1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
9 #include <linux/f2fs_fs.h>
10 #include <linux/buffer_head.h>
11 #include <linux/mpage.h>
12 #include <linux/writeback.h>
13 #include <linux/backing-dev.h>
14 #include <linux/pagevec.h>
15 #include <linux/blkdev.h>
16 #include <linux/bio.h>
17 #include <linux/blk-crypto.h>
18 #include <linux/swap.h>
19 #include <linux/prefetch.h>
20 #include <linux/uio.h>
21 #include <linux/cleancache.h>
22 #include <linux/sched/signal.h>
23 #include <linux/fiemap.h>
28 #include <trace/events/f2fs.h>
30 #define NUM_PREALLOC_POST_READ_CTXS 128
32 static struct kmem_cache *bio_post_read_ctx_cache;
33 static struct kmem_cache *bio_entry_slab;
34 static mempool_t *bio_post_read_ctx_pool;
35 static struct bio_set f2fs_bioset;
37 #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE
39 int __init f2fs_init_bioset(void)
41 if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE,
42 0, BIOSET_NEED_BVECS))
47 void f2fs_destroy_bioset(void)
49 bioset_exit(&f2fs_bioset);
52 static bool __is_cp_guaranteed(struct page *page)
54 struct address_space *mapping = page->mapping;
56 struct f2fs_sb_info *sbi;
61 inode = mapping->host;
62 sbi = F2FS_I_SB(inode);
64 if (inode->i_ino == F2FS_META_INO(sbi) ||
65 inode->i_ino == F2FS_NODE_INO(sbi) ||
66 S_ISDIR(inode->i_mode))
69 if (f2fs_is_compressed_page(page))
71 if ((S_ISREG(inode->i_mode) &&
72 (f2fs_is_atomic_file(inode) || IS_NOQUOTA(inode))) ||
73 page_private_gcing(page))
78 static enum count_type __read_io_type(struct page *page)
80 struct address_space *mapping = page_file_mapping(page);
83 struct inode *inode = mapping->host;
84 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
86 if (inode->i_ino == F2FS_META_INO(sbi))
89 if (inode->i_ino == F2FS_NODE_INO(sbi))
95 /* postprocessing steps for read bios */
96 enum bio_post_read_step {
97 #ifdef CONFIG_FS_ENCRYPTION
98 STEP_DECRYPT = 1 << 0,
100 STEP_DECRYPT = 0, /* compile out the decryption-related code */
102 #ifdef CONFIG_F2FS_FS_COMPRESSION
103 STEP_DECOMPRESS = 1 << 1,
105 STEP_DECOMPRESS = 0, /* compile out the decompression-related code */
107 #ifdef CONFIG_FS_VERITY
108 STEP_VERITY = 1 << 2,
110 STEP_VERITY = 0, /* compile out the verity-related code */
114 struct bio_post_read_ctx {
116 struct f2fs_sb_info *sbi;
117 struct work_struct work;
118 unsigned int enabled_steps;
121 static void f2fs_finish_read_bio(struct bio *bio)
124 struct bvec_iter_all iter_all;
127 * Update and unlock the bio's pagecache pages, and put the
128 * decompression context for any compressed pages.
130 bio_for_each_segment_all(bv, bio, iter_all) {
131 struct page *page = bv->bv_page;
133 if (f2fs_is_compressed_page(page)) {
135 f2fs_end_read_compressed_page(page, true, 0);
136 f2fs_put_page_dic(page);
140 /* PG_error was set if decryption or verity failed. */
141 if (bio->bi_status || PageError(page)) {
142 ClearPageUptodate(page);
143 /* will re-read again later */
144 ClearPageError(page);
146 SetPageUptodate(page);
148 dec_page_count(F2FS_P_SB(page), __read_io_type(page));
153 mempool_free(bio->bi_private, bio_post_read_ctx_pool);
157 static void f2fs_verify_bio(struct work_struct *work)
159 struct bio_post_read_ctx *ctx =
160 container_of(work, struct bio_post_read_ctx, work);
161 struct bio *bio = ctx->bio;
162 bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS);
165 * fsverity_verify_bio() may call readpages() again, and while verity
166 * will be disabled for this, decryption and/or decompression may still
167 * be needed, resulting in another bio_post_read_ctx being allocated.
168 * So to prevent deadlocks we need to release the current ctx to the
169 * mempool first. This assumes that verity is the last post-read step.
171 mempool_free(ctx, bio_post_read_ctx_pool);
172 bio->bi_private = NULL;
175 * Verify the bio's pages with fs-verity. Exclude compressed pages,
176 * as those were handled separately by f2fs_end_read_compressed_page().
178 if (may_have_compressed_pages) {
180 struct bvec_iter_all iter_all;
182 bio_for_each_segment_all(bv, bio, iter_all) {
183 struct page *page = bv->bv_page;
185 if (!f2fs_is_compressed_page(page) &&
186 !PageError(page) && !fsverity_verify_page(page))
190 fsverity_verify_bio(bio);
193 f2fs_finish_read_bio(bio);
197 * If the bio's data needs to be verified with fs-verity, then enqueue the
198 * verity work for the bio. Otherwise finish the bio now.
200 * Note that to avoid deadlocks, the verity work can't be done on the
201 * decryption/decompression workqueue. This is because verifying the data pages
202 * can involve reading verity metadata pages from the file, and these verity
203 * metadata pages may be encrypted and/or compressed.
205 static void f2fs_verify_and_finish_bio(struct bio *bio)
207 struct bio_post_read_ctx *ctx = bio->bi_private;
209 if (ctx && (ctx->enabled_steps & STEP_VERITY)) {
210 INIT_WORK(&ctx->work, f2fs_verify_bio);
211 fsverity_enqueue_verify_work(&ctx->work);
213 f2fs_finish_read_bio(bio);
218 * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last
219 * remaining page was read by @ctx->bio.
221 * Note that a bio may span clusters (even a mix of compressed and uncompressed
222 * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates
223 * that the bio includes at least one compressed page. The actual decompression
224 * is done on a per-cluster basis, not a per-bio basis.
226 static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx)
229 struct bvec_iter_all iter_all;
230 bool all_compressed = true;
231 block_t blkaddr = SECTOR_TO_BLOCK(ctx->bio->bi_iter.bi_sector);
233 bio_for_each_segment_all(bv, ctx->bio, iter_all) {
234 struct page *page = bv->bv_page;
236 /* PG_error was set if decryption failed. */
237 if (f2fs_is_compressed_page(page))
238 f2fs_end_read_compressed_page(page, PageError(page),
241 all_compressed = false;
247 * Optimization: if all the bio's pages are compressed, then scheduling
248 * the per-bio verity work is unnecessary, as verity will be fully
249 * handled at the compression cluster level.
252 ctx->enabled_steps &= ~STEP_VERITY;
255 static void f2fs_post_read_work(struct work_struct *work)
257 struct bio_post_read_ctx *ctx =
258 container_of(work, struct bio_post_read_ctx, work);
260 if (ctx->enabled_steps & STEP_DECRYPT)
261 fscrypt_decrypt_bio(ctx->bio);
263 if (ctx->enabled_steps & STEP_DECOMPRESS)
264 f2fs_handle_step_decompress(ctx);
266 f2fs_verify_and_finish_bio(ctx->bio);
269 static void f2fs_read_end_io(struct bio *bio)
271 struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio));
272 struct bio_post_read_ctx *ctx = bio->bi_private;
274 if (time_to_inject(sbi, FAULT_READ_IO)) {
275 f2fs_show_injection_info(sbi, FAULT_READ_IO);
276 bio->bi_status = BLK_STS_IOERR;
279 if (bio->bi_status) {
280 f2fs_finish_read_bio(bio);
284 if (ctx && (ctx->enabled_steps & (STEP_DECRYPT | STEP_DECOMPRESS))) {
285 INIT_WORK(&ctx->work, f2fs_post_read_work);
286 queue_work(ctx->sbi->post_read_wq, &ctx->work);
288 f2fs_verify_and_finish_bio(bio);
292 static void f2fs_write_end_io(struct bio *bio)
294 struct f2fs_sb_info *sbi = bio->bi_private;
295 struct bio_vec *bvec;
296 struct bvec_iter_all iter_all;
298 if (time_to_inject(sbi, FAULT_WRITE_IO)) {
299 f2fs_show_injection_info(sbi, FAULT_WRITE_IO);
300 bio->bi_status = BLK_STS_IOERR;
303 bio_for_each_segment_all(bvec, bio, iter_all) {
304 struct page *page = bvec->bv_page;
305 enum count_type type = WB_DATA_TYPE(page);
307 if (page_private_dummy(page)) {
308 clear_page_private_dummy(page);
310 mempool_free(page, sbi->write_io_dummy);
312 if (unlikely(bio->bi_status))
313 f2fs_stop_checkpoint(sbi, true);
317 fscrypt_finalize_bounce_page(&page);
319 #ifdef CONFIG_F2FS_FS_COMPRESSION
320 if (f2fs_is_compressed_page(page)) {
321 f2fs_compress_write_end_io(bio, page);
326 if (unlikely(bio->bi_status)) {
327 mapping_set_error(page->mapping, -EIO);
328 if (type == F2FS_WB_CP_DATA)
329 f2fs_stop_checkpoint(sbi, true);
332 f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
333 page->index != nid_of_node(page));
335 dec_page_count(sbi, type);
336 if (f2fs_in_warm_node_list(sbi, page))
337 f2fs_del_fsync_node_entry(sbi, page);
338 clear_page_private_gcing(page);
339 end_page_writeback(page);
341 if (!get_pages(sbi, F2FS_WB_CP_DATA) &&
342 wq_has_sleeper(&sbi->cp_wait))
343 wake_up(&sbi->cp_wait);
348 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
349 block_t blk_addr, struct bio *bio)
351 struct block_device *bdev = sbi->sb->s_bdev;
354 if (f2fs_is_multi_device(sbi)) {
355 for (i = 0; i < sbi->s_ndevs; i++) {
356 if (FDEV(i).start_blk <= blk_addr &&
357 FDEV(i).end_blk >= blk_addr) {
358 blk_addr -= FDEV(i).start_blk;
365 bio_set_dev(bio, bdev);
366 bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr);
371 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
375 if (!f2fs_is_multi_device(sbi))
378 for (i = 0; i < sbi->s_ndevs; i++)
379 if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr)
384 static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
386 struct f2fs_sb_info *sbi = fio->sbi;
389 bio = bio_alloc_bioset(GFP_NOIO, npages, &f2fs_bioset);
391 f2fs_target_device(sbi, fio->new_blkaddr, bio);
392 if (is_read_io(fio->op)) {
393 bio->bi_end_io = f2fs_read_end_io;
394 bio->bi_private = NULL;
396 bio->bi_end_io = f2fs_write_end_io;
397 bio->bi_private = sbi;
398 bio->bi_write_hint = f2fs_io_type_to_rw_hint(sbi,
399 fio->type, fio->temp);
402 wbc_init_bio(fio->io_wbc, bio);
407 static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode,
409 const struct f2fs_io_info *fio,
413 * The f2fs garbage collector sets ->encrypted_page when it wants to
414 * read/write raw data without encryption.
416 if (!fio || !fio->encrypted_page)
417 fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask);
420 static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode,
422 const struct f2fs_io_info *fio)
425 * The f2fs garbage collector sets ->encrypted_page when it wants to
426 * read/write raw data without encryption.
428 if (fio && fio->encrypted_page)
429 return !bio_has_crypt_ctx(bio);
431 return fscrypt_mergeable_bio(bio, inode, next_idx);
434 static inline void __submit_bio(struct f2fs_sb_info *sbi,
435 struct bio *bio, enum page_type type)
437 if (!is_read_io(bio_op(bio))) {
440 if (type != DATA && type != NODE)
443 if (f2fs_lfs_mode(sbi) && current->plug)
444 blk_finish_plug(current->plug);
446 if (!F2FS_IO_ALIGNED(sbi))
449 start = bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS;
450 start %= F2FS_IO_SIZE(sbi);
455 /* fill dummy pages */
456 for (; start < F2FS_IO_SIZE(sbi); start++) {
458 mempool_alloc(sbi->write_io_dummy,
459 GFP_NOIO | __GFP_NOFAIL);
460 f2fs_bug_on(sbi, !page);
464 zero_user_segment(page, 0, PAGE_SIZE);
465 set_page_private_dummy(page);
467 if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE)
471 * In the NODE case, we lose next block address chain. So, we
472 * need to do checkpoint in f2fs_sync_file.
475 set_sbi_flag(sbi, SBI_NEED_CP);
478 if (is_read_io(bio_op(bio)))
479 trace_f2fs_submit_read_bio(sbi->sb, type, bio);
481 trace_f2fs_submit_write_bio(sbi->sb, type, bio);
485 void f2fs_submit_bio(struct f2fs_sb_info *sbi,
486 struct bio *bio, enum page_type type)
488 __submit_bio(sbi, bio, type);
491 static void __attach_io_flag(struct f2fs_io_info *fio)
493 struct f2fs_sb_info *sbi = fio->sbi;
494 unsigned int temp_mask = (1 << NR_TEMP_TYPE) - 1;
495 unsigned int io_flag, fua_flag, meta_flag;
497 if (fio->type == DATA)
498 io_flag = sbi->data_io_flag;
499 else if (fio->type == NODE)
500 io_flag = sbi->node_io_flag;
504 fua_flag = io_flag & temp_mask;
505 meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask;
508 * data/node io flag bits per temp:
509 * REQ_META | REQ_FUA |
510 * 5 | 4 | 3 | 2 | 1 | 0 |
511 * Cold | Warm | Hot | Cold | Warm | Hot |
513 if ((1 << fio->temp) & meta_flag)
514 fio->op_flags |= REQ_META;
515 if ((1 << fio->temp) & fua_flag)
516 fio->op_flags |= REQ_FUA;
519 static void __submit_merged_bio(struct f2fs_bio_info *io)
521 struct f2fs_io_info *fio = &io->fio;
526 __attach_io_flag(fio);
527 bio_set_op_attrs(io->bio, fio->op, fio->op_flags);
529 if (is_read_io(fio->op))
530 trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio);
532 trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio);
534 __submit_bio(io->sbi, io->bio, fio->type);
538 static bool __has_merged_page(struct bio *bio, struct inode *inode,
539 struct page *page, nid_t ino)
541 struct bio_vec *bvec;
542 struct bvec_iter_all iter_all;
547 if (!inode && !page && !ino)
550 bio_for_each_segment_all(bvec, bio, iter_all) {
551 struct page *target = bvec->bv_page;
553 if (fscrypt_is_bounce_page(target)) {
554 target = fscrypt_pagecache_page(target);
558 if (f2fs_is_compressed_page(target)) {
559 target = f2fs_compress_control_page(target);
564 if (inode && inode == target->mapping->host)
566 if (page && page == target)
568 if (ino && ino == ino_of_node(target))
575 static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi,
576 enum page_type type, enum temp_type temp)
578 enum page_type btype = PAGE_TYPE_OF_BIO(type);
579 struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
581 down_write(&io->io_rwsem);
583 /* change META to META_FLUSH in the checkpoint procedure */
584 if (type >= META_FLUSH) {
585 io->fio.type = META_FLUSH;
586 io->fio.op = REQ_OP_WRITE;
587 io->fio.op_flags = REQ_META | REQ_PRIO | REQ_SYNC;
588 if (!test_opt(sbi, NOBARRIER))
589 io->fio.op_flags |= REQ_PREFLUSH | REQ_FUA;
591 __submit_merged_bio(io);
592 up_write(&io->io_rwsem);
595 static void __submit_merged_write_cond(struct f2fs_sb_info *sbi,
596 struct inode *inode, struct page *page,
597 nid_t ino, enum page_type type, bool force)
602 for (temp = HOT; temp < NR_TEMP_TYPE; temp++) {
604 enum page_type btype = PAGE_TYPE_OF_BIO(type);
605 struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
607 down_read(&io->io_rwsem);
608 ret = __has_merged_page(io->bio, inode, page, ino);
609 up_read(&io->io_rwsem);
612 __f2fs_submit_merged_write(sbi, type, temp);
614 /* TODO: use HOT temp only for meta pages now. */
620 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type)
622 __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true);
625 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
626 struct inode *inode, struct page *page,
627 nid_t ino, enum page_type type)
629 __submit_merged_write_cond(sbi, inode, page, ino, type, false);
632 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi)
634 f2fs_submit_merged_write(sbi, DATA);
635 f2fs_submit_merged_write(sbi, NODE);
636 f2fs_submit_merged_write(sbi, META);
640 * Fill the locked page with data located in the block address.
641 * A caller needs to unlock the page on failure.
643 int f2fs_submit_page_bio(struct f2fs_io_info *fio)
646 struct page *page = fio->encrypted_page ?
647 fio->encrypted_page : fio->page;
649 if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
650 fio->is_por ? META_POR : (__is_meta_io(fio) ?
651 META_GENERIC : DATA_GENERIC_ENHANCE)))
652 return -EFSCORRUPTED;
654 trace_f2fs_submit_page_bio(page, fio);
656 /* Allocate a new bio */
657 bio = __bio_alloc(fio, 1);
659 f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
660 fio->page->index, fio, GFP_NOIO);
662 if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
667 if (fio->io_wbc && !is_read_io(fio->op))
668 wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE);
670 __attach_io_flag(fio);
671 bio_set_op_attrs(bio, fio->op, fio->op_flags);
673 inc_page_count(fio->sbi, is_read_io(fio->op) ?
674 __read_io_type(page): WB_DATA_TYPE(fio->page));
676 __submit_bio(fio->sbi, bio, fio->type);
680 static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,
681 block_t last_blkaddr, block_t cur_blkaddr)
683 if (unlikely(sbi->max_io_bytes &&
684 bio->bi_iter.bi_size >= sbi->max_io_bytes))
686 if (last_blkaddr + 1 != cur_blkaddr)
688 return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL);
691 static bool io_type_is_mergeable(struct f2fs_bio_info *io,
692 struct f2fs_io_info *fio)
694 if (io->fio.op != fio->op)
696 return io->fio.op_flags == fio->op_flags;
699 static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,
700 struct f2fs_bio_info *io,
701 struct f2fs_io_info *fio,
702 block_t last_blkaddr,
705 if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) {
706 unsigned int filled_blocks =
707 F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size);
708 unsigned int io_size = F2FS_IO_SIZE(sbi);
709 unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt;
711 /* IOs in bio is aligned and left space of vectors is not enough */
712 if (!(filled_blocks % io_size) && left_vecs < io_size)
715 if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr))
717 return io_type_is_mergeable(io, fio);
720 static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio,
721 struct page *page, enum temp_type temp)
723 struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;
724 struct bio_entry *be;
726 be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS);
730 if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE)
733 down_write(&io->bio_list_lock);
734 list_add_tail(&be->list, &io->bio_list);
735 up_write(&io->bio_list_lock);
738 static void del_bio_entry(struct bio_entry *be)
741 kmem_cache_free(bio_entry_slab, be);
744 static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio,
747 struct f2fs_sb_info *sbi = fio->sbi;
752 for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) {
753 struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;
754 struct list_head *head = &io->bio_list;
755 struct bio_entry *be;
757 down_write(&io->bio_list_lock);
758 list_for_each_entry(be, head, list) {
764 f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio,
767 if (f2fs_crypt_mergeable_bio(*bio,
768 fio->page->mapping->host,
769 fio->page->index, fio) &&
770 bio_add_page(*bio, page, PAGE_SIZE, 0) ==
776 /* page can't be merged into bio; submit the bio */
778 __submit_bio(sbi, *bio, DATA);
781 up_write(&io->bio_list_lock);
792 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
793 struct bio **bio, struct page *page)
797 struct bio *target = bio ? *bio : NULL;
799 for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) {
800 struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;
801 struct list_head *head = &io->bio_list;
802 struct bio_entry *be;
804 if (list_empty(head))
807 down_read(&io->bio_list_lock);
808 list_for_each_entry(be, head, list) {
810 found = (target == be->bio);
812 found = __has_merged_page(be->bio, NULL,
817 up_read(&io->bio_list_lock);
824 down_write(&io->bio_list_lock);
825 list_for_each_entry(be, head, list) {
827 found = (target == be->bio);
829 found = __has_merged_page(be->bio, NULL,
837 up_write(&io->bio_list_lock);
841 __submit_bio(sbi, target, DATA);
848 int f2fs_merge_page_bio(struct f2fs_io_info *fio)
850 struct bio *bio = *fio->bio;
851 struct page *page = fio->encrypted_page ?
852 fio->encrypted_page : fio->page;
854 if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
855 __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC))
856 return -EFSCORRUPTED;
858 trace_f2fs_submit_page_bio(page, fio);
860 if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block,
862 f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL);
865 bio = __bio_alloc(fio, BIO_MAX_VECS);
866 __attach_io_flag(fio);
867 f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
868 fio->page->index, fio, GFP_NOIO);
869 bio_set_op_attrs(bio, fio->op, fio->op_flags);
871 add_bio_entry(fio->sbi, bio, page, fio->temp);
873 if (add_ipu_page(fio, &bio, page))
878 wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE);
880 inc_page_count(fio->sbi, WB_DATA_TYPE(page));
882 *fio->last_block = fio->new_blkaddr;
888 void f2fs_submit_page_write(struct f2fs_io_info *fio)
890 struct f2fs_sb_info *sbi = fio->sbi;
891 enum page_type btype = PAGE_TYPE_OF_BIO(fio->type);
892 struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp;
893 struct page *bio_page;
895 f2fs_bug_on(sbi, is_read_io(fio->op));
897 down_write(&io->io_rwsem);
900 spin_lock(&io->io_lock);
901 if (list_empty(&io->io_list)) {
902 spin_unlock(&io->io_lock);
905 fio = list_first_entry(&io->io_list,
906 struct f2fs_io_info, list);
907 list_del(&fio->list);
908 spin_unlock(&io->io_lock);
911 verify_fio_blkaddr(fio);
913 if (fio->encrypted_page)
914 bio_page = fio->encrypted_page;
915 else if (fio->compressed_page)
916 bio_page = fio->compressed_page;
918 bio_page = fio->page;
920 /* set submitted = true as a return value */
921 fio->submitted = true;
923 inc_page_count(sbi, WB_DATA_TYPE(bio_page));
926 (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio,
928 !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host,
929 bio_page->index, fio)))
930 __submit_merged_bio(io);
932 if (io->bio == NULL) {
933 if (F2FS_IO_ALIGNED(sbi) &&
934 (fio->type == DATA || fio->type == NODE) &&
935 fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
936 dec_page_count(sbi, WB_DATA_TYPE(bio_page));
940 io->bio = __bio_alloc(fio, BIO_MAX_VECS);
941 f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host,
942 bio_page->index, fio, GFP_NOIO);
946 if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) {
947 __submit_merged_bio(io);
952 wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE);
954 io->last_block_in_bio = fio->new_blkaddr;
956 trace_f2fs_submit_page_write(fio->page, fio);
961 if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
962 !f2fs_is_checkpoint_ready(sbi))
963 __submit_merged_bio(io);
964 up_write(&io->io_rwsem);
967 static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
968 unsigned nr_pages, unsigned op_flag,
969 pgoff_t first_idx, bool for_write)
971 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
973 struct bio_post_read_ctx *ctx;
974 unsigned int post_read_steps = 0;
976 bio = bio_alloc_bioset(for_write ? GFP_NOIO : GFP_KERNEL,
977 bio_max_segs(nr_pages), &f2fs_bioset);
979 return ERR_PTR(-ENOMEM);
981 f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS);
983 f2fs_target_device(sbi, blkaddr, bio);
984 bio->bi_end_io = f2fs_read_end_io;
985 bio_set_op_attrs(bio, REQ_OP_READ, op_flag);
987 if (fscrypt_inode_uses_fs_layer_crypto(inode))
988 post_read_steps |= STEP_DECRYPT;
990 if (f2fs_need_verity(inode, first_idx))
991 post_read_steps |= STEP_VERITY;
994 * STEP_DECOMPRESS is handled specially, since a compressed file might
995 * contain both compressed and uncompressed clusters. We'll allocate a
996 * bio_post_read_ctx if the file is compressed, but the caller is
997 * responsible for enabling STEP_DECOMPRESS if it's actually needed.
1000 if (post_read_steps || f2fs_compressed_file(inode)) {
1001 /* Due to the mempool, this never fails. */
1002 ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS);
1005 ctx->enabled_steps = post_read_steps;
1006 bio->bi_private = ctx;
1012 /* This can handle encryption stuffs */
1013 static int f2fs_submit_page_read(struct inode *inode, struct page *page,
1014 block_t blkaddr, int op_flags, bool for_write)
1016 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1019 bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags,
1020 page->index, for_write);
1022 return PTR_ERR(bio);
1024 /* wait for GCed page writeback via META_MAPPING */
1025 f2fs_wait_on_block_writeback(inode, blkaddr);
1027 if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
1031 ClearPageError(page);
1032 inc_page_count(sbi, F2FS_RD_DATA);
1033 f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
1034 __submit_bio(sbi, bio, DATA);
1038 static void __set_data_blkaddr(struct dnode_of_data *dn)
1040 struct f2fs_node *rn = F2FS_NODE(dn->node_page);
1044 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
1045 base = get_extra_isize(dn->inode);
1047 /* Get physical address of data block */
1048 addr_array = blkaddr_in_node(rn);
1049 addr_array[base + dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr);
1053 * Lock ordering for the change of data block address:
1056 * update block addresses in the node page
1058 void f2fs_set_data_blkaddr(struct dnode_of_data *dn)
1060 f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true);
1061 __set_data_blkaddr(dn);
1062 if (set_page_dirty(dn->node_page))
1063 dn->node_changed = true;
1066 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr)
1068 dn->data_blkaddr = blkaddr;
1069 f2fs_set_data_blkaddr(dn);
1070 f2fs_update_extent_cache(dn);
1073 /* dn->ofs_in_node will be returned with up-to-date last block pointer */
1074 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
1076 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1082 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
1084 if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count))))
1087 trace_f2fs_reserve_new_blocks(dn->inode, dn->nid,
1088 dn->ofs_in_node, count);
1090 f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true);
1092 for (; count > 0; dn->ofs_in_node++) {
1093 block_t blkaddr = f2fs_data_blkaddr(dn);
1095 if (blkaddr == NULL_ADDR) {
1096 dn->data_blkaddr = NEW_ADDR;
1097 __set_data_blkaddr(dn);
1102 if (set_page_dirty(dn->node_page))
1103 dn->node_changed = true;
1107 /* Should keep dn->ofs_in_node unchanged */
1108 int f2fs_reserve_new_block(struct dnode_of_data *dn)
1110 unsigned int ofs_in_node = dn->ofs_in_node;
1113 ret = f2fs_reserve_new_blocks(dn, 1);
1114 dn->ofs_in_node = ofs_in_node;
1118 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index)
1120 bool need_put = dn->inode_page ? false : true;
1123 err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE);
1127 if (dn->data_blkaddr == NULL_ADDR)
1128 err = f2fs_reserve_new_block(dn);
1129 if (err || need_put)
1134 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
1136 struct extent_info ei = {0, 0, 0};
1137 struct inode *inode = dn->inode;
1139 if (f2fs_lookup_extent_cache(inode, index, &ei)) {
1140 dn->data_blkaddr = ei.blk + index - ei.fofs;
1144 return f2fs_reserve_block(dn, index);
1147 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
1148 int op_flags, bool for_write)
1150 struct address_space *mapping = inode->i_mapping;
1151 struct dnode_of_data dn;
1153 struct extent_info ei = {0,0,0};
1156 page = f2fs_grab_cache_page(mapping, index, for_write);
1158 return ERR_PTR(-ENOMEM);
1160 if (f2fs_lookup_extent_cache(inode, index, &ei)) {
1161 dn.data_blkaddr = ei.blk + index - ei.fofs;
1162 if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
1163 DATA_GENERIC_ENHANCE_READ)) {
1164 err = -EFSCORRUPTED;
1170 set_new_dnode(&dn, inode, NULL, NULL, 0);
1171 err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
1174 f2fs_put_dnode(&dn);
1176 if (unlikely(dn.data_blkaddr == NULL_ADDR)) {
1180 if (dn.data_blkaddr != NEW_ADDR &&
1181 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
1183 DATA_GENERIC_ENHANCE)) {
1184 err = -EFSCORRUPTED;
1188 if (PageUptodate(page)) {
1194 * A new dentry page is allocated but not able to be written, since its
1195 * new inode page couldn't be allocated due to -ENOSPC.
1196 * In such the case, its blkaddr can be remained as NEW_ADDR.
1197 * see, f2fs_add_link -> f2fs_get_new_data_page ->
1198 * f2fs_init_inode_metadata.
1200 if (dn.data_blkaddr == NEW_ADDR) {
1201 zero_user_segment(page, 0, PAGE_SIZE);
1202 if (!PageUptodate(page))
1203 SetPageUptodate(page);
1208 err = f2fs_submit_page_read(inode, page, dn.data_blkaddr,
1209 op_flags, for_write);
1215 f2fs_put_page(page, 1);
1216 return ERR_PTR(err);
1219 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index)
1221 struct address_space *mapping = inode->i_mapping;
1224 page = find_get_page(mapping, index);
1225 if (page && PageUptodate(page))
1227 f2fs_put_page(page, 0);
1229 page = f2fs_get_read_data_page(inode, index, 0, false);
1233 if (PageUptodate(page))
1236 wait_on_page_locked(page);
1237 if (unlikely(!PageUptodate(page))) {
1238 f2fs_put_page(page, 0);
1239 return ERR_PTR(-EIO);
1245 * If it tries to access a hole, return an error.
1246 * Because, the callers, functions in dir.c and GC, should be able to know
1247 * whether this page exists or not.
1249 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
1252 struct address_space *mapping = inode->i_mapping;
1255 page = f2fs_get_read_data_page(inode, index, 0, for_write);
1259 /* wait for read completion */
1261 if (unlikely(page->mapping != mapping)) {
1262 f2fs_put_page(page, 1);
1265 if (unlikely(!PageUptodate(page))) {
1266 f2fs_put_page(page, 1);
1267 return ERR_PTR(-EIO);
1273 * Caller ensures that this data page is never allocated.
1274 * A new zero-filled data page is allocated in the page cache.
1276 * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and
1278 * Note that, ipage is set only by make_empty_dir, and if any error occur,
1279 * ipage should be released by this function.
1281 struct page *f2fs_get_new_data_page(struct inode *inode,
1282 struct page *ipage, pgoff_t index, bool new_i_size)
1284 struct address_space *mapping = inode->i_mapping;
1286 struct dnode_of_data dn;
1289 page = f2fs_grab_cache_page(mapping, index, true);
1292 * before exiting, we should make sure ipage will be released
1293 * if any error occur.
1295 f2fs_put_page(ipage, 1);
1296 return ERR_PTR(-ENOMEM);
1299 set_new_dnode(&dn, inode, ipage, NULL, 0);
1300 err = f2fs_reserve_block(&dn, index);
1302 f2fs_put_page(page, 1);
1303 return ERR_PTR(err);
1306 f2fs_put_dnode(&dn);
1308 if (PageUptodate(page))
1311 if (dn.data_blkaddr == NEW_ADDR) {
1312 zero_user_segment(page, 0, PAGE_SIZE);
1313 if (!PageUptodate(page))
1314 SetPageUptodate(page);
1316 f2fs_put_page(page, 1);
1318 /* if ipage exists, blkaddr should be NEW_ADDR */
1319 f2fs_bug_on(F2FS_I_SB(inode), ipage);
1320 page = f2fs_get_lock_data_page(inode, index, true);
1325 if (new_i_size && i_size_read(inode) <
1326 ((loff_t)(index + 1) << PAGE_SHIFT))
1327 f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT));
1331 static int __allocate_data_block(struct dnode_of_data *dn, int seg_type)
1333 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1334 struct f2fs_summary sum;
1335 struct node_info ni;
1336 block_t old_blkaddr;
1340 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
1343 err = f2fs_get_node_info(sbi, dn->nid, &ni);
1347 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1348 if (dn->data_blkaddr != NULL_ADDR)
1351 if (unlikely((err = inc_valid_block_count(sbi, dn->inode, &count))))
1355 set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version);
1356 old_blkaddr = dn->data_blkaddr;
1357 f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr,
1358 &sum, seg_type, NULL);
1359 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO) {
1360 invalidate_mapping_pages(META_MAPPING(sbi),
1361 old_blkaddr, old_blkaddr);
1362 f2fs_invalidate_compress_page(sbi, old_blkaddr);
1364 f2fs_update_data_blkaddr(dn, dn->data_blkaddr);
1367 * i_size will be updated by direct_IO. Otherwise, we'll get stale
1368 * data from unwritten block via dio_read.
1373 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
1375 struct inode *inode = file_inode(iocb->ki_filp);
1376 struct f2fs_map_blocks map;
1379 bool direct_io = iocb->ki_flags & IOCB_DIRECT;
1381 map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos);
1382 map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from));
1383 if (map.m_len > map.m_lblk)
1384 map.m_len -= map.m_lblk;
1388 map.m_next_pgofs = NULL;
1389 map.m_next_extent = NULL;
1390 map.m_seg_type = NO_CHECK_TYPE;
1391 map.m_may_create = true;
1394 map.m_seg_type = f2fs_rw_hint_to_seg_type(iocb->ki_hint);
1395 flag = f2fs_force_buffered_io(inode, iocb, from) ?
1396 F2FS_GET_BLOCK_PRE_AIO :
1397 F2FS_GET_BLOCK_PRE_DIO;
1400 if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) {
1401 err = f2fs_convert_inline_inode(inode);
1405 if (f2fs_has_inline_data(inode))
1408 flag = F2FS_GET_BLOCK_PRE_AIO;
1411 err = f2fs_map_blocks(inode, &map, 1, flag);
1412 if (map.m_len > 0 && err == -ENOSPC) {
1414 set_inode_flag(inode, FI_NO_PREALLOC);
1420 void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock)
1422 if (flag == F2FS_GET_BLOCK_PRE_AIO) {
1424 down_read(&sbi->node_change);
1426 up_read(&sbi->node_change);
1431 f2fs_unlock_op(sbi);
1436 * f2fs_map_blocks() tries to find or build mapping relationship which
1437 * maps continuous logical blocks to physical blocks, and return such
1438 * info via f2fs_map_blocks structure.
1440 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
1441 int create, int flag)
1443 unsigned int maxblocks = map->m_len;
1444 struct dnode_of_data dn;
1445 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1446 int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE;
1447 pgoff_t pgofs, end_offset, end;
1448 int err = 0, ofs = 1;
1449 unsigned int ofs_in_node, last_ofs_in_node;
1451 struct extent_info ei = {0,0,0};
1453 unsigned int start_pgofs;
1461 /* it only supports block size == page size */
1462 pgofs = (pgoff_t)map->m_lblk;
1463 end = pgofs + maxblocks;
1465 if (!create && f2fs_lookup_extent_cache(inode, pgofs, &ei)) {
1466 if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO &&
1470 map->m_pblk = ei.blk + pgofs - ei.fofs;
1471 map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgofs);
1472 map->m_flags = F2FS_MAP_MAPPED;
1473 if (map->m_next_extent)
1474 *map->m_next_extent = pgofs + map->m_len;
1476 /* for hardware encryption, but to avoid potential issue in future */
1477 if (flag == F2FS_GET_BLOCK_DIO)
1478 f2fs_wait_on_block_writeback_range(inode,
1479 map->m_pblk, map->m_len);
1484 if (map->m_may_create)
1485 f2fs_do_map_lock(sbi, flag, true);
1487 /* When reading holes, we need its node page */
1488 set_new_dnode(&dn, inode, NULL, NULL, 0);
1489 err = f2fs_get_dnode_of_data(&dn, pgofs, mode);
1491 if (flag == F2FS_GET_BLOCK_BMAP)
1493 if (err == -ENOENT) {
1495 if (map->m_next_pgofs)
1496 *map->m_next_pgofs =
1497 f2fs_get_next_page_offset(&dn, pgofs);
1498 if (map->m_next_extent)
1499 *map->m_next_extent =
1500 f2fs_get_next_page_offset(&dn, pgofs);
1505 start_pgofs = pgofs;
1507 last_ofs_in_node = ofs_in_node = dn.ofs_in_node;
1508 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1511 blkaddr = f2fs_data_blkaddr(&dn);
1513 if (__is_valid_data_blkaddr(blkaddr) &&
1514 !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) {
1515 err = -EFSCORRUPTED;
1519 if (__is_valid_data_blkaddr(blkaddr)) {
1520 /* use out-place-update for driect IO under LFS mode */
1521 if (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO &&
1522 map->m_may_create) {
1523 err = __allocate_data_block(&dn, map->m_seg_type);
1526 blkaddr = dn.data_blkaddr;
1527 set_inode_flag(inode, FI_APPEND_WRITE);
1531 if (unlikely(f2fs_cp_error(sbi))) {
1535 if (flag == F2FS_GET_BLOCK_PRE_AIO) {
1536 if (blkaddr == NULL_ADDR) {
1538 last_ofs_in_node = dn.ofs_in_node;
1541 WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO &&
1542 flag != F2FS_GET_BLOCK_DIO);
1543 err = __allocate_data_block(&dn,
1546 set_inode_flag(inode, FI_APPEND_WRITE);
1550 map->m_flags |= F2FS_MAP_NEW;
1551 blkaddr = dn.data_blkaddr;
1553 if (flag == F2FS_GET_BLOCK_BMAP) {
1557 if (flag == F2FS_GET_BLOCK_PRECACHE)
1559 if (flag == F2FS_GET_BLOCK_FIEMAP &&
1560 blkaddr == NULL_ADDR) {
1561 if (map->m_next_pgofs)
1562 *map->m_next_pgofs = pgofs + 1;
1565 if (flag != F2FS_GET_BLOCK_FIEMAP) {
1566 /* for defragment case */
1567 if (map->m_next_pgofs)
1568 *map->m_next_pgofs = pgofs + 1;
1574 if (flag == F2FS_GET_BLOCK_PRE_AIO)
1577 if (map->m_len == 0) {
1578 /* preallocated unwritten block should be mapped for fiemap. */
1579 if (blkaddr == NEW_ADDR)
1580 map->m_flags |= F2FS_MAP_UNWRITTEN;
1581 map->m_flags |= F2FS_MAP_MAPPED;
1583 map->m_pblk = blkaddr;
1585 } else if ((map->m_pblk != NEW_ADDR &&
1586 blkaddr == (map->m_pblk + ofs)) ||
1587 (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) ||
1588 flag == F2FS_GET_BLOCK_PRE_DIO) {
1599 /* preallocate blocks in batch for one dnode page */
1600 if (flag == F2FS_GET_BLOCK_PRE_AIO &&
1601 (pgofs == end || dn.ofs_in_node == end_offset)) {
1603 dn.ofs_in_node = ofs_in_node;
1604 err = f2fs_reserve_new_blocks(&dn, prealloc);
1608 map->m_len += dn.ofs_in_node - ofs_in_node;
1609 if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) {
1613 dn.ofs_in_node = end_offset;
1618 else if (dn.ofs_in_node < end_offset)
1621 if (flag == F2FS_GET_BLOCK_PRECACHE) {
1622 if (map->m_flags & F2FS_MAP_MAPPED) {
1623 unsigned int ofs = start_pgofs - map->m_lblk;
1625 f2fs_update_extent_cache_range(&dn,
1626 start_pgofs, map->m_pblk + ofs,
1631 f2fs_put_dnode(&dn);
1633 if (map->m_may_create) {
1634 f2fs_do_map_lock(sbi, flag, false);
1635 f2fs_balance_fs(sbi, dn.node_changed);
1641 /* for hardware encryption, but to avoid potential issue in future */
1642 if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED)
1643 f2fs_wait_on_block_writeback_range(inode,
1644 map->m_pblk, map->m_len);
1646 if (flag == F2FS_GET_BLOCK_PRECACHE) {
1647 if (map->m_flags & F2FS_MAP_MAPPED) {
1648 unsigned int ofs = start_pgofs - map->m_lblk;
1650 f2fs_update_extent_cache_range(&dn,
1651 start_pgofs, map->m_pblk + ofs,
1654 if (map->m_next_extent)
1655 *map->m_next_extent = pgofs + 1;
1657 f2fs_put_dnode(&dn);
1659 if (map->m_may_create) {
1660 f2fs_do_map_lock(sbi, flag, false);
1661 f2fs_balance_fs(sbi, dn.node_changed);
1664 trace_f2fs_map_blocks(inode, map, err);
1668 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len)
1670 struct f2fs_map_blocks map;
1674 if (pos + len > i_size_read(inode))
1677 map.m_lblk = F2FS_BYTES_TO_BLK(pos);
1678 map.m_next_pgofs = NULL;
1679 map.m_next_extent = NULL;
1680 map.m_seg_type = NO_CHECK_TYPE;
1681 map.m_may_create = false;
1682 last_lblk = F2FS_BLK_ALIGN(pos + len);
1684 while (map.m_lblk < last_lblk) {
1685 map.m_len = last_lblk - map.m_lblk;
1686 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
1687 if (err || map.m_len == 0)
1689 map.m_lblk += map.m_len;
1694 static inline u64 bytes_to_blks(struct inode *inode, u64 bytes)
1696 return (bytes >> inode->i_blkbits);
1699 static inline u64 blks_to_bytes(struct inode *inode, u64 blks)
1701 return (blks << inode->i_blkbits);
1704 static int __get_data_block(struct inode *inode, sector_t iblock,
1705 struct buffer_head *bh, int create, int flag,
1706 pgoff_t *next_pgofs, int seg_type, bool may_write)
1708 struct f2fs_map_blocks map;
1711 map.m_lblk = iblock;
1712 map.m_len = bytes_to_blks(inode, bh->b_size);
1713 map.m_next_pgofs = next_pgofs;
1714 map.m_next_extent = NULL;
1715 map.m_seg_type = seg_type;
1716 map.m_may_create = may_write;
1718 err = f2fs_map_blocks(inode, &map, create, flag);
1720 map_bh(bh, inode->i_sb, map.m_pblk);
1721 bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags;
1722 bh->b_size = blks_to_bytes(inode, map.m_len);
1727 static int get_data_block_dio_write(struct inode *inode, sector_t iblock,
1728 struct buffer_head *bh_result, int create)
1730 return __get_data_block(inode, iblock, bh_result, create,
1731 F2FS_GET_BLOCK_DIO, NULL,
1732 f2fs_rw_hint_to_seg_type(inode->i_write_hint),
1736 static int get_data_block_dio(struct inode *inode, sector_t iblock,
1737 struct buffer_head *bh_result, int create)
1739 return __get_data_block(inode, iblock, bh_result, create,
1740 F2FS_GET_BLOCK_DIO, NULL,
1741 f2fs_rw_hint_to_seg_type(inode->i_write_hint),
1745 static int f2fs_xattr_fiemap(struct inode *inode,
1746 struct fiemap_extent_info *fieinfo)
1748 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1750 struct node_info ni;
1751 __u64 phys = 0, len;
1753 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
1756 if (f2fs_has_inline_xattr(inode)) {
1759 page = f2fs_grab_cache_page(NODE_MAPPING(sbi),
1760 inode->i_ino, false);
1764 err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
1766 f2fs_put_page(page, 1);
1770 phys = blks_to_bytes(inode, ni.blk_addr);
1771 offset = offsetof(struct f2fs_inode, i_addr) +
1772 sizeof(__le32) * (DEF_ADDRS_PER_INODE -
1773 get_inline_xattr_addrs(inode));
1776 len = inline_xattr_size(inode);
1778 f2fs_put_page(page, 1);
1780 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED;
1783 flags |= FIEMAP_EXTENT_LAST;
1785 err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
1786 trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
1787 if (err || err == 1)
1792 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false);
1796 err = f2fs_get_node_info(sbi, xnid, &ni);
1798 f2fs_put_page(page, 1);
1802 phys = blks_to_bytes(inode, ni.blk_addr);
1803 len = inode->i_sb->s_blocksize;
1805 f2fs_put_page(page, 1);
1807 flags = FIEMAP_EXTENT_LAST;
1811 err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
1812 trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
1815 return (err < 0 ? err : 0);
1818 static loff_t max_inode_blocks(struct inode *inode)
1820 loff_t result = ADDRS_PER_INODE(inode);
1821 loff_t leaf_count = ADDRS_PER_BLOCK(inode);
1823 /* two direct node blocks */
1824 result += (leaf_count * 2);
1826 /* two indirect node blocks */
1827 leaf_count *= NIDS_PER_BLOCK;
1828 result += (leaf_count * 2);
1830 /* one double indirect node block */
1831 leaf_count *= NIDS_PER_BLOCK;
1832 result += leaf_count;
1837 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
1840 struct f2fs_map_blocks map;
1841 sector_t start_blk, last_blk;
1843 u64 logical = 0, phys = 0, size = 0;
1846 bool compr_cluster = false;
1847 unsigned int cluster_size = F2FS_I(inode)->i_cluster_size;
1850 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) {
1851 ret = f2fs_precache_extents(inode);
1856 ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR);
1862 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
1863 if (start > maxbytes) {
1868 if (len > maxbytes || (maxbytes - len) < start)
1869 len = maxbytes - start;
1871 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
1872 ret = f2fs_xattr_fiemap(inode, fieinfo);
1876 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
1877 ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);
1882 if (bytes_to_blks(inode, len) == 0)
1883 len = blks_to_bytes(inode, 1);
1885 start_blk = bytes_to_blks(inode, start);
1886 last_blk = bytes_to_blks(inode, start + len - 1);
1889 memset(&map, 0, sizeof(map));
1890 map.m_lblk = start_blk;
1891 map.m_len = bytes_to_blks(inode, len);
1892 map.m_next_pgofs = &next_pgofs;
1893 map.m_seg_type = NO_CHECK_TYPE;
1896 map.m_len = cluster_size - 1;
1898 ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP);
1903 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
1904 start_blk = next_pgofs;
1906 if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode,
1907 max_inode_blocks(inode)))
1910 flags |= FIEMAP_EXTENT_LAST;
1914 flags |= FIEMAP_EXTENT_MERGED;
1915 if (IS_ENCRYPTED(inode))
1916 flags |= FIEMAP_EXTENT_DATA_ENCRYPTED;
1918 ret = fiemap_fill_next_extent(fieinfo, logical,
1920 trace_f2fs_fiemap(inode, logical, phys, size, flags, ret);
1926 if (start_blk > last_blk)
1929 if (compr_cluster) {
1930 compr_cluster = false;
1933 logical = blks_to_bytes(inode, start_blk - 1);
1934 phys = blks_to_bytes(inode, map.m_pblk);
1935 size = blks_to_bytes(inode, cluster_size);
1937 flags |= FIEMAP_EXTENT_ENCODED;
1939 start_blk += cluster_size - 1;
1941 if (start_blk > last_blk)
1947 if (map.m_pblk == COMPRESS_ADDR) {
1948 compr_cluster = true;
1953 logical = blks_to_bytes(inode, start_blk);
1954 phys = blks_to_bytes(inode, map.m_pblk);
1955 size = blks_to_bytes(inode, map.m_len);
1957 if (map.m_flags & F2FS_MAP_UNWRITTEN)
1958 flags = FIEMAP_EXTENT_UNWRITTEN;
1960 start_blk += bytes_to_blks(inode, size);
1964 if (fatal_signal_pending(current))
1972 inode_unlock(inode);
1976 static inline loff_t f2fs_readpage_limit(struct inode *inode)
1978 if (IS_ENABLED(CONFIG_FS_VERITY) &&
1979 (IS_VERITY(inode) || f2fs_verity_in_progress(inode)))
1980 return inode->i_sb->s_maxbytes;
1982 return i_size_read(inode);
1985 static int f2fs_read_single_page(struct inode *inode, struct page *page,
1987 struct f2fs_map_blocks *map,
1988 struct bio **bio_ret,
1989 sector_t *last_block_in_bio,
1992 struct bio *bio = *bio_ret;
1993 const unsigned blocksize = blks_to_bytes(inode, 1);
1994 sector_t block_in_file;
1995 sector_t last_block;
1996 sector_t last_block_in_file;
2000 block_in_file = (sector_t)page_index(page);
2001 last_block = block_in_file + nr_pages;
2002 last_block_in_file = bytes_to_blks(inode,
2003 f2fs_readpage_limit(inode) + blocksize - 1);
2004 if (last_block > last_block_in_file)
2005 last_block = last_block_in_file;
2007 /* just zeroing out page which is beyond EOF */
2008 if (block_in_file >= last_block)
2011 * Map blocks using the previous result first.
2013 if ((map->m_flags & F2FS_MAP_MAPPED) &&
2014 block_in_file > map->m_lblk &&
2015 block_in_file < (map->m_lblk + map->m_len))
2019 * Then do more f2fs_map_blocks() calls until we are
2020 * done with this page.
2022 map->m_lblk = block_in_file;
2023 map->m_len = last_block - block_in_file;
2025 ret = f2fs_map_blocks(inode, map, 0, F2FS_GET_BLOCK_DEFAULT);
2029 if ((map->m_flags & F2FS_MAP_MAPPED)) {
2030 block_nr = map->m_pblk + block_in_file - map->m_lblk;
2031 SetPageMappedToDisk(page);
2033 if (!PageUptodate(page) && (!PageSwapCache(page) &&
2034 !cleancache_get_page(page))) {
2035 SetPageUptodate(page);
2039 if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
2040 DATA_GENERIC_ENHANCE_READ)) {
2041 ret = -EFSCORRUPTED;
2046 zero_user_segment(page, 0, PAGE_SIZE);
2047 if (f2fs_need_verity(inode, page->index) &&
2048 !fsverity_verify_page(page)) {
2052 if (!PageUptodate(page))
2053 SetPageUptodate(page);
2059 * This page will go to BIO. Do we need to send this
2062 if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio,
2063 *last_block_in_bio, block_nr) ||
2064 !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) {
2066 __submit_bio(F2FS_I_SB(inode), bio, DATA);
2070 bio = f2fs_grab_read_bio(inode, block_nr, nr_pages,
2071 is_readahead ? REQ_RAHEAD : 0, page->index,
2081 * If the page is under writeback, we need to wait for
2082 * its completion to see the correct decrypted data.
2084 f2fs_wait_on_block_writeback(inode, block_nr);
2086 if (bio_add_page(bio, page, blocksize, 0) < blocksize)
2087 goto submit_and_realloc;
2089 inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA);
2090 f2fs_update_iostat(F2FS_I_SB(inode), FS_DATA_READ_IO, F2FS_BLKSIZE);
2091 ClearPageError(page);
2092 *last_block_in_bio = block_nr;
2096 __submit_bio(F2FS_I_SB(inode), bio, DATA);
2105 #ifdef CONFIG_F2FS_FS_COMPRESSION
2106 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
2107 unsigned nr_pages, sector_t *last_block_in_bio,
2108 bool is_readahead, bool for_write)
2110 struct dnode_of_data dn;
2111 struct inode *inode = cc->inode;
2112 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2113 struct bio *bio = *bio_ret;
2114 unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size;
2115 sector_t last_block_in_file;
2116 const unsigned blocksize = blks_to_bytes(inode, 1);
2117 struct decompress_io_ctx *dic = NULL;
2121 f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc));
2123 last_block_in_file = bytes_to_blks(inode,
2124 f2fs_readpage_limit(inode) + blocksize - 1);
2126 /* get rid of pages beyond EOF */
2127 for (i = 0; i < cc->cluster_size; i++) {
2128 struct page *page = cc->rpages[i];
2132 if ((sector_t)page->index >= last_block_in_file) {
2133 zero_user_segment(page, 0, PAGE_SIZE);
2134 if (!PageUptodate(page))
2135 SetPageUptodate(page);
2136 } else if (!PageUptodate(page)) {
2140 cc->rpages[i] = NULL;
2144 /* we are done since all pages are beyond EOF */
2145 if (f2fs_cluster_is_empty(cc))
2148 set_new_dnode(&dn, inode, NULL, NULL, 0);
2149 ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE);
2153 f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR);
2155 for (i = 1; i < cc->cluster_size; i++) {
2158 blkaddr = data_blkaddr(dn.inode, dn.node_page,
2159 dn.ofs_in_node + i);
2161 if (!__is_valid_data_blkaddr(blkaddr))
2164 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) {
2171 /* nothing to decompress */
2172 if (cc->nr_cpages == 0) {
2177 dic = f2fs_alloc_dic(cc);
2183 for (i = 0; i < cc->nr_cpages; i++) {
2184 struct page *page = dic->cpages[i];
2186 struct bio_post_read_ctx *ctx;
2188 blkaddr = data_blkaddr(dn.inode, dn.node_page,
2189 dn.ofs_in_node + i + 1);
2191 f2fs_wait_on_block_writeback(inode, blkaddr);
2193 if (f2fs_load_compressed_page(sbi, page, blkaddr)) {
2194 if (atomic_dec_and_test(&dic->remaining_pages))
2195 f2fs_decompress_cluster(dic);
2199 if (bio && (!page_is_mergeable(sbi, bio,
2200 *last_block_in_bio, blkaddr) ||
2201 !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) {
2203 __submit_bio(sbi, bio, DATA);
2208 bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages,
2209 is_readahead ? REQ_RAHEAD : 0,
2210 page->index, for_write);
2213 f2fs_decompress_end_io(dic, ret);
2214 f2fs_put_dnode(&dn);
2220 if (bio_add_page(bio, page, blocksize, 0) < blocksize)
2221 goto submit_and_realloc;
2223 ctx = bio->bi_private;
2224 ctx->enabled_steps |= STEP_DECOMPRESS;
2225 refcount_inc(&dic->refcnt);
2227 inc_page_count(sbi, F2FS_RD_DATA);
2228 f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
2229 f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE);
2230 ClearPageError(page);
2231 *last_block_in_bio = blkaddr;
2234 f2fs_put_dnode(&dn);
2240 f2fs_put_dnode(&dn);
2242 for (i = 0; i < cc->cluster_size; i++) {
2243 if (cc->rpages[i]) {
2244 ClearPageUptodate(cc->rpages[i]);
2245 ClearPageError(cc->rpages[i]);
2246 unlock_page(cc->rpages[i]);
2255 * This function was originally taken from fs/mpage.c, and customized for f2fs.
2256 * Major change was from block_size == page_size in f2fs by default.
2258 static int f2fs_mpage_readpages(struct inode *inode,
2259 struct readahead_control *rac, struct page *page)
2261 struct bio *bio = NULL;
2262 sector_t last_block_in_bio = 0;
2263 struct f2fs_map_blocks map;
2264 #ifdef CONFIG_F2FS_FS_COMPRESSION
2265 struct compress_ctx cc = {
2267 .log_cluster_size = F2FS_I(inode)->i_log_cluster_size,
2268 .cluster_size = F2FS_I(inode)->i_cluster_size,
2269 .cluster_idx = NULL_CLUSTER,
2276 unsigned nr_pages = rac ? readahead_count(rac) : 1;
2277 unsigned max_nr_pages = nr_pages;
2284 map.m_next_pgofs = NULL;
2285 map.m_next_extent = NULL;
2286 map.m_seg_type = NO_CHECK_TYPE;
2287 map.m_may_create = false;
2289 for (; nr_pages; nr_pages--) {
2291 page = readahead_page(rac);
2292 prefetchw(&page->flags);
2295 #ifdef CONFIG_F2FS_FS_COMPRESSION
2296 if (f2fs_compressed_file(inode)) {
2297 /* there are remained comressed pages, submit them */
2298 if (!f2fs_cluster_can_merge_page(&cc, page->index)) {
2299 ret = f2fs_read_multi_pages(&cc, &bio,
2302 rac != NULL, false);
2303 f2fs_destroy_compress_ctx(&cc, false);
2305 goto set_error_page;
2307 ret = f2fs_is_compressed_cluster(inode, page->index);
2309 goto set_error_page;
2311 goto read_single_page;
2313 ret = f2fs_init_compress_ctx(&cc);
2315 goto set_error_page;
2317 f2fs_compress_ctx_add_page(&cc, page);
2324 ret = f2fs_read_single_page(inode, page, max_nr_pages, &map,
2325 &bio, &last_block_in_bio, rac);
2327 #ifdef CONFIG_F2FS_FS_COMPRESSION
2331 zero_user_segment(page, 0, PAGE_SIZE);
2334 #ifdef CONFIG_F2FS_FS_COMPRESSION
2340 #ifdef CONFIG_F2FS_FS_COMPRESSION
2341 if (f2fs_compressed_file(inode)) {
2343 if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) {
2344 ret = f2fs_read_multi_pages(&cc, &bio,
2347 rac != NULL, false);
2348 f2fs_destroy_compress_ctx(&cc, false);
2354 __submit_bio(F2FS_I_SB(inode), bio, DATA);
2358 static int f2fs_read_data_page(struct file *file, struct page *page)
2360 struct inode *inode = page_file_mapping(page)->host;
2363 trace_f2fs_readpage(page, DATA);
2365 if (!f2fs_is_compress_backend_ready(inode)) {
2370 /* If the file has inline data, try to read it directly */
2371 if (f2fs_has_inline_data(inode))
2372 ret = f2fs_read_inline_data(inode, page);
2374 ret = f2fs_mpage_readpages(inode, NULL, page);
2378 static void f2fs_readahead(struct readahead_control *rac)
2380 struct inode *inode = rac->mapping->host;
2382 trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac));
2384 if (!f2fs_is_compress_backend_ready(inode))
2387 /* If the file has inline data, skip readpages */
2388 if (f2fs_has_inline_data(inode))
2391 f2fs_mpage_readpages(inode, rac, NULL);
2394 int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
2396 struct inode *inode = fio->page->mapping->host;
2397 struct page *mpage, *page;
2398 gfp_t gfp_flags = GFP_NOFS;
2400 if (!f2fs_encrypted_file(inode))
2403 page = fio->compressed_page ? fio->compressed_page : fio->page;
2405 /* wait for GCed page writeback via META_MAPPING */
2406 f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
2408 if (fscrypt_inode_uses_inline_crypto(inode))
2412 fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page,
2413 PAGE_SIZE, 0, gfp_flags);
2414 if (IS_ERR(fio->encrypted_page)) {
2415 /* flush pending IOs and wait for a while in the ENOMEM case */
2416 if (PTR_ERR(fio->encrypted_page) == -ENOMEM) {
2417 f2fs_flush_merged_writes(fio->sbi);
2418 congestion_wait(BLK_RW_ASYNC, DEFAULT_IO_TIMEOUT);
2419 gfp_flags |= __GFP_NOFAIL;
2422 return PTR_ERR(fio->encrypted_page);
2425 mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr);
2427 if (PageUptodate(mpage))
2428 memcpy(page_address(mpage),
2429 page_address(fio->encrypted_page), PAGE_SIZE);
2430 f2fs_put_page(mpage, 1);
2435 static inline bool check_inplace_update_policy(struct inode *inode,
2436 struct f2fs_io_info *fio)
2438 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2439 unsigned int policy = SM_I(sbi)->ipu_policy;
2441 if (policy & (0x1 << F2FS_IPU_FORCE))
2443 if (policy & (0x1 << F2FS_IPU_SSR) && f2fs_need_SSR(sbi))
2445 if (policy & (0x1 << F2FS_IPU_UTIL) &&
2446 utilization(sbi) > SM_I(sbi)->min_ipu_util)
2448 if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && f2fs_need_SSR(sbi) &&
2449 utilization(sbi) > SM_I(sbi)->min_ipu_util)
2453 * IPU for rewrite async pages
2455 if (policy & (0x1 << F2FS_IPU_ASYNC) &&
2456 fio && fio->op == REQ_OP_WRITE &&
2457 !(fio->op_flags & REQ_SYNC) &&
2458 !IS_ENCRYPTED(inode))
2461 /* this is only set during fdatasync */
2462 if (policy & (0x1 << F2FS_IPU_FSYNC) &&
2463 is_inode_flag_set(inode, FI_NEED_IPU))
2466 if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
2467 !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr)))
2473 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio)
2475 if (f2fs_is_pinned_file(inode))
2478 /* if this is cold file, we should overwrite to avoid fragmentation */
2479 if (file_is_cold(inode))
2482 return check_inplace_update_policy(inode, fio);
2485 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio)
2487 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2489 if (f2fs_lfs_mode(sbi))
2491 if (S_ISDIR(inode->i_mode))
2493 if (IS_NOQUOTA(inode))
2495 if (f2fs_is_atomic_file(inode))
2498 if (page_private_gcing(fio->page))
2500 if (page_private_dummy(fio->page))
2502 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
2503 f2fs_is_checkpointed_data(sbi, fio->old_blkaddr)))
2509 static inline bool need_inplace_update(struct f2fs_io_info *fio)
2511 struct inode *inode = fio->page->mapping->host;
2513 if (f2fs_should_update_outplace(inode, fio))
2516 return f2fs_should_update_inplace(inode, fio);
2519 int f2fs_do_write_data_page(struct f2fs_io_info *fio)
2521 struct page *page = fio->page;
2522 struct inode *inode = page->mapping->host;
2523 struct dnode_of_data dn;
2524 struct extent_info ei = {0,0,0};
2525 struct node_info ni;
2526 bool ipu_force = false;
2529 set_new_dnode(&dn, inode, NULL, NULL, 0);
2530 if (need_inplace_update(fio) &&
2531 f2fs_lookup_extent_cache(inode, page->index, &ei)) {
2532 fio->old_blkaddr = ei.blk + page->index - ei.fofs;
2534 if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
2535 DATA_GENERIC_ENHANCE))
2536 return -EFSCORRUPTED;
2539 fio->need_lock = LOCK_DONE;
2543 /* Deadlock due to between page->lock and f2fs_lock_op */
2544 if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi))
2547 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
2551 fio->old_blkaddr = dn.data_blkaddr;
2553 /* This page is already truncated */
2554 if (fio->old_blkaddr == NULL_ADDR) {
2555 ClearPageUptodate(page);
2556 clear_page_private_gcing(page);
2560 if (__is_valid_data_blkaddr(fio->old_blkaddr) &&
2561 !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
2562 DATA_GENERIC_ENHANCE)) {
2563 err = -EFSCORRUPTED;
2567 * If current allocation needs SSR,
2568 * it had better in-place writes for updated data.
2571 (__is_valid_data_blkaddr(fio->old_blkaddr) &&
2572 need_inplace_update(fio))) {
2573 err = f2fs_encrypt_one_page(fio);
2577 set_page_writeback(page);
2578 ClearPageError(page);
2579 f2fs_put_dnode(&dn);
2580 if (fio->need_lock == LOCK_REQ)
2581 f2fs_unlock_op(fio->sbi);
2582 err = f2fs_inplace_write_data(fio);
2584 if (fscrypt_inode_uses_fs_layer_crypto(inode))
2585 fscrypt_finalize_bounce_page(&fio->encrypted_page);
2586 if (PageWriteback(page))
2587 end_page_writeback(page);
2589 set_inode_flag(inode, FI_UPDATE_WRITE);
2591 trace_f2fs_do_write_data_page(fio->page, IPU);
2595 if (fio->need_lock == LOCK_RETRY) {
2596 if (!f2fs_trylock_op(fio->sbi)) {
2600 fio->need_lock = LOCK_REQ;
2603 err = f2fs_get_node_info(fio->sbi, dn.nid, &ni);
2607 fio->version = ni.version;
2609 err = f2fs_encrypt_one_page(fio);
2613 set_page_writeback(page);
2614 ClearPageError(page);
2616 if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR)
2617 f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false);
2619 /* LFS mode write path */
2620 f2fs_outplace_write_data(&dn, fio);
2621 trace_f2fs_do_write_data_page(page, OPU);
2622 set_inode_flag(inode, FI_APPEND_WRITE);
2623 if (page->index == 0)
2624 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
2626 f2fs_put_dnode(&dn);
2628 if (fio->need_lock == LOCK_REQ)
2629 f2fs_unlock_op(fio->sbi);
2633 int f2fs_write_single_data_page(struct page *page, int *submitted,
2635 sector_t *last_block,
2636 struct writeback_control *wbc,
2637 enum iostat_type io_type,
2641 struct inode *inode = page->mapping->host;
2642 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2643 loff_t i_size = i_size_read(inode);
2644 const pgoff_t end_index = ((unsigned long long)i_size)
2646 loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT;
2647 unsigned offset = 0;
2648 bool need_balance_fs = false;
2650 struct f2fs_io_info fio = {
2652 .ino = inode->i_ino,
2655 .op_flags = wbc_to_write_flags(wbc),
2656 .old_blkaddr = NULL_ADDR,
2658 .encrypted_page = NULL,
2660 .compr_blocks = compr_blocks,
2661 .need_lock = LOCK_RETRY,
2665 .last_block = last_block,
2668 trace_f2fs_writepage(page, DATA);
2670 /* we should bypass data pages to proceed the kworkder jobs */
2671 if (unlikely(f2fs_cp_error(sbi))) {
2672 mapping_set_error(page->mapping, -EIO);
2674 * don't drop any dirty dentry pages for keeping lastest
2675 * directory structure.
2677 if (S_ISDIR(inode->i_mode))
2682 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
2685 if (page->index < end_index ||
2686 f2fs_verity_in_progress(inode) ||
2691 * If the offset is out-of-range of file size,
2692 * this page does not have to be written to disk.
2694 offset = i_size & (PAGE_SIZE - 1);
2695 if ((page->index >= end_index + 1) || !offset)
2698 zero_user_segment(page, offset, PAGE_SIZE);
2700 if (f2fs_is_drop_cache(inode))
2702 /* we should not write 0'th page having journal header */
2703 if (f2fs_is_volatile_file(inode) && (!page->index ||
2704 (!wbc->for_reclaim &&
2705 f2fs_available_free_memory(sbi, BASE_CHECK))))
2708 /* Dentry/quota blocks are controlled by checkpoint */
2709 if (S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) {
2711 * We need to wait for node_write to avoid block allocation during
2712 * checkpoint. This can only happen to quota writes which can cause
2713 * the below discard race condition.
2715 if (IS_NOQUOTA(inode))
2716 down_read(&sbi->node_write);
2718 fio.need_lock = LOCK_DONE;
2719 err = f2fs_do_write_data_page(&fio);
2721 if (IS_NOQUOTA(inode))
2722 up_read(&sbi->node_write);
2727 if (!wbc->for_reclaim)
2728 need_balance_fs = true;
2729 else if (has_not_enough_free_secs(sbi, 0, 0))
2732 set_inode_flag(inode, FI_HOT_DATA);
2735 if (f2fs_has_inline_data(inode)) {
2736 err = f2fs_write_inline_data(inode, page);
2741 if (err == -EAGAIN) {
2742 err = f2fs_do_write_data_page(&fio);
2743 if (err == -EAGAIN) {
2744 fio.need_lock = LOCK_REQ;
2745 err = f2fs_do_write_data_page(&fio);
2750 file_set_keep_isize(inode);
2752 spin_lock(&F2FS_I(inode)->i_size_lock);
2753 if (F2FS_I(inode)->last_disk_size < psize)
2754 F2FS_I(inode)->last_disk_size = psize;
2755 spin_unlock(&F2FS_I(inode)->i_size_lock);
2759 if (err && err != -ENOENT)
2763 inode_dec_dirty_pages(inode);
2765 ClearPageUptodate(page);
2766 clear_page_private_gcing(page);
2769 if (wbc->for_reclaim) {
2770 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA);
2771 clear_inode_flag(inode, FI_HOT_DATA);
2772 f2fs_remove_dirty_inode(inode);
2776 if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) &&
2777 !F2FS_I(inode)->cp_task && allow_balance)
2778 f2fs_balance_fs(sbi, need_balance_fs);
2780 if (unlikely(f2fs_cp_error(sbi))) {
2781 f2fs_submit_merged_write(sbi, DATA);
2782 f2fs_submit_merged_ipu_write(sbi, bio, NULL);
2787 *submitted = fio.submitted ? 1 : 0;
2792 redirty_page_for_writepage(wbc, page);
2794 * pageout() in MM traslates EAGAIN, so calls handle_write_error()
2795 * -> mapping_set_error() -> set_bit(AS_EIO, ...).
2796 * file_write_and_wait_range() will see EIO error, which is critical
2797 * to return value of fsync() followed by atomic_write failure to user.
2799 if (!err || wbc->for_reclaim)
2800 return AOP_WRITEPAGE_ACTIVATE;
2805 static int f2fs_write_data_page(struct page *page,
2806 struct writeback_control *wbc)
2808 #ifdef CONFIG_F2FS_FS_COMPRESSION
2809 struct inode *inode = page->mapping->host;
2811 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
2814 if (f2fs_compressed_file(inode)) {
2815 if (f2fs_is_compressed_cluster(inode, page->index)) {
2816 redirty_page_for_writepage(wbc, page);
2817 return AOP_WRITEPAGE_ACTIVATE;
2823 return f2fs_write_single_data_page(page, NULL, NULL, NULL,
2824 wbc, FS_DATA_IO, 0, true);
2828 * This function was copied from write_cche_pages from mm/page-writeback.c.
2829 * The major change is making write step of cold data page separately from
2830 * warm/hot data page.
2832 static int f2fs_write_cache_pages(struct address_space *mapping,
2833 struct writeback_control *wbc,
2834 enum iostat_type io_type)
2837 int done = 0, retry = 0;
2838 struct pagevec pvec;
2839 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
2840 struct bio *bio = NULL;
2841 sector_t last_block;
2842 #ifdef CONFIG_F2FS_FS_COMPRESSION
2843 struct inode *inode = mapping->host;
2844 struct compress_ctx cc = {
2846 .log_cluster_size = F2FS_I(inode)->i_log_cluster_size,
2847 .cluster_size = F2FS_I(inode)->i_cluster_size,
2848 .cluster_idx = NULL_CLUSTER,
2854 .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size,
2860 pgoff_t end; /* Inclusive */
2862 int range_whole = 0;
2868 pagevec_init(&pvec);
2870 if (get_dirty_pages(mapping->host) <=
2871 SM_I(F2FS_M_SB(mapping))->min_hot_blocks)
2872 set_inode_flag(mapping->host, FI_HOT_DATA);
2874 clear_inode_flag(mapping->host, FI_HOT_DATA);
2876 if (wbc->range_cyclic) {
2877 index = mapping->writeback_index; /* prev offset */
2880 index = wbc->range_start >> PAGE_SHIFT;
2881 end = wbc->range_end >> PAGE_SHIFT;
2882 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
2885 if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)
2886 tag = PAGECACHE_TAG_TOWRITE;
2888 tag = PAGECACHE_TAG_DIRTY;
2891 if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)
2892 tag_pages_for_writeback(mapping, index, end);
2894 while (!done && !retry && (index <= end)) {
2895 nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
2900 for (i = 0; i < nr_pages; i++) {
2901 struct page *page = pvec.pages[i];
2905 #ifdef CONFIG_F2FS_FS_COMPRESSION
2906 if (f2fs_compressed_file(inode)) {
2907 ret = f2fs_init_compress_ctx(&cc);
2913 if (!f2fs_cluster_can_merge_page(&cc,
2915 ret = f2fs_write_multi_pages(&cc,
2916 &submitted, wbc, io_type);
2922 if (unlikely(f2fs_cp_error(sbi)))
2925 if (f2fs_cluster_is_empty(&cc)) {
2926 void *fsdata = NULL;
2930 ret2 = f2fs_prepare_compress_overwrite(
2932 page->index, &fsdata);
2938 !f2fs_compress_write_end(inode,
2939 fsdata, page->index,
2949 /* give a priority to WB_SYNC threads */
2950 if (atomic_read(&sbi->wb_sync_req[DATA]) &&
2951 wbc->sync_mode == WB_SYNC_NONE) {
2955 #ifdef CONFIG_F2FS_FS_COMPRESSION
2958 done_index = page->index;
2962 if (unlikely(page->mapping != mapping)) {
2968 if (!PageDirty(page)) {
2969 /* someone wrote it for us */
2970 goto continue_unlock;
2973 if (PageWriteback(page)) {
2974 if (wbc->sync_mode != WB_SYNC_NONE)
2975 f2fs_wait_on_page_writeback(page,
2978 goto continue_unlock;
2981 if (!clear_page_dirty_for_io(page))
2982 goto continue_unlock;
2984 #ifdef CONFIG_F2FS_FS_COMPRESSION
2985 if (f2fs_compressed_file(inode)) {
2987 f2fs_compress_ctx_add_page(&cc, page);
2991 ret = f2fs_write_single_data_page(page, &submitted,
2992 &bio, &last_block, wbc, io_type,
2994 if (ret == AOP_WRITEPAGE_ACTIVATE)
2996 #ifdef CONFIG_F2FS_FS_COMPRESSION
2999 nwritten += submitted;
3000 wbc->nr_to_write -= submitted;
3002 if (unlikely(ret)) {
3004 * keep nr_to_write, since vfs uses this to
3005 * get # of written pages.
3007 if (ret == AOP_WRITEPAGE_ACTIVATE) {
3010 } else if (ret == -EAGAIN) {
3012 if (wbc->sync_mode == WB_SYNC_ALL) {
3014 congestion_wait(BLK_RW_ASYNC,
3015 DEFAULT_IO_TIMEOUT);
3020 done_index = page->index + 1;
3025 if (wbc->nr_to_write <= 0 &&
3026 wbc->sync_mode == WB_SYNC_NONE) {
3034 pagevec_release(&pvec);
3037 #ifdef CONFIG_F2FS_FS_COMPRESSION
3038 /* flush remained pages in compress cluster */
3039 if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) {
3040 ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type);
3041 nwritten += submitted;
3042 wbc->nr_to_write -= submitted;
3048 if (f2fs_compressed_file(inode))
3049 f2fs_destroy_compress_ctx(&cc, false);
3056 if (wbc->range_cyclic && !done)
3058 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
3059 mapping->writeback_index = done_index;
3062 f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
3064 /* submit cached bio of IPU write */
3066 f2fs_submit_merged_ipu_write(sbi, &bio, NULL);
3071 static inline bool __should_serialize_io(struct inode *inode,
3072 struct writeback_control *wbc)
3074 /* to avoid deadlock in path of data flush */
3075 if (F2FS_I(inode)->cp_task)
3078 if (!S_ISREG(inode->i_mode))
3080 if (IS_NOQUOTA(inode))
3083 if (f2fs_need_compress_data(inode))
3085 if (wbc->sync_mode != WB_SYNC_ALL)
3087 if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks)
3092 static int __f2fs_write_data_pages(struct address_space *mapping,
3093 struct writeback_control *wbc,
3094 enum iostat_type io_type)
3096 struct inode *inode = mapping->host;
3097 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3098 struct blk_plug plug;
3100 bool locked = false;
3102 /* deal with chardevs and other special file */
3103 if (!mapping->a_ops->writepage)
3106 /* skip writing if there is no dirty page in this inode */
3107 if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE)
3110 /* during POR, we don't need to trigger writepage at all. */
3111 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
3114 if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) &&
3115 wbc->sync_mode == WB_SYNC_NONE &&
3116 get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) &&
3117 f2fs_available_free_memory(sbi, DIRTY_DENTS))
3120 /* skip writing during file defragment */
3121 if (is_inode_flag_set(inode, FI_DO_DEFRAG))
3124 trace_f2fs_writepages(mapping->host, wbc, DATA);
3126 /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */
3127 if (wbc->sync_mode == WB_SYNC_ALL)
3128 atomic_inc(&sbi->wb_sync_req[DATA]);
3129 else if (atomic_read(&sbi->wb_sync_req[DATA]))
3132 if (__should_serialize_io(inode, wbc)) {
3133 mutex_lock(&sbi->writepages);
3137 blk_start_plug(&plug);
3138 ret = f2fs_write_cache_pages(mapping, wbc, io_type);
3139 blk_finish_plug(&plug);
3142 mutex_unlock(&sbi->writepages);
3144 if (wbc->sync_mode == WB_SYNC_ALL)
3145 atomic_dec(&sbi->wb_sync_req[DATA]);
3147 * if some pages were truncated, we cannot guarantee its mapping->host
3148 * to detect pending bios.
3151 f2fs_remove_dirty_inode(inode);
3155 wbc->pages_skipped += get_dirty_pages(inode);
3156 trace_f2fs_writepages(mapping->host, wbc, DATA);
3160 static int f2fs_write_data_pages(struct address_space *mapping,
3161 struct writeback_control *wbc)
3163 struct inode *inode = mapping->host;
3165 return __f2fs_write_data_pages(mapping, wbc,
3166 F2FS_I(inode)->cp_task == current ?
3167 FS_CP_DATA_IO : FS_DATA_IO);
3170 static void f2fs_write_failed(struct address_space *mapping, loff_t to)
3172 struct inode *inode = mapping->host;
3173 loff_t i_size = i_size_read(inode);
3175 if (IS_NOQUOTA(inode))
3178 /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */
3179 if (to > i_size && !f2fs_verity_in_progress(inode)) {
3180 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3181 down_write(&F2FS_I(inode)->i_mmap_sem);
3183 truncate_pagecache(inode, i_size);
3184 f2fs_truncate_blocks(inode, i_size, true);
3186 up_write(&F2FS_I(inode)->i_mmap_sem);
3187 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3191 static int prepare_write_begin(struct f2fs_sb_info *sbi,
3192 struct page *page, loff_t pos, unsigned len,
3193 block_t *blk_addr, bool *node_changed)
3195 struct inode *inode = page->mapping->host;
3196 pgoff_t index = page->index;
3197 struct dnode_of_data dn;
3199 bool locked = false;
3200 struct extent_info ei = {0,0,0};
3205 * we already allocated all the blocks, so we don't need to get
3206 * the block addresses when there is no need to fill the page.
3208 if (!f2fs_has_inline_data(inode) && len == PAGE_SIZE &&
3209 !is_inode_flag_set(inode, FI_NO_PREALLOC) &&
3210 !f2fs_verity_in_progress(inode))
3213 /* f2fs_lock_op avoids race between write CP and convert_inline_page */
3214 if (f2fs_has_inline_data(inode) && pos + len > MAX_INLINE_DATA(inode))
3215 flag = F2FS_GET_BLOCK_DEFAULT;
3217 flag = F2FS_GET_BLOCK_PRE_AIO;
3219 if (f2fs_has_inline_data(inode) ||
3220 (pos & PAGE_MASK) >= i_size_read(inode)) {
3221 f2fs_do_map_lock(sbi, flag, true);
3226 /* check inline_data */
3227 ipage = f2fs_get_node_page(sbi, inode->i_ino);
3228 if (IS_ERR(ipage)) {
3229 err = PTR_ERR(ipage);
3233 set_new_dnode(&dn, inode, ipage, ipage, 0);
3235 if (f2fs_has_inline_data(inode)) {
3236 if (pos + len <= MAX_INLINE_DATA(inode)) {
3237 f2fs_do_read_inline_data(page, ipage);
3238 set_inode_flag(inode, FI_DATA_EXIST);
3240 set_page_private_inline(ipage);
3242 err = f2fs_convert_inline_page(&dn, page);
3245 if (dn.data_blkaddr == NULL_ADDR)
3246 err = f2fs_get_block(&dn, index);
3248 } else if (locked) {
3249 err = f2fs_get_block(&dn, index);
3251 if (f2fs_lookup_extent_cache(inode, index, &ei)) {
3252 dn.data_blkaddr = ei.blk + index - ei.fofs;
3255 err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3256 if (err || dn.data_blkaddr == NULL_ADDR) {
3257 f2fs_put_dnode(&dn);
3258 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO,
3260 WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO);
3267 /* convert_inline_page can make node_changed */
3268 *blk_addr = dn.data_blkaddr;
3269 *node_changed = dn.node_changed;
3271 f2fs_put_dnode(&dn);
3274 f2fs_do_map_lock(sbi, flag, false);
3278 static int f2fs_write_begin(struct file *file, struct address_space *mapping,
3279 loff_t pos, unsigned len, unsigned flags,
3280 struct page **pagep, void **fsdata)
3282 struct inode *inode = mapping->host;
3283 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3284 struct page *page = NULL;
3285 pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT;
3286 bool need_balance = false, drop_atomic = false;
3287 block_t blkaddr = NULL_ADDR;
3290 trace_f2fs_write_begin(inode, pos, len, flags);
3292 if (!f2fs_is_checkpoint_ready(sbi)) {
3297 if ((f2fs_is_atomic_file(inode) &&
3298 !f2fs_available_free_memory(sbi, INMEM_PAGES)) ||
3299 is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
3306 * We should check this at this moment to avoid deadlock on inode page
3307 * and #0 page. The locking rule for inline_data conversion should be:
3308 * lock_page(page #0) -> lock_page(inode_page)
3311 err = f2fs_convert_inline_inode(inode);
3316 #ifdef CONFIG_F2FS_FS_COMPRESSION
3317 if (f2fs_compressed_file(inode)) {
3322 ret = f2fs_prepare_compress_overwrite(inode, pagep,
3335 * Do not use grab_cache_page_write_begin() to avoid deadlock due to
3336 * wait_for_stable_page. Will wait that below with our IO control.
3338 page = f2fs_pagecache_get_page(mapping, index,
3339 FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS);
3345 /* TODO: cluster can be compressed due to race with .writepage */
3349 err = prepare_write_begin(sbi, page, pos, len,
3350 &blkaddr, &need_balance);
3354 if (need_balance && !IS_NOQUOTA(inode) &&
3355 has_not_enough_free_secs(sbi, 0, 0)) {
3357 f2fs_balance_fs(sbi, true);
3359 if (page->mapping != mapping) {
3360 /* The page got truncated from under us */
3361 f2fs_put_page(page, 1);
3366 f2fs_wait_on_page_writeback(page, DATA, false, true);
3368 if (len == PAGE_SIZE || PageUptodate(page))
3371 if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) &&
3372 !f2fs_verity_in_progress(inode)) {
3373 zero_user_segment(page, len, PAGE_SIZE);
3377 if (blkaddr == NEW_ADDR) {
3378 zero_user_segment(page, 0, PAGE_SIZE);
3379 SetPageUptodate(page);
3381 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3382 DATA_GENERIC_ENHANCE_READ)) {
3383 err = -EFSCORRUPTED;
3386 err = f2fs_submit_page_read(inode, page, blkaddr, 0, true);
3391 if (unlikely(page->mapping != mapping)) {
3392 f2fs_put_page(page, 1);
3395 if (unlikely(!PageUptodate(page))) {
3403 f2fs_put_page(page, 1);
3404 f2fs_write_failed(mapping, pos + len);
3406 f2fs_drop_inmem_pages_all(sbi, false);
3410 static int f2fs_write_end(struct file *file,
3411 struct address_space *mapping,
3412 loff_t pos, unsigned len, unsigned copied,
3413 struct page *page, void *fsdata)
3415 struct inode *inode = page->mapping->host;
3417 trace_f2fs_write_end(inode, pos, len, copied);
3420 * This should be come from len == PAGE_SIZE, and we expect copied
3421 * should be PAGE_SIZE. Otherwise, we treat it with zero copied and
3422 * let generic_perform_write() try to copy data again through copied=0.
3424 if (!PageUptodate(page)) {
3425 if (unlikely(copied != len))
3428 SetPageUptodate(page);
3431 #ifdef CONFIG_F2FS_FS_COMPRESSION
3432 /* overwrite compressed file */
3433 if (f2fs_compressed_file(inode) && fsdata) {
3434 f2fs_compress_write_end(inode, fsdata, page->index, copied);
3435 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3437 if (pos + copied > i_size_read(inode) &&
3438 !f2fs_verity_in_progress(inode))
3439 f2fs_i_size_write(inode, pos + copied);
3447 set_page_dirty(page);
3449 if (pos + copied > i_size_read(inode) &&
3450 !f2fs_verity_in_progress(inode))
3451 f2fs_i_size_write(inode, pos + copied);
3453 f2fs_put_page(page, 1);
3454 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3458 static int check_direct_IO(struct inode *inode, struct iov_iter *iter,
3461 unsigned i_blkbits = READ_ONCE(inode->i_blkbits);
3462 unsigned blkbits = i_blkbits;
3463 unsigned blocksize_mask = (1 << blkbits) - 1;
3464 unsigned long align = offset | iov_iter_alignment(iter);
3465 struct block_device *bdev = inode->i_sb->s_bdev;
3467 if (iov_iter_rw(iter) == READ && offset >= i_size_read(inode))
3470 if (align & blocksize_mask) {
3472 blkbits = blksize_bits(bdev_logical_block_size(bdev));
3473 blocksize_mask = (1 << blkbits) - 1;
3474 if (align & blocksize_mask)
3481 static void f2fs_dio_end_io(struct bio *bio)
3483 struct f2fs_private_dio *dio = bio->bi_private;
3485 dec_page_count(F2FS_I_SB(dio->inode),
3486 dio->write ? F2FS_DIO_WRITE : F2FS_DIO_READ);
3488 bio->bi_private = dio->orig_private;
3489 bio->bi_end_io = dio->orig_end_io;
3496 static void f2fs_dio_submit_bio(struct bio *bio, struct inode *inode,
3499 struct f2fs_private_dio *dio;
3500 bool write = (bio_op(bio) == REQ_OP_WRITE);
3502 dio = f2fs_kzalloc(F2FS_I_SB(inode),
3503 sizeof(struct f2fs_private_dio), GFP_NOFS);
3508 dio->orig_end_io = bio->bi_end_io;
3509 dio->orig_private = bio->bi_private;
3512 bio->bi_end_io = f2fs_dio_end_io;
3513 bio->bi_private = dio;
3515 inc_page_count(F2FS_I_SB(inode),
3516 write ? F2FS_DIO_WRITE : F2FS_DIO_READ);
3521 bio->bi_status = BLK_STS_IOERR;
3525 static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
3527 struct address_space *mapping = iocb->ki_filp->f_mapping;
3528 struct inode *inode = mapping->host;
3529 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3530 struct f2fs_inode_info *fi = F2FS_I(inode);
3531 size_t count = iov_iter_count(iter);
3532 loff_t offset = iocb->ki_pos;
3533 int rw = iov_iter_rw(iter);
3535 enum rw_hint hint = iocb->ki_hint;
3536 int whint_mode = F2FS_OPTION(sbi).whint_mode;
3539 err = check_direct_IO(inode, iter, offset);
3541 return err < 0 ? err : 0;
3543 if (f2fs_force_buffered_io(inode, iocb, iter))
3546 do_opu = allow_outplace_dio(inode, iocb, iter);
3548 trace_f2fs_direct_IO_enter(inode, offset, count, rw);
3550 if (rw == WRITE && whint_mode == WHINT_MODE_OFF)
3551 iocb->ki_hint = WRITE_LIFE_NOT_SET;
3553 if (iocb->ki_flags & IOCB_NOWAIT) {
3554 if (!down_read_trylock(&fi->i_gc_rwsem[rw])) {
3555 iocb->ki_hint = hint;
3559 if (do_opu && !down_read_trylock(&fi->i_gc_rwsem[READ])) {
3560 up_read(&fi->i_gc_rwsem[rw]);
3561 iocb->ki_hint = hint;
3566 down_read(&fi->i_gc_rwsem[rw]);
3568 down_read(&fi->i_gc_rwsem[READ]);
3571 err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev,
3572 iter, rw == WRITE ? get_data_block_dio_write :
3573 get_data_block_dio, NULL, f2fs_dio_submit_bio,
3574 rw == WRITE ? DIO_LOCKING | DIO_SKIP_HOLES :
3578 up_read(&fi->i_gc_rwsem[READ]);
3580 up_read(&fi->i_gc_rwsem[rw]);
3583 if (whint_mode == WHINT_MODE_OFF)
3584 iocb->ki_hint = hint;
3586 f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO,
3589 set_inode_flag(inode, FI_UPDATE_WRITE);
3590 } else if (err == -EIOCBQUEUED) {
3591 f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_IO,
3592 count - iov_iter_count(iter));
3593 } else if (err < 0) {
3594 f2fs_write_failed(mapping, offset + count);
3598 f2fs_update_iostat(sbi, APP_DIRECT_READ_IO, err);
3599 else if (err == -EIOCBQUEUED)
3600 f2fs_update_iostat(F2FS_I_SB(inode), APP_DIRECT_READ_IO,
3601 count - iov_iter_count(iter));
3605 trace_f2fs_direct_IO_exit(inode, offset, count, rw, err);
3610 void f2fs_invalidate_page(struct page *page, unsigned int offset,
3611 unsigned int length)
3613 struct inode *inode = page->mapping->host;
3614 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3616 if (inode->i_ino >= F2FS_ROOT_INO(sbi) &&
3617 (offset % PAGE_SIZE || length != PAGE_SIZE))
3620 if (PageDirty(page)) {
3621 if (inode->i_ino == F2FS_META_INO(sbi)) {
3622 dec_page_count(sbi, F2FS_DIRTY_META);
3623 } else if (inode->i_ino == F2FS_NODE_INO(sbi)) {
3624 dec_page_count(sbi, F2FS_DIRTY_NODES);
3626 inode_dec_dirty_pages(inode);
3627 f2fs_remove_dirty_inode(inode);
3631 clear_page_private_gcing(page);
3633 if (test_opt(sbi, COMPRESS_CACHE)) {
3634 if (f2fs_compressed_file(inode))
3635 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
3636 if (inode->i_ino == F2FS_COMPRESS_INO(sbi))
3637 clear_page_private_data(page);
3640 if (page_private_atomic(page))
3641 return f2fs_drop_inmem_page(inode, page);
3643 detach_page_private(page);
3644 set_page_private(page, 0);
3647 int f2fs_release_page(struct page *page, gfp_t wait)
3649 /* If this is dirty page, keep PagePrivate */
3650 if (PageDirty(page))
3653 /* This is atomic written page, keep Private */
3654 if (page_private_atomic(page))
3657 if (test_opt(F2FS_P_SB(page), COMPRESS_CACHE)) {
3658 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
3659 struct inode *inode = page->mapping->host;
3661 if (f2fs_compressed_file(inode))
3662 f2fs_invalidate_compress_pages(sbi, inode->i_ino);
3663 if (inode->i_ino == F2FS_COMPRESS_INO(sbi))
3664 clear_page_private_data(page);
3667 clear_page_private_gcing(page);
3669 detach_page_private(page);
3670 set_page_private(page, 0);
3674 static int f2fs_set_data_page_dirty(struct page *page)
3676 struct inode *inode = page_file_mapping(page)->host;
3678 trace_f2fs_set_page_dirty(page, DATA);
3680 if (!PageUptodate(page))
3681 SetPageUptodate(page);
3682 if (PageSwapCache(page))
3683 return __set_page_dirty_nobuffers(page);
3685 if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) {
3686 if (!page_private_atomic(page)) {
3687 f2fs_register_inmem_page(inode, page);
3691 * Previously, this page has been registered, we just
3697 if (!PageDirty(page)) {
3698 __set_page_dirty_nobuffers(page);
3699 f2fs_update_dirty_page(inode, page);
3706 static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block)
3708 #ifdef CONFIG_F2FS_FS_COMPRESSION
3709 struct dnode_of_data dn;
3710 sector_t start_idx, blknr = 0;
3713 start_idx = round_down(block, F2FS_I(inode)->i_cluster_size);
3715 set_new_dnode(&dn, inode, NULL, NULL, 0);
3716 ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE);
3720 if (dn.data_blkaddr != COMPRESS_ADDR) {
3721 dn.ofs_in_node += block - start_idx;
3722 blknr = f2fs_data_blkaddr(&dn);
3723 if (!__is_valid_data_blkaddr(blknr))
3727 f2fs_put_dnode(&dn);
3735 static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
3737 struct inode *inode = mapping->host;
3740 if (f2fs_has_inline_data(inode))
3743 /* make sure allocating whole blocks */
3744 if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
3745 filemap_write_and_wait(mapping);
3747 /* Block number less than F2FS MAX BLOCKS */
3748 if (unlikely(block >= max_file_blocks(inode)))
3751 if (f2fs_compressed_file(inode)) {
3752 blknr = f2fs_bmap_compress(inode, block);
3754 struct f2fs_map_blocks map;
3756 memset(&map, 0, sizeof(map));
3759 map.m_next_pgofs = NULL;
3760 map.m_seg_type = NO_CHECK_TYPE;
3762 if (!f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_BMAP))
3766 trace_f2fs_bmap(inode, block, blknr);
3770 #ifdef CONFIG_MIGRATION
3771 #include <linux/migrate.h>
3773 int f2fs_migrate_page(struct address_space *mapping,
3774 struct page *newpage, struct page *page, enum migrate_mode mode)
3776 int rc, extra_count;
3777 struct f2fs_inode_info *fi = F2FS_I(mapping->host);
3778 bool atomic_written = page_private_atomic(page);
3780 BUG_ON(PageWriteback(page));
3782 /* migrating an atomic written page is safe with the inmem_lock hold */
3783 if (atomic_written) {
3784 if (mode != MIGRATE_SYNC)
3786 if (!mutex_trylock(&fi->inmem_lock))
3790 /* one extra reference was held for atomic_write page */
3791 extra_count = atomic_written ? 1 : 0;
3792 rc = migrate_page_move_mapping(mapping, newpage,
3794 if (rc != MIGRATEPAGE_SUCCESS) {
3796 mutex_unlock(&fi->inmem_lock);
3800 if (atomic_written) {
3801 struct inmem_pages *cur;
3803 list_for_each_entry(cur, &fi->inmem_pages, list)
3804 if (cur->page == page) {
3805 cur->page = newpage;
3808 mutex_unlock(&fi->inmem_lock);
3813 if (PagePrivate(page)) {
3814 set_page_private(newpage, page_private(page));
3815 SetPagePrivate(newpage);
3818 set_page_private(page, 0);
3819 ClearPagePrivate(page);
3823 if (mode != MIGRATE_SYNC_NO_COPY)
3824 migrate_page_copy(newpage, page);
3826 migrate_page_states(newpage, page);
3828 return MIGRATEPAGE_SUCCESS;
3833 static int f2fs_is_file_aligned(struct inode *inode)
3835 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3836 block_t main_blkaddr = SM_I(sbi)->main_blkaddr;
3838 block_t last_lblock;
3840 unsigned long nr_pblocks;
3841 unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
3842 unsigned int not_aligned = 0;
3846 last_lblock = bytes_to_blks(inode, i_size_read(inode));
3848 while (cur_lblock < last_lblock) {
3849 struct f2fs_map_blocks map;
3851 memset(&map, 0, sizeof(map));
3852 map.m_lblk = cur_lblock;
3853 map.m_len = last_lblock - cur_lblock;
3854 map.m_next_pgofs = NULL;
3855 map.m_next_extent = NULL;
3856 map.m_seg_type = NO_CHECK_TYPE;
3857 map.m_may_create = false;
3859 ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP);
3864 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
3865 f2fs_err(sbi, "Swapfile has holes");
3870 pblock = map.m_pblk;
3871 nr_pblocks = map.m_len;
3873 if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
3874 nr_pblocks & (blocks_per_sec - 1)) {
3875 if (f2fs_is_pinned_file(inode)) {
3876 f2fs_err(sbi, "Swapfile does not align to section");
3883 cur_lblock += nr_pblocks;
3886 f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
3892 static int check_swap_activate_fast(struct swap_info_struct *sis,
3893 struct file *swap_file, sector_t *span)
3895 struct address_space *mapping = swap_file->f_mapping;
3896 struct inode *inode = mapping->host;
3897 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3898 sector_t cur_lblock;
3899 sector_t last_lblock;
3901 sector_t lowest_pblock = -1;
3902 sector_t highest_pblock = 0;
3904 unsigned long nr_pblocks;
3905 unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
3906 unsigned int not_aligned = 0;
3910 * Map all the blocks into the extent list. This code doesn't try
3914 last_lblock = bytes_to_blks(inode, i_size_read(inode));
3916 while (cur_lblock < last_lblock && cur_lblock < sis->max) {
3917 struct f2fs_map_blocks map;
3921 memset(&map, 0, sizeof(map));
3922 map.m_lblk = cur_lblock;
3923 map.m_len = last_lblock - cur_lblock;
3924 map.m_next_pgofs = NULL;
3925 map.m_next_extent = NULL;
3926 map.m_seg_type = NO_CHECK_TYPE;
3927 map.m_may_create = false;
3929 ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP);
3934 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
3935 f2fs_err(sbi, "Swapfile has holes");
3940 pblock = map.m_pblk;
3941 nr_pblocks = map.m_len;
3943 if ((pblock - SM_I(sbi)->main_blkaddr) & (blocks_per_sec - 1) ||
3944 nr_pblocks & (blocks_per_sec - 1)) {
3945 if (f2fs_is_pinned_file(inode)) {
3946 f2fs_err(sbi, "Swapfile does not align to section");
3953 if (cur_lblock + nr_pblocks >= sis->max)
3954 nr_pblocks = sis->max - cur_lblock;
3956 if (cur_lblock) { /* exclude the header page */
3957 if (pblock < lowest_pblock)
3958 lowest_pblock = pblock;
3959 if (pblock + nr_pblocks - 1 > highest_pblock)
3960 highest_pblock = pblock + nr_pblocks - 1;
3964 * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks
3966 ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock);
3970 cur_lblock += nr_pblocks;
3973 *span = 1 + highest_pblock - lowest_pblock;
3974 if (cur_lblock == 0)
3975 cur_lblock = 1; /* force Empty message */
3976 sis->max = cur_lblock;
3977 sis->pages = cur_lblock - 1;
3978 sis->highest_bit = cur_lblock - 1;
3981 f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate()",
3987 /* Copied from generic_swapfile_activate() to check any holes */
3988 static int check_swap_activate(struct swap_info_struct *sis,
3989 struct file *swap_file, sector_t *span)
3991 struct address_space *mapping = swap_file->f_mapping;
3992 struct inode *inode = mapping->host;
3993 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3994 unsigned blocks_per_page;
3995 unsigned long page_no;
3996 sector_t probe_block;
3997 sector_t last_block;
3998 sector_t lowest_block = -1;
3999 sector_t highest_block = 0;
4003 if (PAGE_SIZE == F2FS_BLKSIZE)
4004 return check_swap_activate_fast(sis, swap_file, span);
4006 ret = f2fs_is_file_aligned(inode);
4010 blocks_per_page = bytes_to_blks(inode, PAGE_SIZE);
4013 * Map all the blocks into the extent list. This code doesn't try
4018 last_block = bytes_to_blks(inode, i_size_read(inode));
4019 while ((probe_block + blocks_per_page) <= last_block &&
4020 page_no < sis->max) {
4021 unsigned block_in_page;
4022 sector_t first_block;
4027 block = probe_block;
4028 ret = bmap(inode, &block);
4033 first_block = block;
4036 * It must be PAGE_SIZE aligned on-disk
4038 if (first_block & (blocks_per_page - 1)) {
4043 for (block_in_page = 1; block_in_page < blocks_per_page;
4046 block = probe_block + block_in_page;
4047 ret = bmap(inode, &block);
4053 if (block != first_block + block_in_page) {
4060 first_block >>= (PAGE_SHIFT - inode->i_blkbits);
4061 if (page_no) { /* exclude the header page */
4062 if (first_block < lowest_block)
4063 lowest_block = first_block;
4064 if (first_block > highest_block)
4065 highest_block = first_block;
4069 * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks
4071 ret = add_swap_extent(sis, page_no, 1, first_block);
4076 probe_block += blocks_per_page;
4081 *span = 1 + highest_block - lowest_block;
4083 page_no = 1; /* force Empty message */
4085 sis->pages = page_no - 1;
4086 sis->highest_bit = page_no - 1;
4090 f2fs_err(sbi, "Swapfile has holes");
4094 static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
4097 struct inode *inode = file_inode(file);
4100 if (!S_ISREG(inode->i_mode))
4103 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
4106 if (f2fs_lfs_mode(F2FS_I_SB(inode))) {
4107 f2fs_err(F2FS_I_SB(inode),
4108 "Swapfile not supported in LFS mode");
4112 ret = f2fs_convert_inline_inode(inode);
4116 if (!f2fs_disable_compressed_file(inode))
4119 f2fs_precache_extents(inode);
4121 ret = check_swap_activate(sis, file, span);
4125 set_inode_flag(inode, FI_PIN_FILE);
4126 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
4130 static void f2fs_swap_deactivate(struct file *file)
4132 struct inode *inode = file_inode(file);
4134 clear_inode_flag(inode, FI_PIN_FILE);
4137 static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
4143 static void f2fs_swap_deactivate(struct file *file)
4148 const struct address_space_operations f2fs_dblock_aops = {
4149 .readpage = f2fs_read_data_page,
4150 .readahead = f2fs_readahead,
4151 .writepage = f2fs_write_data_page,
4152 .writepages = f2fs_write_data_pages,
4153 .write_begin = f2fs_write_begin,
4154 .write_end = f2fs_write_end,
4155 .set_page_dirty = f2fs_set_data_page_dirty,
4156 .invalidatepage = f2fs_invalidate_page,
4157 .releasepage = f2fs_release_page,
4158 .direct_IO = f2fs_direct_IO,
4160 .swap_activate = f2fs_swap_activate,
4161 .swap_deactivate = f2fs_swap_deactivate,
4162 #ifdef CONFIG_MIGRATION
4163 .migratepage = f2fs_migrate_page,
4167 void f2fs_clear_page_cache_dirty_tag(struct page *page)
4169 struct address_space *mapping = page_mapping(page);
4170 unsigned long flags;
4172 xa_lock_irqsave(&mapping->i_pages, flags);
4173 __xa_clear_mark(&mapping->i_pages, page_index(page),
4174 PAGECACHE_TAG_DIRTY);
4175 xa_unlock_irqrestore(&mapping->i_pages, flags);
4178 int __init f2fs_init_post_read_processing(void)
4180 bio_post_read_ctx_cache =
4181 kmem_cache_create("f2fs_bio_post_read_ctx",
4182 sizeof(struct bio_post_read_ctx), 0, 0, NULL);
4183 if (!bio_post_read_ctx_cache)
4185 bio_post_read_ctx_pool =
4186 mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS,
4187 bio_post_read_ctx_cache);
4188 if (!bio_post_read_ctx_pool)
4189 goto fail_free_cache;
4193 kmem_cache_destroy(bio_post_read_ctx_cache);
4198 void f2fs_destroy_post_read_processing(void)
4200 mempool_destroy(bio_post_read_ctx_pool);
4201 kmem_cache_destroy(bio_post_read_ctx_cache);
4204 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi)
4206 if (!f2fs_sb_has_encrypt(sbi) &&
4207 !f2fs_sb_has_verity(sbi) &&
4208 !f2fs_sb_has_compression(sbi))
4211 sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq",
4212 WQ_UNBOUND | WQ_HIGHPRI,
4214 if (!sbi->post_read_wq)
4219 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi)
4221 if (sbi->post_read_wq)
4222 destroy_workqueue(sbi->post_read_wq);
4225 int __init f2fs_init_bio_entry_cache(void)
4227 bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab",
4228 sizeof(struct bio_entry));
4229 if (!bio_entry_slab)
4234 void f2fs_destroy_bio_entry_cache(void)
4236 kmem_cache_destroy(bio_entry_slab);