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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 | { | |
42 | if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE, | |
43 | 0, BIOSET_NEED_BVECS)) | |
44 | return -ENOMEM; | |
45 | return 0; | |
46 | } | |
47 | ||
48 | void f2fs_destroy_bioset(void) | |
49 | { | |
50 | bioset_exit(&f2fs_bioset); | |
51 | } | |
52 | ||
36951b38 CY |
53 | static bool __is_cp_guaranteed(struct page *page) |
54 | { | |
55 | struct address_space *mapping = page->mapping; | |
56 | struct inode *inode; | |
57 | struct f2fs_sb_info *sbi; | |
58 | ||
59 | if (!mapping) | |
60 | return false; | |
61 | ||
62 | inode = mapping->host; | |
63 | sbi = F2FS_I_SB(inode); | |
64 | ||
65 | if (inode->i_ino == F2FS_META_INO(sbi) || | |
a87aff1d | 66 | inode->i_ino == F2FS_NODE_INO(sbi) || |
b763f3be CY |
67 | S_ISDIR(inode->i_mode)) |
68 | return true; | |
69 | ||
70 | if (f2fs_is_compressed_page(page)) | |
71 | return false; | |
3db1de0e | 72 | if ((S_ISREG(inode->i_mode) && IS_NOQUOTA(inode)) || |
b763f3be | 73 | page_private_gcing(page)) |
36951b38 CY |
74 | return true; |
75 | return false; | |
76 | } | |
77 | ||
5f9abab4 JK |
78 | static enum count_type __read_io_type(struct page *page) |
79 | { | |
4969c06a | 80 | struct address_space *mapping = page_file_mapping(page); |
5f9abab4 JK |
81 | |
82 | if (mapping) { | |
83 | struct inode *inode = mapping->host; | |
84 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
85 | ||
86 | if (inode->i_ino == F2FS_META_INO(sbi)) | |
87 | return F2FS_RD_META; | |
88 | ||
89 | if (inode->i_ino == F2FS_NODE_INO(sbi)) | |
90 | return F2FS_RD_NODE; | |
91 | } | |
92 | return F2FS_RD_DATA; | |
93 | } | |
94 | ||
6dbb1796 EB |
95 | /* postprocessing steps for read bios */ |
96 | enum bio_post_read_step { | |
7f59b277 EB |
97 | #ifdef CONFIG_FS_ENCRYPTION |
98 | STEP_DECRYPT = 1 << 0, | |
99 | #else | |
100 | STEP_DECRYPT = 0, /* compile out the decryption-related code */ | |
101 | #endif | |
102 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
103 | STEP_DECOMPRESS = 1 << 1, | |
104 | #else | |
105 | STEP_DECOMPRESS = 0, /* compile out the decompression-related code */ | |
106 | #endif | |
107 | #ifdef CONFIG_FS_VERITY | |
108 | STEP_VERITY = 1 << 2, | |
109 | #else | |
110 | STEP_VERITY = 0, /* compile out the verity-related code */ | |
111 | #endif | |
6dbb1796 EB |
112 | }; |
113 | ||
114 | struct bio_post_read_ctx { | |
115 | struct bio *bio; | |
4c8ff709 | 116 | struct f2fs_sb_info *sbi; |
6dbb1796 | 117 | struct work_struct work; |
6dbb1796 | 118 | unsigned int enabled_steps; |
4931e0c9 | 119 | block_t fs_blkaddr; |
6dbb1796 EB |
120 | }; |
121 | ||
bff139b4 | 122 | static void f2fs_finish_read_bio(struct bio *bio, bool in_task) |
93dfe2ac | 123 | { |
6dbb1796 | 124 | struct bio_vec *bv; |
6dc4f100 | 125 | struct bvec_iter_all iter_all; |
93dfe2ac | 126 | |
7f59b277 EB |
127 | /* |
128 | * Update and unlock the bio's pagecache pages, and put the | |
129 | * decompression context for any compressed pages. | |
130 | */ | |
2b070cfe | 131 | bio_for_each_segment_all(bv, bio, iter_all) { |
7f59b277 | 132 | struct page *page = bv->bv_page; |
6dbb1796 | 133 | |
7f59b277 EB |
134 | if (f2fs_is_compressed_page(page)) { |
135 | if (bio->bi_status) | |
bff139b4 DJ |
136 | f2fs_end_read_compressed_page(page, true, 0, |
137 | in_task); | |
138 | f2fs_put_page_dic(page, in_task); | |
4c8ff709 CY |
139 | continue; |
140 | } | |
4c8ff709 | 141 | |
7f59b277 | 142 | /* PG_error was set if decryption or verity failed. */ |
6dbb1796 EB |
143 | if (bio->bi_status || PageError(page)) { |
144 | ClearPageUptodate(page); | |
fb7d70db JK |
145 | /* will re-read again later */ |
146 | ClearPageError(page); | |
6dbb1796 EB |
147 | } else { |
148 | SetPageUptodate(page); | |
149 | } | |
5f9abab4 | 150 | dec_page_count(F2FS_P_SB(page), __read_io_type(page)); |
6dbb1796 EB |
151 | unlock_page(page); |
152 | } | |
79bbefb1 | 153 | |
7f59b277 EB |
154 | if (bio->bi_private) |
155 | mempool_free(bio->bi_private, bio_post_read_ctx_pool); | |
156 | bio_put(bio); | |
4c8ff709 | 157 | } |
4c8ff709 | 158 | |
7f59b277 | 159 | static void f2fs_verify_bio(struct work_struct *work) |
6dbb1796 EB |
160 | { |
161 | struct bio_post_read_ctx *ctx = | |
162 | container_of(work, struct bio_post_read_ctx, work); | |
644c8c92 | 163 | struct bio *bio = ctx->bio; |
7f59b277 | 164 | bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS); |
644c8c92 EB |
165 | |
166 | /* | |
704528d8 | 167 | * fsverity_verify_bio() may call readahead() again, and while verity |
7f59b277 EB |
168 | * will be disabled for this, decryption and/or decompression may still |
169 | * be needed, resulting in another bio_post_read_ctx being allocated. | |
170 | * So to prevent deadlocks we need to release the current ctx to the | |
171 | * mempool first. This assumes that verity is the last post-read step. | |
644c8c92 EB |
172 | */ |
173 | mempool_free(ctx, bio_post_read_ctx_pool); | |
174 | bio->bi_private = NULL; | |
6dbb1796 | 175 | |
7f59b277 EB |
176 | /* |
177 | * Verify the bio's pages with fs-verity. Exclude compressed pages, | |
178 | * as those were handled separately by f2fs_end_read_compressed_page(). | |
179 | */ | |
180 | if (may_have_compressed_pages) { | |
181 | struct bio_vec *bv; | |
182 | struct bvec_iter_all iter_all; | |
183 | ||
184 | bio_for_each_segment_all(bv, bio, iter_all) { | |
185 | struct page *page = bv->bv_page; | |
186 | ||
187 | if (!f2fs_is_compressed_page(page) && | |
188 | !PageError(page) && !fsverity_verify_page(page)) | |
189 | SetPageError(page); | |
190 | } | |
191 | } else { | |
192 | fsverity_verify_bio(bio); | |
4c8ff709 | 193 | } |
6dbb1796 | 194 | |
bff139b4 | 195 | f2fs_finish_read_bio(bio, true); |
6dbb1796 EB |
196 | } |
197 | ||
7f59b277 EB |
198 | /* |
199 | * If the bio's data needs to be verified with fs-verity, then enqueue the | |
200 | * verity work for the bio. Otherwise finish the bio now. | |
201 | * | |
202 | * Note that to avoid deadlocks, the verity work can't be done on the | |
203 | * decryption/decompression workqueue. This is because verifying the data pages | |
204 | * can involve reading verity metadata pages from the file, and these verity | |
205 | * metadata pages may be encrypted and/or compressed. | |
206 | */ | |
bff139b4 | 207 | static void f2fs_verify_and_finish_bio(struct bio *bio, bool in_task) |
95ae251f | 208 | { |
7f59b277 | 209 | struct bio_post_read_ctx *ctx = bio->bi_private; |
4c8ff709 | 210 | |
7f59b277 EB |
211 | if (ctx && (ctx->enabled_steps & STEP_VERITY)) { |
212 | INIT_WORK(&ctx->work, f2fs_verify_bio); | |
4c8ff709 | 213 | fsverity_enqueue_verify_work(&ctx->work); |
7f59b277 | 214 | } else { |
bff139b4 | 215 | f2fs_finish_read_bio(bio, in_task); |
4c8ff709 | 216 | } |
4c8ff709 | 217 | } |
95ae251f | 218 | |
7f59b277 EB |
219 | /* |
220 | * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last | |
221 | * remaining page was read by @ctx->bio. | |
222 | * | |
223 | * Note that a bio may span clusters (even a mix of compressed and uncompressed | |
224 | * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates | |
225 | * that the bio includes at least one compressed page. The actual decompression | |
226 | * is done on a per-cluster basis, not a per-bio basis. | |
227 | */ | |
bff139b4 DJ |
228 | static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx, |
229 | bool in_task) | |
6dbb1796 | 230 | { |
7f59b277 EB |
231 | struct bio_vec *bv; |
232 | struct bvec_iter_all iter_all; | |
233 | bool all_compressed = true; | |
4931e0c9 | 234 | block_t blkaddr = ctx->fs_blkaddr; |
4c8ff709 | 235 | |
7f59b277 EB |
236 | bio_for_each_segment_all(bv, ctx->bio, iter_all) { |
237 | struct page *page = bv->bv_page; | |
4c8ff709 | 238 | |
7f59b277 EB |
239 | /* PG_error was set if decryption failed. */ |
240 | if (f2fs_is_compressed_page(page)) | |
6ce19aff | 241 | f2fs_end_read_compressed_page(page, PageError(page), |
bff139b4 | 242 | blkaddr, in_task); |
7f59b277 EB |
243 | else |
244 | all_compressed = false; | |
6ce19aff CY |
245 | |
246 | blkaddr++; | |
6dbb1796 | 247 | } |
4c8ff709 | 248 | |
7f59b277 EB |
249 | /* |
250 | * Optimization: if all the bio's pages are compressed, then scheduling | |
251 | * the per-bio verity work is unnecessary, as verity will be fully | |
252 | * handled at the compression cluster level. | |
253 | */ | |
254 | if (all_compressed) | |
255 | ctx->enabled_steps &= ~STEP_VERITY; | |
6dbb1796 EB |
256 | } |
257 | ||
7f59b277 | 258 | static void f2fs_post_read_work(struct work_struct *work) |
6dbb1796 | 259 | { |
7f59b277 EB |
260 | struct bio_post_read_ctx *ctx = |
261 | container_of(work, struct bio_post_read_ctx, work); | |
262 | ||
263 | if (ctx->enabled_steps & STEP_DECRYPT) | |
264 | fscrypt_decrypt_bio(ctx->bio); | |
265 | ||
266 | if (ctx->enabled_steps & STEP_DECOMPRESS) | |
bff139b4 | 267 | f2fs_handle_step_decompress(ctx, true); |
7f59b277 | 268 | |
bff139b4 | 269 | f2fs_verify_and_finish_bio(ctx->bio, true); |
6dbb1796 EB |
270 | } |
271 | ||
272 | static void f2fs_read_end_io(struct bio *bio) | |
273 | { | |
c45d6002 | 274 | struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio)); |
a4b68176 | 275 | struct bio_post_read_ctx *ctx; |
bff139b4 | 276 | bool intask = in_task(); |
a4b68176 DJ |
277 | |
278 | iostat_update_and_unbind_ctx(bio, 0); | |
279 | ctx = bio->bi_private; | |
c45d6002 CY |
280 | |
281 | if (time_to_inject(sbi, FAULT_READ_IO)) { | |
282 | f2fs_show_injection_info(sbi, FAULT_READ_IO); | |
4e4cbee9 | 283 | bio->bi_status = BLK_STS_IOERR; |
55523519 | 284 | } |
8b038c70 | 285 | |
7f59b277 | 286 | if (bio->bi_status) { |
bff139b4 | 287 | f2fs_finish_read_bio(bio, intask); |
6dbb1796 | 288 | return; |
f1e88660 | 289 | } |
6dbb1796 | 290 | |
bff139b4 DJ |
291 | if (ctx) { |
292 | unsigned int enabled_steps = ctx->enabled_steps & | |
293 | (STEP_DECRYPT | STEP_DECOMPRESS); | |
294 | ||
295 | /* | |
296 | * If we have only decompression step between decompression and | |
297 | * decrypt, we don't need post processing for this. | |
298 | */ | |
299 | if (enabled_steps == STEP_DECOMPRESS && | |
300 | !f2fs_low_mem_mode(sbi)) { | |
301 | f2fs_handle_step_decompress(ctx, intask); | |
302 | } else if (enabled_steps) { | |
303 | INIT_WORK(&ctx->work, f2fs_post_read_work); | |
304 | queue_work(ctx->sbi->post_read_wq, &ctx->work); | |
305 | return; | |
306 | } | |
7f59b277 | 307 | } |
bff139b4 DJ |
308 | |
309 | f2fs_verify_and_finish_bio(bio, intask); | |
f1e88660 JK |
310 | } |
311 | ||
4246a0b6 | 312 | static void f2fs_write_end_io(struct bio *bio) |
93dfe2ac | 313 | { |
a4b68176 | 314 | struct f2fs_sb_info *sbi; |
f568849e | 315 | struct bio_vec *bvec; |
6dc4f100 | 316 | struct bvec_iter_all iter_all; |
93dfe2ac | 317 | |
a4b68176 DJ |
318 | iostat_update_and_unbind_ctx(bio, 1); |
319 | sbi = bio->bi_private; | |
320 | ||
6f5c2ed0 | 321 | if (time_to_inject(sbi, FAULT_WRITE_IO)) { |
c45d6002 | 322 | f2fs_show_injection_info(sbi, FAULT_WRITE_IO); |
6f5c2ed0 CY |
323 | bio->bi_status = BLK_STS_IOERR; |
324 | } | |
325 | ||
2b070cfe | 326 | bio_for_each_segment_all(bvec, bio, iter_all) { |
93dfe2ac | 327 | struct page *page = bvec->bv_page; |
36951b38 | 328 | enum count_type type = WB_DATA_TYPE(page); |
93dfe2ac | 329 | |
b763f3be CY |
330 | if (page_private_dummy(page)) { |
331 | clear_page_private_dummy(page); | |
0a595eba JK |
332 | unlock_page(page); |
333 | mempool_free(page, sbi->write_io_dummy); | |
334 | ||
4e4cbee9 | 335 | if (unlikely(bio->bi_status)) |
0a595eba JK |
336 | f2fs_stop_checkpoint(sbi, true); |
337 | continue; | |
338 | } | |
339 | ||
d2d0727b | 340 | fscrypt_finalize_bounce_page(&page); |
4375a336 | 341 | |
4c8ff709 CY |
342 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
343 | if (f2fs_is_compressed_page(page)) { | |
344 | f2fs_compress_write_end_io(bio, page); | |
345 | continue; | |
346 | } | |
347 | #endif | |
348 | ||
4e4cbee9 | 349 | if (unlikely(bio->bi_status)) { |
5114a97a | 350 | mapping_set_error(page->mapping, -EIO); |
b1ca321d JK |
351 | if (type == F2FS_WB_CP_DATA) |
352 | f2fs_stop_checkpoint(sbi, true); | |
93dfe2ac | 353 | } |
7dff55d2 YH |
354 | |
355 | f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) && | |
356 | page->index != nid_of_node(page)); | |
357 | ||
36951b38 | 358 | dec_page_count(sbi, type); |
50fa53ec CY |
359 | if (f2fs_in_warm_node_list(sbi, page)) |
360 | f2fs_del_fsync_node_entry(sbi, page); | |
b763f3be | 361 | clear_page_private_gcing(page); |
93dfe2ac | 362 | end_page_writeback(page); |
f568849e | 363 | } |
36951b38 | 364 | if (!get_pages(sbi, F2FS_WB_CP_DATA) && |
f5730184 | 365 | wq_has_sleeper(&sbi->cp_wait)) |
93dfe2ac JK |
366 | wake_up(&sbi->cp_wait); |
367 | ||
368 | bio_put(bio); | |
369 | } | |
370 | ||
3c62be17 | 371 | struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, |
5189810a | 372 | block_t blk_addr, sector_t *sector) |
3c62be17 JK |
373 | { |
374 | struct block_device *bdev = sbi->sb->s_bdev; | |
375 | int i; | |
376 | ||
0916878d DLM |
377 | if (f2fs_is_multi_device(sbi)) { |
378 | for (i = 0; i < sbi->s_ndevs; i++) { | |
379 | if (FDEV(i).start_blk <= blk_addr && | |
380 | FDEV(i).end_blk >= blk_addr) { | |
381 | blk_addr -= FDEV(i).start_blk; | |
382 | bdev = FDEV(i).bdev; | |
383 | break; | |
384 | } | |
3c62be17 JK |
385 | } |
386 | } | |
5189810a CH |
387 | |
388 | if (sector) | |
389 | *sector = SECTOR_FROM_BLOCK(blk_addr); | |
3c62be17 JK |
390 | return bdev; |
391 | } | |
392 | ||
393 | int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) | |
394 | { | |
395 | int i; | |
396 | ||
0916878d DLM |
397 | if (!f2fs_is_multi_device(sbi)) |
398 | return 0; | |
399 | ||
3c62be17 JK |
400 | for (i = 0; i < sbi->s_ndevs; i++) |
401 | if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr) | |
402 | return i; | |
403 | return 0; | |
404 | } | |
405 | ||
7649c873 | 406 | static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio) |
64bf0eef CH |
407 | { |
408 | unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1; | |
0adc2ab0 | 409 | unsigned int fua_flag, meta_flag, io_flag; |
7649c873 | 410 | blk_opf_t op_flags = 0; |
0adc2ab0 JK |
411 | |
412 | if (fio->op != REQ_OP_WRITE) | |
413 | return 0; | |
414 | if (fio->type == DATA) | |
415 | io_flag = fio->sbi->data_io_flag; | |
416 | else if (fio->type == NODE) | |
417 | io_flag = fio->sbi->node_io_flag; | |
418 | else | |
419 | return 0; | |
420 | ||
421 | fua_flag = io_flag & temp_mask; | |
422 | meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask; | |
64bf0eef CH |
423 | |
424 | /* | |
425 | * data/node io flag bits per temp: | |
426 | * REQ_META | REQ_FUA | | |
427 | * 5 | 4 | 3 | 2 | 1 | 0 | | |
428 | * Cold | Warm | Hot | Cold | Warm | Hot | | |
429 | */ | |
430 | if ((1 << fio->temp) & meta_flag) | |
0adc2ab0 | 431 | op_flags |= REQ_META; |
64bf0eef | 432 | if ((1 << fio->temp) & fua_flag) |
0adc2ab0 JK |
433 | op_flags |= REQ_FUA; |
434 | return op_flags; | |
64bf0eef CH |
435 | } |
436 | ||
b757f6ed | 437 | static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages) |
940a6d34 | 438 | { |
b757f6ed | 439 | struct f2fs_sb_info *sbi = fio->sbi; |
5189810a CH |
440 | struct block_device *bdev; |
441 | sector_t sector; | |
940a6d34 GZ |
442 | struct bio *bio; |
443 | ||
5189810a | 444 | bdev = f2fs_target_device(sbi, fio->new_blkaddr, §or); |
0adc2ab0 JK |
445 | bio = bio_alloc_bioset(bdev, npages, |
446 | fio->op | fio->op_flags | f2fs_io_flags(fio), | |
447 | GFP_NOIO, &f2fs_bioset); | |
5189810a | 448 | bio->bi_iter.bi_sector = sector; |
b757f6ed | 449 | if (is_read_io(fio->op)) { |
0cdd3195 HL |
450 | bio->bi_end_io = f2fs_read_end_io; |
451 | bio->bi_private = NULL; | |
452 | } else { | |
453 | bio->bi_end_io = f2fs_write_end_io; | |
454 | bio->bi_private = sbi; | |
0cdd3195 | 455 | } |
a4b68176 DJ |
456 | iostat_alloc_and_bind_ctx(sbi, bio, NULL); |
457 | ||
b757f6ed CY |
458 | if (fio->io_wbc) |
459 | wbc_init_bio(fio->io_wbc, bio); | |
940a6d34 GZ |
460 | |
461 | return bio; | |
462 | } | |
463 | ||
27aacd28 ST |
464 | static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode, |
465 | pgoff_t first_idx, | |
466 | const struct f2fs_io_info *fio, | |
467 | gfp_t gfp_mask) | |
468 | { | |
469 | /* | |
470 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
471 | * read/write raw data without encryption. | |
472 | */ | |
473 | if (!fio || !fio->encrypted_page) | |
474 | fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask); | |
475 | } | |
476 | ||
477 | static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode, | |
478 | pgoff_t next_idx, | |
479 | const struct f2fs_io_info *fio) | |
480 | { | |
481 | /* | |
482 | * The f2fs garbage collector sets ->encrypted_page when it wants to | |
483 | * read/write raw data without encryption. | |
484 | */ | |
485 | if (fio && fio->encrypted_page) | |
486 | return !bio_has_crypt_ctx(bio); | |
487 | ||
488 | return fscrypt_mergeable_bio(bio, inode, next_idx); | |
489 | } | |
490 | ||
4fc29c1a LT |
491 | static inline void __submit_bio(struct f2fs_sb_info *sbi, |
492 | struct bio *bio, enum page_type type) | |
f5730184 | 493 | { |
4fc29c1a | 494 | if (!is_read_io(bio_op(bio))) { |
0a595eba JK |
495 | unsigned int start; |
496 | ||
0a595eba JK |
497 | if (type != DATA && type != NODE) |
498 | goto submit_io; | |
499 | ||
b0332a0f | 500 | if (f2fs_lfs_mode(sbi) && current->plug) |
3bb09a0e TY |
501 | blk_finish_plug(current->plug); |
502 | ||
39f71b7e | 503 | if (!F2FS_IO_ALIGNED(sbi)) |
8223ecc4 CY |
504 | goto submit_io; |
505 | ||
0a595eba JK |
506 | start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS; |
507 | start %= F2FS_IO_SIZE(sbi); | |
508 | ||
509 | if (start == 0) | |
510 | goto submit_io; | |
511 | ||
512 | /* fill dummy pages */ | |
513 | for (; start < F2FS_IO_SIZE(sbi); start++) { | |
514 | struct page *page = | |
515 | mempool_alloc(sbi->write_io_dummy, | |
bc73a4b2 | 516 | GFP_NOIO | __GFP_NOFAIL); |
0a595eba JK |
517 | f2fs_bug_on(sbi, !page); |
518 | ||
0a595eba | 519 | lock_page(page); |
b763f3be CY |
520 | |
521 | zero_user_segment(page, 0, PAGE_SIZE); | |
522 | set_page_private_dummy(page); | |
523 | ||
0a595eba JK |
524 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) |
525 | f2fs_bug_on(sbi, 1); | |
526 | } | |
527 | /* | |
528 | * In the NODE case, we lose next block address chain. So, we | |
529 | * need to do checkpoint in f2fs_sync_file. | |
530 | */ | |
531 | if (type == NODE) | |
532 | set_sbi_flag(sbi, SBI_NEED_CP); | |
19a5f5e2 | 533 | } |
0a595eba | 534 | submit_io: |
554b5125 JK |
535 | if (is_read_io(bio_op(bio))) |
536 | trace_f2fs_submit_read_bio(sbi->sb, type, bio); | |
537 | else | |
538 | trace_f2fs_submit_write_bio(sbi->sb, type, bio); | |
a4b68176 DJ |
539 | |
540 | iostat_update_submit_ctx(bio, type); | |
4e49ea4a | 541 | submit_bio(bio); |
f5730184 JK |
542 | } |
543 | ||
4c8ff709 CY |
544 | void f2fs_submit_bio(struct f2fs_sb_info *sbi, |
545 | struct bio *bio, enum page_type type) | |
546 | { | |
547 | __submit_bio(sbi, bio, type); | |
548 | } | |
549 | ||
458e6197 | 550 | static void __submit_merged_bio(struct f2fs_bio_info *io) |
93dfe2ac | 551 | { |
458e6197 | 552 | struct f2fs_io_info *fio = &io->fio; |
93dfe2ac JK |
553 | |
554 | if (!io->bio) | |
555 | return; | |
556 | ||
04d328de | 557 | if (is_read_io(fio->op)) |
554b5125 | 558 | trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio); |
6a8f8ca5 | 559 | else |
554b5125 | 560 | trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio); |
04d328de | 561 | |
4fc29c1a | 562 | __submit_bio(io->sbi, io->bio, fio->type); |
93dfe2ac JK |
563 | io->bio = NULL; |
564 | } | |
565 | ||
8648de2c | 566 | static bool __has_merged_page(struct bio *bio, struct inode *inode, |
bab475c5 | 567 | struct page *page, nid_t ino) |
0fd785eb | 568 | { |
0fd785eb | 569 | struct bio_vec *bvec; |
6dc4f100 | 570 | struct bvec_iter_all iter_all; |
0fd785eb | 571 | |
8648de2c | 572 | if (!bio) |
0fd785eb | 573 | return false; |
0c3a5797 | 574 | |
bab475c5 | 575 | if (!inode && !page && !ino) |
0c3a5797 | 576 | return true; |
0fd785eb | 577 | |
8648de2c | 578 | bio_for_each_segment_all(bvec, bio, iter_all) { |
4c8ff709 | 579 | struct page *target = bvec->bv_page; |
0fd785eb | 580 | |
4c8ff709 | 581 | if (fscrypt_is_bounce_page(target)) { |
d2d0727b | 582 | target = fscrypt_pagecache_page(target); |
4c8ff709 CY |
583 | if (IS_ERR(target)) |
584 | continue; | |
585 | } | |
586 | if (f2fs_is_compressed_page(target)) { | |
587 | target = f2fs_compress_control_page(target); | |
588 | if (IS_ERR(target)) | |
589 | continue; | |
590 | } | |
0fd785eb | 591 | |
0c3a5797 CY |
592 | if (inode && inode == target->mapping->host) |
593 | return true; | |
bab475c5 CY |
594 | if (page && page == target) |
595 | return true; | |
0c3a5797 | 596 | if (ino && ino == ino_of_node(target)) |
0fd785eb | 597 | return true; |
0fd785eb CY |
598 | } |
599 | ||
0fd785eb CY |
600 | return false; |
601 | } | |
602 | ||
908ea654 YY |
603 | int f2fs_init_write_merge_io(struct f2fs_sb_info *sbi) |
604 | { | |
605 | int i; | |
606 | ||
607 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
608 | int n = (i == META) ? 1 : NR_TEMP_TYPE; | |
609 | int j; | |
610 | ||
611 | sbi->write_io[i] = f2fs_kmalloc(sbi, | |
612 | array_size(n, sizeof(struct f2fs_bio_info)), | |
613 | GFP_KERNEL); | |
614 | if (!sbi->write_io[i]) | |
615 | return -ENOMEM; | |
616 | ||
617 | for (j = HOT; j < n; j++) { | |
618 | init_f2fs_rwsem(&sbi->write_io[i][j].io_rwsem); | |
619 | sbi->write_io[i][j].sbi = sbi; | |
620 | sbi->write_io[i][j].bio = NULL; | |
621 | spin_lock_init(&sbi->write_io[i][j].io_lock); | |
622 | INIT_LIST_HEAD(&sbi->write_io[i][j].io_list); | |
623 | INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list); | |
624 | init_f2fs_rwsem(&sbi->write_io[i][j].bio_list_lock); | |
625 | } | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
b9109b0e | 631 | static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi, |
a912b54d | 632 | enum page_type type, enum temp_type temp) |
93dfe2ac JK |
633 | { |
634 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
a912b54d | 635 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; |
93dfe2ac | 636 | |
e4544b63 | 637 | f2fs_down_write(&io->io_rwsem); |
458e6197 JK |
638 | |
639 | /* change META to META_FLUSH in the checkpoint procedure */ | |
640 | if (type >= META_FLUSH) { | |
641 | io->fio.type = META_FLUSH; | |
64bf0eef | 642 | io->bio->bi_opf |= REQ_META | REQ_PRIO | REQ_SYNC; |
70fd7614 | 643 | if (!test_opt(sbi, NOBARRIER)) |
64bf0eef | 644 | io->bio->bi_opf |= REQ_PREFLUSH | REQ_FUA; |
458e6197 JK |
645 | } |
646 | __submit_merged_bio(io); | |
e4544b63 | 647 | f2fs_up_write(&io->io_rwsem); |
93dfe2ac JK |
648 | } |
649 | ||
a912b54d | 650 | static void __submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
651 | struct inode *inode, struct page *page, |
652 | nid_t ino, enum page_type type, bool force) | |
0c3a5797 | 653 | { |
a912b54d | 654 | enum temp_type temp; |
1e771e83 | 655 | bool ret = true; |
a912b54d JK |
656 | |
657 | for (temp = HOT; temp < NR_TEMP_TYPE; temp++) { | |
1e771e83 YS |
658 | if (!force) { |
659 | enum page_type btype = PAGE_TYPE_OF_BIO(type); | |
660 | struct f2fs_bio_info *io = sbi->write_io[btype] + temp; | |
a912b54d | 661 | |
e4544b63 | 662 | f2fs_down_read(&io->io_rwsem); |
8648de2c | 663 | ret = __has_merged_page(io->bio, inode, page, ino); |
e4544b63 | 664 | f2fs_up_read(&io->io_rwsem); |
1e771e83 YS |
665 | } |
666 | if (ret) | |
667 | __f2fs_submit_merged_write(sbi, type, temp); | |
a912b54d JK |
668 | |
669 | /* TODO: use HOT temp only for meta pages now. */ | |
670 | if (type >= META) | |
671 | break; | |
672 | } | |
0c3a5797 CY |
673 | } |
674 | ||
b9109b0e | 675 | void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type) |
0c3a5797 | 676 | { |
adcc00f7 | 677 | __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true); |
0c3a5797 CY |
678 | } |
679 | ||
b9109b0e | 680 | void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi, |
bab475c5 CY |
681 | struct inode *inode, struct page *page, |
682 | nid_t ino, enum page_type type) | |
0c3a5797 | 683 | { |
bab475c5 | 684 | __submit_merged_write_cond(sbi, inode, page, ino, type, false); |
0c3a5797 CY |
685 | } |
686 | ||
b9109b0e | 687 | void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi) |
406657dd | 688 | { |
b9109b0e JK |
689 | f2fs_submit_merged_write(sbi, DATA); |
690 | f2fs_submit_merged_write(sbi, NODE); | |
691 | f2fs_submit_merged_write(sbi, META); | |
406657dd CY |
692 | } |
693 | ||
93dfe2ac JK |
694 | /* |
695 | * Fill the locked page with data located in the block address. | |
771a9a71 | 696 | * A caller needs to unlock the page on failure. |
93dfe2ac | 697 | */ |
05ca3632 | 698 | int f2fs_submit_page_bio(struct f2fs_io_info *fio) |
93dfe2ac | 699 | { |
93dfe2ac | 700 | struct bio *bio; |
0b81d077 JK |
701 | struct page *page = fio->encrypted_page ? |
702 | fio->encrypted_page : fio->page; | |
93dfe2ac | 703 | |
c9b60788 | 704 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, |
93770ab7 CY |
705 | fio->is_por ? META_POR : (__is_meta_io(fio) ? |
706 | META_GENERIC : DATA_GENERIC_ENHANCE))) | |
10f966bb | 707 | return -EFSCORRUPTED; |
c9b60788 | 708 | |
2ace38e0 | 709 | trace_f2fs_submit_page_bio(page, fio); |
93dfe2ac JK |
710 | |
711 | /* Allocate a new bio */ | |
b757f6ed | 712 | bio = __bio_alloc(fio, 1); |
93dfe2ac | 713 | |
27aacd28 ST |
714 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
715 | fio->page->index, fio, GFP_NOIO); | |
716 | ||
09cbfeaf | 717 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
93dfe2ac | 718 | bio_put(bio); |
93dfe2ac JK |
719 | return -EFAULT; |
720 | } | |
78efac53 CY |
721 | |
722 | if (fio->io_wbc && !is_read_io(fio->op)) | |
34e51a5e | 723 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
78efac53 | 724 | |
5f9abab4 JK |
725 | inc_page_count(fio->sbi, is_read_io(fio->op) ? |
726 | __read_io_type(page): WB_DATA_TYPE(fio->page)); | |
4c58ed07 CY |
727 | |
728 | __submit_bio(fio->sbi, bio, fio->type); | |
93dfe2ac JK |
729 | return 0; |
730 | } | |
731 | ||
8896cbdf CY |
732 | static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, |
733 | block_t last_blkaddr, block_t cur_blkaddr) | |
734 | { | |
10208567 JK |
735 | if (unlikely(sbi->max_io_bytes && |
736 | bio->bi_iter.bi_size >= sbi->max_io_bytes)) | |
737 | return false; | |
8896cbdf CY |
738 | if (last_blkaddr + 1 != cur_blkaddr) |
739 | return false; | |
309dca30 | 740 | return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL); |
8896cbdf CY |
741 | } |
742 | ||
743 | static bool io_type_is_mergeable(struct f2fs_bio_info *io, | |
744 | struct f2fs_io_info *fio) | |
745 | { | |
746 | if (io->fio.op != fio->op) | |
747 | return false; | |
748 | return io->fio.op_flags == fio->op_flags; | |
749 | } | |
750 | ||
751 | static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio, | |
752 | struct f2fs_bio_info *io, | |
753 | struct f2fs_io_info *fio, | |
754 | block_t last_blkaddr, | |
755 | block_t cur_blkaddr) | |
756 | { | |
c72db71e CY |
757 | if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) { |
758 | unsigned int filled_blocks = | |
759 | F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size); | |
760 | unsigned int io_size = F2FS_IO_SIZE(sbi); | |
761 | unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt; | |
762 | ||
763 | /* IOs in bio is aligned and left space of vectors is not enough */ | |
764 | if (!(filled_blocks % io_size) && left_vecs < io_size) | |
765 | return false; | |
766 | } | |
8896cbdf CY |
767 | if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr)) |
768 | return false; | |
769 | return io_type_is_mergeable(io, fio); | |
770 | } | |
771 | ||
0b20fcec CY |
772 | static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio, |
773 | struct page *page, enum temp_type temp) | |
774 | { | |
775 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
776 | struct bio_entry *be; | |
777 | ||
32410577 | 778 | be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS, true, NULL); |
0b20fcec CY |
779 | be->bio = bio; |
780 | bio_get(bio); | |
781 | ||
782 | if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE) | |
783 | f2fs_bug_on(sbi, 1); | |
784 | ||
e4544b63 | 785 | f2fs_down_write(&io->bio_list_lock); |
0b20fcec | 786 | list_add_tail(&be->list, &io->bio_list); |
e4544b63 | 787 | f2fs_up_write(&io->bio_list_lock); |
0b20fcec CY |
788 | } |
789 | ||
790 | static void del_bio_entry(struct bio_entry *be) | |
791 | { | |
792 | list_del(&be->list); | |
793 | kmem_cache_free(bio_entry_slab, be); | |
794 | } | |
795 | ||
27aacd28 | 796 | static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio, |
0b20fcec CY |
797 | struct page *page) |
798 | { | |
27aacd28 | 799 | struct f2fs_sb_info *sbi = fio->sbi; |
0b20fcec CY |
800 | enum temp_type temp; |
801 | bool found = false; | |
802 | int ret = -EAGAIN; | |
803 | ||
804 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
805 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
806 | struct list_head *head = &io->bio_list; | |
807 | struct bio_entry *be; | |
808 | ||
e4544b63 | 809 | f2fs_down_write(&io->bio_list_lock); |
0b20fcec CY |
810 | list_for_each_entry(be, head, list) { |
811 | if (be->bio != *bio) | |
812 | continue; | |
813 | ||
814 | found = true; | |
815 | ||
27aacd28 ST |
816 | f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio, |
817 | *fio->last_block, | |
818 | fio->new_blkaddr)); | |
819 | if (f2fs_crypt_mergeable_bio(*bio, | |
820 | fio->page->mapping->host, | |
821 | fio->page->index, fio) && | |
822 | bio_add_page(*bio, page, PAGE_SIZE, 0) == | |
823 | PAGE_SIZE) { | |
0b20fcec CY |
824 | ret = 0; |
825 | break; | |
826 | } | |
827 | ||
27aacd28 | 828 | /* page can't be merged into bio; submit the bio */ |
0b20fcec CY |
829 | del_bio_entry(be); |
830 | __submit_bio(sbi, *bio, DATA); | |
831 | break; | |
832 | } | |
e4544b63 | 833 | f2fs_up_write(&io->bio_list_lock); |
0b20fcec CY |
834 | } |
835 | ||
836 | if (ret) { | |
837 | bio_put(*bio); | |
838 | *bio = NULL; | |
839 | } | |
840 | ||
841 | return ret; | |
842 | } | |
843 | ||
844 | void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi, | |
845 | struct bio **bio, struct page *page) | |
846 | { | |
847 | enum temp_type temp; | |
848 | bool found = false; | |
849 | struct bio *target = bio ? *bio : NULL; | |
850 | ||
851 | for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) { | |
852 | struct f2fs_bio_info *io = sbi->write_io[DATA] + temp; | |
853 | struct list_head *head = &io->bio_list; | |
854 | struct bio_entry *be; | |
855 | ||
856 | if (list_empty(head)) | |
857 | continue; | |
858 | ||
e4544b63 | 859 | f2fs_down_read(&io->bio_list_lock); |
0b20fcec CY |
860 | list_for_each_entry(be, head, list) { |
861 | if (target) | |
862 | found = (target == be->bio); | |
863 | else | |
864 | found = __has_merged_page(be->bio, NULL, | |
865 | page, 0); | |
866 | if (found) | |
867 | break; | |
868 | } | |
e4544b63 | 869 | f2fs_up_read(&io->bio_list_lock); |
0b20fcec CY |
870 | |
871 | if (!found) | |
872 | continue; | |
873 | ||
874 | found = false; | |
875 | ||
e4544b63 | 876 | f2fs_down_write(&io->bio_list_lock); |
0b20fcec CY |
877 | list_for_each_entry(be, head, list) { |
878 | if (target) | |
879 | found = (target == be->bio); | |
880 | else | |
881 | found = __has_merged_page(be->bio, NULL, | |
882 | page, 0); | |
883 | if (found) { | |
884 | target = be->bio; | |
885 | del_bio_entry(be); | |
886 | break; | |
887 | } | |
888 | } | |
e4544b63 | 889 | f2fs_up_write(&io->bio_list_lock); |
0b20fcec CY |
890 | } |
891 | ||
892 | if (found) | |
893 | __submit_bio(sbi, target, DATA); | |
894 | if (bio && *bio) { | |
895 | bio_put(*bio); | |
896 | *bio = NULL; | |
897 | } | |
898 | } | |
899 | ||
8648de2c CY |
900 | int f2fs_merge_page_bio(struct f2fs_io_info *fio) |
901 | { | |
902 | struct bio *bio = *fio->bio; | |
903 | struct page *page = fio->encrypted_page ? | |
904 | fio->encrypted_page : fio->page; | |
905 | ||
906 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr, | |
907 | __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) | |
10f966bb | 908 | return -EFSCORRUPTED; |
8648de2c CY |
909 | |
910 | trace_f2fs_submit_page_bio(page, fio); | |
8648de2c | 911 | |
8896cbdf | 912 | if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block, |
0b20fcec CY |
913 | fio->new_blkaddr)) |
914 | f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL); | |
8648de2c CY |
915 | alloc_new: |
916 | if (!bio) { | |
a8affc03 | 917 | bio = __bio_alloc(fio, BIO_MAX_VECS); |
27aacd28 ST |
918 | f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host, |
919 | fio->page->index, fio, GFP_NOIO); | |
8648de2c | 920 | |
0b20fcec CY |
921 | add_bio_entry(fio->sbi, bio, page, fio->temp); |
922 | } else { | |
27aacd28 | 923 | if (add_ipu_page(fio, &bio, page)) |
0b20fcec | 924 | goto alloc_new; |
8648de2c CY |
925 | } |
926 | ||
927 | if (fio->io_wbc) | |
9637d517 | 928 | wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); |
8648de2c CY |
929 | |
930 | inc_page_count(fio->sbi, WB_DATA_TYPE(page)); | |
931 | ||
932 | *fio->last_block = fio->new_blkaddr; | |
933 | *fio->bio = bio; | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
fe16efe6 | 938 | void f2fs_submit_page_write(struct f2fs_io_info *fio) |
93dfe2ac | 939 | { |
05ca3632 | 940 | struct f2fs_sb_info *sbi = fio->sbi; |
458e6197 | 941 | enum page_type btype = PAGE_TYPE_OF_BIO(fio->type); |
a912b54d | 942 | struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp; |
4375a336 | 943 | struct page *bio_page; |
93dfe2ac | 944 | |
b9109b0e | 945 | f2fs_bug_on(sbi, is_read_io(fio->op)); |
93dfe2ac | 946 | |
e4544b63 | 947 | f2fs_down_write(&io->io_rwsem); |
fb830fc5 CY |
948 | next: |
949 | if (fio->in_list) { | |
950 | spin_lock(&io->io_lock); | |
951 | if (list_empty(&io->io_list)) { | |
952 | spin_unlock(&io->io_lock); | |
fe16efe6 | 953 | goto out; |
fb830fc5 CY |
954 | } |
955 | fio = list_first_entry(&io->io_list, | |
956 | struct f2fs_io_info, list); | |
957 | list_del(&fio->list); | |
958 | spin_unlock(&io->io_lock); | |
959 | } | |
93dfe2ac | 960 | |
93770ab7 | 961 | verify_fio_blkaddr(fio); |
93dfe2ac | 962 | |
4c8ff709 CY |
963 | if (fio->encrypted_page) |
964 | bio_page = fio->encrypted_page; | |
965 | else if (fio->compressed_page) | |
966 | bio_page = fio->compressed_page; | |
967 | else | |
968 | bio_page = fio->page; | |
36951b38 | 969 | |
ebf7c522 TM |
970 | /* set submitted = true as a return value */ |
971 | fio->submitted = true; | |
d68f735b | 972 | |
b9109b0e | 973 | inc_page_count(sbi, WB_DATA_TYPE(bio_page)); |
93dfe2ac | 974 | |
27aacd28 ST |
975 | if (io->bio && |
976 | (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio, | |
977 | fio->new_blkaddr) || | |
978 | !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host, | |
979 | bio_page->index, fio))) | |
458e6197 | 980 | __submit_merged_bio(io); |
93dfe2ac JK |
981 | alloc_new: |
982 | if (io->bio == NULL) { | |
8223ecc4 CY |
983 | if (F2FS_IO_ALIGNED(sbi) && |
984 | (fio->type == DATA || fio->type == NODE) && | |
0a595eba | 985 | fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) { |
b9109b0e | 986 | dec_page_count(sbi, WB_DATA_TYPE(bio_page)); |
fe16efe6 CY |
987 | fio->retry = true; |
988 | goto skip; | |
0a595eba | 989 | } |
a8affc03 | 990 | io->bio = __bio_alloc(fio, BIO_MAX_VECS); |
27aacd28 ST |
991 | f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host, |
992 | bio_page->index, fio, GFP_NOIO); | |
458e6197 | 993 | io->fio = *fio; |
93dfe2ac JK |
994 | } |
995 | ||
a912b54d | 996 | if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) { |
458e6197 | 997 | __submit_merged_bio(io); |
93dfe2ac JK |
998 | goto alloc_new; |
999 | } | |
1000 | ||
578c6478 | 1001 | if (fio->io_wbc) |
34e51a5e | 1002 | wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); |
578c6478 | 1003 | |
7a9d7548 | 1004 | io->last_block_in_bio = fio->new_blkaddr; |
fb830fc5 CY |
1005 | |
1006 | trace_f2fs_submit_page_write(fio->page, fio); | |
fe16efe6 | 1007 | skip: |
fb830fc5 CY |
1008 | if (fio->in_list) |
1009 | goto next; | |
fe16efe6 | 1010 | out: |
4354994f | 1011 | if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || |
00e09c0b | 1012 | !f2fs_is_checkpoint_ready(sbi)) |
5ce80586 | 1013 | __submit_merged_bio(io); |
e4544b63 | 1014 | f2fs_up_write(&io->io_rwsem); |
93dfe2ac JK |
1015 | } |
1016 | ||
13ba41e3 | 1017 | static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, |
7649c873 | 1018 | unsigned nr_pages, blk_opf_t op_flag, |
7f59b277 | 1019 | pgoff_t first_idx, bool for_write) |
13ba41e3 JK |
1020 | { |
1021 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
13ba41e3 | 1022 | struct bio *bio; |
a4b68176 | 1023 | struct bio_post_read_ctx *ctx = NULL; |
6dbb1796 | 1024 | unsigned int post_read_steps = 0; |
5189810a CH |
1025 | sector_t sector; |
1026 | struct block_device *bdev = f2fs_target_device(sbi, blkaddr, §or); | |
13ba41e3 | 1027 | |
64bf0eef CH |
1028 | bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages), |
1029 | REQ_OP_READ | op_flag, | |
609be106 | 1030 | for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset); |
6dbb1796 | 1031 | if (!bio) |
13ba41e3 | 1032 | return ERR_PTR(-ENOMEM); |
5189810a | 1033 | bio->bi_iter.bi_sector = sector; |
27aacd28 | 1034 | f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); |
13ba41e3 | 1035 | bio->bi_end_io = f2fs_read_end_io; |
13ba41e3 | 1036 | |
27aacd28 | 1037 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
7f59b277 | 1038 | post_read_steps |= STEP_DECRYPT; |
95ae251f | 1039 | |
7f59b277 EB |
1040 | if (f2fs_need_verity(inode, first_idx)) |
1041 | post_read_steps |= STEP_VERITY; | |
1042 | ||
1043 | /* | |
1044 | * STEP_DECOMPRESS is handled specially, since a compressed file might | |
1045 | * contain both compressed and uncompressed clusters. We'll allocate a | |
1046 | * bio_post_read_ctx if the file is compressed, but the caller is | |
1047 | * responsible for enabling STEP_DECOMPRESS if it's actually needed. | |
1048 | */ | |
1049 | ||
1050 | if (post_read_steps || f2fs_compressed_file(inode)) { | |
e8ce5749 | 1051 | /* Due to the mempool, this never fails. */ |
6dbb1796 | 1052 | ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS); |
6dbb1796 | 1053 | ctx->bio = bio; |
4c8ff709 | 1054 | ctx->sbi = sbi; |
6dbb1796 | 1055 | ctx->enabled_steps = post_read_steps; |
4931e0c9 | 1056 | ctx->fs_blkaddr = blkaddr; |
6dbb1796 | 1057 | bio->bi_private = ctx; |
6dbb1796 | 1058 | } |
a4b68176 | 1059 | iostat_alloc_and_bind_ctx(sbi, bio, ctx); |
6dbb1796 | 1060 | |
13ba41e3 JK |
1061 | return bio; |
1062 | } | |
1063 | ||
1064 | /* This can handle encryption stuffs */ | |
1065 | static int f2fs_submit_page_read(struct inode *inode, struct page *page, | |
7649c873 BVA |
1066 | block_t blkaddr, blk_opf_t op_flags, |
1067 | bool for_write) | |
13ba41e3 | 1068 | { |
93770ab7 CY |
1069 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
1070 | struct bio *bio; | |
13ba41e3 | 1071 | |
b7973091 | 1072 | bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags, |
7f59b277 | 1073 | page->index, for_write); |
13ba41e3 JK |
1074 | if (IS_ERR(bio)) |
1075 | return PTR_ERR(bio); | |
1076 | ||
0ded69f6 JK |
1077 | /* wait for GCed page writeback via META_MAPPING */ |
1078 | f2fs_wait_on_block_writeback(inode, blkaddr); | |
1079 | ||
13ba41e3 JK |
1080 | if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { |
1081 | bio_put(bio); | |
1082 | return -EFAULT; | |
1083 | } | |
fb7d70db | 1084 | ClearPageError(page); |
93770ab7 | 1085 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 1086 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
93770ab7 | 1087 | __submit_bio(sbi, bio, DATA); |
13ba41e3 JK |
1088 | return 0; |
1089 | } | |
1090 | ||
46008c6d CY |
1091 | static void __set_data_blkaddr(struct dnode_of_data *dn) |
1092 | { | |
1093 | struct f2fs_node *rn = F2FS_NODE(dn->node_page); | |
1094 | __le32 *addr_array; | |
7a2af766 CY |
1095 | int base = 0; |
1096 | ||
1097 | if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode)) | |
1098 | base = get_extra_isize(dn->inode); | |
46008c6d CY |
1099 | |
1100 | /* Get physical address of data block */ | |
1101 | addr_array = blkaddr_in_node(rn); | |
7a2af766 | 1102 | addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr); |
46008c6d CY |
1103 | } |
1104 | ||
0a8165d7 | 1105 | /* |
eb47b800 JK |
1106 | * Lock ordering for the change of data block address: |
1107 | * ->data_page | |
1108 | * ->node_page | |
1109 | * update block addresses in the node page | |
1110 | */ | |
4d57b86d | 1111 | void f2fs_set_data_blkaddr(struct dnode_of_data *dn) |
eb47b800 | 1112 | { |
bae0ee7a | 1113 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1114 | __set_data_blkaddr(dn); |
1115 | if (set_page_dirty(dn->node_page)) | |
12719ae1 | 1116 | dn->node_changed = true; |
eb47b800 JK |
1117 | } |
1118 | ||
f28b3434 CY |
1119 | void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr) |
1120 | { | |
1121 | dn->data_blkaddr = blkaddr; | |
4d57b86d | 1122 | f2fs_set_data_blkaddr(dn); |
f28b3434 CY |
1123 | f2fs_update_extent_cache(dn); |
1124 | } | |
1125 | ||
46008c6d | 1126 | /* dn->ofs_in_node will be returned with up-to-date last block pointer */ |
4d57b86d | 1127 | int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) |
eb47b800 | 1128 | { |
4081363f | 1129 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
0abd675e | 1130 | int err; |
eb47b800 | 1131 | |
46008c6d CY |
1132 | if (!count) |
1133 | return 0; | |
1134 | ||
91942321 | 1135 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
eb47b800 | 1136 | return -EPERM; |
0abd675e CY |
1137 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1138 | return err; | |
eb47b800 | 1139 | |
46008c6d CY |
1140 | trace_f2fs_reserve_new_blocks(dn->inode, dn->nid, |
1141 | dn->ofs_in_node, count); | |
1142 | ||
bae0ee7a | 1143 | f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true); |
46008c6d CY |
1144 | |
1145 | for (; count > 0; dn->ofs_in_node++) { | |
a2ced1ce | 1146 | block_t blkaddr = f2fs_data_blkaddr(dn); |
5f029c04 | 1147 | |
46008c6d CY |
1148 | if (blkaddr == NULL_ADDR) { |
1149 | dn->data_blkaddr = NEW_ADDR; | |
1150 | __set_data_blkaddr(dn); | |
1151 | count--; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | if (set_page_dirty(dn->node_page)) | |
1156 | dn->node_changed = true; | |
eb47b800 JK |
1157 | return 0; |
1158 | } | |
1159 | ||
46008c6d | 1160 | /* Should keep dn->ofs_in_node unchanged */ |
4d57b86d | 1161 | int f2fs_reserve_new_block(struct dnode_of_data *dn) |
46008c6d CY |
1162 | { |
1163 | unsigned int ofs_in_node = dn->ofs_in_node; | |
1164 | int ret; | |
1165 | ||
4d57b86d | 1166 | ret = f2fs_reserve_new_blocks(dn, 1); |
46008c6d CY |
1167 | dn->ofs_in_node = ofs_in_node; |
1168 | return ret; | |
1169 | } | |
1170 | ||
b600965c HL |
1171 | int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) |
1172 | { | |
1173 | bool need_put = dn->inode_page ? false : true; | |
1174 | int err; | |
1175 | ||
4d57b86d | 1176 | err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE); |
b600965c HL |
1177 | if (err) |
1178 | return err; | |
a8865372 | 1179 | |
b600965c | 1180 | if (dn->data_blkaddr == NULL_ADDR) |
4d57b86d | 1181 | err = f2fs_reserve_new_block(dn); |
a8865372 | 1182 | if (err || need_put) |
b600965c HL |
1183 | f2fs_put_dnode(dn); |
1184 | return err; | |
1185 | } | |
1186 | ||
759af1c9 | 1187 | int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index) |
eb47b800 | 1188 | { |
94afd6d6 | 1189 | struct extent_info ei = {0, }; |
759af1c9 | 1190 | struct inode *inode = dn->inode; |
028a41e8 | 1191 | |
759af1c9 FL |
1192 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1193 | dn->data_blkaddr = ei.blk + index - ei.fofs; | |
1194 | return 0; | |
429511cd | 1195 | } |
028a41e8 | 1196 | |
759af1c9 | 1197 | return f2fs_reserve_block(dn, index); |
eb47b800 JK |
1198 | } |
1199 | ||
4d57b86d | 1200 | struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index, |
7649c873 | 1201 | blk_opf_t op_flags, bool for_write) |
eb47b800 | 1202 | { |
eb47b800 JK |
1203 | struct address_space *mapping = inode->i_mapping; |
1204 | struct dnode_of_data dn; | |
1205 | struct page *page; | |
94afd6d6 | 1206 | struct extent_info ei = {0, }; |
eb47b800 | 1207 | int err; |
4375a336 | 1208 | |
a56c7c6f | 1209 | page = f2fs_grab_cache_page(mapping, index, for_write); |
650495de JK |
1210 | if (!page) |
1211 | return ERR_PTR(-ENOMEM); | |
1212 | ||
cb3bc9ee CY |
1213 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { |
1214 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
93770ab7 CY |
1215 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr, |
1216 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 1217 | err = -EFSCORRUPTED; |
93770ab7 CY |
1218 | goto put_err; |
1219 | } | |
cb3bc9ee CY |
1220 | goto got_it; |
1221 | } | |
1222 | ||
eb47b800 | 1223 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
4d57b86d | 1224 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
86531d6b JK |
1225 | if (err) |
1226 | goto put_err; | |
eb47b800 JK |
1227 | f2fs_put_dnode(&dn); |
1228 | ||
6bacf52f | 1229 | if (unlikely(dn.data_blkaddr == NULL_ADDR)) { |
86531d6b JK |
1230 | err = -ENOENT; |
1231 | goto put_err; | |
650495de | 1232 | } |
93770ab7 CY |
1233 | if (dn.data_blkaddr != NEW_ADDR && |
1234 | !f2fs_is_valid_blkaddr(F2FS_I_SB(inode), | |
1235 | dn.data_blkaddr, | |
1236 | DATA_GENERIC_ENHANCE)) { | |
10f966bb | 1237 | err = -EFSCORRUPTED; |
93770ab7 CY |
1238 | goto put_err; |
1239 | } | |
cb3bc9ee | 1240 | got_it: |
43f3eae1 JK |
1241 | if (PageUptodate(page)) { |
1242 | unlock_page(page); | |
eb47b800 | 1243 | return page; |
43f3eae1 | 1244 | } |
eb47b800 | 1245 | |
d59ff4df JK |
1246 | /* |
1247 | * A new dentry page is allocated but not able to be written, since its | |
1248 | * new inode page couldn't be allocated due to -ENOSPC. | |
1249 | * In such the case, its blkaddr can be remained as NEW_ADDR. | |
4d57b86d CY |
1250 | * see, f2fs_add_link -> f2fs_get_new_data_page -> |
1251 | * f2fs_init_inode_metadata. | |
d59ff4df JK |
1252 | */ |
1253 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1254 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1255 | if (!PageUptodate(page)) |
1256 | SetPageUptodate(page); | |
43f3eae1 | 1257 | unlock_page(page); |
d59ff4df JK |
1258 | return page; |
1259 | } | |
eb47b800 | 1260 | |
b7973091 JY |
1261 | err = f2fs_submit_page_read(inode, page, dn.data_blkaddr, |
1262 | op_flags, for_write); | |
393ff91f | 1263 | if (err) |
86531d6b | 1264 | goto put_err; |
43f3eae1 | 1265 | return page; |
86531d6b JK |
1266 | |
1267 | put_err: | |
1268 | f2fs_put_page(page, 1); | |
1269 | return ERR_PTR(err); | |
43f3eae1 JK |
1270 | } |
1271 | ||
4d57b86d | 1272 | struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index) |
43f3eae1 JK |
1273 | { |
1274 | struct address_space *mapping = inode->i_mapping; | |
1275 | struct page *page; | |
1276 | ||
1277 | page = find_get_page(mapping, index); | |
1278 | if (page && PageUptodate(page)) | |
1279 | return page; | |
1280 | f2fs_put_page(page, 0); | |
1281 | ||
4d57b86d | 1282 | page = f2fs_get_read_data_page(inode, index, 0, false); |
43f3eae1 JK |
1283 | if (IS_ERR(page)) |
1284 | return page; | |
1285 | ||
1286 | if (PageUptodate(page)) | |
1287 | return page; | |
1288 | ||
1289 | wait_on_page_locked(page); | |
1290 | if (unlikely(!PageUptodate(page))) { | |
1291 | f2fs_put_page(page, 0); | |
1292 | return ERR_PTR(-EIO); | |
1293 | } | |
1294 | return page; | |
1295 | } | |
1296 | ||
1297 | /* | |
1298 | * If it tries to access a hole, return an error. | |
1299 | * Because, the callers, functions in dir.c and GC, should be able to know | |
1300 | * whether this page exists or not. | |
1301 | */ | |
4d57b86d | 1302 | struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, |
a56c7c6f | 1303 | bool for_write) |
43f3eae1 JK |
1304 | { |
1305 | struct address_space *mapping = inode->i_mapping; | |
1306 | struct page *page; | |
1307 | repeat: | |
4d57b86d | 1308 | page = f2fs_get_read_data_page(inode, index, 0, for_write); |
43f3eae1 JK |
1309 | if (IS_ERR(page)) |
1310 | return page; | |
393ff91f | 1311 | |
43f3eae1 | 1312 | /* wait for read completion */ |
393ff91f | 1313 | lock_page(page); |
6bacf52f | 1314 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
1315 | f2fs_put_page(page, 1); |
1316 | goto repeat; | |
eb47b800 | 1317 | } |
1563ac75 CY |
1318 | if (unlikely(!PageUptodate(page))) { |
1319 | f2fs_put_page(page, 1); | |
1320 | return ERR_PTR(-EIO); | |
1321 | } | |
eb47b800 JK |
1322 | return page; |
1323 | } | |
1324 | ||
0a8165d7 | 1325 | /* |
eb47b800 JK |
1326 | * Caller ensures that this data page is never allocated. |
1327 | * A new zero-filled data page is allocated in the page cache. | |
39936837 | 1328 | * |
4f4124d0 CY |
1329 | * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and |
1330 | * f2fs_unlock_op(). | |
470f00e9 CY |
1331 | * Note that, ipage is set only by make_empty_dir, and if any error occur, |
1332 | * ipage should be released by this function. | |
eb47b800 | 1333 | */ |
4d57b86d | 1334 | struct page *f2fs_get_new_data_page(struct inode *inode, |
a8865372 | 1335 | struct page *ipage, pgoff_t index, bool new_i_size) |
eb47b800 | 1336 | { |
eb47b800 JK |
1337 | struct address_space *mapping = inode->i_mapping; |
1338 | struct page *page; | |
1339 | struct dnode_of_data dn; | |
1340 | int err; | |
7612118a | 1341 | |
a56c7c6f | 1342 | page = f2fs_grab_cache_page(mapping, index, true); |
470f00e9 CY |
1343 | if (!page) { |
1344 | /* | |
1345 | * before exiting, we should make sure ipage will be released | |
1346 | * if any error occur. | |
1347 | */ | |
1348 | f2fs_put_page(ipage, 1); | |
01f28610 | 1349 | return ERR_PTR(-ENOMEM); |
470f00e9 | 1350 | } |
eb47b800 | 1351 | |
a8865372 | 1352 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
b600965c | 1353 | err = f2fs_reserve_block(&dn, index); |
01f28610 JK |
1354 | if (err) { |
1355 | f2fs_put_page(page, 1); | |
eb47b800 | 1356 | return ERR_PTR(err); |
a8865372 | 1357 | } |
01f28610 JK |
1358 | if (!ipage) |
1359 | f2fs_put_dnode(&dn); | |
eb47b800 JK |
1360 | |
1361 | if (PageUptodate(page)) | |
01f28610 | 1362 | goto got_it; |
eb47b800 JK |
1363 | |
1364 | if (dn.data_blkaddr == NEW_ADDR) { | |
09cbfeaf | 1365 | zero_user_segment(page, 0, PAGE_SIZE); |
237c0790 JK |
1366 | if (!PageUptodate(page)) |
1367 | SetPageUptodate(page); | |
eb47b800 | 1368 | } else { |
4375a336 | 1369 | f2fs_put_page(page, 1); |
a8865372 | 1370 | |
7612118a JK |
1371 | /* if ipage exists, blkaddr should be NEW_ADDR */ |
1372 | f2fs_bug_on(F2FS_I_SB(inode), ipage); | |
4d57b86d | 1373 | page = f2fs_get_lock_data_page(inode, index, true); |
4375a336 | 1374 | if (IS_ERR(page)) |
7612118a | 1375 | return page; |
eb47b800 | 1376 | } |
01f28610 | 1377 | got_it: |
9edcdabf | 1378 | if (new_i_size && i_size_read(inode) < |
ee6d182f | 1379 | ((loff_t)(index + 1) << PAGE_SHIFT)) |
fc9581c8 | 1380 | f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); |
eb47b800 JK |
1381 | return page; |
1382 | } | |
1383 | ||
d5097be5 | 1384 | static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) |
bfad7c2d | 1385 | { |
4081363f | 1386 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
bfad7c2d | 1387 | struct f2fs_summary sum; |
bfad7c2d | 1388 | struct node_info ni; |
6aa58d8a | 1389 | block_t old_blkaddr; |
46008c6d | 1390 | blkcnt_t count = 1; |
0abd675e | 1391 | int err; |
bfad7c2d | 1392 | |
91942321 | 1393 | if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) |
bfad7c2d | 1394 | return -EPERM; |
df6136ef | 1395 | |
a9419b63 | 1396 | err = f2fs_get_node_info(sbi, dn->nid, &ni, false); |
7735730d CY |
1397 | if (err) |
1398 | return err; | |
1399 | ||
a2ced1ce | 1400 | dn->data_blkaddr = f2fs_data_blkaddr(dn); |
f847c699 | 1401 | if (dn->data_blkaddr != NULL_ADDR) |
df6136ef CY |
1402 | goto alloc; |
1403 | ||
0abd675e CY |
1404 | if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count)))) |
1405 | return err; | |
bfad7c2d | 1406 | |
df6136ef | 1407 | alloc: |
bfad7c2d | 1408 | set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); |
6aa58d8a CY |
1409 | old_blkaddr = dn->data_blkaddr; |
1410 | f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr, | |
093749e2 | 1411 | &sum, seg_type, NULL); |
6ce19aff | 1412 | if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) { |
6aa58d8a CY |
1413 | invalidate_mapping_pages(META_MAPPING(sbi), |
1414 | old_blkaddr, old_blkaddr); | |
6ce19aff CY |
1415 | f2fs_invalidate_compress_page(sbi, old_blkaddr); |
1416 | } | |
86f35dc3 | 1417 | f2fs_update_data_blkaddr(dn, dn->data_blkaddr); |
bfad7c2d JK |
1418 | return 0; |
1419 | } | |
1420 | ||
0ef81833 | 1421 | void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock) |
59c9081b YH |
1422 | { |
1423 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { | |
1424 | if (lock) | |
e4544b63 | 1425 | f2fs_down_read(&sbi->node_change); |
59c9081b | 1426 | else |
e4544b63 | 1427 | f2fs_up_read(&sbi->node_change); |
59c9081b YH |
1428 | } else { |
1429 | if (lock) | |
1430 | f2fs_lock_op(sbi); | |
1431 | else | |
1432 | f2fs_unlock_op(sbi); | |
1433 | } | |
1434 | } | |
1435 | ||
0a8165d7 | 1436 | /* |
7a88ddb5 CY |
1437 | * f2fs_map_blocks() tries to find or build mapping relationship which |
1438 | * maps continuous logical blocks to physical blocks, and return such | |
1439 | * info via f2fs_map_blocks structure. | |
eb47b800 | 1440 | */ |
d323d005 | 1441 | int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, |
e2b4e2bc | 1442 | int create, int flag) |
eb47b800 | 1443 | { |
003a3e1d | 1444 | unsigned int maxblocks = map->m_len; |
eb47b800 | 1445 | struct dnode_of_data dn; |
f9811703 | 1446 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
f9d6d059 | 1447 | int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE; |
46008c6d | 1448 | pgoff_t pgofs, end_offset, end; |
bfad7c2d | 1449 | int err = 0, ofs = 1; |
46008c6d CY |
1450 | unsigned int ofs_in_node, last_ofs_in_node; |
1451 | blkcnt_t prealloc; | |
94afd6d6 | 1452 | struct extent_info ei = {0, }; |
7df3a431 | 1453 | block_t blkaddr; |
c4020b2d | 1454 | unsigned int start_pgofs; |
71f2c820 | 1455 | int bidx = 0; |
eb47b800 | 1456 | |
dfd02e4d CY |
1457 | if (!maxblocks) |
1458 | return 0; | |
1459 | ||
71f2c820 CY |
1460 | map->m_bdev = inode->i_sb->s_bdev; |
1461 | map->m_multidev_dio = | |
1462 | f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag); | |
1463 | ||
003a3e1d JK |
1464 | map->m_len = 0; |
1465 | map->m_flags = 0; | |
1466 | ||
1467 | /* it only supports block size == page size */ | |
1468 | pgofs = (pgoff_t)map->m_lblk; | |
46008c6d | 1469 | end = pgofs + maxblocks; |
eb47b800 | 1470 | |
24b84912 | 1471 | if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) { |
b0332a0f | 1472 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f4f0b677 JZ |
1473 | map->m_may_create) |
1474 | goto next_dnode; | |
1475 | ||
003a3e1d JK |
1476 | map->m_pblk = ei.blk + pgofs - ei.fofs; |
1477 | map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs); | |
1478 | map->m_flags = F2FS_MAP_MAPPED; | |
c4020b2d CY |
1479 | if (map->m_next_extent) |
1480 | *map->m_next_extent = pgofs + map->m_len; | |
1e78e8bd ST |
1481 | |
1482 | /* for hardware encryption, but to avoid potential issue in future */ | |
1483 | if (flag == F2FS_GET_BLOCK_DIO) | |
1484 | f2fs_wait_on_block_writeback_range(inode, | |
1485 | map->m_pblk, map->m_len); | |
71f2c820 CY |
1486 | |
1487 | if (map->m_multidev_dio) { | |
1488 | block_t blk_addr = map->m_pblk; | |
1489 | ||
1490 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1491 | ||
1492 | map->m_bdev = FDEV(bidx).bdev; | |
1493 | map->m_pblk -= FDEV(bidx).start_blk; | |
1494 | map->m_len = min(map->m_len, | |
1495 | FDEV(bidx).end_blk + 1 - map->m_pblk); | |
1496 | ||
1497 | if (map->m_may_create) | |
1498 | f2fs_update_device_state(sbi, inode->i_ino, | |
1499 | blk_addr, map->m_len); | |
1500 | } | |
bfad7c2d | 1501 | goto out; |
a2e7d1bf | 1502 | } |
bfad7c2d | 1503 | |
4fe71e88 | 1504 | next_dnode: |
f9d6d059 | 1505 | if (map->m_may_create) |
0ef81833 | 1506 | f2fs_do_map_lock(sbi, flag, true); |
eb47b800 JK |
1507 | |
1508 | /* When reading holes, we need its node page */ | |
1509 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
4d57b86d | 1510 | err = f2fs_get_dnode_of_data(&dn, pgofs, mode); |
1ec79083 | 1511 | if (err) { |
43473f96 CY |
1512 | if (flag == F2FS_GET_BLOCK_BMAP) |
1513 | map->m_pblk = 0; | |
adf9ea89 | 1514 | |
da85985c | 1515 | if (err == -ENOENT) { |
adf9ea89 CY |
1516 | /* |
1517 | * There is one exceptional case that read_node_page() | |
1518 | * may return -ENOENT due to filesystem has been | |
1519 | * shutdown or cp_error, so force to convert error | |
1520 | * number to EIO for such case. | |
1521 | */ | |
1522 | if (map->m_may_create && | |
1523 | (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || | |
1524 | f2fs_cp_error(sbi))) { | |
1525 | err = -EIO; | |
1526 | goto unlock_out; | |
1527 | } | |
1528 | ||
bfad7c2d | 1529 | err = 0; |
da85985c CY |
1530 | if (map->m_next_pgofs) |
1531 | *map->m_next_pgofs = | |
4d57b86d | 1532 | f2fs_get_next_page_offset(&dn, pgofs); |
c4020b2d CY |
1533 | if (map->m_next_extent) |
1534 | *map->m_next_extent = | |
4d57b86d | 1535 | f2fs_get_next_page_offset(&dn, pgofs); |
da85985c | 1536 | } |
bfad7c2d | 1537 | goto unlock_out; |
848753aa | 1538 | } |
973163fc | 1539 | |
c4020b2d | 1540 | start_pgofs = pgofs; |
46008c6d | 1541 | prealloc = 0; |
230436b3 | 1542 | last_ofs_in_node = ofs_in_node = dn.ofs_in_node; |
81ca7350 | 1543 | end_offset = ADDRS_PER_PAGE(dn.node_page, inode); |
4fe71e88 CY |
1544 | |
1545 | next_block: | |
a2ced1ce | 1546 | blkaddr = f2fs_data_blkaddr(&dn); |
4fe71e88 | 1547 | |
c9b60788 | 1548 | if (__is_valid_data_blkaddr(blkaddr) && |
93770ab7 | 1549 | !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) { |
10f966bb | 1550 | err = -EFSCORRUPTED; |
c9b60788 CY |
1551 | goto sync_out; |
1552 | } | |
1553 | ||
93770ab7 | 1554 | if (__is_valid_data_blkaddr(blkaddr)) { |
f847c699 | 1555 | /* use out-place-update for driect IO under LFS mode */ |
b0332a0f | 1556 | if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO && |
f9d6d059 | 1557 | map->m_may_create) { |
f847c699 | 1558 | err = __allocate_data_block(&dn, map->m_seg_type); |
05e36006 CY |
1559 | if (err) |
1560 | goto sync_out; | |
1561 | blkaddr = dn.data_blkaddr; | |
1562 | set_inode_flag(inode, FI_APPEND_WRITE); | |
f847c699 CY |
1563 | } |
1564 | } else { | |
973163fc | 1565 | if (create) { |
f9811703 CY |
1566 | if (unlikely(f2fs_cp_error(sbi))) { |
1567 | err = -EIO; | |
4fe71e88 | 1568 | goto sync_out; |
f9811703 | 1569 | } |
24b84912 | 1570 | if (flag == F2FS_GET_BLOCK_PRE_AIO) { |
46008c6d CY |
1571 | if (blkaddr == NULL_ADDR) { |
1572 | prealloc++; | |
1573 | last_ofs_in_node = dn.ofs_in_node; | |
1574 | } | |
24b84912 | 1575 | } else { |
0a4daae5 JK |
1576 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && |
1577 | flag != F2FS_GET_BLOCK_DIO); | |
d5097be5 HL |
1578 | err = __allocate_data_block(&dn, |
1579 | map->m_seg_type); | |
d4dd19ec JK |
1580 | if (!err) { |
1581 | if (flag == F2FS_GET_BLOCK_PRE_DIO) | |
1582 | file_need_truncate(inode); | |
91942321 | 1583 | set_inode_flag(inode, FI_APPEND_WRITE); |
d4dd19ec | 1584 | } |
24b84912 | 1585 | } |
973163fc | 1586 | if (err) |
4fe71e88 | 1587 | goto sync_out; |
3f2be043 | 1588 | map->m_flags |= F2FS_MAP_NEW; |
4fe71e88 | 1589 | blkaddr = dn.data_blkaddr; |
973163fc | 1590 | } else { |
bbe1da7e CY |
1591 | if (f2fs_compressed_file(inode) && |
1592 | f2fs_sanity_check_cluster(&dn) && | |
1593 | (flag != F2FS_GET_BLOCK_FIEMAP || | |
1594 | IS_ENABLED(CONFIG_F2FS_CHECK_FS))) { | |
1595 | err = -EFSCORRUPTED; | |
1596 | goto sync_out; | |
1597 | } | |
43473f96 CY |
1598 | if (flag == F2FS_GET_BLOCK_BMAP) { |
1599 | map->m_pblk = 0; | |
1600 | goto sync_out; | |
1601 | } | |
c4020b2d CY |
1602 | if (flag == F2FS_GET_BLOCK_PRECACHE) |
1603 | goto sync_out; | |
da85985c CY |
1604 | if (flag == F2FS_GET_BLOCK_FIEMAP && |
1605 | blkaddr == NULL_ADDR) { | |
1606 | if (map->m_next_pgofs) | |
1607 | *map->m_next_pgofs = pgofs + 1; | |
4c2ac6a8 | 1608 | goto sync_out; |
da85985c | 1609 | } |
f3d98e74 CY |
1610 | if (flag != F2FS_GET_BLOCK_FIEMAP) { |
1611 | /* for defragment case */ | |
1612 | if (map->m_next_pgofs) | |
1613 | *map->m_next_pgofs = pgofs + 1; | |
4fe71e88 | 1614 | goto sync_out; |
f3d98e74 | 1615 | } |
e2b4e2bc | 1616 | } |
e2b4e2bc | 1617 | } |
eb47b800 | 1618 | |
46008c6d CY |
1619 | if (flag == F2FS_GET_BLOCK_PRE_AIO) |
1620 | goto skip; | |
1621 | ||
71f2c820 CY |
1622 | if (map->m_multidev_dio) |
1623 | bidx = f2fs_target_device_index(sbi, blkaddr); | |
1624 | ||
4fe71e88 CY |
1625 | if (map->m_len == 0) { |
1626 | /* preallocated unwritten block should be mapped for fiemap. */ | |
1627 | if (blkaddr == NEW_ADDR) | |
1628 | map->m_flags |= F2FS_MAP_UNWRITTEN; | |
1629 | map->m_flags |= F2FS_MAP_MAPPED; | |
1630 | ||
1631 | map->m_pblk = blkaddr; | |
1632 | map->m_len = 1; | |
71f2c820 CY |
1633 | |
1634 | if (map->m_multidev_dio) | |
1635 | map->m_bdev = FDEV(bidx).bdev; | |
4fe71e88 CY |
1636 | } else if ((map->m_pblk != NEW_ADDR && |
1637 | blkaddr == (map->m_pblk + ofs)) || | |
b439b103 | 1638 | (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) || |
46008c6d | 1639 | flag == F2FS_GET_BLOCK_PRE_DIO) { |
71f2c820 CY |
1640 | if (map->m_multidev_dio && map->m_bdev != FDEV(bidx).bdev) |
1641 | goto sync_out; | |
4fe71e88 CY |
1642 | ofs++; |
1643 | map->m_len++; | |
1644 | } else { | |
1645 | goto sync_out; | |
1646 | } | |
bfad7c2d | 1647 | |
46008c6d | 1648 | skip: |
bfad7c2d JK |
1649 | dn.ofs_in_node++; |
1650 | pgofs++; | |
1651 | ||
46008c6d CY |
1652 | /* preallocate blocks in batch for one dnode page */ |
1653 | if (flag == F2FS_GET_BLOCK_PRE_AIO && | |
1654 | (pgofs == end || dn.ofs_in_node == end_offset)) { | |
7df3a431 | 1655 | |
46008c6d | 1656 | dn.ofs_in_node = ofs_in_node; |
4d57b86d | 1657 | err = f2fs_reserve_new_blocks(&dn, prealloc); |
46008c6d CY |
1658 | if (err) |
1659 | goto sync_out; | |
bfad7c2d | 1660 | |
46008c6d CY |
1661 | map->m_len += dn.ofs_in_node - ofs_in_node; |
1662 | if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) { | |
1663 | err = -ENOSPC; | |
1664 | goto sync_out; | |
3104af35 | 1665 | } |
46008c6d CY |
1666 | dn.ofs_in_node = end_offset; |
1667 | } | |
1668 | ||
1669 | if (pgofs >= end) | |
1670 | goto sync_out; | |
1671 | else if (dn.ofs_in_node < end_offset) | |
1672 | goto next_block; | |
1673 | ||
c4020b2d CY |
1674 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1675 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1676 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1677 | ||
1678 | f2fs_update_extent_cache_range(&dn, | |
1679 | start_pgofs, map->m_pblk + ofs, | |
1680 | map->m_len - ofs); | |
1681 | } | |
1682 | } | |
1683 | ||
46008c6d CY |
1684 | f2fs_put_dnode(&dn); |
1685 | ||
f9d6d059 | 1686 | if (map->m_may_create) { |
0ef81833 | 1687 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1688 | f2fs_balance_fs(sbi, dn.node_changed); |
eb47b800 | 1689 | } |
46008c6d | 1690 | goto next_dnode; |
7df3a431 | 1691 | |
bfad7c2d | 1692 | sync_out: |
1e78e8bd | 1693 | |
71f2c820 CY |
1694 | if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) { |
1695 | /* | |
1696 | * for hardware encryption, but to avoid potential issue | |
1697 | * in future | |
1698 | */ | |
1e78e8bd ST |
1699 | f2fs_wait_on_block_writeback_range(inode, |
1700 | map->m_pblk, map->m_len); | |
1701 | ||
71f2c820 CY |
1702 | if (map->m_multidev_dio) { |
1703 | block_t blk_addr = map->m_pblk; | |
1704 | ||
1705 | bidx = f2fs_target_device_index(sbi, map->m_pblk); | |
1706 | ||
1707 | map->m_bdev = FDEV(bidx).bdev; | |
1708 | map->m_pblk -= FDEV(bidx).start_blk; | |
1709 | ||
1710 | if (map->m_may_create) | |
1711 | f2fs_update_device_state(sbi, inode->i_ino, | |
1712 | blk_addr, map->m_len); | |
1713 | ||
1714 | f2fs_bug_on(sbi, blk_addr + map->m_len > | |
1715 | FDEV(bidx).end_blk + 1); | |
1716 | } | |
1717 | } | |
1718 | ||
c4020b2d CY |
1719 | if (flag == F2FS_GET_BLOCK_PRECACHE) { |
1720 | if (map->m_flags & F2FS_MAP_MAPPED) { | |
1721 | unsigned int ofs = start_pgofs - map->m_lblk; | |
1722 | ||
1723 | f2fs_update_extent_cache_range(&dn, | |
1724 | start_pgofs, map->m_pblk + ofs, | |
1725 | map->m_len - ofs); | |
1726 | } | |
1727 | if (map->m_next_extent) | |
1728 | *map->m_next_extent = pgofs + 1; | |
1729 | } | |
eb47b800 | 1730 | f2fs_put_dnode(&dn); |
bfad7c2d | 1731 | unlock_out: |
f9d6d059 | 1732 | if (map->m_may_create) { |
0ef81833 | 1733 | f2fs_do_map_lock(sbi, flag, false); |
6f2d8ed6 | 1734 | f2fs_balance_fs(sbi, dn.node_changed); |
2a340760 | 1735 | } |
bfad7c2d | 1736 | out: |
71f2c820 | 1737 | trace_f2fs_map_blocks(inode, map, create, flag, err); |
bfad7c2d | 1738 | return err; |
eb47b800 JK |
1739 | } |
1740 | ||
b91050a8 HL |
1741 | bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len) |
1742 | { | |
1743 | struct f2fs_map_blocks map; | |
1744 | block_t last_lblk; | |
1745 | int err; | |
1746 | ||
1747 | if (pos + len > i_size_read(inode)) | |
1748 | return false; | |
1749 | ||
1750 | map.m_lblk = F2FS_BYTES_TO_BLK(pos); | |
1751 | map.m_next_pgofs = NULL; | |
1752 | map.m_next_extent = NULL; | |
1753 | map.m_seg_type = NO_CHECK_TYPE; | |
f4f0b677 | 1754 | map.m_may_create = false; |
b91050a8 HL |
1755 | last_lblk = F2FS_BLK_ALIGN(pos + len); |
1756 | ||
1757 | while (map.m_lblk < last_lblk) { | |
1758 | map.m_len = last_lblk - map.m_lblk; | |
1759 | err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT); | |
1760 | if (err || map.m_len == 0) | |
1761 | return false; | |
1762 | map.m_lblk += map.m_len; | |
1763 | } | |
1764 | return true; | |
1765 | } | |
1766 | ||
43b9d4b4 JK |
1767 | static inline u64 bytes_to_blks(struct inode *inode, u64 bytes) |
1768 | { | |
1769 | return (bytes >> inode->i_blkbits); | |
1770 | } | |
1771 | ||
1772 | static inline u64 blks_to_bytes(struct inode *inode, u64 blks) | |
1773 | { | |
1774 | return (blks << inode->i_blkbits); | |
1775 | } | |
1776 | ||
442a9dbd CY |
1777 | static int f2fs_xattr_fiemap(struct inode *inode, |
1778 | struct fiemap_extent_info *fieinfo) | |
1779 | { | |
1780 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
1781 | struct page *page; | |
1782 | struct node_info ni; | |
1783 | __u64 phys = 0, len; | |
1784 | __u32 flags; | |
1785 | nid_t xnid = F2FS_I(inode)->i_xattr_nid; | |
1786 | int err = 0; | |
1787 | ||
1788 | if (f2fs_has_inline_xattr(inode)) { | |
1789 | int offset; | |
1790 | ||
1791 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), | |
1792 | inode->i_ino, false); | |
1793 | if (!page) | |
1794 | return -ENOMEM; | |
1795 | ||
a9419b63 | 1796 | err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false); |
7735730d CY |
1797 | if (err) { |
1798 | f2fs_put_page(page, 1); | |
1799 | return err; | |
1800 | } | |
442a9dbd | 1801 | |
6cbfcab5 | 1802 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1803 | offset = offsetof(struct f2fs_inode, i_addr) + |
1804 | sizeof(__le32) * (DEF_ADDRS_PER_INODE - | |
b323fd28 | 1805 | get_inline_xattr_addrs(inode)); |
442a9dbd CY |
1806 | |
1807 | phys += offset; | |
1808 | len = inline_xattr_size(inode); | |
1809 | ||
1810 | f2fs_put_page(page, 1); | |
1811 | ||
1812 | flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED; | |
1813 | ||
1814 | if (!xnid) | |
1815 | flags |= FIEMAP_EXTENT_LAST; | |
1816 | ||
1817 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); | |
dd5a09bd | 1818 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
442a9dbd CY |
1819 | if (err || err == 1) |
1820 | return err; | |
1821 | } | |
1822 | ||
1823 | if (xnid) { | |
1824 | page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false); | |
1825 | if (!page) | |
1826 | return -ENOMEM; | |
1827 | ||
a9419b63 | 1828 | err = f2fs_get_node_info(sbi, xnid, &ni, false); |
7735730d CY |
1829 | if (err) { |
1830 | f2fs_put_page(page, 1); | |
1831 | return err; | |
1832 | } | |
442a9dbd | 1833 | |
6cbfcab5 | 1834 | phys = blks_to_bytes(inode, ni.blk_addr); |
442a9dbd CY |
1835 | len = inode->i_sb->s_blocksize; |
1836 | ||
1837 | f2fs_put_page(page, 1); | |
1838 | ||
1839 | flags = FIEMAP_EXTENT_LAST; | |
1840 | } | |
1841 | ||
dd5a09bd | 1842 | if (phys) { |
442a9dbd | 1843 | err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags); |
dd5a09bd CY |
1844 | trace_f2fs_fiemap(inode, 0, phys, len, flags, err); |
1845 | } | |
442a9dbd CY |
1846 | |
1847 | return (err < 0 ? err : 0); | |
1848 | } | |
1849 | ||
bf38fbad CY |
1850 | static loff_t max_inode_blocks(struct inode *inode) |
1851 | { | |
1852 | loff_t result = ADDRS_PER_INODE(inode); | |
1853 | loff_t leaf_count = ADDRS_PER_BLOCK(inode); | |
1854 | ||
1855 | /* two direct node blocks */ | |
1856 | result += (leaf_count * 2); | |
1857 | ||
1858 | /* two indirect node blocks */ | |
1859 | leaf_count *= NIDS_PER_BLOCK; | |
1860 | result += (leaf_count * 2); | |
1861 | ||
1862 | /* one double indirect node block */ | |
1863 | leaf_count *= NIDS_PER_BLOCK; | |
1864 | result += leaf_count; | |
1865 | ||
1866 | return result; | |
1867 | } | |
1868 | ||
9ab70134 JK |
1869 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, |
1870 | u64 start, u64 len) | |
1871 | { | |
b876f4c9 | 1872 | struct f2fs_map_blocks map; |
7f63eb77 | 1873 | sector_t start_blk, last_blk; |
da85985c | 1874 | pgoff_t next_pgofs; |
7f63eb77 JK |
1875 | u64 logical = 0, phys = 0, size = 0; |
1876 | u32 flags = 0; | |
7f63eb77 | 1877 | int ret = 0; |
093f0bac | 1878 | bool compr_cluster = false, compr_appended; |
bf38fbad | 1879 | unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; |
093f0bac | 1880 | unsigned int count_in_cluster = 0; |
0bb2045c | 1881 | loff_t maxbytes; |
7f63eb77 | 1882 | |
c4020b2d CY |
1883 | if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { |
1884 | ret = f2fs_precache_extents(inode); | |
1885 | if (ret) | |
1886 | return ret; | |
1887 | } | |
1888 | ||
45dd052e | 1889 | ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR); |
7f63eb77 JK |
1890 | if (ret) |
1891 | return ret; | |
1892 | ||
f1b43d4c CY |
1893 | inode_lock(inode); |
1894 | ||
0bb2045c CX |
1895 | maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS; |
1896 | if (start > maxbytes) { | |
1897 | ret = -EFBIG; | |
1898 | goto out; | |
1899 | } | |
1900 | ||
1901 | if (len > maxbytes || (maxbytes - len) < start) | |
1902 | len = maxbytes - start; | |
1903 | ||
442a9dbd CY |
1904 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { |
1905 | ret = f2fs_xattr_fiemap(inode, fieinfo); | |
1906 | goto out; | |
1907 | } | |
1908 | ||
7975f349 | 1909 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
67f8cf3c JK |
1910 | ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); |
1911 | if (ret != -EAGAIN) | |
f1b43d4c | 1912 | goto out; |
67f8cf3c JK |
1913 | } |
1914 | ||
6cbfcab5 JK |
1915 | if (bytes_to_blks(inode, len) == 0) |
1916 | len = blks_to_bytes(inode, 1); | |
7f63eb77 | 1917 | |
6cbfcab5 JK |
1918 | start_blk = bytes_to_blks(inode, start); |
1919 | last_blk = bytes_to_blks(inode, start + len - 1); | |
9a950d52 | 1920 | |
7f63eb77 | 1921 | next: |
b876f4c9 JK |
1922 | memset(&map, 0, sizeof(map)); |
1923 | map.m_lblk = start_blk; | |
1924 | map.m_len = bytes_to_blks(inode, len); | |
1925 | map.m_next_pgofs = &next_pgofs; | |
1926 | map.m_seg_type = NO_CHECK_TYPE; | |
7f63eb77 | 1927 | |
093f0bac DJ |
1928 | if (compr_cluster) { |
1929 | map.m_lblk += 1; | |
1930 | map.m_len = cluster_size - count_in_cluster; | |
1931 | } | |
bf38fbad | 1932 | |
b876f4c9 | 1933 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
7f63eb77 JK |
1934 | if (ret) |
1935 | goto out; | |
1936 | ||
1937 | /* HOLE */ | |
093f0bac | 1938 | if (!compr_cluster && !(map.m_flags & F2FS_MAP_FLAGS)) { |
da85985c | 1939 | start_blk = next_pgofs; |
58736fa6 | 1940 | |
6cbfcab5 | 1941 | if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode, |
bf38fbad | 1942 | max_inode_blocks(inode))) |
9a950d52 | 1943 | goto prep_next; |
58736fa6 | 1944 | |
9a950d52 FL |
1945 | flags |= FIEMAP_EXTENT_LAST; |
1946 | } | |
7f63eb77 | 1947 | |
093f0bac DJ |
1948 | compr_appended = false; |
1949 | /* In a case of compressed cluster, append this to the last extent */ | |
1950 | if (compr_cluster && ((map.m_flags & F2FS_MAP_UNWRITTEN) || | |
1951 | !(map.m_flags & F2FS_MAP_FLAGS))) { | |
1952 | compr_appended = true; | |
1953 | goto skip_fill; | |
1954 | } | |
1955 | ||
da5af127 | 1956 | if (size) { |
0953fe86 | 1957 | flags |= FIEMAP_EXTENT_MERGED; |
62230e0d | 1958 | if (IS_ENCRYPTED(inode)) |
da5af127 CY |
1959 | flags |= FIEMAP_EXTENT_DATA_ENCRYPTED; |
1960 | ||
9a950d52 FL |
1961 | ret = fiemap_fill_next_extent(fieinfo, logical, |
1962 | phys, size, flags); | |
dd5a09bd | 1963 | trace_f2fs_fiemap(inode, logical, phys, size, flags, ret); |
bf38fbad CY |
1964 | if (ret) |
1965 | goto out; | |
1966 | size = 0; | |
da5af127 | 1967 | } |
7f63eb77 | 1968 | |
bf38fbad | 1969 | if (start_blk > last_blk) |
9a950d52 | 1970 | goto out; |
7f63eb77 | 1971 | |
093f0bac | 1972 | skip_fill: |
b876f4c9 | 1973 | if (map.m_pblk == COMPRESS_ADDR) { |
bf38fbad | 1974 | compr_cluster = true; |
093f0bac DJ |
1975 | count_in_cluster = 1; |
1976 | } else if (compr_appended) { | |
1977 | unsigned int appended_blks = cluster_size - | |
1978 | count_in_cluster + 1; | |
1979 | size += blks_to_bytes(inode, appended_blks); | |
1980 | start_blk += appended_blks; | |
1981 | compr_cluster = false; | |
1982 | } else { | |
1983 | logical = blks_to_bytes(inode, start_blk); | |
1984 | phys = __is_valid_data_blkaddr(map.m_pblk) ? | |
1985 | blks_to_bytes(inode, map.m_pblk) : 0; | |
1986 | size = blks_to_bytes(inode, map.m_len); | |
1987 | flags = 0; | |
1988 | ||
1989 | if (compr_cluster) { | |
1990 | flags = FIEMAP_EXTENT_ENCODED; | |
1991 | count_in_cluster += map.m_len; | |
1992 | if (count_in_cluster == cluster_size) { | |
1993 | compr_cluster = false; | |
1994 | size += blks_to_bytes(inode, 1); | |
1995 | } | |
1996 | } else if (map.m_flags & F2FS_MAP_UNWRITTEN) { | |
1997 | flags = FIEMAP_EXTENT_UNWRITTEN; | |
1998 | } | |
7f63eb77 | 1999 | |
093f0bac DJ |
2000 | start_blk += bytes_to_blks(inode, size); |
2001 | } | |
7f63eb77 | 2002 | |
9a950d52 | 2003 | prep_next: |
7f63eb77 JK |
2004 | cond_resched(); |
2005 | if (fatal_signal_pending(current)) | |
2006 | ret = -EINTR; | |
2007 | else | |
2008 | goto next; | |
2009 | out: | |
2010 | if (ret == 1) | |
2011 | ret = 0; | |
2012 | ||
5955102c | 2013 | inode_unlock(inode); |
7f63eb77 | 2014 | return ret; |
9ab70134 JK |
2015 | } |
2016 | ||
95ae251f EB |
2017 | static inline loff_t f2fs_readpage_limit(struct inode *inode) |
2018 | { | |
2019 | if (IS_ENABLED(CONFIG_FS_VERITY) && | |
2020 | (IS_VERITY(inode) || f2fs_verity_in_progress(inode))) | |
2021 | return inode->i_sb->s_maxbytes; | |
2022 | ||
2023 | return i_size_read(inode); | |
2024 | } | |
2025 | ||
2df0ab04 CY |
2026 | static int f2fs_read_single_page(struct inode *inode, struct page *page, |
2027 | unsigned nr_pages, | |
2028 | struct f2fs_map_blocks *map, | |
2029 | struct bio **bio_ret, | |
2030 | sector_t *last_block_in_bio, | |
2031 | bool is_readahead) | |
2032 | { | |
2033 | struct bio *bio = *bio_ret; | |
43b9d4b4 | 2034 | const unsigned blocksize = blks_to_bytes(inode, 1); |
2df0ab04 CY |
2035 | sector_t block_in_file; |
2036 | sector_t last_block; | |
2037 | sector_t last_block_in_file; | |
2038 | sector_t block_nr; | |
2039 | int ret = 0; | |
2040 | ||
4969c06a | 2041 | block_in_file = (sector_t)page_index(page); |
2df0ab04 | 2042 | last_block = block_in_file + nr_pages; |
43b9d4b4 JK |
2043 | last_block_in_file = bytes_to_blks(inode, |
2044 | f2fs_readpage_limit(inode) + blocksize - 1); | |
2df0ab04 CY |
2045 | if (last_block > last_block_in_file) |
2046 | last_block = last_block_in_file; | |
2047 | ||
2048 | /* just zeroing out page which is beyond EOF */ | |
2049 | if (block_in_file >= last_block) | |
2050 | goto zero_out; | |
2051 | /* | |
2052 | * Map blocks using the previous result first. | |
2053 | */ | |
2054 | if ((map->m_flags & F2FS_MAP_MAPPED) && | |
2055 | block_in_file > map->m_lblk && | |
2056 | block_in_file < (map->m_lblk + map->m_len)) | |
2057 | goto got_it; | |
2058 | ||
2059 | /* | |
2060 | * Then do more f2fs_map_blocks() calls until we are | |
2061 | * done with this page. | |
2062 | */ | |
2063 | map->m_lblk = block_in_file; | |
2064 | map->m_len = last_block - block_in_file; | |
2065 | ||
2066 | ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT); | |
2067 | if (ret) | |
2068 | goto out; | |
2069 | got_it: | |
2070 | if ((map->m_flags & F2FS_MAP_MAPPED)) { | |
2071 | block_nr = map->m_pblk + block_in_file - map->m_lblk; | |
2072 | SetPageMappedToDisk(page); | |
2073 | ||
2df0ab04 | 2074 | if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr, |
93770ab7 | 2075 | DATA_GENERIC_ENHANCE_READ)) { |
10f966bb | 2076 | ret = -EFSCORRUPTED; |
2df0ab04 CY |
2077 | goto out; |
2078 | } | |
2079 | } else { | |
2080 | zero_out: | |
2081 | zero_user_segment(page, 0, PAGE_SIZE); | |
95ae251f EB |
2082 | if (f2fs_need_verity(inode, page->index) && |
2083 | !fsverity_verify_page(page)) { | |
2084 | ret = -EIO; | |
2085 | goto out; | |
2086 | } | |
2df0ab04 CY |
2087 | if (!PageUptodate(page)) |
2088 | SetPageUptodate(page); | |
2089 | unlock_page(page); | |
2090 | goto out; | |
2091 | } | |
2092 | ||
2093 | /* | |
2094 | * This page will go to BIO. Do we need to send this | |
2095 | * BIO off first? | |
2096 | */ | |
27aacd28 ST |
2097 | if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio, |
2098 | *last_block_in_bio, block_nr) || | |
2099 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
2df0ab04 CY |
2100 | submit_and_realloc: |
2101 | __submit_bio(F2FS_I_SB(inode), bio, DATA); | |
2102 | bio = NULL; | |
2103 | } | |
2104 | if (bio == NULL) { | |
2105 | bio = f2fs_grab_read_bio(inode, block_nr, nr_pages, | |
0683728a | 2106 | is_readahead ? REQ_RAHEAD : 0, page->index, |
7f59b277 | 2107 | false); |
2df0ab04 CY |
2108 | if (IS_ERR(bio)) { |
2109 | ret = PTR_ERR(bio); | |
2110 | bio = NULL; | |
2111 | goto out; | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | /* | |
2116 | * If the page is under writeback, we need to wait for | |
2117 | * its completion to see the correct decrypted data. | |
2118 | */ | |
2119 | f2fs_wait_on_block_writeback(inode, block_nr); | |
2120 | ||
2121 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) | |
2122 | goto submit_and_realloc; | |
2123 | ||
2124 | inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA); | |
8b83ac81 | 2125 | f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE); |
2df0ab04 CY |
2126 | ClearPageError(page); |
2127 | *last_block_in_bio = block_nr; | |
2128 | goto out; | |
2df0ab04 CY |
2129 | out: |
2130 | *bio_ret = bio; | |
2131 | return ret; | |
2132 | } | |
2133 | ||
4c8ff709 CY |
2134 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2135 | int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, | |
2136 | unsigned nr_pages, sector_t *last_block_in_bio, | |
0683728a | 2137 | bool is_readahead, bool for_write) |
4c8ff709 CY |
2138 | { |
2139 | struct dnode_of_data dn; | |
2140 | struct inode *inode = cc->inode; | |
2141 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2142 | struct bio *bio = *bio_ret; | |
2143 | unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size; | |
2144 | sector_t last_block_in_file; | |
43b9d4b4 | 2145 | const unsigned blocksize = blks_to_bytes(inode, 1); |
4c8ff709 | 2146 | struct decompress_io_ctx *dic = NULL; |
94afd6d6 CY |
2147 | struct extent_info ei = {0, }; |
2148 | bool from_dnode = true; | |
4c8ff709 CY |
2149 | int i; |
2150 | int ret = 0; | |
2151 | ||
2152 | f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc)); | |
2153 | ||
43b9d4b4 JK |
2154 | last_block_in_file = bytes_to_blks(inode, |
2155 | f2fs_readpage_limit(inode) + blocksize - 1); | |
4c8ff709 CY |
2156 | |
2157 | /* get rid of pages beyond EOF */ | |
2158 | for (i = 0; i < cc->cluster_size; i++) { | |
2159 | struct page *page = cc->rpages[i]; | |
2160 | ||
2161 | if (!page) | |
2162 | continue; | |
2163 | if ((sector_t)page->index >= last_block_in_file) { | |
2164 | zero_user_segment(page, 0, PAGE_SIZE); | |
2165 | if (!PageUptodate(page)) | |
2166 | SetPageUptodate(page); | |
2167 | } else if (!PageUptodate(page)) { | |
2168 | continue; | |
2169 | } | |
2170 | unlock_page(page); | |
9605f75c JK |
2171 | if (for_write) |
2172 | put_page(page); | |
4c8ff709 CY |
2173 | cc->rpages[i] = NULL; |
2174 | cc->nr_rpages--; | |
2175 | } | |
2176 | ||
2177 | /* we are done since all pages are beyond EOF */ | |
2178 | if (f2fs_cluster_is_empty(cc)) | |
2179 | goto out; | |
2180 | ||
94afd6d6 CY |
2181 | if (f2fs_lookup_extent_cache(inode, start_idx, &ei)) |
2182 | from_dnode = false; | |
2183 | ||
2184 | if (!from_dnode) | |
2185 | goto skip_reading_dnode; | |
2186 | ||
4c8ff709 CY |
2187 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
2188 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
2189 | if (ret) | |
2190 | goto out; | |
2191 | ||
a86d27dd | 2192 | f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); |
4c8ff709 | 2193 | |
94afd6d6 | 2194 | skip_reading_dnode: |
4c8ff709 CY |
2195 | for (i = 1; i < cc->cluster_size; i++) { |
2196 | block_t blkaddr; | |
2197 | ||
94afd6d6 CY |
2198 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2199 | dn.ofs_in_node + i) : | |
2200 | ei.blk + i - 1; | |
4c8ff709 CY |
2201 | |
2202 | if (!__is_valid_data_blkaddr(blkaddr)) | |
2203 | break; | |
2204 | ||
2205 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) { | |
2206 | ret = -EFAULT; | |
2207 | goto out_put_dnode; | |
2208 | } | |
2209 | cc->nr_cpages++; | |
94afd6d6 CY |
2210 | |
2211 | if (!from_dnode && i >= ei.c_len) | |
2212 | break; | |
4c8ff709 CY |
2213 | } |
2214 | ||
2215 | /* nothing to decompress */ | |
2216 | if (cc->nr_cpages == 0) { | |
2217 | ret = 0; | |
2218 | goto out_put_dnode; | |
2219 | } | |
2220 | ||
2221 | dic = f2fs_alloc_dic(cc); | |
2222 | if (IS_ERR(dic)) { | |
2223 | ret = PTR_ERR(dic); | |
2224 | goto out_put_dnode; | |
2225 | } | |
2226 | ||
6ce19aff | 2227 | for (i = 0; i < cc->nr_cpages; i++) { |
4c8ff709 CY |
2228 | struct page *page = dic->cpages[i]; |
2229 | block_t blkaddr; | |
7f59b277 | 2230 | struct bio_post_read_ctx *ctx; |
4c8ff709 | 2231 | |
94afd6d6 CY |
2232 | blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page, |
2233 | dn.ofs_in_node + i + 1) : | |
2234 | ei.blk + i; | |
4c8ff709 | 2235 | |
6ce19aff CY |
2236 | f2fs_wait_on_block_writeback(inode, blkaddr); |
2237 | ||
2238 | if (f2fs_load_compressed_page(sbi, page, blkaddr)) { | |
2239 | if (atomic_dec_and_test(&dic->remaining_pages)) | |
bff139b4 | 2240 | f2fs_decompress_cluster(dic, true); |
6ce19aff CY |
2241 | continue; |
2242 | } | |
2243 | ||
27aacd28 ST |
2244 | if (bio && (!page_is_mergeable(sbi, bio, |
2245 | *last_block_in_bio, blkaddr) || | |
2246 | !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) { | |
4c8ff709 CY |
2247 | submit_and_realloc: |
2248 | __submit_bio(sbi, bio, DATA); | |
2249 | bio = NULL; | |
2250 | } | |
2251 | ||
2252 | if (!bio) { | |
2253 | bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages, | |
2254 | is_readahead ? REQ_RAHEAD : 0, | |
7f59b277 | 2255 | page->index, for_write); |
4c8ff709 CY |
2256 | if (IS_ERR(bio)) { |
2257 | ret = PTR_ERR(bio); | |
bff139b4 | 2258 | f2fs_decompress_end_io(dic, ret, true); |
4c8ff709 | 2259 | f2fs_put_dnode(&dn); |
f3494345 | 2260 | *bio_ret = NULL; |
4c8ff709 CY |
2261 | return ret; |
2262 | } | |
2263 | } | |
2264 | ||
4c8ff709 CY |
2265 | if (bio_add_page(bio, page, blocksize, 0) < blocksize) |
2266 | goto submit_and_realloc; | |
2267 | ||
a4b68176 | 2268 | ctx = get_post_read_ctx(bio); |
7f59b277 EB |
2269 | ctx->enabled_steps |= STEP_DECOMPRESS; |
2270 | refcount_inc(&dic->refcnt); | |
03382f1a | 2271 | |
4c8ff709 | 2272 | inc_page_count(sbi, F2FS_RD_DATA); |
8b83ac81 | 2273 | f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE); |
9c122384 | 2274 | f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE); |
4c8ff709 CY |
2275 | ClearPageError(page); |
2276 | *last_block_in_bio = blkaddr; | |
2277 | } | |
2278 | ||
94afd6d6 CY |
2279 | if (from_dnode) |
2280 | f2fs_put_dnode(&dn); | |
4c8ff709 CY |
2281 | |
2282 | *bio_ret = bio; | |
2283 | return 0; | |
2284 | ||
2285 | out_put_dnode: | |
94afd6d6 CY |
2286 | if (from_dnode) |
2287 | f2fs_put_dnode(&dn); | |
4c8ff709 | 2288 | out: |
7f59b277 EB |
2289 | for (i = 0; i < cc->cluster_size; i++) { |
2290 | if (cc->rpages[i]) { | |
2291 | ClearPageUptodate(cc->rpages[i]); | |
2292 | ClearPageError(cc->rpages[i]); | |
2293 | unlock_page(cc->rpages[i]); | |
2294 | } | |
2295 | } | |
4c8ff709 CY |
2296 | *bio_ret = bio; |
2297 | return ret; | |
2298 | } | |
2299 | #endif | |
2300 | ||
f1e88660 JK |
2301 | /* |
2302 | * This function was originally taken from fs/mpage.c, and customized for f2fs. | |
2303 | * Major change was from block_size == page_size in f2fs by default. | |
2304 | */ | |
e20a7693 | 2305 | static int f2fs_mpage_readpages(struct inode *inode, |
23323196 | 2306 | struct readahead_control *rac, struct page *page) |
f1e88660 JK |
2307 | { |
2308 | struct bio *bio = NULL; | |
f1e88660 | 2309 | sector_t last_block_in_bio = 0; |
f1e88660 | 2310 | struct f2fs_map_blocks map; |
4c8ff709 CY |
2311 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2312 | struct compress_ctx cc = { | |
2313 | .inode = inode, | |
2314 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2315 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2316 | .cluster_idx = NULL_CLUSTER, | |
2317 | .rpages = NULL, | |
2318 | .cpages = NULL, | |
2319 | .nr_rpages = 0, | |
2320 | .nr_cpages = 0, | |
2321 | }; | |
a2649315 | 2322 | pgoff_t nc_cluster_idx = NULL_CLUSTER; |
4c8ff709 | 2323 | #endif |
23323196 | 2324 | unsigned nr_pages = rac ? readahead_count(rac) : 1; |
4c8ff709 | 2325 | unsigned max_nr_pages = nr_pages; |
2df0ab04 | 2326 | int ret = 0; |
f1e88660 JK |
2327 | |
2328 | map.m_pblk = 0; | |
2329 | map.m_lblk = 0; | |
2330 | map.m_len = 0; | |
2331 | map.m_flags = 0; | |
da85985c | 2332 | map.m_next_pgofs = NULL; |
c4020b2d | 2333 | map.m_next_extent = NULL; |
d5097be5 | 2334 | map.m_seg_type = NO_CHECK_TYPE; |
f9d6d059 | 2335 | map.m_may_create = false; |
f1e88660 | 2336 | |
736c0a74 | 2337 | for (; nr_pages; nr_pages--) { |
23323196 MWO |
2338 | if (rac) { |
2339 | page = readahead_page(rac); | |
a83d50bc | 2340 | prefetchw(&page->flags); |
f1e88660 JK |
2341 | } |
2342 | ||
4c8ff709 CY |
2343 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2344 | if (f2fs_compressed_file(inode)) { | |
2345 | /* there are remained comressed pages, submit them */ | |
2346 | if (!f2fs_cluster_can_merge_page(&cc, page->index)) { | |
2347 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2348 | max_nr_pages, | |
2349 | &last_block_in_bio, | |
23323196 | 2350 | rac != NULL, false); |
8bfbfb0d | 2351 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2352 | if (ret) |
2353 | goto set_error_page; | |
2354 | } | |
a2649315 FC |
2355 | if (cc.cluster_idx == NULL_CLUSTER) { |
2356 | if (nc_cluster_idx == | |
2357 | page->index >> cc.log_cluster_size) { | |
2358 | goto read_single_page; | |
2359 | } | |
4c8ff709 | 2360 | |
a2649315 FC |
2361 | ret = f2fs_is_compressed_cluster(inode, page->index); |
2362 | if (ret < 0) | |
2363 | goto set_error_page; | |
2364 | else if (!ret) { | |
2365 | nc_cluster_idx = | |
2366 | page->index >> cc.log_cluster_size; | |
2367 | goto read_single_page; | |
2368 | } | |
4c8ff709 | 2369 | |
a2649315 FC |
2370 | nc_cluster_idx = NULL_CLUSTER; |
2371 | } | |
4c8ff709 CY |
2372 | ret = f2fs_init_compress_ctx(&cc); |
2373 | if (ret) | |
2374 | goto set_error_page; | |
2375 | ||
2376 | f2fs_compress_ctx_add_page(&cc, page); | |
2377 | ||
2378 | goto next_page; | |
2379 | } | |
2380 | read_single_page: | |
2381 | #endif | |
2382 | ||
2383 | ret = f2fs_read_single_page(inode, page, max_nr_pages, &map, | |
23323196 | 2384 | &bio, &last_block_in_bio, rac); |
2df0ab04 | 2385 | if (ret) { |
4c8ff709 CY |
2386 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2387 | set_error_page: | |
2388 | #endif | |
2df0ab04 | 2389 | SetPageError(page); |
09cbfeaf | 2390 | zero_user_segment(page, 0, PAGE_SIZE); |
f1e88660 | 2391 | unlock_page(page); |
f1e88660 | 2392 | } |
23323196 | 2393 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
f1e88660 | 2394 | next_page: |
23323196 MWO |
2395 | #endif |
2396 | if (rac) | |
09cbfeaf | 2397 | put_page(page); |
4c8ff709 CY |
2398 | |
2399 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2400 | if (f2fs_compressed_file(inode)) { | |
2401 | /* last page */ | |
2402 | if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) { | |
2403 | ret = f2fs_read_multi_pages(&cc, &bio, | |
2404 | max_nr_pages, | |
2405 | &last_block_in_bio, | |
23323196 | 2406 | rac != NULL, false); |
8bfbfb0d | 2407 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 CY |
2408 | } |
2409 | } | |
2410 | #endif | |
f1e88660 | 2411 | } |
f1e88660 | 2412 | if (bio) |
4fc29c1a | 2413 | __submit_bio(F2FS_I_SB(inode), bio, DATA); |
23323196 | 2414 | return ret; |
f1e88660 JK |
2415 | } |
2416 | ||
be05584f | 2417 | static int f2fs_read_data_folio(struct file *file, struct folio *folio) |
eb47b800 | 2418 | { |
be05584f | 2419 | struct page *page = &folio->page; |
4969c06a | 2420 | struct inode *inode = page_file_mapping(page)->host; |
b3d208f9 | 2421 | int ret = -EAGAIN; |
9ffe0fb5 | 2422 | |
c20e89cd CY |
2423 | trace_f2fs_readpage(page, DATA); |
2424 | ||
4c8ff709 CY |
2425 | if (!f2fs_is_compress_backend_ready(inode)) { |
2426 | unlock_page(page); | |
2427 | return -EOPNOTSUPP; | |
2428 | } | |
2429 | ||
e1c42045 | 2430 | /* If the file has inline data, try to read it directly */ |
9ffe0fb5 HL |
2431 | if (f2fs_has_inline_data(inode)) |
2432 | ret = f2fs_read_inline_data(inode, page); | |
b3d208f9 | 2433 | if (ret == -EAGAIN) |
e20a7693 | 2434 | ret = f2fs_mpage_readpages(inode, NULL, page); |
9ffe0fb5 | 2435 | return ret; |
eb47b800 JK |
2436 | } |
2437 | ||
23323196 | 2438 | static void f2fs_readahead(struct readahead_control *rac) |
eb47b800 | 2439 | { |
23323196 | 2440 | struct inode *inode = rac->mapping->host; |
b8c29400 | 2441 | |
23323196 | 2442 | trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac)); |
9ffe0fb5 | 2443 | |
4c8ff709 | 2444 | if (!f2fs_is_compress_backend_ready(inode)) |
23323196 | 2445 | return; |
4c8ff709 | 2446 | |
704528d8 | 2447 | /* If the file has inline data, skip readahead */ |
9ffe0fb5 | 2448 | if (f2fs_has_inline_data(inode)) |
23323196 | 2449 | return; |
9ffe0fb5 | 2450 | |
e20a7693 | 2451 | f2fs_mpage_readpages(inode, rac, NULL); |
eb47b800 JK |
2452 | } |
2453 | ||
4c8ff709 | 2454 | int f2fs_encrypt_one_page(struct f2fs_io_info *fio) |
7eab0c0d HP |
2455 | { |
2456 | struct inode *inode = fio->page->mapping->host; | |
4c8ff709 | 2457 | struct page *mpage, *page; |
7eab0c0d HP |
2458 | gfp_t gfp_flags = GFP_NOFS; |
2459 | ||
1958593e | 2460 | if (!f2fs_encrypted_file(inode)) |
7eab0c0d HP |
2461 | return 0; |
2462 | ||
4c8ff709 CY |
2463 | page = fio->compressed_page ? fio->compressed_page : fio->page; |
2464 | ||
6dbb1796 | 2465 | /* wait for GCed page writeback via META_MAPPING */ |
0ded69f6 | 2466 | f2fs_wait_on_block_writeback(inode, fio->old_blkaddr); |
7eab0c0d | 2467 | |
27aacd28 ST |
2468 | if (fscrypt_inode_uses_inline_crypto(inode)) |
2469 | return 0; | |
2470 | ||
7eab0c0d | 2471 | retry_encrypt: |
4c8ff709 CY |
2472 | fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page, |
2473 | PAGE_SIZE, 0, gfp_flags); | |
6aa58d8a CY |
2474 | if (IS_ERR(fio->encrypted_page)) { |
2475 | /* flush pending IOs and wait for a while in the ENOMEM case */ | |
2476 | if (PTR_ERR(fio->encrypted_page) == -ENOMEM) { | |
2477 | f2fs_flush_merged_writes(fio->sbi); | |
4034247a | 2478 | memalloc_retry_wait(GFP_NOFS); |
6aa58d8a CY |
2479 | gfp_flags |= __GFP_NOFAIL; |
2480 | goto retry_encrypt; | |
2481 | } | |
2482 | return PTR_ERR(fio->encrypted_page); | |
2483 | } | |
7eab0c0d | 2484 | |
6aa58d8a CY |
2485 | mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr); |
2486 | if (mpage) { | |
2487 | if (PageUptodate(mpage)) | |
2488 | memcpy(page_address(mpage), | |
2489 | page_address(fio->encrypted_page), PAGE_SIZE); | |
2490 | f2fs_put_page(mpage, 1); | |
7eab0c0d | 2491 | } |
6aa58d8a | 2492 | return 0; |
7eab0c0d HP |
2493 | } |
2494 | ||
bb9e3bb8 CY |
2495 | static inline bool check_inplace_update_policy(struct inode *inode, |
2496 | struct f2fs_io_info *fio) | |
7eab0c0d | 2497 | { |
bb9e3bb8 CY |
2498 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
2499 | unsigned int policy = SM_I(sbi)->ipu_policy; | |
7eab0c0d | 2500 | |
1018a546 CY |
2501 | if (policy & (0x1 << F2FS_IPU_HONOR_OPU_WRITE) && |
2502 | is_inode_flag_set(inode, FI_OPU_WRITE)) | |
2503 | return false; | |
bb9e3bb8 CY |
2504 | if (policy & (0x1 << F2FS_IPU_FORCE)) |
2505 | return true; | |
4d57b86d | 2506 | if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi)) |
bb9e3bb8 CY |
2507 | return true; |
2508 | if (policy & (0x1 << F2FS_IPU_UTIL) && | |
2509 | utilization(sbi) > SM_I(sbi)->min_ipu_util) | |
2510 | return true; | |
4d57b86d | 2511 | if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) && |
bb9e3bb8 CY |
2512 | utilization(sbi) > SM_I(sbi)->min_ipu_util) |
2513 | return true; | |
2514 | ||
2515 | /* | |
2516 | * IPU for rewrite async pages | |
2517 | */ | |
2518 | if (policy & (0x1 << F2FS_IPU_ASYNC) && | |
2519 | fio && fio->op == REQ_OP_WRITE && | |
2520 | !(fio->op_flags & REQ_SYNC) && | |
62230e0d | 2521 | !IS_ENCRYPTED(inode)) |
bb9e3bb8 CY |
2522 | return true; |
2523 | ||
2524 | /* this is only set during fdatasync */ | |
2525 | if (policy & (0x1 << F2FS_IPU_FSYNC) && | |
2526 | is_inode_flag_set(inode, FI_NEED_IPU)) | |
2527 | return true; | |
2528 | ||
4354994f DR |
2529 | if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2530 | !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2531 | return true; | |
2532 | ||
bb9e3bb8 CY |
2533 | return false; |
2534 | } | |
2535 | ||
4d57b86d | 2536 | bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 | 2537 | { |
859fca6b CY |
2538 | /* swap file is migrating in aligned write mode */ |
2539 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2540 | return false; | |
2541 | ||
1ad71a27 JK |
2542 | if (f2fs_is_pinned_file(inode)) |
2543 | return true; | |
bb9e3bb8 CY |
2544 | |
2545 | /* if this is cold file, we should overwrite to avoid fragmentation */ | |
2546 | if (file_is_cold(inode)) | |
2547 | return true; | |
2548 | ||
2549 | return check_inplace_update_policy(inode, fio); | |
2550 | } | |
2551 | ||
4d57b86d | 2552 | bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio) |
bb9e3bb8 CY |
2553 | { |
2554 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
2555 | ||
19bdba52 JK |
2556 | /* The below cases were checked when setting it. */ |
2557 | if (f2fs_is_pinned_file(inode)) | |
2558 | return false; | |
2559 | if (fio && is_sbi_flag_set(sbi, SBI_NEED_FSCK)) | |
2560 | return true; | |
b0332a0f | 2561 | if (f2fs_lfs_mode(sbi)) |
bb9e3bb8 CY |
2562 | return true; |
2563 | if (S_ISDIR(inode->i_mode)) | |
2564 | return true; | |
af033b2a CY |
2565 | if (IS_NOQUOTA(inode)) |
2566 | return true; | |
bb9e3bb8 CY |
2567 | if (f2fs_is_atomic_file(inode)) |
2568 | return true; | |
859fca6b CY |
2569 | |
2570 | /* swap file is migrating in aligned write mode */ | |
2571 | if (is_inode_flag_set(inode, FI_ALIGNED_WRITE)) | |
2572 | return true; | |
2573 | ||
1018a546 CY |
2574 | if (is_inode_flag_set(inode, FI_OPU_WRITE)) |
2575 | return true; | |
2576 | ||
bb9e3bb8 | 2577 | if (fio) { |
b763f3be | 2578 | if (page_private_gcing(fio->page)) |
bb9e3bb8 | 2579 | return true; |
b763f3be | 2580 | if (page_private_dummy(fio->page)) |
bb9e3bb8 | 2581 | return true; |
4354994f DR |
2582 | if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) && |
2583 | f2fs_is_checkpointed_data(sbi, fio->old_blkaddr))) | |
2584 | return true; | |
bb9e3bb8 CY |
2585 | } |
2586 | return false; | |
2587 | } | |
2588 | ||
7eab0c0d HP |
2589 | static inline bool need_inplace_update(struct f2fs_io_info *fio) |
2590 | { | |
2591 | struct inode *inode = fio->page->mapping->host; | |
2592 | ||
4d57b86d | 2593 | if (f2fs_should_update_outplace(inode, fio)) |
7eab0c0d HP |
2594 | return false; |
2595 | ||
4d57b86d | 2596 | return f2fs_should_update_inplace(inode, fio); |
7eab0c0d HP |
2597 | } |
2598 | ||
4d57b86d | 2599 | int f2fs_do_write_data_page(struct f2fs_io_info *fio) |
eb47b800 | 2600 | { |
05ca3632 | 2601 | struct page *page = fio->page; |
eb47b800 | 2602 | struct inode *inode = page->mapping->host; |
eb47b800 | 2603 | struct dnode_of_data dn; |
94afd6d6 | 2604 | struct extent_info ei = {0, }; |
7735730d | 2605 | struct node_info ni; |
e959c8f5 | 2606 | bool ipu_force = false; |
eb47b800 JK |
2607 | int err = 0; |
2608 | ||
3db1de0e DJ |
2609 | /* Use COW inode to make dnode_of_data for atomic write */ |
2610 | if (f2fs_is_atomic_file(inode)) | |
2611 | set_new_dnode(&dn, F2FS_I(inode)->cow_inode, NULL, NULL, 0); | |
2612 | else | |
2613 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
2614 | ||
e959c8f5 HP |
2615 | if (need_inplace_update(fio) && |
2616 | f2fs_lookup_extent_cache(inode, page->index, &ei)) { | |
2617 | fio->old_blkaddr = ei.blk + page->index - ei.fofs; | |
a817737e | 2618 | |
c9b60788 | 2619 | if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, |
93770ab7 | 2620 | DATA_GENERIC_ENHANCE)) |
10f966bb | 2621 | return -EFSCORRUPTED; |
c9b60788 CY |
2622 | |
2623 | ipu_force = true; | |
2624 | fio->need_lock = LOCK_DONE; | |
2625 | goto got_it; | |
e959c8f5 | 2626 | } |
279d6df2 | 2627 | |
d29460e5 JK |
2628 | /* Deadlock due to between page->lock and f2fs_lock_op */ |
2629 | if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi)) | |
2630 | return -EAGAIN; | |
279d6df2 | 2631 | |
4d57b86d | 2632 | err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE); |
eb47b800 | 2633 | if (err) |
279d6df2 | 2634 | goto out; |
eb47b800 | 2635 | |
28bc106b | 2636 | fio->old_blkaddr = dn.data_blkaddr; |
eb47b800 JK |
2637 | |
2638 | /* This page is already truncated */ | |
7a9d7548 | 2639 | if (fio->old_blkaddr == NULL_ADDR) { |
2bca1e23 | 2640 | ClearPageUptodate(page); |
b763f3be | 2641 | clear_page_private_gcing(page); |
eb47b800 | 2642 | goto out_writepage; |
2bca1e23 | 2643 | } |
e959c8f5 | 2644 | got_it: |
c9b60788 CY |
2645 | if (__is_valid_data_blkaddr(fio->old_blkaddr) && |
2646 | !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr, | |
93770ab7 | 2647 | DATA_GENERIC_ENHANCE)) { |
10f966bb | 2648 | err = -EFSCORRUPTED; |
c9b60788 CY |
2649 | goto out_writepage; |
2650 | } | |
3db1de0e | 2651 | |
eb47b800 JK |
2652 | /* |
2653 | * If current allocation needs SSR, | |
2654 | * it had better in-place writes for updated data. | |
2655 | */ | |
93770ab7 CY |
2656 | if (ipu_force || |
2657 | (__is_valid_data_blkaddr(fio->old_blkaddr) && | |
7b525dd0 | 2658 | need_inplace_update(fio))) { |
4c8ff709 | 2659 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2660 | if (err) |
2661 | goto out_writepage; | |
2662 | ||
2663 | set_page_writeback(page); | |
17c50035 | 2664 | ClearPageError(page); |
279d6df2 | 2665 | f2fs_put_dnode(&dn); |
cc15620b | 2666 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2667 | f2fs_unlock_op(fio->sbi); |
4d57b86d | 2668 | err = f2fs_inplace_write_data(fio); |
6492a335 | 2669 | if (err) { |
27aacd28 | 2670 | if (fscrypt_inode_uses_fs_layer_crypto(inode)) |
d2d0727b | 2671 | fscrypt_finalize_bounce_page(&fio->encrypted_page); |
6492a335 CY |
2672 | if (PageWriteback(page)) |
2673 | end_page_writeback(page); | |
cd23ffa9 CY |
2674 | } else { |
2675 | set_inode_flag(inode, FI_UPDATE_WRITE); | |
6492a335 | 2676 | } |
7eab0c0d | 2677 | trace_f2fs_do_write_data_page(fio->page, IPU); |
279d6df2 | 2678 | return err; |
eb47b800 | 2679 | } |
279d6df2 | 2680 | |
cc15620b JK |
2681 | if (fio->need_lock == LOCK_RETRY) { |
2682 | if (!f2fs_trylock_op(fio->sbi)) { | |
2683 | err = -EAGAIN; | |
2684 | goto out_writepage; | |
2685 | } | |
2686 | fio->need_lock = LOCK_REQ; | |
2687 | } | |
2688 | ||
a9419b63 | 2689 | err = f2fs_get_node_info(fio->sbi, dn.nid, &ni, false); |
7735730d CY |
2690 | if (err) |
2691 | goto out_writepage; | |
2692 | ||
2693 | fio->version = ni.version; | |
2694 | ||
4c8ff709 | 2695 | err = f2fs_encrypt_one_page(fio); |
cc15620b JK |
2696 | if (err) |
2697 | goto out_writepage; | |
2698 | ||
2699 | set_page_writeback(page); | |
17c50035 | 2700 | ClearPageError(page); |
cc15620b | 2701 | |
4c8ff709 CY |
2702 | if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR) |
2703 | f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false); | |
2704 | ||
279d6df2 | 2705 | /* LFS mode write path */ |
4d57b86d | 2706 | f2fs_outplace_write_data(&dn, fio); |
279d6df2 HP |
2707 | trace_f2fs_do_write_data_page(page, OPU); |
2708 | set_inode_flag(inode, FI_APPEND_WRITE); | |
2709 | if (page->index == 0) | |
2710 | set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); | |
eb47b800 JK |
2711 | out_writepage: |
2712 | f2fs_put_dnode(&dn); | |
279d6df2 | 2713 | out: |
cc15620b | 2714 | if (fio->need_lock == LOCK_REQ) |
279d6df2 | 2715 | f2fs_unlock_op(fio->sbi); |
eb47b800 JK |
2716 | return err; |
2717 | } | |
2718 | ||
4c8ff709 | 2719 | int f2fs_write_single_data_page(struct page *page, int *submitted, |
8648de2c CY |
2720 | struct bio **bio, |
2721 | sector_t *last_block, | |
b0af6d49 | 2722 | struct writeback_control *wbc, |
4c8ff709 | 2723 | enum iostat_type io_type, |
3afae09f CY |
2724 | int compr_blocks, |
2725 | bool allow_balance) | |
eb47b800 JK |
2726 | { |
2727 | struct inode *inode = page->mapping->host; | |
4081363f | 2728 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
eb47b800 | 2729 | loff_t i_size = i_size_read(inode); |
4c8ff709 | 2730 | const pgoff_t end_index = ((unsigned long long)i_size) |
09cbfeaf | 2731 | >> PAGE_SHIFT; |
1f0d5c91 | 2732 | loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT; |
9ffe0fb5 | 2733 | unsigned offset = 0; |
39936837 | 2734 | bool need_balance_fs = false; |
eb47b800 | 2735 | int err = 0; |
458e6197 | 2736 | struct f2fs_io_info fio = { |
05ca3632 | 2737 | .sbi = sbi, |
39d787be | 2738 | .ino = inode->i_ino, |
458e6197 | 2739 | .type = DATA, |
04d328de | 2740 | .op = REQ_OP_WRITE, |
7637241e | 2741 | .op_flags = wbc_to_write_flags(wbc), |
e959c8f5 | 2742 | .old_blkaddr = NULL_ADDR, |
05ca3632 | 2743 | .page = page, |
4375a336 | 2744 | .encrypted_page = NULL, |
d68f735b | 2745 | .submitted = false, |
4c8ff709 | 2746 | .compr_blocks = compr_blocks, |
cc15620b | 2747 | .need_lock = LOCK_RETRY, |
0d5b9d81 | 2748 | .post_read = f2fs_post_read_required(inode), |
b0af6d49 | 2749 | .io_type = io_type, |
578c6478 | 2750 | .io_wbc = wbc, |
8648de2c CY |
2751 | .bio = bio, |
2752 | .last_block = last_block, | |
458e6197 | 2753 | }; |
eb47b800 | 2754 | |
ecda0de3 CY |
2755 | trace_f2fs_writepage(page, DATA); |
2756 | ||
db198ae0 CY |
2757 | /* we should bypass data pages to proceed the kworkder jobs */ |
2758 | if (unlikely(f2fs_cp_error(sbi))) { | |
2759 | mapping_set_error(page->mapping, -EIO); | |
1174abfd CY |
2760 | /* |
2761 | * don't drop any dirty dentry pages for keeping lastest | |
2762 | * directory structure. | |
2763 | */ | |
2764 | if (S_ISDIR(inode->i_mode)) | |
2765 | goto redirty_out; | |
db198ae0 CY |
2766 | goto out; |
2767 | } | |
2768 | ||
0771fcc7 CY |
2769 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) |
2770 | goto redirty_out; | |
2771 | ||
4c8ff709 CY |
2772 | if (page->index < end_index || |
2773 | f2fs_verity_in_progress(inode) || | |
2774 | compr_blocks) | |
39936837 | 2775 | goto write; |
eb47b800 JK |
2776 | |
2777 | /* | |
2778 | * If the offset is out-of-range of file size, | |
2779 | * this page does not have to be written to disk. | |
2780 | */ | |
09cbfeaf | 2781 | offset = i_size & (PAGE_SIZE - 1); |
76f60268 | 2782 | if ((page->index >= end_index + 1) || !offset) |
39936837 | 2783 | goto out; |
eb47b800 | 2784 | |
09cbfeaf | 2785 | zero_user_segment(page, offset, PAGE_SIZE); |
39936837 | 2786 | write: |
1e84371f JK |
2787 | if (f2fs_is_drop_cache(inode)) |
2788 | goto out; | |
eb47b800 | 2789 | |
435cbab9 JK |
2790 | /* Dentry/quota blocks are controlled by checkpoint */ |
2791 | if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) { | |
79963d96 CY |
2792 | /* |
2793 | * We need to wait for node_write to avoid block allocation during | |
2794 | * checkpoint. This can only happen to quota writes which can cause | |
2795 | * the below discard race condition. | |
2796 | */ | |
2797 | if (IS_NOQUOTA(inode)) | |
e4544b63 | 2798 | f2fs_down_read(&sbi->node_write); |
79963d96 | 2799 | |
cc15620b | 2800 | fio.need_lock = LOCK_DONE; |
4d57b86d | 2801 | err = f2fs_do_write_data_page(&fio); |
79963d96 CY |
2802 | |
2803 | if (IS_NOQUOTA(inode)) | |
e4544b63 | 2804 | f2fs_up_read(&sbi->node_write); |
79963d96 | 2805 | |
8618b881 JK |
2806 | goto done; |
2807 | } | |
9ffe0fb5 | 2808 | |
8618b881 | 2809 | if (!wbc->for_reclaim) |
39936837 | 2810 | need_balance_fs = true; |
7f3037a5 | 2811 | else if (has_not_enough_free_secs(sbi, 0, 0)) |
39936837 | 2812 | goto redirty_out; |
ef095d19 JK |
2813 | else |
2814 | set_inode_flag(inode, FI_HOT_DATA); | |
eb47b800 | 2815 | |
b3d208f9 | 2816 | err = -EAGAIN; |
dd7b2333 | 2817 | if (f2fs_has_inline_data(inode)) { |
b3d208f9 | 2818 | err = f2fs_write_inline_data(inode, page); |
dd7b2333 YH |
2819 | if (!err) |
2820 | goto out; | |
2821 | } | |
279d6df2 | 2822 | |
cc15620b | 2823 | if (err == -EAGAIN) { |
4d57b86d | 2824 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2825 | if (err == -EAGAIN) { |
2826 | fio.need_lock = LOCK_REQ; | |
4d57b86d | 2827 | err = f2fs_do_write_data_page(&fio); |
cc15620b JK |
2828 | } |
2829 | } | |
a0d00fad | 2830 | |
eb449797 CY |
2831 | if (err) { |
2832 | file_set_keep_isize(inode); | |
2833 | } else { | |
c10c9820 | 2834 | spin_lock(&F2FS_I(inode)->i_size_lock); |
eb449797 CY |
2835 | if (F2FS_I(inode)->last_disk_size < psize) |
2836 | F2FS_I(inode)->last_disk_size = psize; | |
c10c9820 | 2837 | spin_unlock(&F2FS_I(inode)->i_size_lock); |
eb449797 | 2838 | } |
279d6df2 | 2839 | |
8618b881 JK |
2840 | done: |
2841 | if (err && err != -ENOENT) | |
2842 | goto redirty_out; | |
eb47b800 | 2843 | |
39936837 | 2844 | out: |
a7ffdbe2 | 2845 | inode_dec_dirty_pages(inode); |
2baf0781 | 2846 | if (err) { |
2bca1e23 | 2847 | ClearPageUptodate(page); |
b763f3be | 2848 | clear_page_private_gcing(page); |
2baf0781 | 2849 | } |
0c3a5797 CY |
2850 | |
2851 | if (wbc->for_reclaim) { | |
bab475c5 | 2852 | f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA); |
ef095d19 | 2853 | clear_inode_flag(inode, FI_HOT_DATA); |
4d57b86d | 2854 | f2fs_remove_dirty_inode(inode); |
d68f735b | 2855 | submitted = NULL; |
0c3a5797 | 2856 | } |
eb47b800 | 2857 | unlock_page(page); |
186857c5 | 2858 | if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) && |
3afae09f | 2859 | !F2FS_I(inode)->cp_task && allow_balance) |
a7881893 | 2860 | f2fs_balance_fs(sbi, need_balance_fs); |
0c3a5797 | 2861 | |
d68f735b | 2862 | if (unlikely(f2fs_cp_error(sbi))) { |
b9109b0e | 2863 | f2fs_submit_merged_write(sbi, DATA); |
0b20fcec | 2864 | f2fs_submit_merged_ipu_write(sbi, bio, NULL); |
d68f735b JK |
2865 | submitted = NULL; |
2866 | } | |
2867 | ||
2868 | if (submitted) | |
4c8ff709 | 2869 | *submitted = fio.submitted ? 1 : 0; |
0c3a5797 | 2870 | |
eb47b800 JK |
2871 | return 0; |
2872 | ||
eb47b800 | 2873 | redirty_out: |
76f60268 | 2874 | redirty_page_for_writepage(wbc, page); |
5b19d284 JK |
2875 | /* |
2876 | * pageout() in MM traslates EAGAIN, so calls handle_write_error() | |
2877 | * -> mapping_set_error() -> set_bit(AS_EIO, ...). | |
2878 | * file_write_and_wait_range() will see EIO error, which is critical | |
2879 | * to return value of fsync() followed by atomic_write failure to user. | |
2880 | */ | |
2881 | if (!err || wbc->for_reclaim) | |
0002b61b | 2882 | return AOP_WRITEPAGE_ACTIVATE; |
b230e6ca JK |
2883 | unlock_page(page); |
2884 | return err; | |
fa9150a8 NJ |
2885 | } |
2886 | ||
f566bae8 JK |
2887 | static int f2fs_write_data_page(struct page *page, |
2888 | struct writeback_control *wbc) | |
2889 | { | |
4c8ff709 CY |
2890 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2891 | struct inode *inode = page->mapping->host; | |
2892 | ||
2893 | if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) | |
2894 | goto out; | |
2895 | ||
2896 | if (f2fs_compressed_file(inode)) { | |
2897 | if (f2fs_is_compressed_cluster(inode, page->index)) { | |
2898 | redirty_page_for_writepage(wbc, page); | |
2899 | return AOP_WRITEPAGE_ACTIVATE; | |
2900 | } | |
2901 | } | |
2902 | out: | |
2903 | #endif | |
2904 | ||
2905 | return f2fs_write_single_data_page(page, NULL, NULL, NULL, | |
3afae09f | 2906 | wbc, FS_DATA_IO, 0, true); |
f566bae8 JK |
2907 | } |
2908 | ||
8f46dcae CY |
2909 | /* |
2910 | * This function was copied from write_cche_pages from mm/page-writeback.c. | |
2911 | * The major change is making write step of cold data page separately from | |
2912 | * warm/hot data page. | |
2913 | */ | |
2914 | static int f2fs_write_cache_pages(struct address_space *mapping, | |
b0af6d49 CY |
2915 | struct writeback_control *wbc, |
2916 | enum iostat_type io_type) | |
8f46dcae CY |
2917 | { |
2918 | int ret = 0; | |
4c8ff709 | 2919 | int done = 0, retry = 0; |
01fc4b9a | 2920 | struct page *pages[F2FS_ONSTACK_PAGES]; |
c29fd0c0 | 2921 | struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); |
8648de2c CY |
2922 | struct bio *bio = NULL; |
2923 | sector_t last_block; | |
4c8ff709 CY |
2924 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
2925 | struct inode *inode = mapping->host; | |
2926 | struct compress_ctx cc = { | |
2927 | .inode = inode, | |
2928 | .log_cluster_size = F2FS_I(inode)->i_log_cluster_size, | |
2929 | .cluster_size = F2FS_I(inode)->i_cluster_size, | |
2930 | .cluster_idx = NULL_CLUSTER, | |
2931 | .rpages = NULL, | |
2932 | .nr_rpages = 0, | |
2933 | .cpages = NULL, | |
3271d7eb | 2934 | .valid_nr_cpages = 0, |
4c8ff709 CY |
2935 | .rbuf = NULL, |
2936 | .cbuf = NULL, | |
2937 | .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size, | |
2938 | .private = NULL, | |
2939 | }; | |
2940 | #endif | |
8f46dcae | 2941 | int nr_pages; |
8f46dcae CY |
2942 | pgoff_t index; |
2943 | pgoff_t end; /* Inclusive */ | |
2944 | pgoff_t done_index; | |
8f46dcae | 2945 | int range_whole = 0; |
10bbd235 | 2946 | xa_mark_t tag; |
bab475c5 | 2947 | int nwritten = 0; |
4c8ff709 CY |
2948 | int submitted = 0; |
2949 | int i; | |
8f46dcae | 2950 | |
ef095d19 JK |
2951 | if (get_dirty_pages(mapping->host) <= |
2952 | SM_I(F2FS_M_SB(mapping))->min_hot_blocks) | |
2953 | set_inode_flag(mapping->host, FI_HOT_DATA); | |
2954 | else | |
2955 | clear_inode_flag(mapping->host, FI_HOT_DATA); | |
2956 | ||
8f46dcae | 2957 | if (wbc->range_cyclic) { |
4df7a75f | 2958 | index = mapping->writeback_index; /* prev offset */ |
8f46dcae CY |
2959 | end = -1; |
2960 | } else { | |
09cbfeaf KS |
2961 | index = wbc->range_start >> PAGE_SHIFT; |
2962 | end = wbc->range_end >> PAGE_SHIFT; | |
8f46dcae CY |
2963 | if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) |
2964 | range_whole = 1; | |
8f46dcae CY |
2965 | } |
2966 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) | |
2967 | tag = PAGECACHE_TAG_TOWRITE; | |
2968 | else | |
2969 | tag = PAGECACHE_TAG_DIRTY; | |
2970 | retry: | |
4c8ff709 | 2971 | retry = 0; |
8f46dcae CY |
2972 | if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) |
2973 | tag_pages_for_writeback(mapping, index, end); | |
2974 | done_index = index; | |
4c8ff709 | 2975 | while (!done && !retry && (index <= end)) { |
01fc4b9a FC |
2976 | nr_pages = find_get_pages_range_tag(mapping, &index, end, |
2977 | tag, F2FS_ONSTACK_PAGES, pages); | |
8f46dcae CY |
2978 | if (nr_pages == 0) |
2979 | break; | |
2980 | ||
2981 | for (i = 0; i < nr_pages; i++) { | |
01fc4b9a | 2982 | struct page *page = pages[i]; |
4c8ff709 CY |
2983 | bool need_readd; |
2984 | readd: | |
2985 | need_readd = false; | |
2986 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
2987 | if (f2fs_compressed_file(inode)) { | |
b368cc5e FC |
2988 | void *fsdata = NULL; |
2989 | struct page *pagep; | |
2990 | int ret2; | |
2991 | ||
4c8ff709 CY |
2992 | ret = f2fs_init_compress_ctx(&cc); |
2993 | if (ret) { | |
2994 | done = 1; | |
2995 | break; | |
2996 | } | |
2997 | ||
2998 | if (!f2fs_cluster_can_merge_page(&cc, | |
2999 | page->index)) { | |
3000 | ret = f2fs_write_multi_pages(&cc, | |
3001 | &submitted, wbc, io_type); | |
3002 | if (!ret) | |
3003 | need_readd = true; | |
3004 | goto result; | |
3005 | } | |
8f46dcae | 3006 | |
4c8ff709 CY |
3007 | if (unlikely(f2fs_cp_error(sbi))) |
3008 | goto lock_page; | |
3009 | ||
b368cc5e FC |
3010 | if (!f2fs_cluster_is_empty(&cc)) |
3011 | goto lock_page; | |
4c8ff709 | 3012 | |
4f8219f8 | 3013 | if (f2fs_all_cluster_page_ready(&cc, |
01fc4b9a | 3014 | pages, i, nr_pages, true)) |
4f8219f8 FC |
3015 | goto lock_page; |
3016 | ||
b368cc5e | 3017 | ret2 = f2fs_prepare_compress_overwrite( |
4c8ff709 CY |
3018 | inode, &pagep, |
3019 | page->index, &fsdata); | |
b368cc5e FC |
3020 | if (ret2 < 0) { |
3021 | ret = ret2; | |
3022 | done = 1; | |
3023 | break; | |
3024 | } else if (ret2 && | |
3025 | (!f2fs_compress_write_end(inode, | |
3026 | fsdata, page->index, 1) || | |
4f8219f8 | 3027 | !f2fs_all_cluster_page_ready(&cc, |
01fc4b9a | 3028 | pages, i, nr_pages, false))) { |
b368cc5e FC |
3029 | retry = 1; |
3030 | break; | |
4c8ff709 CY |
3031 | } |
3032 | } | |
3033 | #endif | |
f8de4331 | 3034 | /* give a priority to WB_SYNC threads */ |
c29fd0c0 | 3035 | if (atomic_read(&sbi->wb_sync_req[DATA]) && |
f8de4331 CY |
3036 | wbc->sync_mode == WB_SYNC_NONE) { |
3037 | done = 1; | |
3038 | break; | |
3039 | } | |
4c8ff709 CY |
3040 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3041 | lock_page: | |
3042 | #endif | |
8f46dcae | 3043 | done_index = page->index; |
d29460e5 | 3044 | retry_write: |
8f46dcae CY |
3045 | lock_page(page); |
3046 | ||
3047 | if (unlikely(page->mapping != mapping)) { | |
3048 | continue_unlock: | |
3049 | unlock_page(page); | |
3050 | continue; | |
3051 | } | |
3052 | ||
3053 | if (!PageDirty(page)) { | |
3054 | /* someone wrote it for us */ | |
3055 | goto continue_unlock; | |
3056 | } | |
3057 | ||
8f46dcae | 3058 | if (PageWriteback(page)) { |
0b20fcec | 3059 | if (wbc->sync_mode != WB_SYNC_NONE) |
fec1d657 | 3060 | f2fs_wait_on_page_writeback(page, |
bae0ee7a | 3061 | DATA, true, true); |
0b20fcec | 3062 | else |
8f46dcae CY |
3063 | goto continue_unlock; |
3064 | } | |
3065 | ||
8f46dcae CY |
3066 | if (!clear_page_dirty_for_io(page)) |
3067 | goto continue_unlock; | |
3068 | ||
4c8ff709 CY |
3069 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3070 | if (f2fs_compressed_file(inode)) { | |
3071 | get_page(page); | |
3072 | f2fs_compress_ctx_add_page(&cc, page); | |
3073 | continue; | |
3074 | } | |
3075 | #endif | |
3076 | ret = f2fs_write_single_data_page(page, &submitted, | |
3afae09f CY |
3077 | &bio, &last_block, wbc, io_type, |
3078 | 0, true); | |
4c8ff709 CY |
3079 | if (ret == AOP_WRITEPAGE_ACTIVATE) |
3080 | unlock_page(page); | |
3081 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3082 | result: | |
3083 | #endif | |
3084 | nwritten += submitted; | |
3085 | wbc->nr_to_write -= submitted; | |
3086 | ||
8f46dcae | 3087 | if (unlikely(ret)) { |
0002b61b CY |
3088 | /* |
3089 | * keep nr_to_write, since vfs uses this to | |
3090 | * get # of written pages. | |
3091 | */ | |
3092 | if (ret == AOP_WRITEPAGE_ACTIVATE) { | |
0002b61b | 3093 | ret = 0; |
4c8ff709 | 3094 | goto next; |
d29460e5 JK |
3095 | } else if (ret == -EAGAIN) { |
3096 | ret = 0; | |
3097 | if (wbc->sync_mode == WB_SYNC_ALL) { | |
a64239d0 | 3098 | f2fs_io_schedule_timeout( |
5df7731f | 3099 | DEFAULT_IO_TIMEOUT); |
d29460e5 JK |
3100 | goto retry_write; |
3101 | } | |
4c8ff709 | 3102 | goto next; |
0002b61b | 3103 | } |
b230e6ca JK |
3104 | done_index = page->index + 1; |
3105 | done = 1; | |
3106 | break; | |
8f46dcae CY |
3107 | } |
3108 | ||
4c8ff709 | 3109 | if (wbc->nr_to_write <= 0 && |
687de7f1 | 3110 | wbc->sync_mode == WB_SYNC_NONE) { |
8f46dcae CY |
3111 | done = 1; |
3112 | break; | |
3113 | } | |
4c8ff709 CY |
3114 | next: |
3115 | if (need_readd) | |
3116 | goto readd; | |
8f46dcae | 3117 | } |
01fc4b9a | 3118 | release_pages(pages, nr_pages); |
8f46dcae CY |
3119 | cond_resched(); |
3120 | } | |
4c8ff709 CY |
3121 | #ifdef CONFIG_F2FS_FS_COMPRESSION |
3122 | /* flush remained pages in compress cluster */ | |
3123 | if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) { | |
3124 | ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type); | |
3125 | nwritten += submitted; | |
3126 | wbc->nr_to_write -= submitted; | |
3127 | if (ret) { | |
3128 | done = 1; | |
3129 | retry = 0; | |
3130 | } | |
3131 | } | |
adfc6943 | 3132 | if (f2fs_compressed_file(inode)) |
8bfbfb0d | 3133 | f2fs_destroy_compress_ctx(&cc, false); |
4c8ff709 | 3134 | #endif |
e78790f8 | 3135 | if (retry) { |
8f46dcae | 3136 | index = 0; |
e78790f8 | 3137 | end = -1; |
8f46dcae CY |
3138 | goto retry; |
3139 | } | |
e78790f8 ST |
3140 | if (wbc->range_cyclic && !done) |
3141 | done_index = 0; | |
8f46dcae CY |
3142 | if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0)) |
3143 | mapping->writeback_index = done_index; | |
3144 | ||
bab475c5 | 3145 | if (nwritten) |
b9109b0e | 3146 | f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host, |
bab475c5 | 3147 | NULL, 0, DATA); |
8648de2c CY |
3148 | /* submit cached bio of IPU write */ |
3149 | if (bio) | |
0b20fcec | 3150 | f2fs_submit_merged_ipu_write(sbi, &bio, NULL); |
6ca56ca4 | 3151 | |
8f46dcae CY |
3152 | return ret; |
3153 | } | |
3154 | ||
853137ce JK |
3155 | static inline bool __should_serialize_io(struct inode *inode, |
3156 | struct writeback_control *wbc) | |
3157 | { | |
b13f67ff CY |
3158 | /* to avoid deadlock in path of data flush */ |
3159 | if (F2FS_I(inode)->cp_task) | |
3160 | return false; | |
3161 | ||
853137ce JK |
3162 | if (!S_ISREG(inode->i_mode)) |
3163 | return false; | |
af033b2a CY |
3164 | if (IS_NOQUOTA(inode)) |
3165 | return false; | |
b13f67ff | 3166 | |
602a16d5 | 3167 | if (f2fs_need_compress_data(inode)) |
b13f67ff | 3168 | return true; |
853137ce JK |
3169 | if (wbc->sync_mode != WB_SYNC_ALL) |
3170 | return true; | |
3171 | if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks) | |
3172 | return true; | |
3173 | return false; | |
3174 | } | |
3175 | ||
fc99fe27 | 3176 | static int __f2fs_write_data_pages(struct address_space *mapping, |
b0af6d49 CY |
3177 | struct writeback_control *wbc, |
3178 | enum iostat_type io_type) | |
eb47b800 JK |
3179 | { |
3180 | struct inode *inode = mapping->host; | |
4081363f | 3181 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
9dfa1baf | 3182 | struct blk_plug plug; |
eb47b800 | 3183 | int ret; |
853137ce | 3184 | bool locked = false; |
eb47b800 | 3185 | |
cfb185a1 | 3186 | /* deal with chardevs and other special file */ |
3187 | if (!mapping->a_ops->writepage) | |
3188 | return 0; | |
3189 | ||
6a290544 CY |
3190 | /* skip writing if there is no dirty page in this inode */ |
3191 | if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) | |
3192 | return 0; | |
3193 | ||
0771fcc7 CY |
3194 | /* during POR, we don't need to trigger writepage at all. */ |
3195 | if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) | |
3196 | goto skip_write; | |
3197 | ||
af033b2a CY |
3198 | if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) && |
3199 | wbc->sync_mode == WB_SYNC_NONE && | |
a1257023 | 3200 | get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && |
4d57b86d | 3201 | f2fs_available_free_memory(sbi, DIRTY_DENTS)) |
a1257023 JK |
3202 | goto skip_write; |
3203 | ||
1018a546 CY |
3204 | /* skip writing in file defragment preparing stage */ |
3205 | if (is_inode_flag_set(inode, FI_SKIP_WRITES)) | |
d323d005 CY |
3206 | goto skip_write; |
3207 | ||
d31c7c3f YH |
3208 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
3209 | ||
687de7f1 JK |
3210 | /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ |
3211 | if (wbc->sync_mode == WB_SYNC_ALL) | |
c29fd0c0 | 3212 | atomic_inc(&sbi->wb_sync_req[DATA]); |
34415099 CY |
3213 | else if (atomic_read(&sbi->wb_sync_req[DATA])) { |
3214 | /* to avoid potential deadlock */ | |
3215 | if (current->plug) | |
3216 | blk_finish_plug(current->plug); | |
687de7f1 | 3217 | goto skip_write; |
34415099 | 3218 | } |
687de7f1 | 3219 | |
853137ce JK |
3220 | if (__should_serialize_io(inode, wbc)) { |
3221 | mutex_lock(&sbi->writepages); | |
3222 | locked = true; | |
3223 | } | |
3224 | ||
9dfa1baf | 3225 | blk_start_plug(&plug); |
b0af6d49 | 3226 | ret = f2fs_write_cache_pages(mapping, wbc, io_type); |
9dfa1baf | 3227 | blk_finish_plug(&plug); |
687de7f1 | 3228 | |
853137ce JK |
3229 | if (locked) |
3230 | mutex_unlock(&sbi->writepages); | |
3231 | ||
687de7f1 | 3232 | if (wbc->sync_mode == WB_SYNC_ALL) |
c29fd0c0 | 3233 | atomic_dec(&sbi->wb_sync_req[DATA]); |
28ea6162 JK |
3234 | /* |
3235 | * if some pages were truncated, we cannot guarantee its mapping->host | |
3236 | * to detect pending bios. | |
3237 | */ | |
458e6197 | 3238 | |
4d57b86d | 3239 | f2fs_remove_dirty_inode(inode); |
eb47b800 | 3240 | return ret; |
d3baf95d JK |
3241 | |
3242 | skip_write: | |
a7ffdbe2 | 3243 | wbc->pages_skipped += get_dirty_pages(inode); |
d31c7c3f | 3244 | trace_f2fs_writepages(mapping->host, wbc, DATA); |
d3baf95d | 3245 | return 0; |
eb47b800 JK |
3246 | } |
3247 | ||
b0af6d49 CY |
3248 | static int f2fs_write_data_pages(struct address_space *mapping, |
3249 | struct writeback_control *wbc) | |
3250 | { | |
3251 | struct inode *inode = mapping->host; | |
3252 | ||
3253 | return __f2fs_write_data_pages(mapping, wbc, | |
3254 | F2FS_I(inode)->cp_task == current ? | |
3255 | FS_CP_DATA_IO : FS_DATA_IO); | |
3256 | } | |
3257 | ||
a1e09b03 | 3258 | void f2fs_write_failed(struct inode *inode, loff_t to) |
3aab8f82 | 3259 | { |
819d9153 | 3260 | loff_t i_size = i_size_read(inode); |
3aab8f82 | 3261 | |
3f188c23 JK |
3262 | if (IS_NOQUOTA(inode)) |
3263 | return; | |
3264 | ||
95ae251f EB |
3265 | /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */ |
3266 | if (to > i_size && !f2fs_verity_in_progress(inode)) { | |
e4544b63 | 3267 | f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
6abaa83c | 3268 | filemap_invalidate_lock(inode->i_mapping); |
a33c1502 | 3269 | |
819d9153 | 3270 | truncate_pagecache(inode, i_size); |
3f188c23 | 3271 | f2fs_truncate_blocks(inode, i_size, true); |
a33c1502 | 3272 | |
6abaa83c | 3273 | filemap_invalidate_unlock(inode->i_mapping); |
e4544b63 | 3274 | f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
3aab8f82 CY |
3275 | } |
3276 | } | |
3277 | ||
2aadac08 JK |
3278 | static int prepare_write_begin(struct f2fs_sb_info *sbi, |
3279 | struct page *page, loff_t pos, unsigned len, | |
3280 | block_t *blk_addr, bool *node_changed) | |
3281 | { | |
3282 | struct inode *inode = page->mapping->host; | |
3283 | pgoff_t index = page->index; | |
3284 | struct dnode_of_data dn; | |
3285 | struct page *ipage; | |
b4d07a3e | 3286 | bool locked = false; |
94afd6d6 | 3287 | struct extent_info ei = {0, }; |
2aadac08 | 3288 | int err = 0; |
2866fb16 | 3289 | int flag; |
2aadac08 | 3290 | |
24b84912 | 3291 | /* |
3d697a4a EB |
3292 | * If a whole page is being written and we already preallocated all the |
3293 | * blocks, then there is no need to get a block address now. | |
24b84912 | 3294 | */ |
3d697a4a | 3295 | if (len == PAGE_SIZE && is_inode_flag_set(inode, FI_PREALLOCATED_ALL)) |
24b84912 JK |
3296 | return 0; |
3297 | ||
2866fb16 SY |
3298 | /* f2fs_lock_op avoids race between write CP and convert_inline_page */ |
3299 | if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode)) | |
3300 | flag = F2FS_GET_BLOCK_DEFAULT; | |
3301 | else | |
3302 | flag = F2FS_GET_BLOCK_PRE_AIO; | |
3303 | ||
b4d07a3e | 3304 | if (f2fs_has_inline_data(inode) || |
09cbfeaf | 3305 | (pos & PAGE_MASK) >= i_size_read(inode)) { |
0ef81833 | 3306 | f2fs_do_map_lock(sbi, flag, true); |
b4d07a3e JK |
3307 | locked = true; |
3308 | } | |
4c8ff709 | 3309 | |
b4d07a3e | 3310 | restart: |
2aadac08 | 3311 | /* check inline_data */ |
4d57b86d | 3312 | ipage = f2fs_get_node_page(sbi, inode->i_ino); |
2aadac08 JK |
3313 | if (IS_ERR(ipage)) { |
3314 | err = PTR_ERR(ipage); | |
3315 | goto unlock_out; | |
3316 | } | |
3317 | ||
3318 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3319 | ||
3320 | if (f2fs_has_inline_data(inode)) { | |
f2470371 | 3321 | if (pos + len <= MAX_INLINE_DATA(inode)) { |
4d57b86d | 3322 | f2fs_do_read_inline_data(page, ipage); |
91942321 | 3323 | set_inode_flag(inode, FI_DATA_EXIST); |
ab47036d | 3324 | if (inode->i_nlink) |
b763f3be | 3325 | set_page_private_inline(ipage); |
2aadac08 JK |
3326 | } else { |
3327 | err = f2fs_convert_inline_page(&dn, page); | |
3328 | if (err) | |
b4d07a3e JK |
3329 | goto out; |
3330 | if (dn.data_blkaddr == NULL_ADDR) | |
3331 | err = f2fs_get_block(&dn, index); | |
3332 | } | |
3333 | } else if (locked) { | |
3334 | err = f2fs_get_block(&dn, index); | |
3335 | } else { | |
3336 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
3337 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
3338 | } else { | |
b4d07a3e | 3339 | /* hole case */ |
4d57b86d | 3340 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); |
4da7bf5a | 3341 | if (err || dn.data_blkaddr == NULL_ADDR) { |
b4d07a3e | 3342 | f2fs_put_dnode(&dn); |
0ef81833 | 3343 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, |
59c9081b | 3344 | true); |
2866fb16 | 3345 | WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO); |
b4d07a3e JK |
3346 | locked = true; |
3347 | goto restart; | |
3348 | } | |
2aadac08 JK |
3349 | } |
3350 | } | |
b4d07a3e | 3351 | |
2aadac08 JK |
3352 | /* convert_inline_page can make node_changed */ |
3353 | *blk_addr = dn.data_blkaddr; | |
3354 | *node_changed = dn.node_changed; | |
b4d07a3e | 3355 | out: |
2aadac08 JK |
3356 | f2fs_put_dnode(&dn); |
3357 | unlock_out: | |
b4d07a3e | 3358 | if (locked) |
0ef81833 | 3359 | f2fs_do_map_lock(sbi, flag, false); |
2aadac08 JK |
3360 | return err; |
3361 | } | |
3362 | ||
3db1de0e DJ |
3363 | static int __find_data_block(struct inode *inode, pgoff_t index, |
3364 | block_t *blk_addr) | |
3365 | { | |
3366 | struct dnode_of_data dn; | |
3367 | struct page *ipage; | |
3368 | struct extent_info ei = {0, }; | |
3369 | int err = 0; | |
3370 | ||
3371 | ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); | |
3372 | if (IS_ERR(ipage)) | |
3373 | return PTR_ERR(ipage); | |
3374 | ||
3375 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3376 | ||
3377 | if (f2fs_lookup_extent_cache(inode, index, &ei)) { | |
3378 | dn.data_blkaddr = ei.blk + index - ei.fofs; | |
3379 | } else { | |
3380 | /* hole case */ | |
3381 | err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE); | |
3382 | if (err) { | |
3383 | dn.data_blkaddr = NULL_ADDR; | |
3384 | err = 0; | |
3385 | } | |
3386 | } | |
3387 | *blk_addr = dn.data_blkaddr; | |
3388 | f2fs_put_dnode(&dn); | |
3389 | return err; | |
3390 | } | |
3391 | ||
3392 | static int __reserve_data_block(struct inode *inode, pgoff_t index, | |
3393 | block_t *blk_addr, bool *node_changed) | |
3394 | { | |
3395 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
3396 | struct dnode_of_data dn; | |
3397 | struct page *ipage; | |
3398 | int err = 0; | |
3399 | ||
3400 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true); | |
3401 | ||
3402 | ipage = f2fs_get_node_page(sbi, inode->i_ino); | |
3403 | if (IS_ERR(ipage)) { | |
3404 | err = PTR_ERR(ipage); | |
3405 | goto unlock_out; | |
3406 | } | |
3407 | set_new_dnode(&dn, inode, ipage, ipage, 0); | |
3408 | ||
3409 | err = f2fs_get_block(&dn, index); | |
3410 | ||
3411 | *blk_addr = dn.data_blkaddr; | |
3412 | *node_changed = dn.node_changed; | |
3413 | f2fs_put_dnode(&dn); | |
3414 | ||
3415 | unlock_out: | |
3416 | f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false); | |
3417 | return err; | |
3418 | } | |
3419 | ||
3420 | static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi, | |
3421 | struct page *page, loff_t pos, unsigned int len, | |
3422 | block_t *blk_addr, bool *node_changed) | |
3423 | { | |
3424 | struct inode *inode = page->mapping->host; | |
3425 | struct inode *cow_inode = F2FS_I(inode)->cow_inode; | |
3426 | pgoff_t index = page->index; | |
3427 | int err = 0; | |
f8e2f32b | 3428 | block_t ori_blk_addr = NULL_ADDR; |
3db1de0e DJ |
3429 | |
3430 | /* If pos is beyond the end of file, reserve a new block in COW inode */ | |
3431 | if ((pos & PAGE_MASK) >= i_size_read(inode)) | |
f8e2f32b | 3432 | goto reserve_block; |
3db1de0e DJ |
3433 | |
3434 | /* Look for the block in COW inode first */ | |
3435 | err = __find_data_block(cow_inode, index, blk_addr); | |
3436 | if (err) | |
3437 | return err; | |
3438 | else if (*blk_addr != NULL_ADDR) | |
3439 | return 0; | |
3440 | ||
3441 | /* Look for the block in the original inode */ | |
3442 | err = __find_data_block(inode, index, &ori_blk_addr); | |
3443 | if (err) | |
3444 | return err; | |
3445 | ||
f8e2f32b | 3446 | reserve_block: |
3db1de0e DJ |
3447 | /* Finally, we should reserve a new block in COW inode for the update */ |
3448 | err = __reserve_data_block(cow_inode, index, blk_addr, node_changed); | |
3449 | if (err) | |
3450 | return err; | |
f8e2f32b | 3451 | inc_atomic_write_cnt(inode); |
3db1de0e DJ |
3452 | |
3453 | if (ori_blk_addr != NULL_ADDR) | |
3454 | *blk_addr = ori_blk_addr; | |
3455 | return 0; | |
3456 | } | |
3457 | ||
eb47b800 | 3458 | static int f2fs_write_begin(struct file *file, struct address_space *mapping, |
9d6b0cd7 | 3459 | loff_t pos, unsigned len, struct page **pagep, void **fsdata) |
eb47b800 JK |
3460 | { |
3461 | struct inode *inode = mapping->host; | |
4081363f | 3462 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
86531d6b | 3463 | struct page *page = NULL; |
09cbfeaf | 3464 | pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT; |
3db1de0e | 3465 | bool need_balance = false; |
2aadac08 | 3466 | block_t blkaddr = NULL_ADDR; |
eb47b800 JK |
3467 | int err = 0; |
3468 | ||
9d6b0cd7 | 3469 | trace_f2fs_write_begin(inode, pos, len); |
62aed044 | 3470 | |
00e09c0b CY |
3471 | if (!f2fs_is_checkpoint_ready(sbi)) { |
3472 | err = -ENOSPC; | |
4354994f | 3473 | goto fail; |
00e09c0b | 3474 | } |
4354994f | 3475 | |
5f727395 JK |
3476 | /* |
3477 | * We should check this at this moment to avoid deadlock on inode page | |
3478 | * and #0 page. The locking rule for inline_data conversion should be: | |
3479 | * lock_page(page #0) -> lock_page(inode_page) | |
3480 | */ | |
3481 | if (index != 0) { | |
3482 | err = f2fs_convert_inline_inode(inode); | |
3483 | if (err) | |
3484 | goto fail; | |
3485 | } | |
4c8ff709 CY |
3486 | |
3487 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3488 | if (f2fs_compressed_file(inode)) { | |
3489 | int ret; | |
3490 | ||
3491 | *fsdata = NULL; | |
3492 | ||
9b56adcf | 3493 | if (len == PAGE_SIZE && !(f2fs_is_atomic_file(inode))) |
7eab7a69 FC |
3494 | goto repeat; |
3495 | ||
4c8ff709 CY |
3496 | ret = f2fs_prepare_compress_overwrite(inode, pagep, |
3497 | index, fsdata); | |
3498 | if (ret < 0) { | |
3499 | err = ret; | |
3500 | goto fail; | |
3501 | } else if (ret) { | |
3502 | return 0; | |
3503 | } | |
3504 | } | |
3505 | #endif | |
3506 | ||
afcb7ca0 | 3507 | repeat: |
86d54795 JK |
3508 | /* |
3509 | * Do not use grab_cache_page_write_begin() to avoid deadlock due to | |
3510 | * wait_for_stable_page. Will wait that below with our IO control. | |
3511 | */ | |
01eccef7 | 3512 | page = f2fs_pagecache_get_page(mapping, index, |
86d54795 | 3513 | FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS); |
3aab8f82 CY |
3514 | if (!page) { |
3515 | err = -ENOMEM; | |
3516 | goto fail; | |
3517 | } | |
d5f66990 | 3518 | |
4c8ff709 CY |
3519 | /* TODO: cluster can be compressed due to race with .writepage */ |
3520 | ||
eb47b800 JK |
3521 | *pagep = page; |
3522 | ||
3db1de0e DJ |
3523 | if (f2fs_is_atomic_file(inode)) |
3524 | err = prepare_atomic_write_begin(sbi, page, pos, len, | |
3525 | &blkaddr, &need_balance); | |
3526 | else | |
3527 | err = prepare_write_begin(sbi, page, pos, len, | |
2aadac08 | 3528 | &blkaddr, &need_balance); |
9ba69cf9 | 3529 | if (err) |
2aadac08 | 3530 | goto fail; |
9ba69cf9 | 3531 | |
af033b2a CY |
3532 | if (need_balance && !IS_NOQUOTA(inode) && |
3533 | has_not_enough_free_secs(sbi, 0, 0)) { | |
2a340760 | 3534 | unlock_page(page); |
2c4db1a6 | 3535 | f2fs_balance_fs(sbi, true); |
2a340760 JK |
3536 | lock_page(page); |
3537 | if (page->mapping != mapping) { | |
3538 | /* The page got truncated from under us */ | |
3539 | f2fs_put_page(page, 1); | |
3540 | goto repeat; | |
3541 | } | |
3542 | } | |
3543 | ||
bae0ee7a | 3544 | f2fs_wait_on_page_writeback(page, DATA, false, true); |
b3d208f9 | 3545 | |
649d7df2 JK |
3546 | if (len == PAGE_SIZE || PageUptodate(page)) |
3547 | return 0; | |
eb47b800 | 3548 | |
95ae251f EB |
3549 | if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) && |
3550 | !f2fs_verity_in_progress(inode)) { | |
746e2403 YH |
3551 | zero_user_segment(page, len, PAGE_SIZE); |
3552 | return 0; | |
3553 | } | |
3554 | ||
2aadac08 | 3555 | if (blkaddr == NEW_ADDR) { |
09cbfeaf | 3556 | zero_user_segment(page, 0, PAGE_SIZE); |
649d7df2 | 3557 | SetPageUptodate(page); |
eb47b800 | 3558 | } else { |
93770ab7 CY |
3559 | if (!f2fs_is_valid_blkaddr(sbi, blkaddr, |
3560 | DATA_GENERIC_ENHANCE_READ)) { | |
10f966bb | 3561 | err = -EFSCORRUPTED; |
93770ab7 CY |
3562 | goto fail; |
3563 | } | |
b7973091 | 3564 | err = f2fs_submit_page_read(inode, page, blkaddr, 0, true); |
13ba41e3 | 3565 | if (err) |
78682f79 | 3566 | goto fail; |
d54c795b | 3567 | |
393ff91f | 3568 | lock_page(page); |
6bacf52f | 3569 | if (unlikely(page->mapping != mapping)) { |
afcb7ca0 JK |
3570 | f2fs_put_page(page, 1); |
3571 | goto repeat; | |
eb47b800 | 3572 | } |
1563ac75 CY |
3573 | if (unlikely(!PageUptodate(page))) { |
3574 | err = -EIO; | |
3575 | goto fail; | |
4375a336 | 3576 | } |
eb47b800 | 3577 | } |
eb47b800 | 3578 | return 0; |
9ba69cf9 | 3579 | |
3aab8f82 | 3580 | fail: |
86531d6b | 3581 | f2fs_put_page(page, 1); |
3e679dc7 | 3582 | f2fs_write_failed(inode, pos + len); |
3aab8f82 | 3583 | return err; |
eb47b800 JK |
3584 | } |
3585 | ||
a1dd3c13 JK |
3586 | static int f2fs_write_end(struct file *file, |
3587 | struct address_space *mapping, | |
3588 | loff_t pos, unsigned len, unsigned copied, | |
3589 | struct page *page, void *fsdata) | |
3590 | { | |
3591 | struct inode *inode = page->mapping->host; | |
3592 | ||
dfb2bf38 CY |
3593 | trace_f2fs_write_end(inode, pos, len, copied); |
3594 | ||
649d7df2 JK |
3595 | /* |
3596 | * This should be come from len == PAGE_SIZE, and we expect copied | |
3597 | * should be PAGE_SIZE. Otherwise, we treat it with zero copied and | |
3598 | * let generic_perform_write() try to copy data again through copied=0. | |
3599 | */ | |
3600 | if (!PageUptodate(page)) { | |
746e2403 | 3601 | if (unlikely(copied != len)) |
649d7df2 JK |
3602 | copied = 0; |
3603 | else | |
3604 | SetPageUptodate(page); | |
3605 | } | |
4c8ff709 CY |
3606 | |
3607 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3608 | /* overwrite compressed file */ | |
3609 | if (f2fs_compressed_file(inode) && fsdata) { | |
3610 | f2fs_compress_write_end(inode, fsdata, page->index, copied); | |
3611 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); | |
944dd22e CY |
3612 | |
3613 | if (pos + copied > i_size_read(inode) && | |
3614 | !f2fs_verity_in_progress(inode)) | |
3615 | f2fs_i_size_write(inode, pos + copied); | |
4c8ff709 CY |
3616 | return copied; |
3617 | } | |
3618 | #endif | |
3619 | ||
649d7df2 JK |
3620 | if (!copied) |
3621 | goto unlock_out; | |
3622 | ||
34ba94ba | 3623 | set_page_dirty(page); |
a1dd3c13 | 3624 | |
95ae251f | 3625 | if (pos + copied > i_size_read(inode) && |
3db1de0e | 3626 | !f2fs_verity_in_progress(inode)) { |
fc9581c8 | 3627 | f2fs_i_size_write(inode, pos + copied); |
3db1de0e DJ |
3628 | if (f2fs_is_atomic_file(inode)) |
3629 | f2fs_i_size_write(F2FS_I(inode)->cow_inode, | |
3630 | pos + copied); | |
3631 | } | |
649d7df2 | 3632 | unlock_out: |
3024c9a1 | 3633 | f2fs_put_page(page, 1); |
d0239e1b | 3634 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
a1dd3c13 JK |
3635 | return copied; |
3636 | } | |
3637 | ||
91503996 | 3638 | void f2fs_invalidate_folio(struct folio *folio, size_t offset, size_t length) |
eb47b800 | 3639 | { |
91503996 | 3640 | struct inode *inode = folio->mapping->host; |
487261f3 | 3641 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
a7ffdbe2 | 3642 | |
487261f3 | 3643 | if (inode->i_ino >= F2FS_ROOT_INO(sbi) && |
91503996 | 3644 | (offset || length != folio_size(folio))) |
a7ffdbe2 JK |
3645 | return; |
3646 | ||
91503996 | 3647 | if (folio_test_dirty(folio)) { |
933439c8 | 3648 | if (inode->i_ino == F2FS_META_INO(sbi)) { |
487261f3 | 3649 | dec_page_count(sbi, F2FS_DIRTY_META); |
933439c8 | 3650 | } else if (inode->i_ino == F2FS_NODE_INO(sbi)) { |
487261f3 | 3651 | dec_page_count(sbi, F2FS_DIRTY_NODES); |
933439c8 | 3652 | } else { |
487261f3 | 3653 | inode_dec_dirty_pages(inode); |
4d57b86d | 3654 | f2fs_remove_dirty_inode(inode); |
933439c8 | 3655 | } |
487261f3 | 3656 | } |
decd36b6 | 3657 | |
91503996 | 3658 | clear_page_private_gcing(&folio->page); |
2baf0781 | 3659 | |
2a64e303 CY |
3660 | if (test_opt(sbi, COMPRESS_CACHE) && |
3661 | inode->i_ino == F2FS_COMPRESS_INO(sbi)) | |
91503996 | 3662 | clear_page_private_data(&folio->page); |
6ce19aff | 3663 | |
91503996 | 3664 | folio_detach_private(folio); |
eb47b800 JK |
3665 | } |
3666 | ||
c26cd045 | 3667 | bool f2fs_release_folio(struct folio *folio, gfp_t wait) |
eb47b800 | 3668 | { |
c26cd045 MWO |
3669 | struct f2fs_sb_info *sbi; |
3670 | ||
3671 | /* If this is dirty folio, keep private data */ | |
3672 | if (folio_test_dirty(folio)) | |
3673 | return false; | |
f68daeeb | 3674 | |
c26cd045 MWO |
3675 | sbi = F2FS_M_SB(folio->mapping); |
3676 | if (test_opt(sbi, COMPRESS_CACHE)) { | |
3677 | struct inode *inode = folio->mapping->host; | |
6ce19aff | 3678 | |
c26cd045 MWO |
3679 | if (inode->i_ino == F2FS_COMPRESS_INO(sbi)) |
3680 | clear_page_private_data(&folio->page); | |
6ce19aff CY |
3681 | } |
3682 | ||
c26cd045 | 3683 | clear_page_private_gcing(&folio->page); |
b763f3be | 3684 | |
c26cd045 MWO |
3685 | folio_detach_private(folio); |
3686 | return true; | |
eb47b800 JK |
3687 | } |
3688 | ||
4f5e34f7 MWO |
3689 | static bool f2fs_dirty_data_folio(struct address_space *mapping, |
3690 | struct folio *folio) | |
eb47b800 | 3691 | { |
4f5e34f7 | 3692 | struct inode *inode = mapping->host; |
eb47b800 | 3693 | |
4f5e34f7 | 3694 | trace_f2fs_set_page_dirty(&folio->page, DATA); |
26c6b887 | 3695 | |
4f5e34f7 MWO |
3696 | if (!folio_test_uptodate(folio)) |
3697 | folio_mark_uptodate(folio); | |
3698 | BUG_ON(folio_test_swapcache(folio)); | |
34ba94ba | 3699 | |
4f5e34f7 MWO |
3700 | if (!folio_test_dirty(folio)) { |
3701 | filemap_dirty_folio(mapping, folio); | |
3702 | f2fs_update_dirty_folio(inode, folio); | |
3703 | return true; | |
eb47b800 | 3704 | } |
0fb5b2eb | 3705 | return false; |
eb47b800 JK |
3706 | } |
3707 | ||
c1c63387 CY |
3708 | |
3709 | static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block) | |
3710 | { | |
3711 | #ifdef CONFIG_F2FS_FS_COMPRESSION | |
3712 | struct dnode_of_data dn; | |
3713 | sector_t start_idx, blknr = 0; | |
3714 | int ret; | |
3715 | ||
3716 | start_idx = round_down(block, F2FS_I(inode)->i_cluster_size); | |
3717 | ||
3718 | set_new_dnode(&dn, inode, NULL, NULL, 0); | |
3719 | ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE); | |
3720 | if (ret) | |
3721 | return 0; | |
3722 | ||
3723 | if (dn.data_blkaddr != COMPRESS_ADDR) { | |
3724 | dn.ofs_in_node += block - start_idx; | |
3725 | blknr = f2fs_data_blkaddr(&dn); | |
3726 | if (!__is_valid_data_blkaddr(blknr)) | |
3727 | blknr = 0; | |
3728 | } | |
3729 | ||
3730 | f2fs_put_dnode(&dn); | |
c1c63387 CY |
3731 | return blknr; |
3732 | #else | |
250e84d7 | 3733 | return 0; |
c1c63387 CY |
3734 | #endif |
3735 | } | |
3736 | ||
3737 | ||
c01e54b7 JK |
3738 | static sector_t f2fs_bmap(struct address_space *mapping, sector_t block) |
3739 | { | |
454ae7e5 | 3740 | struct inode *inode = mapping->host; |
b79b0a31 | 3741 | sector_t blknr = 0; |
454ae7e5 | 3742 | |
1d373a0e | 3743 | if (f2fs_has_inline_data(inode)) |
b79b0a31 | 3744 | goto out; |
1d373a0e JK |
3745 | |
3746 | /* make sure allocating whole blocks */ | |
3747 | if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) | |
3748 | filemap_write_and_wait(mapping); | |
3749 | ||
4eda1682 | 3750 | /* Block number less than F2FS MAX BLOCKS */ |
6d1451bf | 3751 | if (unlikely(block >= max_file_blocks(inode))) |
4eda1682 | 3752 | goto out; |
c1c63387 | 3753 | |
4eda1682 DJ |
3754 | if (f2fs_compressed_file(inode)) { |
3755 | blknr = f2fs_bmap_compress(inode, block); | |
3756 | } else { | |
b876f4c9 JK |
3757 | struct f2fs_map_blocks map; |
3758 | ||
3759 | memset(&map, 0, sizeof(map)); | |
3760 | map.m_lblk = block; | |
3761 | map.m_len = 1; | |
3762 | map.m_next_pgofs = NULL; | |
3763 | map.m_seg_type = NO_CHECK_TYPE; | |
3764 | ||
3765 | if (!f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_BMAP)) | |
3766 | blknr = map.m_pblk; | |
4eda1682 | 3767 | } |
b79b0a31 CY |
3768 | out: |
3769 | trace_f2fs_bmap(inode, block, blknr); | |
3770 | return blknr; | |
429511cd CY |
3771 | } |
3772 | ||
4969c06a | 3773 | #ifdef CONFIG_SWAP |
859fca6b CY |
3774 | static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, |
3775 | unsigned int blkcnt) | |
3776 | { | |
3777 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
3778 | unsigned int blkofs; | |
3779 | unsigned int blk_per_sec = BLKS_PER_SEC(sbi); | |
3780 | unsigned int secidx = start_blk / blk_per_sec; | |
3781 | unsigned int end_sec = secidx + blkcnt / blk_per_sec; | |
3782 | int ret = 0; | |
3783 | ||
e4544b63 | 3784 | f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
edc6d01b | 3785 | filemap_invalidate_lock(inode->i_mapping); |
859fca6b CY |
3786 | |
3787 | set_inode_flag(inode, FI_ALIGNED_WRITE); | |
1018a546 | 3788 | set_inode_flag(inode, FI_OPU_WRITE); |
859fca6b CY |
3789 | |
3790 | for (; secidx < end_sec; secidx++) { | |
e4544b63 | 3791 | f2fs_down_write(&sbi->pin_sem); |
859fca6b CY |
3792 | |
3793 | f2fs_lock_op(sbi); | |
3794 | f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false); | |
3795 | f2fs_unlock_op(sbi); | |
3796 | ||
1018a546 | 3797 | set_inode_flag(inode, FI_SKIP_WRITES); |
859fca6b CY |
3798 | |
3799 | for (blkofs = 0; blkofs < blk_per_sec; blkofs++) { | |
3800 | struct page *page; | |
3801 | unsigned int blkidx = secidx * blk_per_sec + blkofs; | |
3802 | ||
3803 | page = f2fs_get_lock_data_page(inode, blkidx, true); | |
3804 | if (IS_ERR(page)) { | |
e4544b63 | 3805 | f2fs_up_write(&sbi->pin_sem); |
859fca6b CY |
3806 | ret = PTR_ERR(page); |
3807 | goto done; | |
3808 | } | |
3809 | ||
3810 | set_page_dirty(page); | |
3811 | f2fs_put_page(page, 1); | |
3812 | } | |
3813 | ||
1018a546 | 3814 | clear_inode_flag(inode, FI_SKIP_WRITES); |
859fca6b CY |
3815 | |
3816 | ret = filemap_fdatawrite(inode->i_mapping); | |
3817 | ||
e4544b63 | 3818 | f2fs_up_write(&sbi->pin_sem); |
859fca6b CY |
3819 | |
3820 | if (ret) | |
3821 | break; | |
3822 | } | |
3823 | ||
3824 | done: | |
1018a546 CY |
3825 | clear_inode_flag(inode, FI_SKIP_WRITES); |
3826 | clear_inode_flag(inode, FI_OPU_WRITE); | |
859fca6b CY |
3827 | clear_inode_flag(inode, FI_ALIGNED_WRITE); |
3828 | ||
edc6d01b | 3829 | filemap_invalidate_unlock(inode->i_mapping); |
e4544b63 | 3830 | f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
859fca6b CY |
3831 | |
3832 | return ret; | |
3833 | } | |
3834 | ||
0b8fc006 | 3835 | static int check_swap_activate(struct swap_info_struct *sis, |
af4b6b8e CY |
3836 | struct file *swap_file, sector_t *span) |
3837 | { | |
3838 | struct address_space *mapping = swap_file->f_mapping; | |
3839 | struct inode *inode = mapping->host; | |
36e4d958 | 3840 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
af4b6b8e CY |
3841 | sector_t cur_lblock; |
3842 | sector_t last_lblock; | |
3843 | sector_t pblock; | |
3844 | sector_t lowest_pblock = -1; | |
3845 | sector_t highest_pblock = 0; | |
3846 | int nr_extents = 0; | |
3847 | unsigned long nr_pblocks; | |
859fca6b CY |
3848 | unsigned int blks_per_sec = BLKS_PER_SEC(sbi); |
3849 | unsigned int sec_blks_mask = BLKS_PER_SEC(sbi) - 1; | |
ca298241 | 3850 | unsigned int not_aligned = 0; |
36e4d958 | 3851 | int ret = 0; |
af4b6b8e CY |
3852 | |
3853 | /* | |
3854 | * Map all the blocks into the extent list. This code doesn't try | |
3855 | * to be very smart. | |
3856 | */ | |
3857 | cur_lblock = 0; | |
6cbfcab5 | 3858 | last_lblock = bytes_to_blks(inode, i_size_read(inode)); |
af4b6b8e | 3859 | |
1da66103 | 3860 | while (cur_lblock < last_lblock && cur_lblock < sis->max) { |
b876f4c9 | 3861 | struct f2fs_map_blocks map; |
859fca6b | 3862 | retry: |
af4b6b8e CY |
3863 | cond_resched(); |
3864 | ||
b876f4c9 JK |
3865 | memset(&map, 0, sizeof(map)); |
3866 | map.m_lblk = cur_lblock; | |
36e4d958 | 3867 | map.m_len = last_lblock - cur_lblock; |
3868 | map.m_next_pgofs = NULL; | |
3869 | map.m_next_extent = NULL; | |
b876f4c9 | 3870 | map.m_seg_type = NO_CHECK_TYPE; |
36e4d958 | 3871 | map.m_may_create = false; |
af4b6b8e | 3872 | |
b876f4c9 | 3873 | ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP); |
af4b6b8e | 3874 | if (ret) |
36e4d958 | 3875 | goto out; |
af4b6b8e CY |
3876 | |
3877 | /* hole */ | |
36e4d958 | 3878 | if (!(map.m_flags & F2FS_MAP_FLAGS)) { |
833dcd35 | 3879 | f2fs_err(sbi, "Swapfile has holes"); |
f395183f | 3880 | ret = -EINVAL; |
36e4d958 | 3881 | goto out; |
3882 | } | |
af4b6b8e | 3883 | |
b876f4c9 JK |
3884 | pblock = map.m_pblk; |
3885 | nr_pblocks = map.m_len; | |
af4b6b8e | 3886 | |
859fca6b CY |
3887 | if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask || |
3888 | nr_pblocks & sec_blks_mask) { | |
ca298241 | 3889 | not_aligned++; |
36e4d958 | 3890 | |
859fca6b CY |
3891 | nr_pblocks = roundup(nr_pblocks, blks_per_sec); |
3892 | if (cur_lblock + nr_pblocks > sis->max) | |
3893 | nr_pblocks -= blks_per_sec; | |
3894 | ||
3895 | if (!nr_pblocks) { | |
3896 | /* this extent is last one */ | |
3897 | nr_pblocks = map.m_len; | |
3898 | f2fs_warn(sbi, "Swapfile: last extent is not aligned to section"); | |
3899 | goto next; | |
3900 | } | |
3901 | ||
3902 | ret = f2fs_migrate_blocks(inode, cur_lblock, | |
3903 | nr_pblocks); | |
3904 | if (ret) | |
3905 | goto out; | |
3906 | goto retry; | |
3907 | } | |
3908 | next: | |
af4b6b8e CY |
3909 | if (cur_lblock + nr_pblocks >= sis->max) |
3910 | nr_pblocks = sis->max - cur_lblock; | |
3911 | ||
3912 | if (cur_lblock) { /* exclude the header page */ | |
3913 | if (pblock < lowest_pblock) | |
3914 | lowest_pblock = pblock; | |
3915 | if (pblock + nr_pblocks - 1 > highest_pblock) | |
3916 | highest_pblock = pblock + nr_pblocks - 1; | |
3917 | } | |
3918 | ||
3919 | /* | |
3920 | * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks | |
3921 | */ | |
3922 | ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock); | |
3923 | if (ret < 0) | |
3924 | goto out; | |
3925 | nr_extents += ret; | |
3926 | cur_lblock += nr_pblocks; | |
3927 | } | |
3928 | ret = nr_extents; | |
3929 | *span = 1 + highest_pblock - lowest_pblock; | |
3930 | if (cur_lblock == 0) | |
3931 | cur_lblock = 1; /* force Empty message */ | |
3932 | sis->max = cur_lblock; | |
3933 | sis->pages = cur_lblock - 1; | |
3934 | sis->highest_bit = cur_lblock - 1; | |
3935 | out: | |
859fca6b CY |
3936 | if (not_aligned) |
3937 | f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(%u * N)", | |
3938 | not_aligned, blks_per_sec * F2FS_BLKSIZE); | |
af4b6b8e | 3939 | return ret; |
af4b6b8e CY |
3940 | } |
3941 | ||
4969c06a JK |
3942 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, |
3943 | sector_t *span) | |
3944 | { | |
3945 | struct inode *inode = file_inode(file); | |
3946 | int ret; | |
3947 | ||
3948 | if (!S_ISREG(inode->i_mode)) | |
3949 | return -EINVAL; | |
3950 | ||
3951 | if (f2fs_readonly(F2FS_I_SB(inode)->sb)) | |
3952 | return -EROFS; | |
3953 | ||
d927ccfc SK |
3954 | if (f2fs_lfs_mode(F2FS_I_SB(inode))) { |
3955 | f2fs_err(F2FS_I_SB(inode), | |
3956 | "Swapfile not supported in LFS mode"); | |
3957 | return -EINVAL; | |
3958 | } | |
3959 | ||
4969c06a JK |
3960 | ret = f2fs_convert_inline_inode(inode); |
3961 | if (ret) | |
3962 | return ret; | |
3963 | ||
78134d03 | 3964 | if (!f2fs_disable_compressed_file(inode)) |
4c8ff709 CY |
3965 | return -EINVAL; |
3966 | ||
0b979f1b CY |
3967 | f2fs_precache_extents(inode); |
3968 | ||
3e5e479a CY |
3969 | ret = check_swap_activate(sis, file, span); |
3970 | if (ret < 0) | |
4969c06a JK |
3971 | return ret; |
3972 | ||
3973 | set_inode_flag(inode, FI_PIN_FILE); | |
4969c06a | 3974 | f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
3e5e479a | 3975 | return ret; |
4969c06a JK |
3976 | } |
3977 | ||
3978 | static void f2fs_swap_deactivate(struct file *file) | |
3979 | { | |
3980 | struct inode *inode = file_inode(file); | |
3981 | ||
3982 | clear_inode_flag(inode, FI_PIN_FILE); | |
3983 | } | |
3984 | #else | |
3985 | static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, | |
3986 | sector_t *span) | |
3987 | { | |
3988 | return -EOPNOTSUPP; | |
3989 | } | |
3990 | ||
3991 | static void f2fs_swap_deactivate(struct file *file) | |
3992 | { | |
3993 | } | |
3994 | #endif | |
3995 | ||
eb47b800 | 3996 | const struct address_space_operations f2fs_dblock_aops = { |
be05584f | 3997 | .read_folio = f2fs_read_data_folio, |
23323196 | 3998 | .readahead = f2fs_readahead, |
eb47b800 JK |
3999 | .writepage = f2fs_write_data_page, |
4000 | .writepages = f2fs_write_data_pages, | |
4001 | .write_begin = f2fs_write_begin, | |
a1dd3c13 | 4002 | .write_end = f2fs_write_end, |
4f5e34f7 | 4003 | .dirty_folio = f2fs_dirty_data_folio, |
1d5b9bd6 | 4004 | .migrate_folio = filemap_migrate_folio, |
91503996 | 4005 | .invalidate_folio = f2fs_invalidate_folio, |
c26cd045 | 4006 | .release_folio = f2fs_release_folio, |
a1e09b03 | 4007 | .direct_IO = noop_direct_IO, |
c01e54b7 | 4008 | .bmap = f2fs_bmap, |
4969c06a JK |
4009 | .swap_activate = f2fs_swap_activate, |
4010 | .swap_deactivate = f2fs_swap_deactivate, | |
eb47b800 | 4011 | }; |
6dbb1796 | 4012 | |
5ec2d99d | 4013 | void f2fs_clear_page_cache_dirty_tag(struct page *page) |
aec2f729 CY |
4014 | { |
4015 | struct address_space *mapping = page_mapping(page); | |
4016 | unsigned long flags; | |
4017 | ||
4018 | xa_lock_irqsave(&mapping->i_pages, flags); | |
5ec2d99d | 4019 | __xa_clear_mark(&mapping->i_pages, page_index(page), |
aec2f729 CY |
4020 | PAGECACHE_TAG_DIRTY); |
4021 | xa_unlock_irqrestore(&mapping->i_pages, flags); | |
4022 | } | |
4023 | ||
6dbb1796 EB |
4024 | int __init f2fs_init_post_read_processing(void) |
4025 | { | |
95ae251f EB |
4026 | bio_post_read_ctx_cache = |
4027 | kmem_cache_create("f2fs_bio_post_read_ctx", | |
4028 | sizeof(struct bio_post_read_ctx), 0, 0, NULL); | |
6dbb1796 EB |
4029 | if (!bio_post_read_ctx_cache) |
4030 | goto fail; | |
4031 | bio_post_read_ctx_pool = | |
4032 | mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS, | |
4033 | bio_post_read_ctx_cache); | |
4034 | if (!bio_post_read_ctx_pool) | |
4035 | goto fail_free_cache; | |
4036 | return 0; | |
4037 | ||
4038 | fail_free_cache: | |
4039 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4040 | fail: | |
4041 | return -ENOMEM; | |
4042 | } | |
4043 | ||
0b20fcec | 4044 | void f2fs_destroy_post_read_processing(void) |
6dbb1796 EB |
4045 | { |
4046 | mempool_destroy(bio_post_read_ctx_pool); | |
4047 | kmem_cache_destroy(bio_post_read_ctx_cache); | |
4048 | } | |
0b20fcec | 4049 | |
4c8ff709 CY |
4050 | int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi) |
4051 | { | |
4052 | if (!f2fs_sb_has_encrypt(sbi) && | |
4053 | !f2fs_sb_has_verity(sbi) && | |
4054 | !f2fs_sb_has_compression(sbi)) | |
4055 | return 0; | |
4056 | ||
4057 | sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq", | |
4058 | WQ_UNBOUND | WQ_HIGHPRI, | |
4059 | num_online_cpus()); | |
4060 | if (!sbi->post_read_wq) | |
4061 | return -ENOMEM; | |
4062 | return 0; | |
4063 | } | |
4064 | ||
4065 | void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi) | |
4066 | { | |
4067 | if (sbi->post_read_wq) | |
4068 | destroy_workqueue(sbi->post_read_wq); | |
4069 | } | |
4070 | ||
0b20fcec CY |
4071 | int __init f2fs_init_bio_entry_cache(void) |
4072 | { | |
98510003 | 4073 | bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab", |
0b20fcec CY |
4074 | sizeof(struct bio_entry)); |
4075 | if (!bio_entry_slab) | |
4076 | return -ENOMEM; | |
4077 | return 0; | |
4078 | } | |
4079 | ||
f543805f | 4080 | void f2fs_destroy_bio_entry_cache(void) |
0b20fcec CY |
4081 | { |
4082 | kmem_cache_destroy(bio_entry_slab); | |
4083 | } | |
1517c1a7 EB |
4084 | |
4085 | static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, | |
4086 | unsigned int flags, struct iomap *iomap, | |
4087 | struct iomap *srcmap) | |
4088 | { | |
4089 | struct f2fs_map_blocks map = {}; | |
4090 | pgoff_t next_pgofs = 0; | |
4091 | int err; | |
4092 | ||
4093 | map.m_lblk = bytes_to_blks(inode, offset); | |
4094 | map.m_len = bytes_to_blks(inode, offset + length - 1) - map.m_lblk + 1; | |
4095 | map.m_next_pgofs = &next_pgofs; | |
4096 | map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint); | |
4097 | if (flags & IOMAP_WRITE) | |
4098 | map.m_may_create = true; | |
4099 | ||
4100 | err = f2fs_map_blocks(inode, &map, flags & IOMAP_WRITE, | |
4101 | F2FS_GET_BLOCK_DIO); | |
4102 | if (err) | |
4103 | return err; | |
4104 | ||
4105 | iomap->offset = blks_to_bytes(inode, map.m_lblk); | |
4106 | ||
8a2c77bc EB |
4107 | /* |
4108 | * When inline encryption is enabled, sometimes I/O to an encrypted file | |
4109 | * has to be broken up to guarantee DUN contiguity. Handle this by | |
4110 | * limiting the length of the mapping returned. | |
4111 | */ | |
4112 | map.m_len = fscrypt_limit_io_blocks(inode, map.m_lblk, map.m_len); | |
4113 | ||
1517c1a7 EB |
4114 | if (map.m_flags & (F2FS_MAP_MAPPED | F2FS_MAP_UNWRITTEN)) { |
4115 | iomap->length = blks_to_bytes(inode, map.m_len); | |
4116 | if (map.m_flags & F2FS_MAP_MAPPED) { | |
4117 | iomap->type = IOMAP_MAPPED; | |
4118 | iomap->flags |= IOMAP_F_MERGED; | |
4119 | } else { | |
4120 | iomap->type = IOMAP_UNWRITTEN; | |
4121 | } | |
4122 | if (WARN_ON_ONCE(!__is_valid_data_blkaddr(map.m_pblk))) | |
4123 | return -EINVAL; | |
4124 | ||
4125 | iomap->bdev = map.m_bdev; | |
4126 | iomap->addr = blks_to_bytes(inode, map.m_pblk); | |
4127 | } else { | |
4128 | iomap->length = blks_to_bytes(inode, next_pgofs) - | |
4129 | iomap->offset; | |
4130 | iomap->type = IOMAP_HOLE; | |
4131 | iomap->addr = IOMAP_NULL_ADDR; | |
4132 | } | |
4133 | ||
4134 | if (map.m_flags & F2FS_MAP_NEW) | |
4135 | iomap->flags |= IOMAP_F_NEW; | |
4136 | if ((inode->i_state & I_DIRTY_DATASYNC) || | |
4137 | offset + length > i_size_read(inode)) | |
4138 | iomap->flags |= IOMAP_F_DIRTY; | |
4139 | ||
4140 | return 0; | |
4141 | } | |
4142 | ||
4143 | const struct iomap_ops f2fs_iomap_ops = { | |
4144 | .iomap_begin = f2fs_iomap_begin, | |
4145 | }; |