278 | if ((ctx->enabled_steps & STEP_DECRYPT) && !fscrypt_decrypt_bio(bio)) { |
279 | f2fs_finish_read_bio(bio, true); | |
280 | return; | |
281 | } | |
7f59b277 EB |
282 | |
283 | if (ctx->enabled_steps & STEP_DECOMPRESS) | |
bff139b4 | 284 | f2fs_handle_step_decompress(ctx, true); |
7f59b277 | 285 | |
14db0b3c | 286 | f2fs_verify_and_finish_bio(bio, true); |
6dbb1796 EB |
287 | } |
288 | ||
289 | static void f2fs_read_end_io(struct bio *bio) | |
290 | { | |
c45d6002 | 291 | struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); |
a4b68176 | 292 | struct bio_post_read_ctx *ctx; |
bff139b4 | 293 | bool intask = in_task(); |
a4b68176 DJ |
294 | |
295 | iostat_update_and_unbind_ctx(bio, 0); | |
296 | ctx = bio->bi_private; | |
c45d6002 CY |
297 | |
298 | if (time_to_inject(sbi, FAULT_READ_IO)) { | |
299 | f2fs_show_injection_info(sbi, FAULT_READ_IO); | |
4e4cbee9 | 300 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 301 | } |
8b038c70 | 302 | |
7f59b277 | 303 | if (bio->bi_status) { |
bff139b4 | 304 | f2fs_finish_read_bio(bio, intask); |
6dbb1796 | 305 | return; |
f1e88660 | 306 | } |
6dbb1796 | 307 | |
bff139b4 DJ |
308 | if (ctx) { |
309 | unsigned int enabled_steps = ctx->enabled_steps & | |
310 | (STEP_DECRYPT | STEP_DECOMPRESS); | |
311 | ||
312 | /* | |
313 | * If we have only decompression step between decompression and | |
314 | * decrypt, we don't need post processing for this. | |
315 | */ | |
316 | if (enabled_steps == STEP_DECOMPRESS && | |
317 | !f2fs_low_mem_mode(sbi)) { | |
318 | f2fs_handle_step_decompress(ctx, intask); | |
319 | } else if (enabled_steps) { | |
320 | INIT_WORK(&ctx->work, f2fs_post_read_work); | |
321 | queue_work(ctx->sbi->post_read_wq, &ctx->work); | |
322 | return; | |
323 | } | |
7f59b277 | 324 | } |
bff139b4 DJ |
325 | |
326 | f2fs_verify_and_finish_bio(bio, intask); | |
f1e88660 JK |
327 | } |
328 | ||
4246a0b6 | 329 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 330 | { |
a4b68176 | 331 | struct f2fs_sb_info *sbi; |
f568849e | 332 | struct bio_vec *bvec; |
6dc4f100 | 333 | struct bvec_iter_all iter_all; |
93dfe2ac | 334 | |
a4b68176 DJ |
335 | iostat_update_and_unbind_ctx(bio, 1); |
336 | sbi = bio->bi_private; | |
337 | ||
6f5c2ed0 | 338 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
c45d6002 | 339 | f2fs_show_injection_info(sbi, FAULT_WRITE_IO); |
6f5c2ed0 CY |
340 | bio->bi_status = BLK_STS_IOERR; |
341 | } | |
342 | ||
2b070cfe | 343 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 344 | struct page *page = bvec->bv_page; |
36951b38 | 345 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 346 | |
b763f3be CY |
347 | if (page_private_dummy(page)) { |
348 | clear_page_private_dummy(page); | |
0a595eba JK |
349 | unlock_page(page); |
350 | mempool_free(page, sbi->write_io_dummy); | |
351 | ||
4e4cbee9 | 352 | if (unlikely(bio->bi_status)) |
a9cfee0e CY |
353 | f2fs_stop_checkpoint(sbi, true, |
354 | STOP_CP_REASON_WRITE_FAIL); | |
0a595eba JK |
355 | continue; |
356 | } | |
357 | ||
d2d0727b | 358 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 359 | |
4c8ff709 CY |
360 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
361 | if (f2fs_is_compressed_page(page)) { | |
362 | f2fs_compress_write_end_io(bio, page); | |
363 | continue; | |
364 | } | |
365 | #endif | |
366 | ||
4e4cbee9 | 367 | if (unlikely(bio->bi_status)) { |
5114a97a | 368 | mapping_set_error(page->mapping, -EIO); |
b1ca321d | 369 | if (type == F2FS_WB_CP_DATA) |
a9cfee0e CY |
370 | f2fs_stop_checkpoint(sbi, true, |
371 | STOP_CP_REASON_WRITE_FAIL); | |
93dfe2ac | 372 | } |
7dff55d2 YH |
373 | |
374 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
375 | page->index != nid_of_node(page)); | |
376 | ||
36951b38 | 377 | dec_page_count(sbi, type); |
50fa53ec CY |
378 | if (f2fs_in_warm_node_list(sbi, page)) |
379 | f2fs_del_fsync_node_entry(sbi, page); | |
b763f3be | 380 | clear_page_private_gcing(page); |
93dfe2ac | 381 | end_page_writeback(page); |
f568849e | 382 | } |
36951b38 | 383 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 384 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
385 | wake_up(&sbi->cp_wait); |
386 | ||
387 | bio_put(bio); | |
388 | } | |
389 | ||
3c62be17 | 390 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
5189810a | 391 | block_t blk_addr, sector_t *sector) |
3c62be17 JK |
392 | { |
393 | struct block_device *bdev = sbi->sb->s_bdev; | |
394 | int i; | |
395 | ||
0916878d DLM |
396 | if (f2fs_is_multi_device(sbi)) { |
397 | for (i = 0; i < sbi->s_ndevs; i++) { | |
398 | if (FDEV(i).start_blk <= blk_addr && | |
399 | FDEV(i).end_blk >= blk_addr) { | |
400 | blk_addr -= FDEV(i).start_blk; | |
401 | bdev = FDEV(i).bdev; | |
402 | break; | |
403 | } | |
3c62be17 JK |
404 | } |
405 | } | |
5189810a CH |
406 | |
407 | if (sector) | |
408 | *sector = SECTOR_FROM_BLOCK(blk_addr); | |
3c62be17 JK |
409 | return bdev; |
410 | } | |
411 | ||
412 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
413 | { | |
414 | int i; | |
415 | ||
0916878d DLM |
416 | if (!f2fs_is_multi_device(sbi)) |
417 | return 0; | |
418 | ||
3c62be17 JK |
419 | for (i = 0; i < sbi->s_ndevs; i++) |
420 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
421 | return i; | |
422 | return 0; | |
423 | } | |
424 | ||
7649c873 | 425 | static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio) |
64bf0eef CH |
426 | { |
427 | unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1; | |
0adc2ab0 | 428 | unsigned int fua_flag, meta_flag, io_flag; |
7649c873 | 429 | blk_opf_t op_flags = 0; |
0adc2ab0 JK |
430 | |
431 | if (fio->op != REQ_OP_WRITE) | |
432 | return 0; | |
433 | if (fio->type == DATA) | |
434 | io_flag = fio->sbi->data_io_flag; | |
435 | else if (fio->type == NODE) | |
436 | io_flag = fio->sbi->node_io_flag; | |
437 | else | |
438 | return 0; | |
439 | ||
440 | fua_flag = io_flag & temp_mask; | |
441 | meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask; | |
64bf0eef CH |
442 | |
443 | /* | |
444 | * data/node io flag bits per temp: | |
445 | * REQ_META | REQ_FUA | | |
446 | * 5 | 4 | 3 | 2 | 1 | 0 | | |
447 | * Cold | Warm | Hot | Cold | Warm | Hot | | |
448 | */ | |
449 | if ((1 << fio->temp) & meta_flag) | |
0adc2ab0 | 450 | op_flags |= REQ_META; |
64bf0eef | 451 | if ((1 << fio->temp) & fua_flag) |
0adc2ab0 JK |
452 | op_flags |= REQ_FUA; |
453 | return op_flags; | |
64bf0eef CH |
454 | } |
455 | ||
b757f6ed | 456 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 457 | { |
b757f6ed | 458 | struct f2fs_sb_info *sbi = fio->sbi; |
5189810a CH |
459 | struct block_device *bdev; |
460 | sector_t sector; | |
940a6d34 GZ |
461 | struct bio *bio; |
462 | ||
5189810a | 463 | bdev = f2fs_target_device(sbi, fio->new_blkaddr, §or); |
0adc2ab0 JK |
464 | bio = bio_alloc_bioset(bdev, npages, |
465 | fio->op | fio->op_flags | f2fs_io_flags(fio), | |
466 | GFP_NOIO, &f2fs_bioset); | |
5189810a | 467 | bio->bi_iter.bi_sector = sector; |
b757f6ed | 468 | if (is_read_io(fio->op)) { |
0cdd3195 HL |
469 | bio->bi_end_io = f2fs_read_end_io; |
470 | bio->bi_private = NULL; | |
471 | } else { | |
472 | bio->bi_end_io = f2fs_write_end_io; | |
473 | bio->bi_private = sbi; | |
0cdd3195 | 474 | } |
a4b68176 DJ |
475 | iostat_alloc_and_bind_ctx(sbi, bio, NULL); |
476 | ||
b757f6ed CY |
477 | if (fio->io_wbc) |
478 | wbc_init_bio(fio->io_wbc, bio); | |
940a6d34 GZ |
479 | |
480 | return bio; | |
481 | } | |
482 | ||
27aacd28 ST |
483 | static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode, |
484 | pgoff_t first_idx, | |
485 | const struct f2fs_io_info *fio, | |
486 | gfp_t gfp_mask) | |
487 | { | |
488 | /* | |
489 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
490 | * read/write raw data without encryption. | |
491 | */ | |
492 | if (!fio || !fio->encrypted_page) | |
493 | fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask); | |
494 | } | |
495 | ||
496 | static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode, | |
497 | pgoff_t next_idx, | |
498 | const struct f2fs_io_info *fio) | |
499 | { | |
500 | /* | |
501 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
502 | * read/write raw data without encryption. | |
503 | */ | |
504 | if (fio && fio->encrypted_page) | |
505 | return !bio_has_crypt_ctx(bio); | |
506 | ||
507 | return fscrypt_mergeable_bio(bio, inode, next_idx); | |
508 | } | |
509 | ||
4fc29c1a LT |
510 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
511 | struct bio *bio, enum page_type type) | |
f5730184 | 512 | { |
4fc29c1a | 513 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
514 | unsigned int start; |
515 | ||
0a595eba JK |
516 | if (type != DATA && type != NODE) |
517 | goto submit_io; | |
518 | ||
b0332a0f | 519 | if (f2fs_lfs_mode(sbi) && current->plug) |
3bb09a0e TY |
520 | blk_finish_plug(current->plug); |
521 | ||
39f71b7e | 522 | if (!F2FS_IO_ALIGNED(sbi)) |
8223ecc4 CY |
523 | goto submit_io; |
524 | ||
0a595eba JK |
525 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
526 | start %= F2FS_IO_SIZE(sbi); | |
527 | ||
528 | if (start == 0) | |
529 | goto submit_io; | |
530 | ||
531 | /* fill dummy pages */ | |
532 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
533 | struct page *page = | |
534 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 535 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
536 | f2fs_bug_on(sbi, !page); |
537 | ||
0a595eba | 538 | lock_page(page); |
b763f3be CY |
539 | |
540 | zero_user_segment(page, 0, PAGE_SIZE); | |
541 | set_page_private_dummy(page); | |
542 | ||
0a595eba JK |
543 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) |
544 | f2fs_bug_on(sbi, 1); | |
545 | } | |
546 | /* | |
547 | * In the NODE case, we lose next block address chain. So, we | |
548 | * need to do checkpoint in f2fs_sync_file. | |
549 | */ | |
550 | if (type == NODE) | |
551 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 552 | } |
0a595eba | 553 | submit_io: |
554b5125 JK |
554 | if (is_read_io(bio_op(bio))) |
555 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
556 | else | |
557 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
a4b68176 DJ |
558 | |
559 | iostat_update_submit_ctx(bio, type); | |
4e49ea4a | 560 | submit_bio(bio); |
f5730184 JK |
561 | } |
562 | ||
4c8ff709 CY |
563 | void f2fs_submit_bio(struct f2fs_sb_info *sbi, |
564 | struct bio *bio, enum page_type type) | |
565 | { | |
566 | __submit_bio(sbi, bio, type); | |
567 | } | |
568 | ||
458e6197 | 569 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 570 | { |
458e6197 | 571 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
572 | |
573 | if (!io->bio) | |
574 | return; | |
575 | ||
04d328de | 576 | if (is_read_io(fio->op)) |
554b5125 | 577 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 578 | else |
554b5125 | 579 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 580 | |
4fc29c1a | 581 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
582 | io->bio = NULL; |
583 | } | |
584 | ||
8648de2c | 585 | static bool __has_merged_page(struct bio *bio, struct inode *inode, |
bab475c5 | 586 | struct page *page, nid_t ino) |
0fd785eb | 587 | { |
0fd785eb | 588 | struct bio_vec *bvec; |
6dc4f100 | 589 | struct bvec_iter_all iter_all; |
0fd785eb | 590 | |
8648de2c | 591 | if (!bio) |
0fd785eb | 592 | return false; |
0c3a5797 | 593 | |
bab475c5 | 594 | if (!inode && !page && !ino) |
0c3a5797 | 595 | return true; |
0fd785eb | 596 | |
8648de2c | 597 | bio_for_each_segment_all(bvec, bio, iter_all) { |
4c8ff709 | 598 | struct page *target = bvec->bv_page; |
0fd785eb | 599 | |
4c8ff709 | 600 | if (fscrypt_is_bounce_page(target)) { |
d2d0727b | 601 | target = fscrypt_pagecache_page(target); |
4c8ff709 CY |
602 | if (IS_ERR(target)) |
603 | continue; | |
604 | } | |
605 | if (f2fs_is_compressed_page(target)) { | |
606 | target = f2fs_compress_control_page(target); | |
607 | if (IS_ERR(target)) | |
608 | continue; | |
609 | } | |
0fd785eb | 610 | |
0c3a5797 CY |
611 | if (inode && inode == target->mapping->host) |
612 | return true; | |
bab475c5 CY |
613 | if (page && page == target) |
614 | return true; | |
0c3a5797 | 615 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 616 | return true; |
0fd785eb CY |
617 | } |
618 | ||
0fd785eb CY |
619 | return false; |
620 | } | |
621 | ||
908ea654 YY |
622 | int f2fs_init_write_merge_io(struct f2fs_sb_info *sbi) |
623 | { | |
624 | int i; | |
625 | ||
626 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
627 | int n = (i == META) ? 1 : NR_TEMP_TYPE; | |
628 | int j; | |
629 | ||
630 | sbi->write_io[i] = f2fs_kmalloc(sbi, | |
631 | array_size(n, sizeof(struct f2fs_bio_info)), | |
632 | GFP_KERNEL); | |
633 | if (!sbi->write_io[i]) | |
634 | return -ENOMEM; | |
635 | ||
636 | for (j = HOT; j < n; j++) { | |
637 | init_f2fs_rwsem(&sbi->write_io[i][j].io_rwsem); | |
638 | sbi->write_io[i][j].sbi = sbi; | |
639 | sbi->write_io[i][j].bio = NULL; | |
640 | spin_lock_init(&sbi->write_io[i][j].io_lock); | |
641 | INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); | |
642 | INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list); | |
643 | init_f2fs_rwsem(&sbi->write_io[i][j].bio_list_lock); | |
644 | } | |
645 | } | |
646 | ||
647 | return 0; | |
648 | } | |
649 | ||
b9109b0e | 650 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 651 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
652 | { |
653 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 654 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 655 | |
e4544b63 | 656 | f2fs_down_write(&io->io_rwsem); |
458e6197 JK |
657 | |
658 | /* change META to META_FLUSH in the checkpoint procedure */ | |
659 | if (type >= META_FLUSH) { | |
660 | io->fio.type = META_FLUSH; | |
64bf0eef | 661 | io->bio->bi_opf |= REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 662 | if (!test_opt(sbi, NOBARRIER)) |
64bf0eef | 663 | io->bio->bi_opf |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
664 | } |
665 | __submit_merged_bio(io); | |
e4544b63 | 666 | f2fs_up_write(&io->io_rwsem); |
93dfe2ac JK |
667 | } |
668 | ||
a912b54d | 669 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
670 | struct inode *inode, struct page *page, |
671 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 672 | { |
a912b54d | 673 | enum temp_type temp; |
1e771e83 | 674 | bool ret = true; |
a912b54d JK |
675 | |
676 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
677 | if (!force) { |
678 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
679 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 680 | |
e4544b63 | 681 | f2fs_down_read(&io->io_rwsem); |
8648de2c | 682 | ret = __has_merged_page(io->bio, inode, page, ino); |
e4544b63 | 683 | f2fs_up_read(&io->io_rwsem); |
1e771e83 YS |
684 | } |
685 | if (ret) | |
686 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
687 | |
688 | /* TODO: use HOT temp only for meta pages now. */ | |
689 | if (type >= META) | |
690 | break; | |
691 | } | |
0c3a5797 CY |
692 | } |
693 | ||
b9109b0e | 694 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 695 | { |
adcc00f7 | 696 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
697 | } |
698 | ||
b9109b0e | 699 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
700 | struct inode *inode, struct page *page, |
701 | nid_t ino, enum page_type type) | |
0c3a5797 | 702 | { |
bab475c5 | 703 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
704 | } |
705 | ||
b9109b0e | 706 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 707 | { |
b9109b0e JK |
708 | f2fs_submit_merged_write(sbi, DATA); |
709 | f2fs_submit_merged_write(sbi, NODE); | |
710 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
711 | } |
712 | ||
93dfe2ac JK |
713 | /* |
714 | * Fill the locked page with data located in the block address. | |
771a9a71 | 715 | * A caller needs to unlock the page on failure. |
93dfe2ac | 716 | */ |
05ca3632 | 717 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 718 | { |
93dfe2ac | 719 | struct bio *bio; |
0b81d077 JK |
720 | struct page *page = fio->encrypted_page ? |
721 | fio->encrypted_page : fio->page; | |
93dfe2ac | 722 | |
c9b60788 | 723 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
93770ab7 | 724 | fio->is_por ? META_POR : (__is_meta_io(fio) ? |
95fa90c9 CY |
725 | META_GENERIC : DATA_GENERIC_ENHANCE))) { |
726 | f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR); | |
10f966bb | 727 | return -EFSCORRUPTED; |
95fa90c9 | 728 | } |
c9b60788 | 729 | |
2ace38e0 | 730 | trace_f2fs_submit_page_bio(page, fio); |
93dfe2ac JK |
731 | |
732 | /* Allocate a new bio */ | |
b757f6ed | 733 | bio = __bio_alloc(fio, 1); |
93dfe2ac | 734 | |
27aacd28 ST |
735 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
736 | fio->page->index, fio, GFP_NOIO); | |
737 | ||
09cbfeaf | 738 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 739 | bio_put(bio); |
93dfe2ac JK |
740 | return -EFAULT; |
741 | } | |
78efac53 CY |
742 | |
743 | if (fio->io_wbc && !is_read_io(fio->op)) | |
34e51a5e | 744 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
78efac53 | 745 | |
5f9abab4 | 746 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
544b53da | 747 | __read_io_type(page) : WB_DATA_TYPE(fio->page)); |
4c58ed07 CY |
748 | |
749 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
750 | return 0; |
751 | } | |
752 | ||
8896cbdf CY |
753 | static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, |
754 | block_t last_blkaddr, block_t cur_blkaddr) | |
755 | { | |
10208567 JK |
756 | if (unlikely(sbi->max_io_bytes && |
757 | bio->bi_iter.bi_size >= sbi->max_io_bytes)) | |
758 | return false; | |
8896cbdf CY |
759 | if (last_blkaddr + 1 != cur_blkaddr) |
760 | return false; | |
309dca30 | 761 | return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL); |
8896cbdf CY |
762 | } |
763 | ||
764 | static bool io_type_is_mergeable(struct f2fs_bio_info *io, | |
765 | struct f2fs_io_info *fio) | |
766 | { | |
767 | if (io->fio.op != fio->op) | |
768 | return false; | |
769 | return io->fio.op_flags == fio->op_flags; | |
770 | } | |
771 | ||
772 | static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, | |
773 | struct f2fs_bio_info *io, | |
774 | struct f2fs_io_info *fio, | |
775 | block_t last_blkaddr, | |
776 | block_t cur_blkaddr) | |
777 | { | |
c72db71e CY |
778 | if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { |
779 | unsigned int filled_blocks = | |
780 | F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); | |
781 | unsigned int io_size = F2FS_IO_SIZE(sbi); | |
782 | unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; | |
783 | ||
784 | /* IOs in bio is aligned and left space of vectors is not enough */ | |
785 | if (!(filled_blocks % io_size) && left_vecs < io_size) | |
786 | return false; | |
787 | } | |
8896cbdf CY |
788 | if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) |
789 | return false; | |
790 | return io_type_is_mergeable(io, fio); | |
791 | } | |
792 | ||
0b20fcec CY |
793 | static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, |
794 | struct page *page, enum temp_type temp) | |
795 | { | |
796 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
797 | struct bio_entry *be; | |
798 | ||
32410577 | 799 | be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS, true, NULL); |
0b20fcec CY |
800 | be->bio = bio; |
801 | bio_get(bio); | |
802 | ||
803 | if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE) | |
804 | f2fs_bug_on(sbi, 1); | |
805 | ||
e4544b63 | 806 | f2fs_down_write(&io->bio_list_lock); |
0b20fcec | 807 | list_add_tail(&be->list, &io->bio_list); |
e4544b63 | 808 | f2fs_up_write(&io->bio_list_lock); |
0b20fcec CY |
809 | } |
810 | ||
811 | static void del_bio_entry(struct bio_entry *be) | |
812 | { | |
813 | list_del(&be->list); | |
814 | kmem_cache_free(bio_entry_slab, be); | |
815 | } | |
816 | ||
27aacd28 | 817 | static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio, |
0b20fcec CY |
818 | struct page *page) |
819 | { | |
27aacd28 | 820 | struct f2fs_sb_info *sbi = fio->sbi; |
0b20fcec CY |
821 | enum temp_type temp; |
822 | bool found = false; | |
823 | int ret = -EAGAIN; | |
824 | ||
825 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
826 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
827 | struct list_head *head = &io->bio_list; | |
828 | struct bio_entry *be; | |
829 | ||
e4544b63 | 830 | f2fs_down_write(&io->bio_list_lock); |
0b20fcec CY |
831 | list_for_each_entry(be, head, list) { |
832 | if (be->bio != *bio) | |
833 | continue; | |
834 | ||
835 | found = true; | |
836 | ||
27aacd28 ST |
837 | f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio, |
838 | *fio->last_block, | |
839 | fio->new_blkaddr)); | |
840 | if (f2fs_crypt_mergeable_bio(*bio, | |
841 | fio->page->mapping->host, | |
842 | fio->page->index, fio) && | |
843 | bio_add_page(*bio, page, PAGE_SIZE, 0) == | |
844 | PAGE_SIZE) { | |
0b20fcec CY |
845 | ret = 0; |
846 | break; | |
847 | } | |
848 | ||
27aacd28 | 849 | /* page can't be merged into bio; submit the bio */ |
0b20fcec CY |
850 | del_bio_entry(be); |
851 | __submit_bio(sbi, *bio, DATA); | |
852 | break; | |
853 | } | |
e4544b63 | 854 | f2fs_up_write(&io->bio_list_lock); |
0b20fcec CY |
855 | } |
856 | ||
857 | if (ret) { | |
858 | bio_put(*bio); | |
859 | *bio = NULL; | |
860 | } | |
861 | ||
862 | return ret; | |
863 | } | |
864 | ||
865 | void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, | |
866 | struct bio **bio, struct page *page) | |
867 | { | |
868 | enum temp_type temp; | |
869 | bool found = false; | |
870 | struct bio *target = bio ? *bio : NULL; | |
871 | ||
872 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
873 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
874 | struct list_head *head = &io->bio_list; | |
875 | struct bio_entry *be; | |
876 | ||
877 | if (list_empty(head)) | |
878 | continue; | |
879 | ||
e4544b63 | 880 | f2fs_down_read(&io->bio_list_lock); |
0b20fcec CY |
881 | list_for_each_entry(be, head, list) { |
882 | if (target) | |
883 | found = (target == be->bio); | |
884 | else | |
885 | found = __has_merged_page(be->bio, NULL, | |
886 | page, 0); | |
887 | if (found) | |
888 | break; | |
889 | } | |
e4544b63 | 890 | f2fs_up_read(&io->bio_list_lock); |
0b20fcec CY |
891 | |
892 | if (!found) | |
893 | continue; | |
894 | ||
895 | found = false; | |
896 | ||
e4544b63 | 897 | f2fs_down_write(&io->bio_list_lock); |
0b20fcec CY |
898 | list_for_each_entry(be, head, list) { |
899 | if (target) | |
900 | found = (target == be->bio); | |
901 | else | |
902 | found = __has_merged_page(be->bio, NULL, | |
903 | page, 0); | |
904 | if (found) { | |
905 | target = be->bio; | |
906 | del_bio_entry(be); | |
907 | break; | |
908 | } | |
909 | } | |
e4544b63 | 910 | f2fs_up_write(&io->bio_list_lock); |
0b20fcec CY |
911 | } |
912 | ||
913 | if (found) | |
914 | __submit_bio(sbi, target, DATA); | |
915 | if (bio && *bio) { | |
916 | bio_put(*bio); | |
917 | *bio = NULL; | |
918 | } | |
919 | } | |
920 | ||
8648de2c CY |
921 | int f2fs_merge_page_bio(struct f2fs_io_info *fio) |
922 | { | |
923 | struct bio *bio = *fio->bio; | |
924 | struct page *page = fio->encrypted_page ? | |
925 | fio->encrypted_page : fio->page; | |
926 | ||
927 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, | |
95fa90c9 CY |
928 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) { |
929 | f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR); | |
10f966bb | 930 | return -EFSCORRUPTED; |
95fa90c9 | 931 | } |
8648de2c CY |
932 | |
933 | trace_f2fs_submit_page_bio(page, fio); | |
8648de2c | 934 | |
8896cbdf | 935 | if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, |
0b20fcec CY |
936 | fio->new_blkaddr)) |
937 | f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL); | |
8648de2c CY |
938 | alloc_new: |
939 | if (!bio) { | |
a8affc03 | 940 | bio = __bio_alloc(fio, BIO_MAX_VECS); |
27aacd28 ST |
941 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
942 | fio->page->index, fio, GFP_NOIO); | |
8648de2c | 943 | |
0b20fcec CY |
944 | add_bio_entry(fio->sbi, bio, page, fio->temp); |
945 | } else { | |
27aacd28 | 946 | if (add_ipu_page(fio, &bio, page)) |
0b20fcec | 947 | goto alloc_new; |
8648de2c CY |
948 | } |
949 | ||
950 | if (fio->io_wbc) | |
9637d517 | 951 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
8648de2c CY |
952 | |
953 | inc_page_count(fio->sbi, WB_DATA_TYPE(page)); | |
954 | ||
955 | *fio->last_block = fio->new_blkaddr; | |
956 | *fio->bio = bio; | |
957 | ||
958 | return 0; | |
959 | } | |
960 | ||
fe16efe6 | 961 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 962 | { |
05ca3632 | 963 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 964 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 965 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 966 | struct page *bio_page; |
93dfe2ac | 967 | |
b9109b0e | 968 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 969 | |
e4544b63 | 970 | f2fs_down_write(&io->io_rwsem); |
fb830fc5 CY |
971 | next: |
972 | if (fio->in_list) { | |
973 | spin_lock(&io->io_lock); | |
974 | if (list_empty(&io->io_list)) { | |
975 | spin_unlock(&io->io_lock); | |
fe16efe6 | 976 | goto out; |
fb830fc5 CY |
977 | } |
978 | fio = list_first_entry(&io->io_list, | |
979 | struct f2fs_io_info, list); | |
980 | list_del(&fio->list); | |
981 | spin_unlock(&io->io_lock); | |
982 | } | |
93dfe2ac | 983 | |
93770ab7 | 984 | verify_fio_blkaddr(fio); |
93dfe2ac | 985 | |
4c8ff709 CY |
986 | if (fio->encrypted_page) |
987 | bio_page = fio->encrypted_page; | |
988 | else if (fio->compressed_page) | |
989 | bio_page = fio->compressed_page; | |
990 | else | |
991 | bio_page = fio->page; | |
36951b38 | 992 | |
ebf7c522 TM |
993 | /* set submitted = true as a return value */ |
994 | fio->submitted = true; | |
d68f735b | 995 | |
b9109b0e | 996 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 997 | |
27aacd28 ST |
998 | if (io->bio && |
999 | (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio, | |
1000 | fio->new_blkaddr) || | |
1001 | !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host, | |
1002 | bio_page->index, fio))) | |
458e6197 | 1003 | __submit_merged_bio(io); |
93dfe2ac JK |
1004 | alloc_new: |
1005 | if (io->bio == NULL) { | |
8223ecc4 CY |
1006 | if (F2FS_IO_ALIGNED(sbi) && |
1007 | (fio->type == DATA || fio->type == NODE) && | |
0a595eba | 1008 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { |
b9109b0e | 1009 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
1010 | fio->retry = true; |
1011 | goto skip; | |
0a595eba | 1012 | } |
a8affc03 | 1013 | io->bio = __bio_alloc(fio, BIO_MAX_VECS); |
27aacd28 ST |
1014 | f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host, |
1015 | bio_page->index, fio, GFP_NOIO); | |
458e6197 | 1016 | io->fio = *fio; |
93dfe2ac JK |
1017 | } |
1018 | ||
a912b54d | 1019 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 1020 | __submit_merged_bio(io); |
93dfe2ac JK |
1021 | goto alloc_new; |
1022 | } | |
1023 | ||
578c6478 | 1024 | if (fio->io_wbc) |
34e51a5e | 1025 | wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); |
578c6478 | 1026 | |
7a9d7548 | 1027 | io->last_block_in_bio = fio->new_blkaddr; |
fb830fc5 CY |
1028 | |
1029 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 1030 | skip: |
fb830fc5 CY |
1031 | if (fio->in_list) |
1032 | goto next; | |
fe16efe6 | 1033 | out: |
4354994f | 1034 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
00e09c0b | 1035 | !f2fs_is_checkpoint_ready(sbi)) |
5ce80586 | 1036 | __submit_merged_bio(io); |
e4544b63 | 1037 | f2fs_up_write(&io->io_rwsem); |
93dfe2ac JK |
1038 | } |
1039 | ||
13ba41e3 | 1040 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
7649c873 | 1041 | unsigned nr_pages, blk_opf_t op_flag, |
7f59b277 | 1042 | pgoff_t first_idx, bool for_write) |
13ba41e3 JK |
1043 | { |
1044 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 1045 | struct bio *bio; |
a4b68176 | 1046 | struct bio_post_read_ctx *ctx = NULL; |
6dbb1796 | 1047 | unsigned int post_read_steps = 0; |
5189810a CH |
1048 | sector_t sector; |
1049 | struct block_device *bdev = f2fs_target_device(sbi, blkaddr, §or); | |
13ba41e3 | 1050 | |
64bf0eef CH |
1051 | bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages), |
1052 | REQ_OP_READ | op_flag, | |
609be106 | 1053 | for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset); |
6dbb1796 | 1054 | if (!bio) |
13ba41e3 | 1055 | return ERR_PTR(-ENOMEM); |
5189810a | 1056 | bio->bi_iter.bi_sector = sector; |
27aacd28 | 1057 | f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); |
13ba41e3 | 1058 | bio->bi_end_io = f2fs_read_end_io; |
13ba41e3 | 1059 | |
27aacd28 | 1060 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
7f59b277 | 1061 | post_read_steps |= STEP_DECRYPT; |
95ae251f | 1062 | |
7f59b277 EB |
1063 | if (f2fs_need_verity(inode, first_idx)) |
1064 | post_read_steps |= STEP_VERITY; | |
1065 | ||
1066 | /* | |
1067 | * STEP_DECOMPRESS is handled specially, since a compressed file might | |
1068 | * contain both compressed and uncompressed clusters. We'll allocate a | |
1069 | * bio_post_read_ctx if the file is compressed, but the caller is | |
1070 | * responsible for enabling STEP_DECOMPRESS if it's actually needed. | |
1071 | */ | |
1072 | ||
1073 | if (post_read_steps || f2fs_compressed_file(inode)) { | |
e8ce5749 | 1074 | /* Due to the mempool, this never fails. */ |
6dbb1796 | 1075 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); |
6dbb1796 | 1076 | ctx->bio = bio; |
4c8ff709 | 1077 | ctx->sbi = sbi; |
6dbb1796 | 1078 | ctx->enabled_steps = post_read_steps; |
4931e0c9 | 1079 | ctx->fs_blkaddr = blkaddr; |
98dc08ba | 1080 | ctx->decompression_attempted = false; |
6dbb1796 | 1081 | bio->bi_private = ctx; |
6dbb1796 | 1082 | } |
a4b68176 | 1083 | iostat_alloc_and_bind_ctx(sbi, bio, ctx); |
6dbb1796 | 1084 | |
13ba41e3 JK |
1085 | return bio; |
1086 | } | |
1087 | ||
1088 | /* This can handle encryption stuffs */ | |
1089 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
7649c873 BVA |
1090 | block_t blkaddr, blk_opf_t op_flags, |
1091 | bool for_write) | |
13ba41e3 | 1092 | { |
93770ab7 CY |
1093 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1094 | struct bio *bio; | |
13ba41e3 | 1095 | |
b7973091 | 1096 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags, |
7f59b277 | 1097 | page->index, for_write); |
13ba41e3 JK |
1098 | if (IS_ERR(bio)) |
1099 | return PTR_ERR(bio); | |
1100 | ||
0ded69f6 JK |
1101 | /* wait for GCed page writeback via META_MAPPING */ |
1102 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
1103 | ||
13ba41e3 JK |
1104 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
1105 | bio_put(bio); | |
1106 | return -EFAULT; | |
1107 | } | |
93770ab7 | 1108 | inc_page_count(sbi, F2FS_RD_DATA); |
34a23525 | 1109 | f2fs_update_iostat(sbi, NULL, FS_DATA_READ_IO, F2FS_BLKSIZE); |
93770ab7 | 1110 | __submit_bio(sbi, bio, DATA); |
13ba41e3 JK |
1111 | return 0; |
1112 | } | |
1113 | ||
46008c6d CY |
1114 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
1115 | { | |
1116 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
1117 | __le32 *addr_array; | |
7a2af766 CY |
1118 | int base = 0; |
1119 | ||
1120 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
1121 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
1122 | |
1123 | /* Get physical address of data block */ | |
1124 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 1125 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
1126 | } |
1127 | ||
0a8165d7 | 1128 | /* |
eb47b800 JK |
1129 | * Lock ordering for the change of data block address: |
1130 | * ->data_page | |
1131 | * ->node_page | |
1132 | * update block addresses in the node page | |
1133 | */ | |
4d57b86d | 1134 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 1135 | { |
bae0ee7a | 1136 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1137 | __set_data_blkaddr(dn); |
1138 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 1139 | dn->node_changed = true; |
eb47b800 JK |
1140 | } |
1141 | ||
f28b3434 CY |
1142 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
1143 | { | |
1144 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 1145 | f2fs_set_data_blkaddr(dn); |
e7547dac | 1146 | f2fs_update_read_extent_cache(dn); |
f28b3434 CY |
1147 | } |
1148 | ||
46008c6d | 1149 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 1150 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 1151 | { |
4081363f | 1152 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 1153 | int err; |
eb47b800 | 1154 | |
46008c6d CY |
1155 | if (!count) |
1156 | return 0; | |
1157 | ||
91942321 | 1158 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 1159 | return -EPERM; |
0abd675e CY |
1160 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1161 | return err; | |
eb47b800 | 1162 | |
46008c6d CY |
1163 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
1164 | dn->ofs_in_node, count); | |
1165 | ||
bae0ee7a | 1166 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1167 | |
1168 | for (; count > 0; dn->ofs_in_node++) { | |
a2ced1ce | 1169 | block_t blkaddr = f2fs_data_blkaddr(dn); |
5f029c04 | 1170 | |
46008c6d CY |
1171 | if (blkaddr == NULL_ADDR) { |
1172 | dn->data_blkaddr = NEW_ADDR; | |
1173 | __set_data_blkaddr(dn); | |
1174 | count--; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | if (set_page_dirty(dn->node_page)) | |
1179 | dn->node_changed = true; | |
eb47b800 JK |
1180 | return 0; |
1181 | } | |
1182 | ||
46008c6d | 1183 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 1184 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
1185 | { |
1186 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1187 | int ret; | |
1188 | ||
4d57b86d | 1189 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
1190 | dn->ofs_in_node = ofs_in_node; |
1191 | return ret; | |
1192 | } | |
1193 | ||
b600965c HL |
1194 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
1195 | { | |
1196 | bool need_put = dn->inode_page ? false : true; | |
1197 | int err; | |
1198 | ||
4d57b86d | 1199 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
1200 | if (err) |
1201 | return err; | |
a8865372 | 1202 | |
b600965c | 1203 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 1204 | err = f2fs_reserve_new_block(dn); |
a8865372 | 1205 | if (err || need_put) |
b600965c HL |
1206 | f2fs_put_dnode(dn); |
1207 | return err; | |
1208 | } | |
1209 | ||
759af1c9 | 1210 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 1211 | { |
94afd6d6 | 1212 | struct extent_info ei = {0, }; |
759af1c9 | 1213 | struct inode *inode = dn->inode; |
028a41e8 | 1214 | |
e7547dac | 1215 | if (f2fs_lookup_read_extent_cache(inode, index, &ei)) { |
759af1c9 FL |
1216 | dn->data_blkaddr = ei.blk + index - ei.fofs; |
1217 | return 0; | |
429511cd | 1218 | } |
028a41e8 | 1219 | |
759af1c9 | 1220 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
1221 | } |
1222 | ||
4d57b86d | 1223 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
59237a21 CY |
1224 | blk_opf_t op_flags, bool for_write, |
1225 | pgoff_t *next_pgofs) | |
eb47b800 | 1226 | { |
eb47b800 JK |
1227 | struct address_space *mapping = inode->i_mapping; |
1228 | struct dnode_of_data dn; | |
1229 | struct page *page; | |
94afd6d6 | 1230 | struct extent_info ei = {0, }; |
eb47b800 | 1231 | int err; |
4375a336 | 1232 | |
a56c7c6f | 1233 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
1234 | if (!page) |
1235 | return ERR_PTR(-ENOMEM); | |
1236 | ||
e7547dac | 1237 | if (f2fs_lookup_read_extent_cache(inode, index, &ei)) { |
cb3bc9ee | 1238 | dn.data_blkaddr = ei.blk + index - ei.fofs; |
93770ab7 CY |
1239 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
1240 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 1241 | err = -EFSCORRUPTED; |
95fa90c9 CY |
1242 | f2fs_handle_error(F2FS_I_SB(inode), |
1243 | ERROR_INVALID_BLKADDR); | |
93770ab7 CY |
1244 | goto put_err; |
1245 | } | |
cb3bc9ee CY |
1246 | goto got_it; |
1247 | } | |
1248 | ||
eb47b800 | 1249 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1250 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
59237a21 CY |
1251 | if (err) { |
1252 | if (err == -ENOENT && next_pgofs) | |
1253 | *next_pgofs = f2fs_get_next_page_offset(&dn, index); | |
86531d6b | 1254 | goto put_err; |
59237a21 | 1255 | } |
eb47b800 JK |
1256 | f2fs_put_dnode(&dn); |
1257 | ||
6bacf52f | 1258 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b | 1259 | err = -ENOENT; |
59237a21 CY |
1260 | if (next_pgofs) |
1261 | *next_pgofs = index + 1; | |
86531d6b | 1262 | goto put_err; |
650495de | 1263 | } |
93770ab7 CY |
1264 | if (dn.data_blkaddr != NEW_ADDR && |
1265 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
1266 | dn.data_blkaddr, | |
1267 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 1268 | err = -EFSCORRUPTED; |
95fa90c9 CY |
1269 | f2fs_handle_error(F2FS_I_SB(inode), |
1270 | ERROR_INVALID_BLKADDR); | |
93770ab7 CY |
1271 | goto put_err; |
1272 | } | |
cb3bc9ee | 1273 | got_it: |
43f3eae1 JK |
1274 | if (PageUptodate(page)) { |
1275 | unlock_page(page); | |
eb47b800 | 1276 | return page; |
43f3eae1 | 1277 | } |
eb47b800 | 1278 | |
d59ff4df JK |
1279 | /* |
1280 | * A new dentry page is allocated but not able to be written, since its | |
1281 | * new inode page couldn't be allocated due to -ENOSPC. | |
1282 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
1283 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
1284 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
1285 | */ |
1286 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1287 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1288 | if (!PageUptodate(page)) |
1289 | SetPageUptodate(page); | |
43f3eae1 | 1290 | unlock_page(page); |
d59ff4df JK |
1291 | return page; |
1292 | } | |
eb47b800 | 1293 | |
b7973091 JY |
1294 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr, |
1295 | op_flags, for_write); | |
393ff91f | 1296 | if (err) |
86531d6b | 1297 | goto put_err; |
43f3eae1 | 1298 | return page; |
86531d6b JK |
1299 | |
1300 | put_err: | |
1301 | f2fs_put_page(page, 1); | |
1302 | return ERR_PTR(err); | |
43f3eae1 JK |
1303 | } |
1304 | ||
59237a21 CY |
1305 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index, |
1306 | pgoff_t *next_pgofs) | |
43f3eae1 JK |
1307 | { |
1308 | struct address_space *mapping = inode->i_mapping; | |
1309 | struct page *page; | |
1310 | ||
1311 | page = find_get_page(mapping, index); | |
1312 | if (page && PageUptodate(page)) | |
1313 | return page; | |
1314 | f2fs_put_page(page, 0); | |
1315 | ||
59237a21 | 1316 | page = f2fs_get_read_data_page(inode, index, 0, false, next_pgofs); |
43f3eae1 JK |
1317 | if (IS_ERR(page)) |
1318 | return page; | |
1319 | ||
1320 | if (PageUptodate(page)) | |
1321 | return page; | |
1322 | ||
1323 | wait_on_page_locked(page); | |
1324 | if (unlikely(!PageUptodate(page))) { | |
1325 | f2fs_put_page(page, 0); | |
1326 | return ERR_PTR(-EIO); | |
1327 | } | |
1328 | return page; | |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * If it tries to access a hole, return an error. | |
1333 | * Because, the callers, functions in dir.c and GC, should be able to know | |
1334 | * whether this page exists or not. | |
1335 | */ | |
4d57b86d | 1336 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 1337 | bool for_write) |
43f3eae1 JK |
1338 | { |
1339 | struct address_space *mapping = inode->i_mapping; | |
1340 | struct page *page; | |
1341 | repeat: | |
59237a21 | 1342 | page = f2fs_get_read_data_page(inode, index, 0, for_write, NULL); |
43f3eae1 JK |
1343 | if (IS_ERR(page)) |
1344 | return page; | |
393ff91f | 1345 | |
43f3eae1 | 1346 | /* wait for read completion */ |
393ff91f | 1347 | lock_page(page); |
6bacf52f | 1348 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
1349 | f2fs_put_page(page, 1); |
1350 | goto repeat; | |
eb47b800 | 1351 | } |
1563ac75 CY |
1352 | if (unlikely(!PageUptodate(page))) { |
1353 | f2fs_put_page(page, 1); | |
1354 | return ERR_PTR(-EIO); | |
1355 | } | |
eb47b800 JK |
1356 | return page; |
1357 | } | |
1358 | ||
0a8165d7 | 1359 | /* |
eb47b800 JK |
1360 | * Caller ensures that this data page is never allocated. |
1361 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 1362 | * |
4f4124d0 CY |
1363 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
1364 | * f2fs_unlock_op(). | |
470f00e9 CY |
1365 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
1366 | * ipage should be released by this function. | |
eb47b800 | 1367 | */ |
4d57b86d | 1368 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 1369 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 1370 | { |
eb47b800 JK |
1371 | struct address_space *mapping = inode->i_mapping; |
1372 | struct page *page; | |
1373 | struct dnode_of_data dn; | |
1374 | int err; | |
7612118a | 1375 | |
a56c7c6f | 1376 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
1377 | if (!page) { |
1378 | /* | |
1379 | * before exiting, we should make sure ipage will be released | |
1380 | * if any error occur. | |
1381 | */ | |
1382 | f2fs_put_page(ipage, 1); | |
01f28610 | 1383 | return ERR_PTR(-ENOMEM); |
470f00e9 | 1384 | } |
eb47b800 | 1385 | |
a8865372 | 1386 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 1387 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
1388 | if (err) { |
1389 | f2fs_put_page(page, 1); | |
eb47b800 | 1390 | return ERR_PTR(err); |
a8865372 | 1391 | } |
01f28610 JK |
1392 | if (!ipage) |
1393 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1394 | |
1395 | if (PageUptodate(page)) | |
01f28610 | 1396 | goto got_it; |
eb47b800 JK |
1397 | |
1398 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1399 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1400 | if (!PageUptodate(page)) |
1401 | SetPageUptodate(page); | |
eb47b800 | 1402 | } else { |
4375a336 | 1403 | f2fs_put_page(page, 1); |
a8865372 | 1404 | |
7612118a JK |
1405 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1406 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1407 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1408 | if (IS_ERR(page)) |
7612118a | 1409 | return page; |
eb47b800 | 1410 | } |
01f28610 | 1411 | got_it: |
9edcdabf | 1412 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1413 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1414 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1415 | return page; |
1416 | } | |
1417 | ||
d5097be5 | 1418 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1419 | { |
4081363f | 1420 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1421 | struct f2fs_summary sum; |
bfad7c2d | 1422 | struct node_info ni; |
6aa58d8a | 1423 | block_t old_blkaddr; |
46008c6d | 1424 | blkcnt_t count = 1; |
0abd675e | 1425 | int err; |
bfad7c2d | 1426 | |
91942321 | 1427 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1428 | return -EPERM; |
df6136ef | 1429 | |
a9419b63 | 1430 | err = f2fs_get_node_info(sbi, dn->nid, &ni, false); |
7735730d CY |
1431 | if (err) |
1432 | return err; | |
1433 | ||
a2ced1ce | 1434 | dn->data_blkaddr = f2fs_data_blkaddr(dn); |
f847c699 | 1435 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1436 | goto alloc; |
1437 | ||
0abd675e CY |
1438 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1439 | return err; | |
bfad7c2d | 1440 | |
df6136ef | 1441 | alloc: |
bfad7c2d | 1442 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1443 | old_blkaddr = dn->data_blkaddr; |
1444 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
093749e2 | 1445 | &sum, seg_type, NULL); |
6ce19aff | 1446 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
6aa58d8a CY |
1447 | invalidate_mapping_pages(META_MAPPING(sbi), |
1448 | old_blkaddr, old_blkaddr); | |
6ce19aff CY |
1449 | f2fs_invalidate_compress_page(sbi, old_blkaddr); |
1450 | } | |
86f35dc3 | 1451 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d JK |
1452 | return 0; |
1453 | } | |
1454 | ||
0ef81833 | 1455 | void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1456 | { |
1457 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1458 | if (lock) | |
e4544b63 | 1459 | f2fs_down_read(&sbi->node_change); |
59c9081b | 1460 | else |
e4544b63 | 1461 | f2fs_up_read(&sbi->node_change); |
59c9081b YH |
1462 | } else { |
1463 | if (lock) | |
1464 | f2fs_lock_op(sbi); | |
1465 | else | |
1466 | f2fs_unlock_op(sbi); | |
1467 | } | |
1468 | } | |
1469 | ||
0a8165d7 | 1470 | /* |
7a88ddb5 CY |
1471 | * f2fs_map_blocks() tries to find or build mapping relationship which |
1472 | * maps continuous logical blocks to physical blocks, and return such | |
1473 | * info via f2fs_map_blocks structure. | |
eb47b800 | 1474 | */ |
d323d005 | 1475 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1476 | int create, int flag) |
eb47b800 | 1477 | { |
003a3e1d | 1478 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1479 | struct dnode_of_data dn; |
f9811703 | 1480 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1481 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1482 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1483 | int err = 0, ofs = 1; |
46008c6d CY |
1484 | unsigned int ofs_in_node, last_ofs_in_node; |
1485 | blkcnt_t prealloc; | |
94afd6d6 | 1486 | struct extent_info ei = {0, }; |
7df3a431 | 1487 | block_t blkaddr; |
c4020b2d | 1488 | unsigned int start_pgofs; |
71f2c820 | 1489 | int bidx = 0; |
eb47b800 | 1490 | |
dfd02e4d CY |
1491 | if (!maxblocks) |
1492 | return 0; | |
1493 | ||
71f2c820 CY |
1494 | map->m_bdev = inode->i_sb->s_bdev; |
1495 | map->m_multidev_dio = | |
1496 | f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag); | |
1497 | ||
003a3e1d JK |
1498 | map->m_len = 0; |
1499 | map->m_flags = 0; | |
1500 | ||
1501 | /* it only supports block size == page size */ | |
1502 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1503 | end = pgofs + maxblocks; |
eb47b800 | 1504 | |
e7547dac | 1505 | if (!create && f2fs_lookup_read_extent_cache(inode, pgofs, &ei)) { |
b0332a0f | 1506 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f4f0b677 JZ |
1507 | map->m_may_create) |
1508 | goto next_dnode; | |
1509 | ||
003a3e1d JK |
1510 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1511 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1512 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1513 | if (map->m_next_extent) |
1514 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1515 | |
1516 | /* for hardware encryption, but to avoid potential issue in future */ | |
1517 | if (flag == F2FS_GET_BLOCK_DIO) | |
1518 | f2fs_wait_on_block_writeback_range(inode, | |
1519 | map->m_pblk, map->m_len); | |
71f2c820 CY |
1520 | |
1521 | if (map->m_multidev_dio) { | |
1522 | block_t blk_addr = map->m_pblk; | |
1523 | ||
1524 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1525 | ||
1526 | map->m_bdev = FDEV(bidx).bdev; | |
1527 | map->m_pblk -= FDEV(bidx).start_blk; | |
1528 | map->m_len = min(map->m_len, | |
1529 | FDEV(bidx).end_blk + 1 - map->m_pblk); | |
1530 | ||
1531 | if (map->m_may_create) | |
1532 | f2fs_update_device_state(sbi, inode->i_ino, | |
1533 | blk_addr, map->m_len); | |
1534 | } | |
bfad7c2d | 1535 | goto out; |
a2e7d1bf | 1536 | } |
bfad7c2d | 1537 | |
4fe71e88 | 1538 | next_dnode: |
f9d6d059 | 1539 | if (map->m_may_create) |
0ef81833 | 1540 | f2fs_do_map_lock(sbi, flag, true); |
eb47b800 JK |
1541 | |
1542 | /* When reading holes, we need its node page */ | |
1543 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1544 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1545 | if (err) { |
43473f96 CY |
1546 | if (flag == F2FS_GET_BLOCK_BMAP) |
1547 | map->m_pblk = 0; | |
adf9ea89 | 1548 | |
da85985c | 1549 | if (err == -ENOENT) { |
adf9ea89 CY |
1550 | /* |
1551 | * There is one exceptional case that read_node_page() | |
1552 | * may return -ENOENT due to filesystem has been | |
1553 | * shutdown or cp_error, so force to convert error | |
1554 | * number to EIO for such case. | |
1555 | */ | |
1556 | if (map->m_may_create && | |
1557 | (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || | |
1558 | f2fs_cp_error(sbi))) { | |
1559 | err = -EIO; | |
1560 | goto unlock_out; | |
1561 | } | |
1562 | ||
bfad7c2d | 1563 | err = 0; |
da85985c CY |
1564 | if (map->m_next_pgofs) |
1565 | *map->m_next_pgofs = | |
4d57b86d | 1566 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1567 | if (map->m_next_extent) |
1568 | *map->m_next_extent = | |
4d57b86d | 1569 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1570 | } |
bfad7c2d | 1571 | goto unlock_out; |
848753aa | 1572 | } |
973163fc | 1573 | |
c4020b2d | 1574 | start_pgofs = pgofs; |
46008c6d | 1575 | prealloc = 0; |
230436b3 | 1576 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1577 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1578 | |
1579 | next_block: | |
a2ced1ce | 1580 | blkaddr = f2fs_data_blkaddr(&dn); |
4fe71e88 | 1581 | |
c9b60788 | 1582 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1583 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1584 | err = -EFSCORRUPTED; |
95fa90c9 | 1585 | f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); |
c9b60788 CY |
1586 | goto sync_out; |
1587 | } | |
1588 | ||
93770ab7 | 1589 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1590 | /* use out-place-update for driect IO under LFS mode */ |
b0332a0f | 1591 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f9d6d059 | 1592 | map->m_may_create) { |
f847c699 | 1593 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1594 | if (err) |
1595 | goto sync_out; | |
1596 | blkaddr = dn.data_blkaddr; | |
1597 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1598 | } |
1599 | } else { | |
973163fc | 1600 | if (create) { |
f9811703 CY |
1601 | if (unlikely(f2fs_cp_error(sbi))) { |
1602 | err = -EIO; | |
4fe71e88 | 1603 | goto sync_out; |
f9811703 | 1604 | } |
24b84912 | 1605 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1606 | if (blkaddr == NULL_ADDR) { |
1607 | prealloc++; | |
1608 | last_ofs_in_node = dn.ofs_in_node; | |
1609 | } | |
24b84912 | 1610 | } else { |
0a4daae5 JK |
1611 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1612 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1613 | err = __allocate_data_block(&dn, |
1614 | map->m_seg_type); | |
d4dd19ec JK |
1615 | if (!err) { |
1616 | if (flag == F2FS_GET_BLOCK_PRE_DIO) | |
1617 | file_need_truncate(inode); | |
91942321 | 1618 | set_inode_flag(inode, FI_APPEND_WRITE); |
d4dd19ec | 1619 | } |
24b84912 | 1620 | } |
973163fc | 1621 | if (err) |
4fe71e88 | 1622 | goto sync_out; |
3f2be043 | 1623 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1624 | blkaddr = dn.data_blkaddr; |
973163fc | 1625 | } else { |
bbe1da7e CY |
1626 | if (f2fs_compressed_file(inode) && |
1627 | f2fs_sanity_check_cluster(&dn) && | |
1628 | (flag != F2FS_GET_BLOCK_FIEMAP || | |
1629 | IS_ENABLED(CONFIG_F2FS_CHECK_FS))) { | |
1630 | err = -EFSCORRUPTED; | |
95fa90c9 CY |
1631 | f2fs_handle_error(sbi, |
1632 | ERROR_CORRUPTED_CLUSTER); | |
bbe1da7e CY |
1633 | goto sync_out; |
1634 | } | |
43473f96 CY |
1635 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1636 | map->m_pblk = 0; | |
1637 | goto sync_out; | |
1638 | } | |
c4020b2d CY |
1639 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1640 | goto sync_out; | |
da85985c CY |
1641 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1642 | blkaddr == NULL_ADDR) { | |
1643 | if (map->m_next_pgofs) | |
1644 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1645 | goto sync_out; |
da85985c | 1646 | } |
f3d98e74 CY |
1647 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1648 | /* for defragment case */ | |
1649 | if (map->m_next_pgofs) | |
1650 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1651 | goto sync_out; |
f3d98e74 | 1652 | } |
e2b4e2bc | 1653 | } |
e2b4e2bc | 1654 | } |
eb47b800 | 1655 | |
46008c6d CY |
1656 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1657 | goto skip; | |
1658 | ||
71f2c820 CY |
1659 | if (map->m_multidev_dio) |
1660 | bidx = f2fs_target_device_index(sbi, blkaddr); | |
1661 | ||
4fe71e88 CY |
1662 | if (map->m_len == 0) { |
1663 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1664 | if (blkaddr == NEW_ADDR) | |
1665 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1666 | map->m_flags |= F2FS_MAP_MAPPED; | |
1667 | ||
1668 | map->m_pblk = blkaddr; | |
1669 | map->m_len = 1; | |
71f2c820 CY |
1670 | |
1671 | if (map->m_multidev_dio) | |
1672 | map->m_bdev = FDEV(bidx).bdev; | |
4fe71e88 CY |
1673 | } else if ((map->m_pblk != NEW_ADDR && |
1674 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1675 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1676 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
71f2c820 CY |
1677 | if (map->m_multidev_dio && map->m_bdev != FDEV(bidx).bdev) |
1678 | goto sync_out; | |
4fe71e88 CY |
1679 | ofs++; |
1680 | map->m_len++; | |
1681 | } else { | |
1682 | goto sync_out; | |
1683 | } | |
bfad7c2d | 1684 | |
46008c6d | 1685 | skip: |
bfad7c2d JK |
1686 | dn.ofs_in_node++; |
1687 | pgofs++; | |
1688 | ||
46008c6d CY |
1689 | /* preallocate blocks in batch for one dnode page */ |
1690 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1691 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1692 | |
46008c6d | 1693 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1694 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1695 | if (err) |
1696 | goto sync_out; | |
bfad7c2d | 1697 | |
46008c6d CY |
1698 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1699 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1700 | err = -ENOSPC; | |
1701 | goto sync_out; | |
3104af35 | 1702 | } |
46008c6d CY |
1703 | dn.ofs_in_node = end_offset; |
1704 | } | |
1705 | ||
1706 | if (pgofs >= end) | |
1707 | goto sync_out; | |
1708 | else if (dn.ofs_in_node < end_offset) | |
1709 | goto next_block; | |
1710 | ||
c4020b2d CY |
1711 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1712 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1713 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1714 | ||
e7547dac | 1715 | f2fs_update_read_extent_cache_range(&dn, |
c4020b2d CY |
1716 | start_pgofs, map->m_pblk + ofs, |
1717 | map->m_len - ofs); | |
1718 | } | |
1719 | } | |
1720 | ||
46008c6d CY |
1721 | f2fs_put_dnode(&dn); |
1722 | ||
f9d6d059 | 1723 | if (map->m_may_create) { |
0ef81833 | 1724 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1725 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1726 | } |
46008c6d | 1727 | goto next_dnode; |
7df3a431 | 1728 | |
bfad7c2d | 1729 | sync_out: |
1e78e8bd | 1730 | |
71f2c820 CY |
1731 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) { |
1732 | /* | |
1733 | * for hardware encryption, but to avoid potential issue | |
1734 | * in future | |
1735 | */ | |
1e78e8bd ST |
1736 | f2fs_wait_on_block_writeback_range(inode, |
1737 | map->m_pblk, map->m_len); | |
1738 | ||
71f2c820 CY |
1739 | if (map->m_multidev_dio) { |
1740 | block_t blk_addr = map->m_pblk; | |
1741 | ||
1742 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1743 | ||
1744 | map->m_bdev = FDEV(bidx).bdev; | |
1745 | map->m_pblk -= FDEV(bidx).start_blk; | |
1746 | ||
1747 | if (map->m_may_create) | |
1748 | f2fs_update_device_state(sbi, inode->i_ino, | |
1749 | blk_addr, map->m_len); | |
1750 | ||
1751 | f2fs_bug_on(sbi, blk_addr + map->m_len > | |
1752 | FDEV(bidx).end_blk + 1); | |
1753 | } | |
1754 | } | |
1755 | ||
c4020b2d CY |
1756 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1757 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1758 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1759 | ||
e7547dac | 1760 | f2fs_update_read_extent_cache_range(&dn, |
c4020b2d CY |
1761 | start_pgofs, map->m_pblk + ofs, |
1762 | map->m_len - ofs); | |
1763 | } | |
1764 | if (map->m_next_extent) | |
1765 | *map->m_next_extent = pgofs + 1; | |
1766 | } | |
eb47b800 | 1767 | f2fs_put_dnode(&dn); |
bfad7c2d | 1768 | unlock_out: |
f9d6d059 | 1769 | if (map->m_may_create) { |
0ef81833 | 1770 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1771 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1772 | } |
bfad7c2d | 1773 | out: |
71f2c820 | 1774 | trace_f2fs_map_blocks(inode, map, create, flag, err); |
bfad7c2d | 1775 | return err; |
eb47b800 JK |
1776 | } |
1777 | ||
b91050a8 HL |
1778 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1779 | { | |
1780 | struct f2fs_map_blocks map; | |
1781 | block_t last_lblk; | |
1782 | int err; | |
1783 | ||
1784 | if (pos + len > i_size_read(inode)) | |
1785 | return false; | |
1786 | ||
1787 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1788 | map.m_next_pgofs = NULL; | |
1789 | map.m_next_extent = NULL; | |
1790 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1791 | map.m_may_create = false; |
b91050a8 HL |
1792 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1793 | ||
1794 | while (map.m_lblk < last_lblk) { | |
1795 | map.m_len = last_lblk - map.m_lblk; | |
1796 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1797 | if (err || map.m_len == 0) | |
1798 | return false; | |
1799 | map.m_lblk += map.m_len; | |
1800 | } | |
1801 | return true; | |
1802 | } | |
1803 | ||
43b9d4b4 JK |
1804 | static inline u64 bytes_to_blks(struct inode *inode, u64 bytes) |
1805 | { | |
1806 | return (bytes >> inode->i_blkbits); | |
1807 | } | |
1808 | ||
1809 | static inline u64 blks_to_bytes(struct inode *inode, u64 blks) | |
1810 | { | |
1811 | return (blks << inode->i_blkbits); | |
1812 | } | |
1813 | ||
442a9dbd CY |
1814 | static int f2fs_xattr_fiemap(struct inode *inode, |
1815 | struct fiemap_extent_info *fieinfo) | |
1816 | { | |
1817 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1818 | struct page *page; | |
1819 | struct node_info ni; | |
1820 | __u64 phys = 0, len; | |
1821 | __u32 flags; | |
1822 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1823 | int err = 0; | |
1824 | ||
1825 | if (f2fs_has_inline_xattr(inode)) { | |
1826 | int offset; | |
1827 | ||
1828 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1829 | inode->i_ino, false); | |
1830 | if (!page) | |
1831 | return -ENOMEM; | |
1832 | ||
a9419b63 | 1833 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); |
7735730d CY |
1834 | if (err) { |
1835 | f2fs_put_page(page, 1); | |
1836 | return err; | |
1837 | } | |
442a9dbd | 1838 | |
6cbfcab5 | 1839 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1840 | offset = offsetof(struct f2fs_inode, i_addr) + |
1841 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1842 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1843 | |
1844 | phys += offset; | |
1845 | len = inline_xattr_size(inode); | |
1846 | ||
1847 | f2fs_put_page(page, 1); | |
1848 | ||
1849 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1850 | ||
1851 | if (!xnid) | |
1852 | flags |= FIEMAP_EXTENT_LAST; | |
1853 | ||
1854 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
dd5a09bd | 1855 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
ca7efd71 | 1856 | if (err) |
442a9dbd CY |
1857 | return err; |
1858 | } | |
1859 | ||
1860 | if (xnid) { | |
1861 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1862 | if (!page) | |
1863 | return -ENOMEM; | |
1864 | ||
a9419b63 | 1865 | err = f2fs_get_node_info(sbi, xnid, &ni, false); |
7735730d CY |
1866 | if (err) { |
1867 | f2fs_put_page(page, 1); | |
1868 | return err; | |
1869 | } | |
442a9dbd | 1870 | |
6cbfcab5 | 1871 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1872 | len = inode->i_sb->s_blocksize; |
1873 | ||
1874 | f2fs_put_page(page, 1); | |
1875 | ||
1876 | flags = FIEMAP_EXTENT_LAST; | |
1877 | } | |
1878 | ||
dd5a09bd | 1879 | if (phys) { |
442a9dbd | 1880 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); |
dd5a09bd CY |
1881 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
1882 | } | |
442a9dbd CY |
1883 | |
1884 | return (err < 0 ? err : 0); | |
1885 | } | |
1886 | ||
bf38fbad CY |
1887 | static loff_t max_inode_blocks(struct inode *inode) |
1888 | { | |
1889 | loff_t result = ADDRS_PER_INODE(inode); | |
1890 | loff_t leaf_count = ADDRS_PER_BLOCK(inode); | |
1891 | ||
1892 | /* two direct node blocks */ | |
1893 | result += (leaf_count * 2); | |
1894 | ||
1895 | /* two indirect node blocks */ | |
1896 | leaf_count *= NIDS_PER_BLOCK; | |
1897 | result += (leaf_count * 2); | |
1898 | ||
1899 | /* one double indirect node block */ | |
1900 | leaf_count *= NIDS_PER_BLOCK; | |
1901 | result += leaf_count; | |
1902 | ||
1903 | return result; | |
1904 | } | |
1905 | ||
9ab70134 JK |
1906 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1907 | u64 start, u64 len) | |
1908 | { | |
b876f4c9 | 1909 | struct f2fs_map_blocks map; |
7f63eb77 | 1910 | sector_t start_blk, last_blk; |
da85985c | 1911 | pgoff_t next_pgofs; |
7f63eb77 JK |
1912 | u64 logical = 0, phys = 0, size = 0; |
1913 | u32 flags = 0; | |
7f63eb77 | 1914 | int ret = 0; |
093f0bac | 1915 | bool compr_cluster = false, compr_appended; |
bf38fbad | 1916 | unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; |
093f0bac | 1917 | unsigned int count_in_cluster = 0; |
0bb2045c | 1918 | loff_t maxbytes; |
7f63eb77 | 1919 | |
c4020b2d CY |
1920 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1921 | ret = f2fs_precache_extents(inode); | |
1922 | if (ret) | |
1923 | return ret; | |
1924 | } | |
1925 | ||
45dd052e | 1926 | ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1927 | if (ret) |
1928 | return ret; | |
1929 | ||
f1b43d4c CY |
1930 | inode_lock(inode); |
1931 | ||
0bb2045c CX |
1932 | maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS; |
1933 | if (start > maxbytes) { | |
1934 | ret = -EFBIG; | |
1935 | goto out; | |
1936 | } | |
1937 | ||
1938 | if (len > maxbytes || (maxbytes - len) < start) | |
1939 | len = maxbytes - start; | |
1940 | ||
442a9dbd CY |
1941 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1942 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1943 | goto out; | |
1944 | } | |
1945 | ||
7975f349 | 1946 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1947 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1948 | if (ret != -EAGAIN) | |
f1b43d4c | 1949 | goto out; |
67f8cf3c JK |
1950 | } |
1951 | ||
6cbfcab5 JK |
1952 | if (bytes_to_blks(inode, len) == 0) |
1953 | len = blks_to_bytes(inode, 1); | |
7f63eb77 | 1954 | |
6cbfcab5 JK |
1955 | start_blk = bytes_to_blks(inode, start); |
1956 | last_blk = bytes_to_blks(inode, start + len - 1); | |
9a950d52 | 1957 | |
7f63eb77 | 1958 | next: |
b876f4c9 JK |
1959 | memset(&map, 0, sizeof(map)); |
1960 | map.m_lblk = start_blk; | |
1961 | map.m_len = bytes_to_blks(inode, len); | |
1962 | map.m_next_pgofs = &next_pgofs; | |
1963 | map.m_seg_type = NO_CHECK_TYPE; | |
7f63eb77 | 1964 | |
093f0bac DJ |
1965 | if (compr_cluster) { |
1966 | map.m_lblk += 1; | |
1967 | map.m_len = cluster_size - count_in_cluster; | |
1968 | } | |
bf38fbad | 1969 | |
b876f4c9 | 1970 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
7f63eb77 JK |
1971 | if (ret) |
1972 | goto out; | |
1973 | ||
1974 | /* HOLE */ | |
093f0bac | 1975 | if (!compr_cluster && !(map.m_flags & F2FS_MAP_FLAGS)) { |
da85985c | 1976 | start_blk = next_pgofs; |
58736fa6 | 1977 | |
6cbfcab5 | 1978 | if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode, |
bf38fbad | 1979 | max_inode_blocks(inode))) |
9a950d52 | 1980 | goto prep_next; |
58736fa6 | 1981 | |
9a950d52 FL |
1982 | flags |= FIEMAP_EXTENT_LAST; |
1983 | } | |
7f63eb77 | 1984 | |
093f0bac DJ |
1985 | compr_appended = false; |
1986 | /* In a case of compressed cluster, append this to the last extent */ | |
1987 | if (compr_cluster && ((map.m_flags & F2FS_MAP_UNWRITTEN) || | |
1988 | !(map.m_flags & F2FS_MAP_FLAGS))) { | |
1989 | compr_appended = true; | |
1990 | goto skip_fill; | |
1991 | } | |
1992 | ||
da5af127 | 1993 | if (size) { |
0953fe86 | 1994 | flags |= FIEMAP_EXTENT_MERGED; |
62230e0d | 1995 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1996 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1997 | ||
9a950d52 FL |
1998 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1999 | phys, size, flags); | |
dd5a09bd | 2000 | trace_f2fs_fiemap(inode, logical, phys, size, flags, ret); |
bf38fbad CY |
2001 | if (ret) |
2002 | goto out; | |
2003 | size = 0; | |
da5af127 | 2004 | } |
7f63eb77 | 2005 | |
bf38fbad | 2006 | if (start_blk > last_blk) |
9a950d52 | 2007 | goto out; |
7f63eb77 | 2008 | |
093f0bac | 2009 | skip_fill: |
b876f4c9 | 2010 | if (map.m_pblk == COMPRESS_ADDR) { |
bf38fbad | 2011 | compr_cluster = true; |
093f0bac DJ |
2012 | count_in_cluster = 1; |
2013 | } else if (compr_appended) { | |
2014 | unsigned int appended_blks = cluster_size - | |
2015 | count_in_cluster + 1; | |
2016 | size += blks_to_bytes(inode, appended_blks); | |
2017 | start_blk += appended_blks; | |
2018 | compr_cluster = false; | |
2019 | } else { | |
2020 | logical = blks_to_bytes(inode, start_blk); | |
2021 | phys = __is_valid_data_blkaddr(map.m_pblk) ? | |
2022 | blks_to_bytes(inode, map.m_pblk) : 0; | |
2023 | size = blks_to_bytes(inode, map.m_len); | |
2024 | flags = 0; | |
2025 | ||
2026 | if (compr_cluster) { | |
2027 | flags = FIEMAP_EXTENT_ENCODED; | |
2028 | count_in_cluster += map.m_len; | |
2029 | if (count_in_cluster == cluster_size) { | |
2030 | compr_cluster = false; | |
2031 | size += blks_to_bytes(inode, 1); | |
2032 | } | |
2033 | } else if (map.m_flags & F2FS_MAP_UNWRITTEN) { | |
2034 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
2035 | } | |
7f63eb77 | 2036 | |
093f0bac DJ |
2037 | start_blk += bytes_to_blks(inode, size); |
2038 | } | |
7f63eb77 | 2039 | |
9a950d52 | 2040 | prep_next: |
7f63eb77 JK |
2041 | cond_resched(); |
2042 | if (fatal_signal_pending(current)) | |
2043 | ret = -EINTR; | |
2044 | else | |
2045 | goto next; | |
2046 | out: | |
2047 | if (ret == 1) | |
2048 | ret = 0; | |
2049 | ||
5955102c | 2050 | inode_unlock(inode); |
7f63eb77 | 2051 | return ret; |
9ab70134 JK |
2052 | } |
2053 | ||
95ae251f EB |
2054 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
2055 | { | |
2056 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
2057 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
2058 | return inode->i_sb->s_maxbytes; | |
2059 | ||
2060 | return i_size_read(inode); | |
2061 | } | |
2062 | ||
2df0ab04 CY |
2063 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
2064 | unsigned nr_pages, | |
2065 | struct f2fs_map_blocks *map, | |
2066 | struct bio **bio_ret, | |
2067 | sector_t *last_block_in_bio, | |
2068 | bool is_readahead) | |
2069 | { | |
2070 | struct bio *bio = *bio_ret; | |
43b9d4b4 | 2071 | const unsigned blocksize = blks_to_bytes(inode, 1); |
2df0ab04 CY |
2072 | sector_t block_in_file; |
2073 | sector_t last_block; | |
2074 | sector_t last_block_in_file; | |
2075 | sector_t block_nr; | |
2076 | int ret = 0; | |
2077 | ||
4969c06a | 2078 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 2079 | last_block = block_in_file + nr_pages; |
43b9d4b4 JK |
2080 | last_block_in_file = bytes_to_blks(inode, |
2081 | f2fs_readpage_limit(inode) + blocksize - 1); | |
2df0ab04 CY |
2082 | if (last_block > last_block_in_file) |
2083 | last_block = last_block_in_file; | |
2084 | ||
2085 | /* just zeroing out page which is beyond EOF */ | |
2086 | if (block_in_file >= last_block) | |
2087 | goto zero_out; | |
2088 | /* | |
2089 | * Map blocks using the previous result first. | |
2090 | */ | |
2091 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
2092 | block_in_file > map->m_lblk && | |
2093 | block_in_file < (map->m_lblk + map->m_len)) | |
2094 | goto got_it; | |
2095 | ||
2096 | /* | |
2097 | * Then do more f2fs_map_blocks() calls until we are | |
2098 | * done with this page. | |
2099 | */ | |
2100 | map->m_lblk = block_in_file; | |
2101 | map->m_len = last_block - block_in_file; | |
2102 | ||
2103 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
2104 | if (ret) | |
2105 | goto out; | |
2106 | got_it: | |
2107 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
2108 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
2109 | SetPageMappedToDisk(page); | |
2110 | ||
2df0ab04 | 2111 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, |
93770ab7 | 2112 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 2113 | ret = -EFSCORRUPTED; |
95fa90c9 CY |
2114 | f2fs_handle_error(F2FS_I_SB(inode), |
2115 | ERROR_INVALID_BLKADDR); | |
2df0ab04 CY |
2116 | goto out; |
2117 | } | |
2118 | } else { | |
2119 | zero_out: | |
2120 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
2121 | if (f2fs_need_verity(inode, page->index) && |
2122 | !fsverity_verify_page(page)) { | |
2123 | ret = -EIO; | |
2124 | goto out; | |
2125 | } | |
2df0ab04 CY |
2126 | if (!PageUptodate(page)) |
2127 | SetPageUptodate(page); | |
2128 | unlock_page(page); | |
2129 | goto out; | |
2130 | } | |
2131 | ||
2132 | /* | |
2133 | * This page will go to BIO. Do we need to send this | |
2134 | * BIO off first? | |
2135 | */ | |
27aacd28 ST |
2136 | if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio, |
2137 | *last_block_in_bio, block_nr) || | |
2138 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
2df0ab04 CY |
2139 | submit_and_realloc: |
2140 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2141 | bio = NULL; | |
2142 | } | |
2143 | if (bio == NULL) { | |
2144 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
0683728a | 2145 | is_readahead ? REQ_RAHEAD : 0, page->index, |
7f59b277 | 2146 | false); |
2df0ab04 CY |
2147 | if (IS_ERR(bio)) { |
2148 | ret = PTR_ERR(bio); | |
2149 | bio = NULL; | |
2150 | goto out; | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | /* | |
2155 | * If the page is under writeback, we need to wait for | |
2156 | * its completion to see the correct decrypted data. | |
2157 | */ | |
2158 | f2fs_wait_on_block_writeback(inode, block_nr); | |
2159 | ||
2160 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2161 | goto submit_and_realloc; | |
2162 | ||
2163 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
34a23525 CY |
2164 | f2fs_update_iostat(F2FS_I_SB(inode), NULL, FS_DATA_READ_IO, |
2165 | F2FS_BLKSIZE); | |
2df0ab04 CY |
2166 | *last_block_in_bio = block_nr; |
2167 | goto out; | |
2df0ab04 CY |
2168 | out: |
2169 | *bio_ret = bio; | |
2170 | return ret; | |
2171 | } | |
2172 | ||
4c8ff709 CY |
2173 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2174 | int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, | |
2175 | unsigned nr_pages, sector_t *last_block_in_bio, | |
0683728a | 2176 | bool is_readahead, bool for_write) |
4c8ff709 CY |
2177 | { |
2178 | struct dnode_of_data dn; | |
2179 | struct inode *inode = cc->inode; | |
2180 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2181 | struct bio *bio = *bio_ret; | |
2182 | unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; | |
2183 | sector_t last_block_in_file; | |
43b9d4b4 | 2184 | const unsigned blocksize = blks_to_bytes(inode, 1); |
4c8ff709 | 2185 | struct decompress_io_ctx *dic = NULL; |
fe59109a | 2186 | struct extent_info ei = {}; |
94afd6d6 | 2187 | bool from_dnode = true; |
4c8ff709 CY |
2188 | int i; |
2189 | int ret = 0; | |
2190 | ||
2191 | f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); | |
2192 | ||
43b9d4b4 JK |
2193 | last_block_in_file = bytes_to_blks(inode, |
2194 | f2fs_readpage_limit(inode) + blocksize - 1); | |
4c8ff709 CY |
2195 | |
2196 | /* get rid of pages beyond EOF */ | |
2197 | for (i = 0; i < cc->cluster_size; i++) { | |
2198 | struct page *page = cc->rpages[i]; | |
2199 | ||
2200 | if (!page) | |
2201 | continue; | |
2202 | if ((sector_t)page->index >= last_block_in_file) { | |
2203 | zero_user_segment(page, 0, PAGE_SIZE); | |
2204 | if (!PageUptodate(page)) | |
2205 | SetPageUptodate(page); | |
2206 | } else if (!PageUptodate(page)) { | |
2207 | continue; | |
2208 | } | |
2209 | unlock_page(page); | |
9605f75c JK |
2210 | if (for_write) |
2211 | put_page(page); | |
4c8ff709 CY |
2212 | cc->rpages[i] = NULL; |
2213 | cc->nr_rpages--; | |
2214 | } | |
2215 | ||
2216 | /* we are done since all pages are beyond EOF */ | |
2217 | if (f2fs_cluster_is_empty(cc)) | |
2218 | goto out; | |
2219 | ||
e7547dac | 2220 | if (f2fs_lookup_read_extent_cache(inode, start_idx, &ei)) |
94afd6d6 CY |
2221 | from_dnode = false; |
2222 | ||
2223 | if (!from_dnode) | |
2224 | goto skip_reading_dnode; | |
2225 | ||
4c8ff709 CY |
2226 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
2227 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
2228 | if (ret) | |
2229 | goto out; | |
2230 | ||
a86d27dd | 2231 | f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); |
4c8ff709 | 2232 | |
94afd6d6 | 2233 | skip_reading_dnode: |
4c8ff709 CY |
2234 | for (i = 1; i < cc->cluster_size; i++) { |
2235 | block_t blkaddr; | |
2236 | ||
94afd6d6 CY |
2237 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2238 | dn.ofs_in_node + i) : | |
2239 | ei.blk + i - 1; | |
4c8ff709 CY |
2240 | |
2241 | if (!__is_valid_data_blkaddr(blkaddr)) | |
2242 | break; | |
2243 | ||
2244 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
2245 | ret = -EFAULT; | |
2246 | goto out_put_dnode; | |
2247 | } | |
2248 | cc->nr_cpages++; | |
94afd6d6 CY |
2249 | |
2250 | if (!from_dnode && i >= ei.c_len) | |
2251 | break; | |
4c8ff709 CY |
2252 | } |
2253 | ||
2254 | /* nothing to decompress */ | |
2255 | if (cc->nr_cpages == 0) { | |
2256 | ret = 0; | |
2257 | goto out_put_dnode; | |
2258 | } | |
2259 | ||
2260 | dic = f2fs_alloc_dic(cc); | |
2261 | if (IS_ERR(dic)) { | |
2262 | ret = PTR_ERR(dic); | |
2263 | goto out_put_dnode; | |
2264 | } | |
2265 | ||
6ce19aff | 2266 | for (i = 0; i < cc->nr_cpages; i++) { |
4c8ff709 CY |
2267 | struct page *page = dic->cpages[i]; |
2268 | block_t blkaddr; | |
7f59b277 | 2269 | struct bio_post_read_ctx *ctx; |
4c8ff709 | 2270 | |
94afd6d6 CY |
2271 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2272 | dn.ofs_in_node + i + 1) : | |
2273 | ei.blk + i; | |
4c8ff709 | 2274 | |
6ce19aff CY |
2275 | f2fs_wait_on_block_writeback(inode, blkaddr); |
2276 | ||
2277 | if (f2fs_load_compressed_page(sbi, page, blkaddr)) { | |
2278 | if (atomic_dec_and_test(&dic->remaining_pages)) | |
bff139b4 | 2279 | f2fs_decompress_cluster(dic, true); |
6ce19aff CY |
2280 | continue; |
2281 | } | |
2282 | ||
27aacd28 ST |
2283 | if (bio && (!page_is_mergeable(sbi, bio, |
2284 | *last_block_in_bio, blkaddr) || | |
2285 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
4c8ff709 CY |
2286 | submit_and_realloc: |
2287 | __submit_bio(sbi, bio, DATA); | |
2288 | bio = NULL; | |
2289 | } | |
2290 | ||
2291 | if (!bio) { | |
2292 | bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, | |
2293 | is_readahead ? REQ_RAHEAD : 0, | |
7f59b277 | 2294 | page->index, for_write); |
4c8ff709 CY |
2295 | if (IS_ERR(bio)) { |
2296 | ret = PTR_ERR(bio); | |
bff139b4 | 2297 | f2fs_decompress_end_io(dic, ret, true); |
4c8ff709 | 2298 | f2fs_put_dnode(&dn); |
f3494345 | 2299 | *bio_ret = NULL; |
4c8ff709 CY |
2300 | return ret; |
2301 | } | |
2302 | } | |
2303 | ||
4c8ff709 CY |
2304 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
2305 | goto submit_and_realloc; | |
2306 | ||
a4b68176 | 2307 | ctx = get_post_read_ctx(bio); |
7f59b277 EB |
2308 | ctx->enabled_steps |= STEP_DECOMPRESS; |
2309 | refcount_inc(&dic->refcnt); | |
03382f1a | 2310 | |
4c8ff709 | 2311 | inc_page_count(sbi, F2FS_RD_DATA); |
34a23525 | 2312 | f2fs_update_iostat(sbi, inode, FS_DATA_READ_IO, F2FS_BLKSIZE); |
4c8ff709 CY |
2313 | *last_block_in_bio = blkaddr; |
2314 | } | |
2315 | ||
94afd6d6 CY |
2316 | if (from_dnode) |
2317 | f2fs_put_dnode(&dn); | |
4c8ff709 CY |
2318 | |
2319 | *bio_ret = bio; | |
2320 | return 0; | |
2321 | ||
2322 | out_put_dnode: | |
94afd6d6 CY |
2323 | if (from_dnode) |
2324 | f2fs_put_dnode(&dn); | |
4c8ff709 | 2325 | out: |
7f59b277 EB |
2326 | for (i = 0; i < cc->cluster_size; i++) { |
2327 | if (cc->rpages[i]) { | |
2328 | ClearPageUptodate(cc->rpages[i]); | |
7f59b277 EB |
2329 | unlock_page(cc->rpages[i]); |
2330 | } | |
2331 | } | |
4c8ff709 CY |
2332 | *bio_ret = bio; |
2333 | return ret; | |
2334 | } | |
2335 | #endif | |
2336 | ||
f1e88660 JK |
2337 | /* |
2338 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
2339 | * Major change was from block_size == page_size in f2fs by default. | |
2340 | */ | |
e20a7693 | 2341 | static int f2fs_mpage_readpages(struct inode *inode, |
23323196 | 2342 | struct readahead_control *rac, struct page *page) |
f1e88660 JK |
2343 | { |
2344 | struct bio *bio = NULL; | |
f1e88660 | 2345 | sector_t last_block_in_bio = 0; |
f1e88660 | 2346 | struct f2fs_map_blocks map; |
4c8ff709 CY |
2347 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2348 | struct compress_ctx cc = { | |
2349 | .inode = inode, | |
2350 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2351 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2352 | .cluster_idx = NULL_CLUSTER, | |
2353 | .rpages = NULL, | |
2354 | .cpages = NULL, | |
2355 | .nr_rpages = 0, | |
2356 | .nr_cpages = 0, | |
2357 | }; | |
a2649315 | 2358 | pgoff_t nc_cluster_idx = NULL_CLUSTER; |
4c8ff709 | 2359 | #endif |
23323196 | 2360 | unsigned nr_pages = rac ? readahead_count(rac) : 1; |
4c8ff709 | 2361 | unsigned max_nr_pages = nr_pages; |
2df0ab04 | 2362 | int ret = 0; |
f1e88660 JK |
2363 | |
2364 | map.m_pblk = 0; | |
2365 | map.m_lblk = 0; | |
2366 | map.m_len = 0; | |
2367 | map.m_flags = 0; | |
da85985c | 2368 | map.m_next_pgofs = NULL; |
c4020b2d | 2369 | map.m_next_extent = NULL; |
d5097be5 | 2370 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 2371 | map.m_may_create = false; |
f1e88660 | 2372 | |
736c0a74 | 2373 | for (; nr_pages; nr_pages--) { |
23323196 MWO |
2374 | if (rac) { |
2375 | page = readahead_page(rac); | |
a83d50bc | 2376 | prefetchw(&page->flags); |
f1e88660 JK |
2377 | } |
2378 | ||
4c8ff709 CY |
2379 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2380 | if (f2fs_compressed_file(inode)) { | |
2381 | /* there are remained comressed pages, submit them */ | |
2382 | if (!f2fs_cluster_can_merge_page(&cc, page->index)) { | |
2383 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2384 | max_nr_pages, | |
2385 | &last_block_in_bio, | |
23323196 | 2386 | rac != NULL, false); |
8bfbfb0d | 2387 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2388 | if (ret) |
2389 | goto set_error_page; | |
2390 | } | |
a2649315 FC |
2391 | if (cc.cluster_idx == NULL_CLUSTER) { |
2392 | if (nc_cluster_idx == | |
2393 | page->index >> cc.log_cluster_size) { | |
2394 | goto read_single_page; | |
2395 | } | |
4c8ff709 | 2396 | |
a2649315 FC |
2397 | ret = f2fs_is_compressed_cluster(inode, page->index); |
2398 | if (ret < 0) | |
2399 | goto set_error_page; | |
2400 | else if (!ret) { | |
2401 | nc_cluster_idx = | |
2402 | page->index >> cc.log_cluster_size; | |
2403 | goto read_single_page; | |
2404 | } | |
4c8ff709 | 2405 | |
a2649315 FC |
2406 | nc_cluster_idx = NULL_CLUSTER; |
2407 | } | |
4c8ff709 CY |
2408 | ret = f2fs_init_compress_ctx(&cc); |
2409 | if (ret) | |
2410 | goto set_error_page; | |
2411 | ||
2412 | f2fs_compress_ctx_add_page(&cc, page); | |
2413 | ||
2414 | goto next_page; | |
2415 | } | |
2416 | read_single_page: | |
2417 | #endif | |
2418 | ||
2419 | ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, | |
23323196 | 2420 | &bio, &last_block_in_bio, rac); |
2df0ab04 | 2421 | if (ret) { |
4c8ff709 CY |
2422 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2423 | set_error_page: | |
2424 | #endif | |
09cbfeaf | 2425 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 2426 | unlock_page(page); |
f1e88660 | 2427 | } |
23323196 | 2428 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
f1e88660 | 2429 | next_page: |
23323196 MWO |
2430 | #endif |
2431 | if (rac) | |
09cbfeaf | 2432 | put_page(page); |
4c8ff709 CY |
2433 | |
2434 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2435 | if (f2fs_compressed_file(inode)) { | |
2436 | /* last page */ | |
2437 | if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) { | |
2438 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2439 | max_nr_pages, | |
2440 | &last_block_in_bio, | |
23323196 | 2441 | rac != NULL, false); |
8bfbfb0d | 2442 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2443 | } |
2444 | } | |
2445 | #endif | |
f1e88660 | 2446 | } |
f1e88660 | 2447 | if (bio) |
4fc29c1a | 2448 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
23323196 | 2449 | return ret; |
f1e88660 JK |
2450 | } |
2451 | ||
be05584f | 2452 | static int f2fs_read_data_folio(struct file *file, struct folio *folio) |
eb47b800 | 2453 | { |
be05584f | 2454 | struct page *page = &folio->page; |
4969c06a | 2455 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 2456 | int ret = -EAGAIN; |
9ffe0fb5 | 2457 | |
c20e89cd CY |
2458 | trace_f2fs_readpage(page, DATA); |
2459 | ||
4c8ff709 CY |
2460 | if (!f2fs_is_compress_backend_ready(inode)) { |
2461 | unlock_page(page); | |
2462 | return -EOPNOTSUPP; | |
2463 | } | |
2464 | ||
e1c42045 | 2465 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
2466 | if (f2fs_has_inline_data(inode)) |
2467 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 2468 | if (ret == -EAGAIN) |
e20a7693 | 2469 | ret = f2fs_mpage_readpages(inode, NULL, page); |
9ffe0fb5 | 2470 | return ret; |
eb47b800 JK |
2471 | } |
2472 | ||
23323196 | 2473 | static void f2fs_readahead(struct readahead_control *rac) |
eb47b800 | 2474 | { |
23323196 | 2475 | struct inode *inode = rac->mapping->host; |
b8c29400 | 2476 | |
23323196 | 2477 | trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac)); |
9ffe0fb5 | 2478 | |
4c8ff709 | 2479 | if (!f2fs_is_compress_backend_ready(inode)) |
23323196 | 2480 | return; |
4c8ff709 | 2481 | |
704528d8 | 2482 | /* If the file has inline data, skip readahead */ |
9ffe0fb5 | 2483 | if (f2fs_has_inline_data(inode)) |
23323196 | 2484 | return; |
9ffe0fb5 | 2485 | |
e20a7693 | 2486 | f2fs_mpage_readpages(inode, rac, NULL); |
eb47b800 JK |
2487 | } |
2488 | ||
4c8ff709 | 2489 | int f2fs_encrypt_one_page(struct f2fs_io_info *fio) |
7eab0c0d HP |
2490 | { |
2491 | struct inode *inode = fio->page->mapping->host; | |
4c8ff709 | 2492 | struct page *mpage, *page; |
7eab0c0d HP |
2493 | gfp_t gfp_flags = GFP_NOFS; |
2494 | ||
1958593e | 2495 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
2496 | return 0; |
2497 | ||
4c8ff709 CY |
2498 | page = fio->compressed_page ? fio->compressed_page : fio->page; |
2499 | ||
6dbb1796 | 2500 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 2501 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d | 2502 | |
27aacd28 ST |
2503 | if (fscrypt_inode_uses_inline_crypto(inode)) |
2504 | return 0; | |
2505 | ||
7eab0c0d | 2506 | retry_encrypt: |
4c8ff709 CY |
2507 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, |
2508 | PAGE_SIZE, 0, gfp_flags); | |
6aa58d8a CY |
2509 | if (IS_ERR(fio->encrypted_page)) { |
2510 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
2511 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
2512 | f2fs_flush_merged_writes(fio->sbi); | |
4034247a | 2513 | memalloc_retry_wait(GFP_NOFS); |
6aa58d8a CY |
2514 | gfp_flags |= __GFP_NOFAIL; |
2515 | goto retry_encrypt; | |
2516 | } | |
2517 | return PTR_ERR(fio->encrypted_page); | |
2518 | } | |
7eab0c0d | 2519 | |
6aa58d8a CY |
2520 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
2521 | if (mpage) { | |
2522 | if (PageUptodate(mpage)) | |
2523 | memcpy(page_address(mpage), | |
2524 | page_address(fio->encrypted_page), PAGE_SIZE); | |
2525 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 2526 | } |
6aa58d8a | 2527 | return 0; |
7eab0c0d HP |
2528 | } |
2529 | ||
bb9e3bb8 CY |
2530 | static inline bool check_inplace_update_policy(struct inode *inode, |
2531 | struct f2fs_io_info *fio) | |
7eab0c0d | 2532 | { |
bb9e3bb8 CY |
2533 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2534 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 2535 | |
1018a546 CY |
2536 | if (policy & (0x1 << F2FS_IPU_HONOR_OPU_WRITE) && |
2537 | is_inode_flag_set(inode, FI_OPU_WRITE)) | |
2538 | return false; | |
bb9e3bb8 CY |
2539 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
2540 | return true; | |
4d57b86d | 2541 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
2542 | return true; |
2543 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
2544 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
2545 | return true; | |
4d57b86d | 2546 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
2547 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
2548 | return true; | |
2549 | ||
2550 | /* | |
2551 | * IPU for rewrite async pages | |
2552 | */ | |
2553 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
2554 | fio && fio->op == REQ_OP_WRITE && | |
2555 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 2556 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
2557 | return true; |
2558 | ||
2559 | /* this is only set during fdatasync */ | |
2560 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
2561 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
2562 | return true; | |
2563 | ||
4354994f DR |
2564 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2565 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2566 | return true; | |
2567 | ||
bb9e3bb8 CY |
2568 | return false; |
2569 | } | |
2570 | ||
4d57b86d | 2571 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 2572 | { |
859fca6b CY |
2573 | /* swap file is migrating in aligned write mode */ |
2574 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2575 | return false; | |
2576 | ||
1ad71a27 JK |
2577 | if (f2fs_is_pinned_file(inode)) |
2578 | return true; | |
bb9e3bb8 CY |
2579 | |
2580 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
f3b23c78 | 2581 | if (file_is_cold(inode) && !is_inode_flag_set(inode, FI_OPU_WRITE)) |
bb9e3bb8 CY |
2582 | return true; |
2583 | ||
2584 | return check_inplace_update_policy(inode, fio); | |
2585 | } | |
2586 | ||
4d57b86d | 2587 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
2588 | { |
2589 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2590 | ||
19bdba52 JK |
2591 | /* The below cases were checked when setting it. */ |
2592 | if (f2fs_is_pinned_file(inode)) | |
2593 | return false; | |
2594 | if (fio && is_sbi_flag_set(sbi, SBI_NEED_FSCK)) | |
2595 | return true; | |
b0332a0f | 2596 | if (f2fs_lfs_mode(sbi)) |
bb9e3bb8 CY |
2597 | return true; |
2598 | if (S_ISDIR(inode->i_mode)) | |
2599 | return true; | |
af033b2a CY |
2600 | if (IS_NOQUOTA(inode)) |
2601 | return true; | |
bb9e3bb8 CY |
2602 | if (f2fs_is_atomic_file(inode)) |
2603 | return true; | |
859fca6b CY |
2604 | |
2605 | /* swap file is migrating in aligned write mode */ | |
2606 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2607 | return true; | |
2608 | ||
1018a546 CY |
2609 | if (is_inode_flag_set(inode, FI_OPU_WRITE)) |
2610 | return true; | |
2611 | ||
bb9e3bb8 | 2612 | if (fio) { |
b763f3be | 2613 | if (page_private_gcing(fio->page)) |
bb9e3bb8 | 2614 | return true; |
b763f3be | 2615 | if (page_private_dummy(fio->page)) |
bb9e3bb8 | 2616 | return true; |
4354994f DR |
2617 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2618 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2619 | return true; | |
bb9e3bb8 CY |
2620 | } |
2621 | return false; | |
2622 | } | |
2623 | ||
7eab0c0d HP |
2624 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
2625 | { | |
2626 | struct inode *inode = fio->page->mapping->host; | |
2627 | ||
4d57b86d | 2628 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
2629 | return false; |
2630 | ||
4d57b86d | 2631 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
2632 | } |
2633 | ||
4d57b86d | 2634 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 2635 | { |
05ca3632 | 2636 | struct page *page = fio->page; |
eb47b800 | 2637 | struct inode *inode = page->mapping->host; |
eb47b800 | 2638 | struct dnode_of_data dn; |
94afd6d6 | 2639 | struct extent_info ei = {0, }; |
7735730d | 2640 | struct node_info ni; |
e959c8f5 | 2641 | bool ipu_force = false; |
eb47b800 JK |
2642 | int err = 0; |
2643 | ||
3db1de0e DJ |
2644 | /* Use COW inode to make dnode_of_data for atomic write */ |
2645 | if (f2fs_is_atomic_file(inode)) | |
2646 | set_new_dnode(&dn, F2FS_I(inode)->cow_inode, NULL, NULL, 0); | |
2647 | else | |
2648 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
2649 | ||
e959c8f5 | 2650 | if (need_inplace_update(fio) && |
e7547dac | 2651 | f2fs_lookup_read_extent_cache(inode, page->index, &ei)) { |
e959c8f5 | 2652 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; |
a817737e | 2653 | |
c9b60788 | 2654 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
95fa90c9 CY |
2655 | DATA_GENERIC_ENHANCE)) { |
2656 | f2fs_handle_error(fio->sbi, | |
2657 | ERROR_INVALID_BLKADDR); | |
10f966bb | 2658 | return -EFSCORRUPTED; |
95fa90c9 | 2659 | } |
c9b60788 CY |
2660 | |
2661 | ipu_force = true; | |
2662 | fio->need_lock = LOCK_DONE; | |
2663 | goto got_it; | |
e959c8f5 | 2664 | } |
279d6df2 | 2665 | |
d29460e5 JK |
2666 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2667 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2668 | return -EAGAIN; | |
279d6df2 | 2669 | |
4d57b86d | 2670 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2671 | if (err) |
279d6df2 | 2672 | goto out; |
eb47b800 | 2673 | |
28bc106b | 2674 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2675 | |
2676 | /* This page is already truncated */ | |
7a9d7548 | 2677 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2678 | ClearPageUptodate(page); |
b763f3be | 2679 | clear_page_private_gcing(page); |
eb47b800 | 2680 | goto out_writepage; |
2bca1e23 | 2681 | } |
e959c8f5 | 2682 | got_it: |
c9b60788 CY |
2683 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2684 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2685 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2686 | err = -EFSCORRUPTED; |
95fa90c9 | 2687 | f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR); |
c9b60788 CY |
2688 | goto out_writepage; |
2689 | } | |
3db1de0e | 2690 | |
eb47b800 JK |
2691 | /* |
2692 | * If current allocation needs SSR, | |
2693 | * it had better in-place writes for updated data. | |
2694 | */ | |
93770ab7 CY |
2695 | if (ipu_force || |
2696 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2697 | need_inplace_update(fio))) { |
4c8ff709 | 2698 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2699 | if (err) |
2700 | goto out_writepage; | |
2701 | ||
2702 | set_page_writeback(page); | |
17c50035 | 2703 | ClearPageError(page); |
279d6df2 | 2704 | f2fs_put_dnode(&dn); |
cc15620b | 2705 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2706 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2707 | err = f2fs_inplace_write_data(fio); |
6492a335 | 2708 | if (err) { |
27aacd28 | 2709 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
d2d0727b | 2710 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2711 | if (PageWriteback(page)) |
2712 | end_page_writeback(page); | |
cd23ffa9 CY |
2713 | } else { |
2714 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2715 | } |
7eab0c0d | 2716 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2717 | return err; |
eb47b800 | 2718 | } |
279d6df2 | 2719 | |
cc15620b JK |
2720 | if (fio->need_lock == LOCK_RETRY) { |
2721 | if (!f2fs_trylock_op(fio->sbi)) { | |
2722 | err = -EAGAIN; | |
2723 | goto out_writepage; | |
2724 | } | |
2725 | fio->need_lock = LOCK_REQ; | |
2726 | } | |
2727 | ||
a9419b63 | 2728 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni, false); |
7735730d CY |
2729 | if (err) |
2730 | goto out_writepage; | |
2731 | ||
2732 | fio->version = ni.version; | |
2733 | ||
4c8ff709 | 2734 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2735 | if (err) |
2736 | goto out_writepage; | |
2737 | ||
2738 | set_page_writeback(page); | |
17c50035 | 2739 | ClearPageError(page); |
cc15620b | 2740 | |
4c8ff709 CY |
2741 | if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) |
2742 | f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); | |
2743 | ||
279d6df2 | 2744 | /* LFS mode write path */ |
4d57b86d | 2745 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2746 | trace_f2fs_do_write_data_page(page, OPU); |
2747 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2748 | if (page->index == 0) | |
2749 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2750 | out_writepage: |
2751 | f2fs_put_dnode(&dn); | |
279d6df2 | 2752 | out: |
cc15620b | 2753 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2754 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2755 | return err; |
2756 | } | |
2757 | ||
4c8ff709 | 2758 | int f2fs_write_single_data_page(struct page *page, int *submitted, |
8648de2c CY |
2759 | struct bio **bio, |
2760 | sector_t *last_block, | |
b0af6d49 | 2761 | struct writeback_control *wbc, |
4c8ff709 | 2762 | enum iostat_type io_type, |
3afae09f CY |
2763 | int compr_blocks, |
2764 | bool allow_balance) | |
eb47b800 JK |
2765 | { |
2766 | struct inode *inode = page->mapping->host; | |
4081363f | 2767 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 | 2768 | loff_t i_size = i_size_read(inode); |
4c8ff709 | 2769 | const pgoff_t end_index = ((unsigned long long)i_size) |
09cbfeaf | 2770 | >> PAGE_SHIFT; |
1f0d5c91 | 2771 | loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2772 | unsigned offset = 0; |
39936837 | 2773 | bool need_balance_fs = false; |
eb47b800 | 2774 | int err = 0; |
458e6197 | 2775 | struct f2fs_io_info fio = { |
05ca3632 | 2776 | .sbi = sbi, |
39d787be | 2777 | .ino = inode->i_ino, |
458e6197 | 2778 | .type = DATA, |
04d328de | 2779 | .op = REQ_OP_WRITE, |
7637241e | 2780 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2781 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2782 | .page = page, |
4375a336 | 2783 | .encrypted_page = NULL, |
d68f735b | 2784 | .submitted = false, |
4c8ff709 | 2785 | .compr_blocks = compr_blocks, |
cc15620b | 2786 | .need_lock = LOCK_RETRY, |
0d5b9d81 | 2787 | .post_read = f2fs_post_read_required(inode), |
b0af6d49 | 2788 | .io_type = io_type, |
578c6478 | 2789 | .io_wbc = wbc, |
8648de2c CY |
2790 | .bio = bio, |
2791 | .last_block = last_block, | |
458e6197 | 2792 | }; |
eb47b800 | 2793 | |
ecda0de3 CY |
2794 | trace_f2fs_writepage(page, DATA); |
2795 | ||
db198ae0 CY |
2796 | /* we should bypass data pages to proceed the kworkder jobs */ |
2797 | if (unlikely(f2fs_cp_error(sbi))) { | |
2798 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2799 | /* |
2800 | * don't drop any dirty dentry pages for keeping lastest | |
2801 | * directory structure. | |
2802 | */ | |
2803 | if (S_ISDIR(inode->i_mode)) | |
2804 | goto redirty_out; | |
db198ae0 CY |
2805 | goto out; |
2806 | } | |
2807 | ||
0771fcc7 CY |
2808 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2809 | goto redirty_out; | |
2810 | ||
4c8ff709 CY |
2811 | if (page->index < end_index || |
2812 | f2fs_verity_in_progress(inode) || | |
2813 | compr_blocks) | |
39936837 | 2814 | goto write; |
eb47b800 JK |
2815 | |
2816 | /* | |
2817 | * If the offset is out-of-range of file size, | |
2818 | * this page does not have to be written to disk. | |
2819 | */ | |
09cbfeaf | 2820 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2821 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2822 | goto out; |
eb47b800 | 2823 | |
09cbfeaf | 2824 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2825 | write: |
1e84371f JK |
2826 | if (f2fs_is_drop_cache(inode)) |
2827 | goto out; | |
eb47b800 | 2828 | |
435cbab9 JK |
2829 | /* Dentry/quota blocks are controlled by checkpoint */ |
2830 | if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) { | |
79963d96 CY |
2831 | /* |
2832 | * We need to wait for node_write to avoid block allocation during | |
2833 | * checkpoint. This can only happen to quota writes which can cause | |
2834 | * the below discard race condition. | |
2835 | */ | |
2836 | if (IS_NOQUOTA(inode)) | |
e4544b63 | 2837 | f2fs_down_read(&sbi->node_write); |
79963d96 | 2838 | |
cc15620b | 2839 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2840 | err = f2fs_do_write_data_page(&fio); |
79963d96 CY |
2841 | |
2842 | if (IS_NOQUOTA(inode)) | |
e4544b63 | 2843 | f2fs_up_read(&sbi->node_write); |
79963d96 | 2844 | |
8618b881 JK |
2845 | goto done; |
2846 | } | |
9ffe0fb5 | 2847 | |
8618b881 | 2848 | if (!wbc->for_reclaim) |
39936837 | 2849 | need_balance_fs = true; |
7f3037a5 | 2850 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2851 | goto redirty_out; |
ef095d19 JK |
2852 | else |
2853 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2854 | |
b3d208f9 | 2855 | err = -EAGAIN; |
dd7b2333 | 2856 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2857 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2858 | if (!err) |
2859 | goto out; | |
2860 | } | |
279d6df2 | 2861 | |
cc15620b | 2862 | if (err == -EAGAIN) { |
4d57b86d | 2863 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2864 | if (err == -EAGAIN) { |
2865 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2866 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2867 | } |
2868 | } | |
a0d00fad | 2869 | |
eb449797 CY |
2870 | if (err) { |
2871 | file_set_keep_isize(inode); | |
2872 | } else { | |
c10c9820 | 2873 | spin_lock(&F2FS_I(inode)->i_size_lock); |
eb449797 CY |
2874 | if (F2FS_I(inode)->last_disk_size < psize) |
2875 | F2FS_I(inode)->last_disk_size = psize; | |
c10c9820 | 2876 | spin_unlock(&F2FS_I(inode)->i_size_lock); |
eb449797 | 2877 | } |
279d6df2 | 2878 | |
8618b881 JK |
2879 | done: |
2880 | if (err && err != -ENOENT) | |
2881 | goto redirty_out; | |
eb47b800 | 2882 | |
39936837 | 2883 | out: |
a7ffdbe2 | 2884 | inode_dec_dirty_pages(inode); |
2baf0781 | 2885 | if (err) { |
2bca1e23 | 2886 | ClearPageUptodate(page); |
b763f3be | 2887 | clear_page_private_gcing(page); |
2baf0781 | 2888 | } |
0c3a5797 CY |
2889 | |
2890 | if (wbc->for_reclaim) { | |
bab475c5 | 2891 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2892 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2893 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2894 | submitted = NULL; |
0c3a5797 | 2895 | } |
eb47b800 | 2896 | unlock_page(page); |
186857c5 | 2897 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
d80afefb | 2898 | !F2FS_I(inode)->wb_task && allow_balance) |
a7881893 | 2899 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2900 | |
d68f735b | 2901 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2902 | f2fs_submit_merged_write(sbi, DATA); |
0b20fcec | 2903 | f2fs_submit_merged_ipu_write(sbi, bio, NULL); |
d68f735b JK |
2904 | submitted = NULL; |
2905 | } | |
2906 | ||
2907 | if (submitted) | |
4c8ff709 | 2908 | *submitted = fio.submitted ? 1 : 0; |
0c3a5797 | 2909 | |
eb47b800 JK |
2910 | return 0; |
2911 | ||
eb47b800 | 2912 | redirty_out: |
76f60268 | 2913 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2914 | /* |
2915 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2916 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2917 | * file_write_and_wait_range() will see EIO error, which is critical | |
2918 | * to return value of fsync() followed by atomic_write failure to user. | |
2919 | */ | |
2920 | if (!err || wbc->for_reclaim) | |
0002b61b | 2921 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2922 | unlock_page(page); |
2923 | return err; | |
fa9150a8 NJ |
2924 | } |
2925 | ||
f566bae8 JK |
2926 | static int f2fs_write_data_page(struct page *page, |
2927 | struct writeback_control *wbc) | |
2928 | { | |
4c8ff709 CY |
2929 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2930 | struct inode *inode = page->mapping->host; | |
2931 | ||
2932 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) | |
2933 | goto out; | |
2934 | ||
2935 | if (f2fs_compressed_file(inode)) { | |
2936 | if (f2fs_is_compressed_cluster(inode, page->index)) { | |
2937 | redirty_page_for_writepage(wbc, page); | |
2938 | return AOP_WRITEPAGE_ACTIVATE; | |
2939 | } | |
2940 | } | |
2941 | out: | |
2942 | #endif | |
2943 | ||
2944 | return f2fs_write_single_data_page(page, NULL, NULL, NULL, | |
3afae09f | 2945 | wbc, FS_DATA_IO, 0, true); |
f566bae8 JK |
2946 | } |
2947 | ||
8f46dcae CY |
2948 | /* |
2949 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2950 | * The major change is making write step of cold data page separately from | |
2951 | * warm/hot data page. | |
2952 | */ | |
2953 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2954 | struct writeback_control *wbc, |
2955 | enum iostat_type io_type) | |
8f46dcae CY |
2956 | { |
2957 | int ret = 0; | |
4c8ff709 | 2958 | int done = 0, retry = 0; |
01fc4b9a | 2959 | struct page *pages[F2FS_ONSTACK_PAGES]; |
c29fd0c0 | 2960 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2961 | struct bio *bio = NULL; |
2962 | sector_t last_block; | |
4c8ff709 CY |
2963 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2964 | struct inode *inode = mapping->host; | |
2965 | struct compress_ctx cc = { | |
2966 | .inode = inode, | |
2967 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2968 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2969 | .cluster_idx = NULL_CLUSTER, | |
2970 | .rpages = NULL, | |
2971 | .nr_rpages = 0, | |
2972 | .cpages = NULL, | |
3271d7eb | 2973 | .valid_nr_cpages = 0, |
4c8ff709 CY |
2974 | .rbuf = NULL, |
2975 | .cbuf = NULL, | |
2976 | .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, | |
2977 | .private = NULL, | |
2978 | }; | |
2979 | #endif | |
8f46dcae | 2980 | int nr_pages; |
8f46dcae CY |
2981 | pgoff_t index; |
2982 | pgoff_t end; /* Inclusive */ | |
2983 | pgoff_t done_index; | |
8f46dcae | 2984 | int range_whole = 0; |
10bbd235 | 2985 | xa_mark_t tag; |
bab475c5 | 2986 | int nwritten = 0; |
4c8ff709 CY |
2987 | int submitted = 0; |
2988 | int i; | |
8f46dcae | 2989 | |
ef095d19 JK |
2990 | if (get_dirty_pages(mapping->host) <= |
2991 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2992 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2993 | else | |
2994 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2995 | ||
8f46dcae | 2996 | if (wbc->range_cyclic) { |
4df7a75f | 2997 | index = mapping->writeback_index; /* prev offset */ |
8f46dcae CY |
2998 | end = -1; |
2999 | } else { | |
09cbfeaf KS |
3000 | index = wbc->range_start >> PAGE_SHIFT; |
3001 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
3002 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
3003 | range_whole = 1; | |
8f46dcae CY |
3004 | } |
3005 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
3006 | tag = PAGECACHE_TAG_TOWRITE; | |
3007 | else | |
3008 | tag = PAGECACHE_TAG_DIRTY; | |
3009 | retry: | |
4c8ff709 | 3010 | retry = 0; |
8f46dcae CY |
3011 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) |
3012 | tag_pages_for_writeback(mapping, index, end); | |
3013 | done_index = index; | |
4c8ff709 | 3014 | while (!done && !retry && (index <= end)) { |
01fc4b9a FC |
3015 | nr_pages = find_get_pages_range_tag(mapping, &index, end, |
3016 | tag, F2FS_ONSTACK_PAGES, pages); | |
8f46dcae CY |
3017 | if (nr_pages == 0) |
3018 | break; | |
3019 | ||
3020 | for (i = 0; i < nr_pages; i++) { | |
01fc4b9a | 3021 | struct page *page = pages[i]; |
4c8ff709 CY |
3022 | bool need_readd; |
3023 | readd: | |
3024 | need_readd = false; | |
3025 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3026 | if (f2fs_compressed_file(inode)) { | |
b368cc5e FC |
3027 | void *fsdata = NULL; |
3028 | struct page *pagep; | |
3029 | int ret2; | |
3030 | ||
4c8ff709 CY |
3031 | ret = f2fs_init_compress_ctx(&cc); |
3032 | if (ret) { | |
3033 | done = 1; | |
3034 | break; | |
3035 | } | |
3036 | ||
3037 | if (!f2fs_cluster_can_merge_page(&cc, | |
3038 | page->index)) { | |
3039 | ret = f2fs_write_multi_pages(&cc, | |
3040 | &submitted, wbc, io_type); | |
3041 | if (!ret) | |
3042 | need_readd = true; | |
3043 | goto result; | |
3044 | } | |
8f46dcae | 3045 | |
4c8ff709 CY |
3046 | if (unlikely(f2fs_cp_error(sbi))) |
3047 | goto lock_page; | |
3048 | ||
b368cc5e FC |
3049 | if (!f2fs_cluster_is_empty(&cc)) |
3050 | goto lock_page; | |
4c8ff709 | 3051 | |
4f8219f8 | 3052 | if (f2fs_all_cluster_page_ready(&cc, |
01fc4b9a | 3053 | pages, i, nr_pages, true)) |
4f8219f8 FC |
3054 | goto lock_page; |
3055 | ||
b368cc5e | 3056 | ret2 = f2fs_prepare_compress_overwrite( |
4c8ff709 CY |
3057 | inode, &pagep, |
3058 | page->index, &fsdata); | |
b368cc5e FC |
3059 | if (ret2 < 0) { |
3060 | ret = ret2; | |
3061 | done = 1; | |
3062 | break; | |
3063 | } else if (ret2 && | |
3064 | (!f2fs_compress_write_end(inode, | |
3065 | fsdata, page->index, 1) || | |
4f8219f8 | 3066 | !f2fs_all_cluster_page_ready(&cc, |
01fc4b9a | 3067 | pages, i, nr_pages, false))) { |
b368cc5e FC |
3068 | retry = 1; |
3069 | break; | |
4c8ff709 CY |
3070 | } |
3071 | } | |
3072 | #endif | |
f8de4331 | 3073 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 3074 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
3075 | wbc->sync_mode == WB_SYNC_NONE) { |
3076 | done = 1; | |
3077 | break; | |
3078 | } | |
4c8ff709 CY |
3079 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3080 | lock_page: | |
3081 | #endif | |
8f46dcae | 3082 | done_index = page->index; |
d29460e5 | 3083 | retry_write: |
8f46dcae CY |
3084 | lock_page(page); |
3085 | ||
3086 | if (unlikely(page->mapping != mapping)) { | |
3087 | continue_unlock: | |
3088 | unlock_page(page); | |
3089 | continue; | |
3090 | } | |
3091 | ||
3092 | if (!PageDirty(page)) { | |
3093 | /* someone wrote it for us */ | |
3094 | goto continue_unlock; | |
3095 | } | |
3096 | ||
8f46dcae | 3097 | if (PageWriteback(page)) { |
0b20fcec | 3098 | if (wbc->sync_mode != WB_SYNC_NONE) |
fec1d657 | 3099 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 3100 | DATA, true, true); |
0b20fcec | 3101 | else |
8f46dcae CY |
3102 | goto continue_unlock; |
3103 | } | |
3104 | ||
8f46dcae CY |
3105 | if (!clear_page_dirty_for_io(page)) |
3106 | goto continue_unlock; | |
3107 | ||
4c8ff709 CY |
3108 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3109 | if (f2fs_compressed_file(inode)) { | |
3110 | get_page(page); | |
3111 | f2fs_compress_ctx_add_page(&cc, page); | |
3112 | continue; | |
3113 | } | |
3114 | #endif | |
3115 | ret = f2fs_write_single_data_page(page, &submitted, | |
3afae09f CY |
3116 | &bio, &last_block, wbc, io_type, |
3117 | 0, true); | |
4c8ff709 CY |
3118 | if (ret == AOP_WRITEPAGE_ACTIVATE) |
3119 | unlock_page(page); | |
3120 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3121 | result: | |
3122 | #endif | |
3123 | nwritten += submitted; | |
3124 | wbc->nr_to_write -= submitted; | |
3125 | ||
8f46dcae | 3126 | if (unlikely(ret)) { |
0002b61b CY |
3127 | /* |
3128 | * keep nr_to_write, since vfs uses this to | |
3129 | * get # of written pages. | |
3130 | */ | |
3131 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
0002b61b | 3132 | ret = 0; |
4c8ff709 | 3133 | goto next; |
d29460e5 JK |
3134 | } else if (ret == -EAGAIN) { |
3135 | ret = 0; | |
3136 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
a64239d0 | 3137 | f2fs_io_schedule_timeout( |
5df7731f | 3138 | DEFAULT_IO_TIMEOUT); |
d29460e5 JK |
3139 | goto retry_write; |
3140 | } | |
4c8ff709 | 3141 | goto next; |
0002b61b | 3142 | } |
b230e6ca JK |
3143 | done_index = page->index + 1; |
3144 | done = 1; | |
3145 | break; | |
8f46dcae CY |
3146 | } |
3147 | ||
4c8ff709 | 3148 | if (wbc->nr_to_write <= 0 && |
687de7f1 | 3149 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
3150 | done = 1; |
3151 | break; | |
3152 | } | |
4c8ff709 CY |
3153 | next: |
3154 | if (need_readd) | |
3155 | goto readd; | |
8f46dcae | 3156 | } |
01fc4b9a | 3157 | release_pages(pages, nr_pages); |
8f46dcae CY |
3158 | cond_resched(); |
3159 | } | |
4c8ff709 CY |
3160 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3161 | /* flush remained pages in compress cluster */ | |
3162 | if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) { | |
3163 | ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); | |
3164 | nwritten += submitted; | |
3165 | wbc->nr_to_write -= submitted; | |
3166 | if (ret) { | |
3167 | done = 1; | |
3168 | retry = 0; | |
3169 | } | |
3170 | } | |
adfc6943 | 3171 | if (f2fs_compressed_file(inode)) |
8bfbfb0d | 3172 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 | 3173 | #endif |
e78790f8 | 3174 | if (retry) { |
8f46dcae | 3175 | index = 0; |
e78790f8 | 3176 | end = -1; |
8f46dcae CY |
3177 | goto retry; |
3178 | } | |
e78790f8 ST |
3179 | if (wbc->range_cyclic && !done) |
3180 | done_index = 0; | |
8f46dcae CY |
3181 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) |
3182 | mapping->writeback_index = done_index; | |
3183 | ||
bab475c5 | 3184 | if (nwritten) |
b9109b0e | 3185 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 3186 | NULL, 0, DATA); |
8648de2c CY |
3187 | /* submit cached bio of IPU write */ |
3188 | if (bio) | |
0b20fcec | 3189 | f2fs_submit_merged_ipu_write(sbi, &bio, NULL); |
6ca56ca4 | 3190 | |
8f46dcae CY |
3191 | return ret; |
3192 | } | |
3193 | ||
853137ce JK |
3194 | static inline bool __should_serialize_io(struct inode *inode, |
3195 | struct writeback_control *wbc) | |
3196 | { | |
b13f67ff | 3197 | /* to avoid deadlock in path of data flush */ |
d80afefb | 3198 | if (F2FS_I(inode)->wb_task) |
b13f67ff CY |
3199 | return false; |
3200 | ||
853137ce JK |
3201 | if (!S_ISREG(inode->i_mode)) |
3202 | return false; | |
af033b2a CY |
3203 | if (IS_NOQUOTA(inode)) |
3204 | return false; | |
b13f67ff | 3205 | |
602a16d5 | 3206 | if (f2fs_need_compress_data(inode)) |
b13f67ff | 3207 | return true; |
853137ce JK |
3208 | if (wbc->sync_mode != WB_SYNC_ALL) |
3209 | return true; | |
3210 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
3211 | return true; | |
3212 | return false; | |
3213 | } | |
3214 | ||
fc99fe27 | 3215 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
3216 | struct writeback_control *wbc, |
3217 | enum iostat_type io_type) | |
eb47b800 JK |
3218 | { |
3219 | struct inode *inode = mapping->host; | |
4081363f | 3220 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 3221 | struct blk_plug plug; |
eb47b800 | 3222 | int ret; |
853137ce | 3223 | bool locked = false; |
eb47b800 | 3224 | |
cfb185a1 | 3225 | /* deal with chardevs and other special file */ |
3226 | if (!mapping->a_ops->writepage) | |
3227 | return 0; | |
3228 | ||
6a290544 CY |
3229 | /* skip writing if there is no dirty page in this inode */ |
3230 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
3231 | return 0; | |
3232 | ||
0771fcc7 CY |
3233 | /* during POR, we don't need to trigger writepage at all. */ |
3234 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
3235 | goto skip_write; | |
3236 | ||
af033b2a CY |
3237 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
3238 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 3239 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 3240 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
3241 | goto skip_write; |
3242 | ||
1018a546 CY |
3243 | /* skip writing in file defragment preparing stage */ |
3244 | if (is_inode_flag_set(inode, FI_SKIP_WRITES)) | |
d323d005 CY |
3245 | goto skip_write; |
3246 | ||
d31c7c3f YH |
3247 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
3248 | ||
687de7f1 JK |
3249 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
3250 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 | 3251 | atomic_inc(&sbi->wb_sync_req[DATA]); |
34415099 CY |
3252 | else if (atomic_read(&sbi->wb_sync_req[DATA])) { |
3253 | /* to avoid potential deadlock */ | |
3254 | if (current->plug) | |
3255 | blk_finish_plug(current->plug); | |
687de7f1 | 3256 | goto skip_write; |
34415099 | 3257 | } |
687de7f1 | 3258 | |
853137ce JK |
3259 | if (__should_serialize_io(inode, wbc)) { |
3260 | mutex_lock(&sbi->writepages); | |
3261 | locked = true; | |
3262 | } | |
3263 | ||
9dfa1baf | 3264 | blk_start_plug(&plug); |
b0af6d49 | 3265 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 3266 | blk_finish_plug(&plug); |
687de7f1 | 3267 | |
853137ce JK |
3268 | if (locked) |
3269 | mutex_unlock(&sbi->writepages); | |
3270 | ||
687de7f1 | 3271 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 3272 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
3273 | /* |
3274 | * if some pages were truncated, we cannot guarantee its mapping->host | |
3275 | * to detect pending bios. | |
3276 | */ | |
458e6197 | 3277 | |
4d57b86d | 3278 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 3279 | return ret; |
d3baf95d JK |
3280 | |
3281 | skip_write: | |
a7ffdbe2 | 3282 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 3283 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 3284 | return 0; |
eb47b800 JK |
3285 | } |
3286 | ||
b0af6d49 CY |
3287 | static int f2fs_write_data_pages(struct address_space *mapping, |
3288 | struct writeback_control *wbc) | |
3289 | { | |
3290 | struct inode *inode = mapping->host; | |
3291 | ||
3292 | return __f2fs_write_data_pages(mapping, wbc, | |
3293 | F2FS_I(inode)->cp_task == current ? | |
3294 | FS_CP_DATA_IO : FS_DATA_IO); | |
3295 | } | |
3296 | ||
a1e09b03 | 3297 | void f2fs_write_failed(struct inode *inode, loff_t to) |
3aab8f82 | 3298 | { |
819d9153 | 3299 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 3300 | |
3f188c23 JK |
3301 | if (IS_NOQUOTA(inode)) |
3302 | return; | |
3303 | ||
95ae251f EB |
3304 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
3305 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
e4544b63 | 3306 | f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6abaa83c | 3307 | filemap_invalidate_lock(inode->i_mapping); |
a33c1502 | 3308 | |
819d9153 | 3309 | truncate_pagecache(inode, i_size); |
3f188c23 | 3310 | f2fs_truncate_blocks(inode, i_size, true); |
a33c1502 | 3311 | |
6abaa83c | 3312 | filemap_invalidate_unlock(inode->i_mapping); |
e4544b63 | 3313 | f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
3314 | } |
3315 | } | |
3316 | ||
2aadac08 JK |
3317 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
3318 | struct page *page, loff_t pos, unsigned len, | |
3319 | block_t *blk_addr, bool *node_changed) | |
3320 | { | |
3321 | struct inode *inode = page->mapping->host; | |
3322 | pgoff_t index = page->index; | |
3323 | struct dnode_of_data dn; | |
3324 | struct page *ipage; | |
b4d07a3e | 3325 | bool locked = false; |
94afd6d6 | 3326 | struct extent_info ei = {0, }; |
2aadac08 | 3327 | int err = 0; |
2866fb16 | 3328 | int flag; |
2aadac08 | 3329 | |
24b84912 | 3330 | /* |
3d697a4a EB |
3331 | * If a whole page is being written and we already preallocated all the |
3332 | * blocks, then there is no need to get a block address now. | |
24b84912 | 3333 | */ |
3d697a4a | 3334 | if (len == PAGE_SIZE && is_inode_flag_set(inode, FI_PREALLOCATED_ALL)) |
24b84912 JK |
3335 | return 0; |
3336 | ||
2866fb16 SY |
3337 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
3338 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
3339 | flag = F2FS_GET_BLOCK_DEFAULT; | |
3340 | else | |
3341 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
3342 | ||
b4d07a3e | 3343 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 3344 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
0ef81833 | 3345 | f2fs_do_map_lock(sbi, flag, true); |
b4d07a3e JK |
3346 | locked = true; |
3347 | } | |
4c8ff709 | 3348 | |
b4d07a3e | 3349 | restart: |
2aadac08 | 3350 | /* check inline_data */ |
4d57b86d | 3351 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
3352 | if (IS_ERR(ipage)) { |
3353 | err = PTR_ERR(ipage); | |
3354 | goto unlock_out; | |
3355 | } | |
3356 | ||
3357 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3358 | ||
3359 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 3360 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 3361 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 3362 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d | 3363 | if (inode->i_nlink) |
b763f3be | 3364 | set_page_private_inline(ipage); |
2aadac08 JK |
3365 | } else { |
3366 | err = f2fs_convert_inline_page(&dn, page); | |
3367 | if (err) | |
b4d07a3e JK |
3368 | goto out; |
3369 | if (dn.data_blkaddr == NULL_ADDR) | |
3370 | err = f2fs_get_block(&dn, index); | |
3371 | } | |
3372 | } else if (locked) { | |
3373 | err = f2fs_get_block(&dn, index); | |
3374 | } else { | |
e7547dac | 3375 | if (f2fs_lookup_read_extent_cache(inode, index, &ei)) { |
b4d07a3e JK |
3376 | dn.data_blkaddr = ei.blk + index - ei.fofs; |
3377 | } else { | |
b4d07a3e | 3378 | /* hole case */ |
4d57b86d | 3379 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 3380 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 3381 | f2fs_put_dnode(&dn); |
0ef81833 | 3382 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
59c9081b | 3383 | true); |
2866fb16 | 3384 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
3385 | locked = true; |
3386 | goto restart; | |
3387 | } | |
2aadac08 JK |
3388 | } |
3389 | } | |
b4d07a3e | 3390 | |
2aadac08 JK |
3391 | /* convert_inline_page can make node_changed */ |
3392 | *blk_addr = dn.data_blkaddr; | |
3393 | *node_changed = dn.node_changed; | |
b4d07a3e | 3394 | out: |
2aadac08 JK |
3395 | f2fs_put_dnode(&dn); |
3396 | unlock_out: | |
b4d07a3e | 3397 | if (locked) |
0ef81833 | 3398 | f2fs_do_map_lock(sbi, flag, false); |
2aadac08 JK |
3399 | return err; |
3400 | } | |
3401 | ||
3db1de0e DJ |
3402 | static int __find_data_block(struct inode *inode, pgoff_t index, |
3403 | block_t *blk_addr) | |
3404 | { | |
3405 | struct dnode_of_data dn; | |
3406 | struct page *ipage; | |
3407 | struct extent_info ei = {0, }; | |
3408 | int err = 0; | |
3409 | ||
3410 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); | |
3411 | if (IS_ERR(ipage)) | |
3412 | return PTR_ERR(ipage); | |
3413 | ||
3414 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3415 | ||
e7547dac | 3416 | if (f2fs_lookup_read_extent_cache(inode, index, &ei)) { |
3db1de0e DJ |
3417 | dn.data_blkaddr = ei.blk + index - ei.fofs; |
3418 | } else { | |
3419 | /* hole case */ | |
3420 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); | |
3421 | if (err) { | |
3422 | dn.data_blkaddr = NULL_ADDR; | |
3423 | err = 0; | |
3424 | } | |
3425 | } | |
3426 | *blk_addr = dn.data_blkaddr; | |
3427 | f2fs_put_dnode(&dn); | |
3428 | return err; | |
3429 | } | |
3430 | ||
3431 | static int __reserve_data_block(struct inode *inode, pgoff_t index, | |
3432 | block_t *blk_addr, bool *node_changed) | |
3433 | { | |
3434 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
3435 | struct dnode_of_data dn; | |
3436 | struct page *ipage; | |
3437 | int err = 0; | |
3438 | ||
3439 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); | |
3440 | ||
3441 | ipage = f2fs_get_node_page(sbi, inode->i_ino); | |
3442 | if (IS_ERR(ipage)) { | |
3443 | err = PTR_ERR(ipage); | |
3444 | goto unlock_out; | |
3445 | } | |
3446 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3447 | ||
3448 | err = f2fs_get_block(&dn, index); | |
3449 | ||
3450 | *blk_addr = dn.data_blkaddr; | |
3451 | *node_changed = dn.node_changed; | |
3452 | f2fs_put_dnode(&dn); | |
3453 | ||
3454 | unlock_out: | |
3455 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); | |
3456 | return err; | |
3457 | } | |
3458 | ||
3459 | static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi, | |
3460 | struct page *page, loff_t pos, unsigned int len, | |
3461 | block_t *blk_addr, bool *node_changed) | |
3462 | { | |
3463 | struct inode *inode = page->mapping->host; | |
3464 | struct inode *cow_inode = F2FS_I(inode)->cow_inode; | |
3465 | pgoff_t index = page->index; | |
3466 | int err = 0; | |
f8e2f32b | 3467 | block_t ori_blk_addr = NULL_ADDR; |
3db1de0e DJ |
3468 | |
3469 | /* If pos is beyond the end of file, reserve a new block in COW inode */ | |
3470 | if ((pos & PAGE_MASK) >= i_size_read(inode)) | |
f8e2f32b | 3471 | goto reserve_block; |
3db1de0e DJ |
3472 | |
3473 | /* Look for the block in COW inode first */ | |
3474 | err = __find_data_block(cow_inode, index, blk_addr); | |
3475 | if (err) | |
3476 | return err; | |
3477 | else if (*blk_addr != NULL_ADDR) | |
3478 | return 0; | |
3479 | ||
41e8f85a DJ |
3480 | if (is_inode_flag_set(inode, FI_ATOMIC_REPLACE)) |
3481 | goto reserve_block; | |
3482 | ||
3db1de0e DJ |
3483 | /* Look for the block in the original inode */ |
3484 | err = __find_data_block(inode, index, &ori_blk_addr); | |
3485 | if (err) | |
3486 | return err; | |
3487 | ||
f8e2f32b | 3488 | reserve_block: |
3db1de0e DJ |
3489 | /* Finally, we should reserve a new block in COW inode for the update */ |
3490 | err = __reserve_data_block(cow_inode, index, blk_addr, node_changed); | |
3491 | if (err) | |
3492 | return err; | |
f8e2f32b | 3493 | inc_atomic_write_cnt(inode); |
3db1de0e DJ |
3494 | |
3495 | if (ori_blk_addr != NULL_ADDR) | |
3496 | *blk_addr = ori_blk_addr; | |
3497 | return 0; | |
3498 | } | |
3499 | ||
eb47b800 | 3500 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
9d6b0cd7 | 3501 | loff_t pos, unsigned len, struct page **pagep, void **fsdata) |
eb47b800 JK |
3502 | { |
3503 | struct inode *inode = mapping->host; | |
4081363f | 3504 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 3505 | struct page *page = NULL; |
09cbfeaf | 3506 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
3db1de0e | 3507 | bool need_balance = false; |
2aadac08 | 3508 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
3509 | int err = 0; |
3510 | ||
9d6b0cd7 | 3511 | trace_f2fs_write_begin(inode, pos, len); |
62aed044 | 3512 | |
00e09c0b CY |
3513 | if (!f2fs_is_checkpoint_ready(sbi)) { |
3514 | err = -ENOSPC; | |
4354994f | 3515 | goto fail; |
00e09c0b | 3516 | } |
4354994f | 3517 | |
5f727395 JK |
3518 | /* |
3519 | * We should check this at this moment to avoid deadlock on inode page | |
3520 | * and #0 page. The locking rule for inline_data conversion should be: | |
3521 | * lock_page(page #0) -> lock_page(inode_page) | |
3522 | */ | |
3523 | if (index != 0) { | |
3524 | err = f2fs_convert_inline_inode(inode); | |
3525 | if (err) | |
3526 | goto fail; | |
3527 | } | |
4c8ff709 CY |
3528 | |
3529 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3530 | if (f2fs_compressed_file(inode)) { | |
3531 | int ret; | |
3532 | ||
3533 | *fsdata = NULL; | |
3534 | ||
9b56adcf | 3535 | if (len == PAGE_SIZE && !(f2fs_is_atomic_file(inode))) |
7eab7a69 FC |
3536 | goto repeat; |
3537 | ||
4c8ff709 CY |
3538 | ret = f2fs_prepare_compress_overwrite(inode, pagep, |
3539 | index, fsdata); | |
3540 | if (ret < 0) { | |
3541 | err = ret; | |
3542 | goto fail; | |
3543 | } else if (ret) { | |
3544 | return 0; | |
3545 | } | |
3546 | } | |
3547 | #endif | |
3548 | ||
afcb7ca0 | 3549 | repeat: |
86d54795 JK |
3550 | /* |
3551 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
3552 | * wait_for_stable_page. Will wait that below with our IO control. | |
3553 | */ | |
01eccef7 | 3554 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 3555 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
3556 | if (!page) { |
3557 | err = -ENOMEM; | |
3558 | goto fail; | |
3559 | } | |
d5f66990 | 3560 | |
4c8ff709 CY |
3561 | /* TODO: cluster can be compressed due to race with .writepage */ |
3562 | ||
eb47b800 JK |
3563 | *pagep = page; |
3564 | ||
3db1de0e DJ |
3565 | if (f2fs_is_atomic_file(inode)) |
3566 | err = prepare_atomic_write_begin(sbi, page, pos, len, | |
3567 | &blkaddr, &need_balance); | |
3568 | else | |
3569 | err = prepare_write_begin(sbi, page, pos, len, | |
2aadac08 | 3570 | &blkaddr, &need_balance); |
9ba69cf9 | 3571 | if (err) |
2aadac08 | 3572 | goto fail; |
9ba69cf9 | 3573 | |
af033b2a CY |
3574 | if (need_balance && !IS_NOQUOTA(inode) && |
3575 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 3576 | unlock_page(page); |
2c4db1a6 | 3577 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
3578 | lock_page(page); |
3579 | if (page->mapping != mapping) { | |
3580 | /* The page got truncated from under us */ | |
3581 | f2fs_put_page(page, 1); | |
3582 | goto repeat; | |
3583 | } | |
3584 | } | |
3585 | ||
bae0ee7a | 3586 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 3587 | |
649d7df2 JK |
3588 | if (len == PAGE_SIZE || PageUptodate(page)) |
3589 | return 0; | |
eb47b800 | 3590 | |
95ae251f EB |
3591 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
3592 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
3593 | zero_user_segment(page, len, PAGE_SIZE); |
3594 | return 0; | |
3595 | } | |
3596 | ||
2aadac08 | 3597 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 3598 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 3599 | SetPageUptodate(page); |
eb47b800 | 3600 | } else { |
93770ab7 CY |
3601 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
3602 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 3603 | err = -EFSCORRUPTED; |
95fa90c9 | 3604 | f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR); |
93770ab7 CY |
3605 | goto fail; |
3606 | } | |
b7973091 | 3607 | err = f2fs_submit_page_read(inode, page, blkaddr, 0, true); |
13ba41e3 | 3608 | if (err) |
78682f79 | 3609 | goto fail; |
d54c795b | 3610 | |
393ff91f | 3611 | lock_page(page); |
6bacf52f | 3612 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
3613 | f2fs_put_page(page, 1); |
3614 | goto repeat; | |
eb47b800 | 3615 | } |
1563ac75 CY |
3616 | if (unlikely(!PageUptodate(page))) { |
3617 | err = -EIO; | |
3618 | goto fail; | |
4375a336 | 3619 | } |
eb47b800 | 3620 | } |
eb47b800 | 3621 | return 0; |
9ba69cf9 | 3622 | |
3aab8f82 | 3623 | fail: |
86531d6b | 3624 | f2fs_put_page(page, 1); |
3e679dc7 | 3625 | f2fs_write_failed(inode, pos + len); |
3aab8f82 | 3626 | return err; |
eb47b800 JK |
3627 | } |
3628 | ||
a1dd3c13 JK |
3629 | static int f2fs_write_end(struct file *file, |
3630 | struct address_space *mapping, | |
3631 | loff_t pos, unsigned len, unsigned copied, | |
3632 | struct page *page, void *fsdata) | |
3633 | { | |
3634 | struct inode *inode = page->mapping->host; | |
3635 | ||
dfb2bf38 CY |
3636 | trace_f2fs_write_end(inode, pos, len, copied); |
3637 | ||
649d7df2 JK |
3638 | /* |
3639 | * This should be come from len == PAGE_SIZE, and we expect copied | |
3640 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
3641 | * let generic_perform_write() try to copy data again through copied=0. | |
3642 | */ | |
3643 | if (!PageUptodate(page)) { | |
746e2403 | 3644 | if (unlikely(copied != len)) |
649d7df2 JK |
3645 | copied = 0; |
3646 | else | |
3647 | SetPageUptodate(page); | |
3648 | } | |
4c8ff709 CY |
3649 | |
3650 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3651 | /* overwrite compressed file */ | |
3652 | if (f2fs_compressed_file(inode) && fsdata) { | |
3653 | f2fs_compress_write_end(inode, fsdata, page->index, copied); | |
3654 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
944dd22e CY |
3655 | |
3656 | if (pos + copied > i_size_read(inode) && | |
3657 | !f2fs_verity_in_progress(inode)) | |
3658 | f2fs_i_size_write(inode, pos + copied); | |
4c8ff709 CY |
3659 | return copied; |
3660 | } | |
3661 | #endif | |
3662 | ||
649d7df2 JK |
3663 | if (!copied) |
3664 | goto unlock_out; | |
3665 | ||
34ba94ba | 3666 | set_page_dirty(page); |
a1dd3c13 | 3667 | |
95ae251f | 3668 | if (pos + copied > i_size_read(inode) && |
3db1de0e | 3669 | !f2fs_verity_in_progress(inode)) { |
fc9581c8 | 3670 | f2fs_i_size_write(inode, pos + copied); |
3db1de0e DJ |
3671 | if (f2fs_is_atomic_file(inode)) |
3672 | f2fs_i_size_write(F2FS_I(inode)->cow_inode, | |
3673 | pos + copied); | |
3674 | } | |
649d7df2 | 3675 | unlock_out: |
3024c9a1 | 3676 | f2fs_put_page(page, 1); |
d0239e1b | 3677 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
3678 | return copied; |
3679 | } | |
3680 | ||
91503996 | 3681 | void f2fs_invalidate_folio(struct folio *folio, size_t offset, size_t length) |
eb47b800 | 3682 | { |
91503996 | 3683 | struct inode *inode = folio->mapping->host; |
487261f3 | 3684 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 3685 | |
487261f3 | 3686 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
91503996 | 3687 | (offset || length != folio_size(folio))) |
a7ffdbe2 JK |
3688 | return; |
3689 | ||
91503996 | 3690 | if (folio_test_dirty(folio)) { |
933439c8 | 3691 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 3692 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 3693 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 3694 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 3695 | } else { |
487261f3 | 3696 | inode_dec_dirty_pages(inode); |
4d57b86d | 3697 | f2fs_remove_dirty_inode(inode); |
933439c8 | 3698 | } |
487261f3 | 3699 | } |
decd36b6 | 3700 | |
91503996 | 3701 | clear_page_private_gcing(&folio->page); |
2baf0781 | 3702 | |
2a64e303 CY |
3703 | if (test_opt(sbi, COMPRESS_CACHE) && |
3704 | inode->i_ino == F2FS_COMPRESS_INO(sbi)) | |
91503996 | 3705 | clear_page_private_data(&folio->page); |
6ce19aff | 3706 | |
91503996 | 3707 | folio_detach_private(folio); |
eb47b800 JK |
3708 | } |
3709 | ||
c26cd045 | 3710 | bool f2fs_release_folio(struct folio *folio, gfp_t wait) |
eb47b800 | 3711 | { |
c26cd045 MWO |
3712 | struct f2fs_sb_info *sbi; |
3713 | ||
3714 | /* If this is dirty folio, keep private data */ | |
3715 | if (folio_test_dirty(folio)) | |
3716 | return false; | |
f68daeeb | 3717 | |
c26cd045 MWO |
3718 | sbi = F2FS_M_SB(folio->mapping); |
3719 | if (test_opt(sbi, COMPRESS_CACHE)) { | |
3720 | struct inode *inode = folio->mapping->host; | |
6ce19aff | 3721 | |
c26cd045 MWO |
3722 | if (inode->i_ino == F2FS_COMPRESS_INO(sbi)) |
3723 | clear_page_private_data(&folio->page); | |
6ce19aff CY |
3724 | } |
3725 | ||
c26cd045 | 3726 | clear_page_private_gcing(&folio->page); |
b763f3be | 3727 | |
c26cd045 MWO |
3728 | folio_detach_private(folio); |
3729 | return true; | |
eb47b800 JK |
3730 | } |
3731 | ||
4f5e34f7 MWO |
3732 | static bool f2fs_dirty_data_folio(struct address_space *mapping, |
3733 | struct folio *folio) | |
eb47b800 | 3734 | { |
4f5e34f7 | 3735 | struct inode *inode = mapping->host; |
eb47b800 | 3736 | |
4f5e34f7 | 3737 | trace_f2fs_set_page_dirty(&folio->page, DATA); |
26c6b887 | 3738 | |
4f5e34f7 MWO |
3739 | if (!folio_test_uptodate(folio)) |
3740 | folio_mark_uptodate(folio); | |
3741 | BUG_ON(folio_test_swapcache(folio)); | |
34ba94ba | 3742 | |
9b7eadd9 | 3743 | if (filemap_dirty_folio(mapping, folio)) { |
4f5e34f7 MWO |
3744 | f2fs_update_dirty_folio(inode, folio); |
3745 | return true; | |
eb47b800 | 3746 | } |
0fb5b2eb | 3747 | return false; |
eb47b800 JK |
3748 | } |
3749 | ||
c1c63387 CY |
3750 | |
3751 | static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) | |
3752 | { | |
3753 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3754 | struct dnode_of_data dn; | |
3755 | sector_t start_idx, blknr = 0; | |
3756 | int ret; | |
3757 | ||
3758 | start_idx = round_down(block, F2FS_I(inode)->i_cluster_size); | |
3759 | ||
3760 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
3761 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
3762 | if (ret) | |
3763 | return 0; | |
3764 | ||
3765 | if (dn.data_blkaddr != COMPRESS_ADDR) { | |
3766 | dn.ofs_in_node += block - start_idx; | |
3767 | blknr = f2fs_data_blkaddr(&dn); | |
3768 | if (!__is_valid_data_blkaddr(blknr)) | |
3769 | blknr = 0; | |
3770 | } | |
3771 | ||
3772 | f2fs_put_dnode(&dn); | |
c1c63387 CY |
3773 | return blknr; |
3774 | #else | |
250e84d7 | 3775 | return 0; |
c1c63387 CY |
3776 | #endif |
3777 | } | |
3778 | ||
3779 | ||
c01e54b7 JK |
3780 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
3781 | { | |
454ae7e5 | 3782 | struct inode *inode = mapping->host; |
b79b0a31 | 3783 | sector_t blknr = 0; |
454ae7e5 | 3784 | |
1d373a0e | 3785 | if (f2fs_has_inline_data(inode)) |
b79b0a31 | 3786 | goto out; |
1d373a0e JK |
3787 | |
3788 | /* make sure allocating whole blocks */ | |
3789 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
3790 | filemap_write_and_wait(mapping); | |
3791 | ||
4eda1682 | 3792 | /* Block number less than F2FS MAX BLOCKS */ |
6d1451bf | 3793 | if (unlikely(block >= max_file_blocks(inode))) |
4eda1682 | 3794 | goto out; |
c1c63387 | 3795 | |
4eda1682 DJ |
3796 | if (f2fs_compressed_file(inode)) { |
3797 | blknr = f2fs_bmap_compress(inode, block); | |
3798 | } else { | |
b876f4c9 JK |
3799 | struct f2fs_map_blocks map; |
3800 | ||
3801 | memset(&map, 0, sizeof(map)); | |
3802 | map.m_lblk = block; | |
3803 | map.m_len = 1; | |
3804 | map.m_next_pgofs = NULL; | |
3805 | map.m_seg_type = NO_CHECK_TYPE; | |
3806 | ||
3807 | if (!f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_BMAP)) | |
3808 | blknr = map.m_pblk; | |
4eda1682 | 3809 | } |
b79b0a31 CY |
3810 | out: |
3811 | trace_f2fs_bmap(inode, block, blknr); | |
3812 | return blknr; | |
429511cd CY |
3813 | } |
3814 | ||
4969c06a | 3815 | #ifdef CONFIG_SWAP |
859fca6b CY |
3816 | static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, |
3817 | unsigned int blkcnt) | |
3818 | { | |
3819 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
3820 | unsigned int blkofs; | |
3821 | unsigned int blk_per_sec = BLKS_PER_SEC(sbi); | |
3822 | unsigned int secidx = start_blk / blk_per_sec; | |
3823 | unsigned int end_sec = secidx + blkcnt / blk_per_sec; | |
3824 | int ret = 0; | |
3825 | ||
e4544b63 | 3826 | f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
edc6d01b | 3827 | filemap_invalidate_lock(inode->i_mapping); |
859fca6b CY |
3828 | |
3829 | set_inode_flag(inode, FI_ALIGNED_WRITE); | |
1018a546 | 3830 | set_inode_flag(inode, FI_OPU_WRITE); |
859fca6b CY |
3831 | |
3832 | for (; secidx < end_sec; secidx++) { | |
e4544b63 | 3833 | f2fs_down_write(&sbi->pin_sem); |
859fca6b CY |
3834 | |
3835 | f2fs_lock_op(sbi); | |
3836 | f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false); | |
3837 | f2fs_unlock_op(sbi); | |
3838 | ||
1018a546 | 3839 | set_inode_flag(inode, FI_SKIP_WRITES); |
859fca6b CY |
3840 | |
3841 | for (blkofs = 0; blkofs < blk_per_sec; blkofs++) { | |
3842 | struct page *page; | |
3843 | unsigned int blkidx = secidx * blk_per_sec + blkofs; | |
3844 | ||
3845 | page = f2fs_get_lock_data_page(inode, blkidx, true); | |
3846 | if (IS_ERR(page)) { | |
e4544b63 | 3847 | f2fs_up_write(&sbi->pin_sem); |
859fca6b CY |
3848 | ret = PTR_ERR(page); |
3849 | goto done; | |
3850 | } | |
3851 | ||
3852 | set_page_dirty(page); | |
3853 | f2fs_put_page(page, 1); | |
3854 | } | |
3855 | ||
1018a546 | 3856 | clear_inode_flag(inode, FI_SKIP_WRITES); |
859fca6b CY |
3857 | |
3858 | ret = filemap_fdatawrite(inode->i_mapping); | |
3859 | ||
e4544b63 | 3860 | f2fs_up_write(&sbi->pin_sem); |
859fca6b CY |
3861 | |
3862 | if (ret) | |
3863 | break; | |
3864 | } | |
3865 | ||
3866 | done: | |
1018a546 CY |
3867 | clear_inode_flag(inode, FI_SKIP_WRITES); |
3868 | clear_inode_flag(inode, FI_OPU_WRITE); | |
859fca6b CY |
3869 | clear_inode_flag(inode, FI_ALIGNED_WRITE); |
3870 | ||
edc6d01b | 3871 | filemap_invalidate_unlock(inode->i_mapping); |
e4544b63 | 3872 | f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
859fca6b CY |
3873 | |
3874 | return ret; | |
3875 | } | |
3876 | ||
0b8fc006 | 3877 | static int check_swap_activate(struct swap_info_struct *sis, |
af4b6b8e CY |
3878 | struct file *swap_file, sector_t *span) |
3879 | { | |
3880 | struct address_space *mapping = swap_file->f_mapping; | |
3881 | struct inode *inode = mapping->host; | |
36e4d958 | 3882 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
af4b6b8e CY |
3883 | sector_t cur_lblock; |
3884 | sector_t last_lblock; | |
3885 | sector_t pblock; | |
3886 | sector_t lowest_pblock = -1; | |
3887 | sector_t highest_pblock = 0; | |
3888 | int nr_extents = 0; | |
3889 | unsigned long nr_pblocks; | |
859fca6b CY |
3890 | unsigned int blks_per_sec = BLKS_PER_SEC(sbi); |
3891 | unsigned int sec_blks_mask = BLKS_PER_SEC(sbi) - 1; | |
ca298241 | 3892 | unsigned int not_aligned = 0; |
36e4d958 | 3893 | int ret = 0; |
af4b6b8e CY |
3894 | |
3895 | /* | |
3896 | * Map all the blocks into the extent list. This code doesn't try | |
3897 | * to be very smart. | |
3898 | */ | |
3899 | cur_lblock = 0; | |
6cbfcab5 | 3900 | last_lblock = bytes_to_blks(inode, i_size_read(inode)); |
af4b6b8e | 3901 | |
1da66103 | 3902 | while (cur_lblock < last_lblock && cur_lblock < sis->max) { |
b876f4c9 | 3903 | struct f2fs_map_blocks map; |
859fca6b | 3904 | retry: |
af4b6b8e CY |
3905 | cond_resched(); |
3906 | ||
b876f4c9 JK |
3907 | memset(&map, 0, sizeof(map)); |
3908 | map.m_lblk = cur_lblock; | |
36e4d958 | 3909 | map.m_len = last_lblock - cur_lblock; |
3910 | map.m_next_pgofs = NULL; | |
3911 | map.m_next_extent = NULL; | |
b876f4c9 | 3912 | map.m_seg_type = NO_CHECK_TYPE; |
36e4d958 | 3913 | map.m_may_create = false; |
af4b6b8e | 3914 | |
b876f4c9 | 3915 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
af4b6b8e | 3916 | if (ret) |
36e4d958 | 3917 | goto out; |
af4b6b8e CY |
3918 | |
3919 | /* hole */ | |
36e4d958 | 3920 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
833dcd35 | 3921 | f2fs_err(sbi, "Swapfile has holes"); |
f395183f | 3922 | ret = -EINVAL; |
36e4d958 | 3923 | goto out; |
3924 | } | |
af4b6b8e | 3925 | |
b876f4c9 JK |
3926 | pblock = map.m_pblk; |
3927 | nr_pblocks = map.m_len; | |
af4b6b8e | 3928 | |
859fca6b CY |
3929 | if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask || |
3930 | nr_pblocks & sec_blks_mask) { | |
ca298241 | 3931 | not_aligned++; |
36e4d958 | 3932 | |
859fca6b CY |
3933 | nr_pblocks = roundup(nr_pblocks, blks_per_sec); |
3934 | if (cur_lblock + nr_pblocks > sis->max) | |
3935 | nr_pblocks -= blks_per_sec; | |
3936 | ||
3937 | if (!nr_pblocks) { | |
3938 | /* this extent is last one */ | |
3939 | nr_pblocks = map.m_len; | |
3940 | f2fs_warn(sbi, "Swapfile: last extent is not aligned to section"); | |
3941 | goto next; | |
3942 | } | |
3943 | ||
3944 | ret = f2fs_migrate_blocks(inode, cur_lblock, | |
3945 | nr_pblocks); | |
3946 | if (ret) | |
3947 | goto out; | |
3948 | goto retry; | |
3949 | } | |
3950 | next: | |
af4b6b8e CY |
3951 | if (cur_lblock + nr_pblocks >= sis->max) |
3952 | nr_pblocks = sis->max - cur_lblock; | |
3953 | ||
3954 | if (cur_lblock) { /* exclude the header page */ | |
3955 | if (pblock < lowest_pblock) | |
3956 | lowest_pblock = pblock; | |
3957 | if (pblock + nr_pblocks - 1 > highest_pblock) | |
3958 | highest_pblock = pblock + nr_pblocks - 1; | |
3959 | } | |
3960 | ||
3961 | /* | |
3962 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3963 | */ | |
3964 | ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock); | |
3965 | if (ret < 0) | |
3966 | goto out; | |
3967 | nr_extents += ret; | |
3968 | cur_lblock += nr_pblocks; | |
3969 | } | |
3970 | ret = nr_extents; | |
3971 | *span = 1 + highest_pblock - lowest_pblock; | |
3972 | if (cur_lblock == 0) | |
3973 | cur_lblock = 1; /* force Empty message */ | |
3974 | sis->max = cur_lblock; | |
3975 | sis->pages = cur_lblock - 1; | |
3976 | sis->highest_bit = cur_lblock - 1; | |
3977 | out: | |
859fca6b CY |
3978 | if (not_aligned) |
3979 | f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(%u * N)", | |
3980 | not_aligned, blks_per_sec * F2FS_BLKSIZE); | |
af4b6b8e | 3981 | return ret; |
af4b6b8e CY |
3982 | } |
3983 | ||
4969c06a JK |
3984 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, |
3985 | sector_t *span) | |
3986 | { | |
3987 | struct inode *inode = file_inode(file); | |
3988 | int ret; | |
3989 | ||
3990 | if (!S_ISREG(inode->i_mode)) | |
3991 | return -EINVAL; | |
3992 | ||
3993 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3994 | return -EROFS; | |
3995 | ||
d927ccfc SK |
3996 | if (f2fs_lfs_mode(F2FS_I_SB(inode))) { |
3997 | f2fs_err(F2FS_I_SB(inode), | |
3998 | "Swapfile not supported in LFS mode"); | |
3999 | return -EINVAL; | |
4000 | } | |
4001 | ||
4969c06a JK |
4002 | ret = f2fs_convert_inline_inode(inode); |
4003 | if (ret) | |
4004 | return ret; | |
4005 | ||
78134d03 | 4006 | if (!f2fs_disable_compressed_file(inode)) |
4c8ff709 CY |
4007 | return -EINVAL; |
4008 | ||
0b979f1b CY |
4009 | f2fs_precache_extents(inode); |
4010 | ||
3e5e479a CY |
4011 | ret = check_swap_activate(sis, file, span); |
4012 | if (ret < 0) | |
4969c06a JK |
4013 | return ret; |
4014 | ||
8ec071c3 | 4015 | stat_inc_swapfile_inode(inode); |
4969c06a | 4016 | set_inode_flag(inode, FI_PIN_FILE); |
4969c06a | 4017 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3e5e479a | 4018 | return ret; |
4969c06a JK |
4019 | } |
4020 | ||
4021 | static void f2fs_swap_deactivate(struct file *file) | |
4022 | { | |
4023 | struct inode *inode = file_inode(file); | |
4024 | ||
8ec071c3 | 4025 | stat_dec_swapfile_inode(inode); |
4969c06a JK |
4026 | clear_inode_flag(inode, FI_PIN_FILE); |
4027 | } | |
4028 | #else | |
4029 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
4030 | sector_t *span) | |
4031 | { | |
4032 | return -EOPNOTSUPP; | |
4033 | } | |
4034 | ||
4035 | static void f2fs_swap_deactivate(struct file *file) | |
4036 | { | |
4037 | } | |
4038 | #endif | |
4039 | ||
eb47b800 | 4040 | const struct address_space_operations f2fs_dblock_aops = { |
be05584f | 4041 | .read_folio = f2fs_read_data_folio, |
23323196 | 4042 | .readahead = f2fs_readahead, |
eb47b800 JK |
4043 | .writepage = f2fs_write_data_page, |
4044 | .writepages = f2fs_write_data_pages, | |
4045 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 4046 | .write_end = f2fs_write_end, |
4f5e34f7 | 4047 | .dirty_folio = f2fs_dirty_data_folio, |
1d5b9bd6 | 4048 | .migrate_folio = filemap_migrate_folio, |
91503996 | 4049 | .invalidate_folio = f2fs_invalidate_folio, |
c26cd045 | 4050 | .release_folio = f2fs_release_folio, |
a1e09b03 | 4051 | .direct_IO = noop_direct_IO, |
c01e54b7 | 4052 | .bmap = f2fs_bmap, |
4969c06a JK |
4053 | .swap_activate = f2fs_swap_activate, |
4054 | .swap_deactivate = f2fs_swap_deactivate, | |
eb47b800 | 4055 | }; |
6dbb1796 | 4056 | |
5ec2d99d | 4057 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
4058 | { |
4059 | struct address_space *mapping = page_mapping(page); | |
4060 | unsigned long flags; | |
4061 | ||
4062 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 4063 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
4064 | PAGECACHE_TAG_DIRTY); |
4065 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
4066 | } | |
4067 | ||
6dbb1796 EB |
4068 | int __init f2fs_init_post_read_processing(void) |
4069 | { | |
95ae251f EB |
4070 | bio_post_read_ctx_cache = |
4071 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
4072 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
4073 | if (!bio_post_read_ctx_cache) |
4074 | goto fail; | |
4075 | bio_post_read_ctx_pool = | |
4076 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
4077 | bio_post_read_ctx_cache); | |
4078 | if (!bio_post_read_ctx_pool) | |
4079 | goto fail_free_cache; | |
4080 | return 0; | |
4081 | ||
4082 | fail_free_cache: | |
4083 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4084 | fail: | |
4085 | return -ENOMEM; | |
4086 | } | |
4087 | ||
0b20fcec | 4088 | void f2fs_destroy_post_read_processing(void) |
6dbb1796 EB |
4089 | { |
4090 | mempool_destroy(bio_post_read_ctx_pool); | |
4091 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4092 | } | |
0b20fcec | 4093 | |
4c8ff709 CY |
4094 | int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) |
4095 | { | |
4096 | if (!f2fs_sb_has_encrypt(sbi) && | |
4097 | !f2fs_sb_has_verity(sbi) && | |
4098 | !f2fs_sb_has_compression(sbi)) | |
4099 | return 0; | |
4100 | ||
4101 | sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", | |
4102 | WQ_UNBOUND | WQ_HIGHPRI, | |
4103 | num_online_cpus()); | |
870af777 | 4104 | return sbi->post_read_wq ? 0 : -ENOMEM; |
4c8ff709 CY |
4105 | } |
4106 | ||
4107 | void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) | |
4108 | { | |
4109 | if (sbi->post_read_wq) | |
4110 | destroy_workqueue(sbi->post_read_wq); | |
4111 | } | |
4112 | ||
0b20fcec CY |
4113 | int __init f2fs_init_bio_entry_cache(void) |
4114 | { | |
98510003 | 4115 | bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab", |
0b20fcec | 4116 | sizeof(struct bio_entry)); |
870af777 | 4117 | return bio_entry_slab ? 0 : -ENOMEM; |
0b20fcec CY |
4118 | } |
4119 | ||
f543805f | 4120 | void f2fs_destroy_bio_entry_cache(void) |
0b20fcec CY |
4121 | { |
4122 | kmem_cache_destroy(bio_entry_slab); | |
4123 | } | |
1517c1a7 EB |
4124 | |
4125 | static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, | |
4126 | unsigned int flags, struct iomap *iomap, | |
4127 | struct iomap *srcmap) | |
4128 | { | |
4129 | struct f2fs_map_blocks map = {}; | |
4130 | pgoff_t next_pgofs = 0; | |
4131 | int err; | |
4132 | ||
4133 | map.m_lblk = bytes_to_blks(inode, offset); | |
4134 | map.m_len = bytes_to_blks(inode, offset + length - 1) - map.m_lblk + 1; | |
4135 | map.m_next_pgofs = &next_pgofs; | |
4136 | map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint); | |
4137 | if (flags & IOMAP_WRITE) | |
4138 | map.m_may_create = true; | |
4139 | ||
4140 | err = f2fs_map_blocks(inode, &map, flags & IOMAP_WRITE, | |
4141 | F2FS_GET_BLOCK_DIO); | |
4142 | if (err) | |
4143 | return err; | |
4144 | ||
4145 | iomap->offset = blks_to_bytes(inode, map.m_lblk); | |
4146 | ||
8a2c77bc EB |
4147 | /* |
4148 | * When inline encryption is enabled, sometimes I/O to an encrypted file | |
4149 | * has to be broken up to guarantee DUN contiguity. Handle this by | |
4150 | * limiting the length of the mapping returned. | |
4151 | */ | |
4152 | map.m_len = fscrypt_limit_io_blocks(inode, map.m_lblk, map.m_len); | |
4153 | ||
1517c1a7 EB |
4154 | if (map.m_flags & (F2FS_MAP_MAPPED | F2FS_MAP_UNWRITTEN)) { |
4155 | iomap->length = blks_to_bytes(inode, map.m_len); | |
4156 | if (map.m_flags & F2FS_MAP_MAPPED) { | |
4157 | iomap->type = IOMAP_MAPPED; | |
4158 | iomap->flags |= IOMAP_F_MERGED; | |
4159 | } else { | |
4160 | iomap->type = IOMAP_UNWRITTEN; | |
4161 | } | |
4162 | if (WARN_ON_ONCE(!__is_valid_data_blkaddr(map.m_pblk))) | |
4163 | return -EINVAL; | |
4164 | ||
4165 | iomap->bdev = map.m_bdev; | |
4166 | iomap->addr = blks_to_bytes(inode, map.m_pblk); | |
4167 | } else { | |
4168 | iomap->length = blks_to_bytes(inode, next_pgofs) - | |
4169 | iomap->offset; | |
4170 | iomap->type = IOMAP_HOLE; | |
4171 | iomap->addr = IOMAP_NULL_ADDR; | |
4172 | } | |
4173 | ||
4174 | if (map.m_flags & F2FS_MAP_NEW) | |
4175 | iomap->flags |= IOMAP_F_NEW; | |
4176 | if ((inode->i_state & I_DIRTY_DATASYNC) || | |
4177 | offset + length > i_size_read(inode)) | |
4178 | iomap->flags |= IOMAP_F_DIRTY; | |
4179 | ||
4180 | return 0; | |
4181 | } | |
4182 | ||
4183 | const struct iomap_ops f2fs_iomap_ops = { | |
4184 | .iomap_begin = f2fs_iomap_begin, | |
4185 | }; |