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/sched/mm.h>
12 #include <linux/mpage.h>
13 #include <linux/writeback.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/sched/signal.h>
22 #include <linux/fiemap.h>
23 #include <linux/iomap.h>
29 #include <trace/events/f2fs.h>
31 #define NUM_PREALLOC_POST_READ_CTXS 128
33 static struct kmem_cache *bio_post_read_ctx_cache;
34 static struct kmem_cache *bio_entry_slab;
35 static mempool_t *bio_post_read_ctx_pool;
36 static struct bio_set f2fs_bioset;
38 #define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE
40 int __init f2fs_init_bioset(void)
42 return bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE,
43 0, BIOSET_NEED_BVECS);
46 void f2fs_destroy_bioset(void)
48 bioset_exit(&f2fs_bioset);
51 bool f2fs_is_cp_guaranteed(struct page *page)
53 struct address_space *mapping = page->mapping;
55 struct f2fs_sb_info *sbi;
60 inode = mapping->host;
61 sbi = F2FS_I_SB(inode);
63 if (inode->i_ino == F2FS_META_INO(sbi) ||
64 inode->i_ino == F2FS_NODE_INO(sbi) ||
65 S_ISDIR(inode->i_mode))
68 if ((S_ISREG(inode->i_mode) && IS_NOQUOTA(inode)) ||
69 page_private_gcing(page))
74 static enum count_type __read_io_type(struct page *page)
76 struct address_space *mapping = page_file_mapping(page);
79 struct inode *inode = mapping->host;
80 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
82 if (inode->i_ino == F2FS_META_INO(sbi))
85 if (inode->i_ino == F2FS_NODE_INO(sbi))
91 /* postprocessing steps for read bios */
92 enum bio_post_read_step {
93 #ifdef CONFIG_FS_ENCRYPTION
94 STEP_DECRYPT = BIT(0),
96 STEP_DECRYPT = 0, /* compile out the decryption-related code */
98 #ifdef CONFIG_F2FS_FS_COMPRESSION
99 STEP_DECOMPRESS = BIT(1),
101 STEP_DECOMPRESS = 0, /* compile out the decompression-related code */
103 #ifdef CONFIG_FS_VERITY
104 STEP_VERITY = BIT(2),
106 STEP_VERITY = 0, /* compile out the verity-related code */
110 struct bio_post_read_ctx {
112 struct f2fs_sb_info *sbi;
113 struct work_struct work;
114 unsigned int enabled_steps;
116 * decompression_attempted keeps track of whether
117 * f2fs_end_read_compressed_page() has been called on the pages in the
118 * bio that belong to a compressed cluster yet.
120 bool decompression_attempted;
125 * Update and unlock a bio's pages, and free the bio.
127 * This marks pages up-to-date only if there was no error in the bio (I/O error,
128 * decryption error, or verity error), as indicated by bio->bi_status.
130 * "Compressed pages" (pagecache pages backed by a compressed cluster on-disk)
131 * aren't marked up-to-date here, as decompression is done on a per-compression-
132 * cluster basis rather than a per-bio basis. Instead, we only must do two
133 * things for each compressed page here: call f2fs_end_read_compressed_page()
134 * with failed=true if an error occurred before it would have normally gotten
135 * called (i.e., I/O error or decryption error, but *not* verity error), and
136 * release the bio's reference to the decompress_io_ctx of the page's cluster.
138 static void f2fs_finish_read_bio(struct bio *bio, bool in_task)
141 struct bvec_iter_all iter_all;
142 struct bio_post_read_ctx *ctx = bio->bi_private;
144 bio_for_each_segment_all(bv, bio, iter_all) {
145 struct page *page = bv->bv_page;
147 if (f2fs_is_compressed_page(page)) {
148 if (ctx && !ctx->decompression_attempted)
149 f2fs_end_read_compressed_page(page, true, 0,
151 f2fs_put_page_dic(page, in_task);
156 ClearPageUptodate(page);
158 SetPageUptodate(page);
159 dec_page_count(F2FS_P_SB(page), __read_io_type(page));
164 mempool_free(ctx, bio_post_read_ctx_pool);
168 static void f2fs_verify_bio(struct work_struct *work)
170 struct bio_post_read_ctx *ctx =
171 container_of(work, struct bio_post_read_ctx, work);
172 struct bio *bio = ctx->bio;
173 bool may_have_compressed_pages = (ctx->enabled_steps & STEP_DECOMPRESS);
176 * fsverity_verify_bio() may call readahead() again, and while verity
177 * will be disabled for this, decryption and/or decompression may still
178 * be needed, resulting in another bio_post_read_ctx being allocated.
179 * So to prevent deadlocks we need to release the current ctx to the
180 * mempool first. This assumes that verity is the last post-read step.
182 mempool_free(ctx, bio_post_read_ctx_pool);
183 bio->bi_private = NULL;
186 * Verify the bio's pages with fs-verity. Exclude compressed pages,
187 * as those were handled separately by f2fs_end_read_compressed_page().
189 if (may_have_compressed_pages) {
191 struct bvec_iter_all iter_all;
193 bio_for_each_segment_all(bv, bio, iter_all) {
194 struct page *page = bv->bv_page;
196 if (!f2fs_is_compressed_page(page) &&
197 !fsverity_verify_page(page)) {
198 bio->bi_status = BLK_STS_IOERR;
203 fsverity_verify_bio(bio);
206 f2fs_finish_read_bio(bio, true);
210 * If the bio's data needs to be verified with fs-verity, then enqueue the
211 * verity work for the bio. Otherwise finish the bio now.
213 * Note that to avoid deadlocks, the verity work can't be done on the
214 * decryption/decompression workqueue. This is because verifying the data pages
215 * can involve reading verity metadata pages from the file, and these verity
216 * metadata pages may be encrypted and/or compressed.
218 static void f2fs_verify_and_finish_bio(struct bio *bio, bool in_task)
220 struct bio_post_read_ctx *ctx = bio->bi_private;
222 if (ctx && (ctx->enabled_steps & STEP_VERITY)) {
223 INIT_WORK(&ctx->work, f2fs_verify_bio);
224 fsverity_enqueue_verify_work(&ctx->work);
226 f2fs_finish_read_bio(bio, in_task);
231 * Handle STEP_DECOMPRESS by decompressing any compressed clusters whose last
232 * remaining page was read by @ctx->bio.
234 * Note that a bio may span clusters (even a mix of compressed and uncompressed
235 * clusters) or be for just part of a cluster. STEP_DECOMPRESS just indicates
236 * that the bio includes at least one compressed page. The actual decompression
237 * is done on a per-cluster basis, not a per-bio basis.
239 static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx,
243 struct bvec_iter_all iter_all;
244 bool all_compressed = true;
245 block_t blkaddr = ctx->fs_blkaddr;
247 bio_for_each_segment_all(bv, ctx->bio, iter_all) {
248 struct page *page = bv->bv_page;
250 if (f2fs_is_compressed_page(page))
251 f2fs_end_read_compressed_page(page, false, blkaddr,
254 all_compressed = false;
259 ctx->decompression_attempted = true;
262 * Optimization: if all the bio's pages are compressed, then scheduling
263 * the per-bio verity work is unnecessary, as verity will be fully
264 * handled at the compression cluster level.
267 ctx->enabled_steps &= ~STEP_VERITY;
270 static void f2fs_post_read_work(struct work_struct *work)
272 struct bio_post_read_ctx *ctx =
273 container_of(work, struct bio_post_read_ctx, work);
274 struct bio *bio = ctx->bio;
276 if ((ctx->enabled_steps & STEP_DECRYPT) && !fscrypt_decrypt_bio(bio)) {
277 f2fs_finish_read_bio(bio, true);
281 if (ctx->enabled_steps & STEP_DECOMPRESS)
282 f2fs_handle_step_decompress(ctx, true);
284 f2fs_verify_and_finish_bio(bio, true);
287 static void f2fs_read_end_io(struct bio *bio)
289 struct f2fs_sb_info *sbi = F2FS_P_SB(bio_first_page_all(bio));
290 struct bio_post_read_ctx *ctx;
291 bool intask = in_task();
293 iostat_update_and_unbind_ctx(bio);
294 ctx = bio->bi_private;
296 if (time_to_inject(sbi, FAULT_READ_IO))
297 bio->bi_status = BLK_STS_IOERR;
299 if (bio->bi_status) {
300 f2fs_finish_read_bio(bio, intask);
305 unsigned int enabled_steps = ctx->enabled_steps &
306 (STEP_DECRYPT | STEP_DECOMPRESS);
309 * If we have only decompression step between decompression and
310 * decrypt, we don't need post processing for this.
312 if (enabled_steps == STEP_DECOMPRESS &&
313 !f2fs_low_mem_mode(sbi)) {
314 f2fs_handle_step_decompress(ctx, intask);
315 } else if (enabled_steps) {
316 INIT_WORK(&ctx->work, f2fs_post_read_work);
317 queue_work(ctx->sbi->post_read_wq, &ctx->work);
322 f2fs_verify_and_finish_bio(bio, intask);
325 static void f2fs_write_end_io(struct bio *bio)
327 struct f2fs_sb_info *sbi;
328 struct bio_vec *bvec;
329 struct bvec_iter_all iter_all;
331 iostat_update_and_unbind_ctx(bio);
332 sbi = bio->bi_private;
334 if (time_to_inject(sbi, FAULT_WRITE_IO))
335 bio->bi_status = BLK_STS_IOERR;
337 bio_for_each_segment_all(bvec, bio, iter_all) {
338 struct page *page = bvec->bv_page;
339 enum count_type type = WB_DATA_TYPE(page, false);
341 if (page_private_dummy(page)) {
342 clear_page_private_dummy(page);
344 mempool_free(page, sbi->write_io_dummy);
346 if (unlikely(bio->bi_status))
347 f2fs_stop_checkpoint(sbi, true,
348 STOP_CP_REASON_WRITE_FAIL);
352 fscrypt_finalize_bounce_page(&page);
354 #ifdef CONFIG_F2FS_FS_COMPRESSION
355 if (f2fs_is_compressed_page(page)) {
356 f2fs_compress_write_end_io(bio, page);
361 if (unlikely(bio->bi_status)) {
362 mapping_set_error(page->mapping, -EIO);
363 if (type == F2FS_WB_CP_DATA)
364 f2fs_stop_checkpoint(sbi, true,
365 STOP_CP_REASON_WRITE_FAIL);
368 f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
369 page->index != nid_of_node(page));
371 dec_page_count(sbi, type);
372 if (f2fs_in_warm_node_list(sbi, page))
373 f2fs_del_fsync_node_entry(sbi, page);
374 clear_page_private_gcing(page);
375 end_page_writeback(page);
377 if (!get_pages(sbi, F2FS_WB_CP_DATA) &&
378 wq_has_sleeper(&sbi->cp_wait))
379 wake_up(&sbi->cp_wait);
384 #ifdef CONFIG_BLK_DEV_ZONED
385 static void f2fs_zone_write_end_io(struct bio *bio)
387 struct f2fs_bio_info *io = (struct f2fs_bio_info *)bio->bi_private;
389 bio->bi_private = io->bi_private;
390 complete(&io->zone_wait);
391 f2fs_write_end_io(bio);
395 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
396 block_t blk_addr, sector_t *sector)
398 struct block_device *bdev = sbi->sb->s_bdev;
401 if (f2fs_is_multi_device(sbi)) {
402 for (i = 0; i < sbi->s_ndevs; i++) {
403 if (FDEV(i).start_blk <= blk_addr &&
404 FDEV(i).end_blk >= blk_addr) {
405 blk_addr -= FDEV(i).start_blk;
413 *sector = SECTOR_FROM_BLOCK(blk_addr);
417 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr)
421 if (!f2fs_is_multi_device(sbi))
424 for (i = 0; i < sbi->s_ndevs; i++)
425 if (FDEV(i).start_blk <= blkaddr && FDEV(i).end_blk >= blkaddr)
430 static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio)
432 unsigned int temp_mask = GENMASK(NR_TEMP_TYPE - 1, 0);
433 unsigned int fua_flag, meta_flag, io_flag;
434 blk_opf_t op_flags = 0;
436 if (fio->op != REQ_OP_WRITE)
438 if (fio->type == DATA)
439 io_flag = fio->sbi->data_io_flag;
440 else if (fio->type == NODE)
441 io_flag = fio->sbi->node_io_flag;
445 fua_flag = io_flag & temp_mask;
446 meta_flag = (io_flag >> NR_TEMP_TYPE) & temp_mask;
449 * data/node io flag bits per temp:
450 * REQ_META | REQ_FUA |
451 * 5 | 4 | 3 | 2 | 1 | 0 |
452 * Cold | Warm | Hot | Cold | Warm | Hot |
454 if (BIT(fio->temp) & meta_flag)
455 op_flags |= REQ_META;
456 if (BIT(fio->temp) & fua_flag)
461 static struct bio *__bio_alloc(struct f2fs_io_info *fio, int npages)
463 struct f2fs_sb_info *sbi = fio->sbi;
464 struct block_device *bdev;
468 bdev = f2fs_target_device(sbi, fio->new_blkaddr, §or);
469 bio = bio_alloc_bioset(bdev, npages,
470 fio->op | fio->op_flags | f2fs_io_flags(fio),
471 GFP_NOIO, &f2fs_bioset);
472 bio->bi_iter.bi_sector = sector;
473 if (is_read_io(fio->op)) {
474 bio->bi_end_io = f2fs_read_end_io;
475 bio->bi_private = NULL;
477 bio->bi_end_io = f2fs_write_end_io;
478 bio->bi_private = sbi;
480 iostat_alloc_and_bind_ctx(sbi, bio, NULL);
483 wbc_init_bio(fio->io_wbc, bio);
488 static void f2fs_set_bio_crypt_ctx(struct bio *bio, const struct inode *inode,
490 const struct f2fs_io_info *fio,
494 * The f2fs garbage collector sets ->encrypted_page when it wants to
495 * read/write raw data without encryption.
497 if (!fio || !fio->encrypted_page)
498 fscrypt_set_bio_crypt_ctx(bio, inode, first_idx, gfp_mask);
501 static bool f2fs_crypt_mergeable_bio(struct bio *bio, const struct inode *inode,
503 const struct f2fs_io_info *fio)
506 * The f2fs garbage collector sets ->encrypted_page when it wants to
507 * read/write raw data without encryption.
509 if (fio && fio->encrypted_page)
510 return !bio_has_crypt_ctx(bio);
512 return fscrypt_mergeable_bio(bio, inode, next_idx);
515 void f2fs_submit_read_bio(struct f2fs_sb_info *sbi, struct bio *bio,
518 WARN_ON_ONCE(!is_read_io(bio_op(bio)));
519 trace_f2fs_submit_read_bio(sbi->sb, type, bio);
521 iostat_update_submit_ctx(bio, type);
525 static void f2fs_align_write_bio(struct f2fs_sb_info *sbi, struct bio *bio)
528 (bio->bi_iter.bi_size >> F2FS_BLKSIZE_BITS) % F2FS_IO_SIZE(sbi);
533 /* fill dummy pages */
534 for (; start < F2FS_IO_SIZE(sbi); start++) {
536 mempool_alloc(sbi->write_io_dummy,
537 GFP_NOIO | __GFP_NOFAIL);
538 f2fs_bug_on(sbi, !page);
542 zero_user_segment(page, 0, PAGE_SIZE);
543 set_page_private_dummy(page);
545 if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE)
550 static void f2fs_submit_write_bio(struct f2fs_sb_info *sbi, struct bio *bio,
553 WARN_ON_ONCE(is_read_io(bio_op(bio)));
555 if (type == DATA || type == NODE) {
556 if (f2fs_lfs_mode(sbi) && current->plug)
557 blk_finish_plug(current->plug);
559 if (F2FS_IO_ALIGNED(sbi)) {
560 f2fs_align_write_bio(sbi, bio);
562 * In the NODE case, we lose next block address chain.
563 * So, we need to do checkpoint in f2fs_sync_file.
566 set_sbi_flag(sbi, SBI_NEED_CP);
570 trace_f2fs_submit_write_bio(sbi->sb, type, bio);
571 iostat_update_submit_ctx(bio, type);
575 static void __submit_merged_bio(struct f2fs_bio_info *io)
577 struct f2fs_io_info *fio = &io->fio;
582 if (is_read_io(fio->op)) {
583 trace_f2fs_prepare_read_bio(io->sbi->sb, fio->type, io->bio);
584 f2fs_submit_read_bio(io->sbi, io->bio, fio->type);
586 trace_f2fs_prepare_write_bio(io->sbi->sb, fio->type, io->bio);
587 f2fs_submit_write_bio(io->sbi, io->bio, fio->type);
592 static bool __has_merged_page(struct bio *bio, struct inode *inode,
593 struct page *page, nid_t ino)
595 struct bio_vec *bvec;
596 struct bvec_iter_all iter_all;
601 if (!inode && !page && !ino)
604 bio_for_each_segment_all(bvec, bio, iter_all) {
605 struct page *target = bvec->bv_page;
607 if (fscrypt_is_bounce_page(target)) {
608 target = fscrypt_pagecache_page(target);
612 if (f2fs_is_compressed_page(target)) {
613 target = f2fs_compress_control_page(target);
618 if (inode && inode == target->mapping->host)
620 if (page && page == target)
622 if (ino && ino == ino_of_node(target))
629 int f2fs_init_write_merge_io(struct f2fs_sb_info *sbi)
633 for (i = 0; i < NR_PAGE_TYPE; i++) {
634 int n = (i == META) ? 1 : NR_TEMP_TYPE;
637 sbi->write_io[i] = f2fs_kmalloc(sbi,
638 array_size(n, sizeof(struct f2fs_bio_info)),
640 if (!sbi->write_io[i])
643 for (j = HOT; j < n; j++) {
644 init_f2fs_rwsem(&sbi->write_io[i][j].io_rwsem);
645 sbi->write_io[i][j].sbi = sbi;
646 sbi->write_io[i][j].bio = NULL;
647 spin_lock_init(&sbi->write_io[i][j].io_lock);
648 INIT_LIST_HEAD(&sbi->write_io[i][j].io_list);
649 INIT_LIST_HEAD(&sbi->write_io[i][j].bio_list);
650 init_f2fs_rwsem(&sbi->write_io[i][j].bio_list_lock);
651 #ifdef CONFIG_BLK_DEV_ZONED
652 init_completion(&sbi->write_io[i][j].zone_wait);
653 sbi->write_io[i][j].zone_pending_bio = NULL;
654 sbi->write_io[i][j].bi_private = NULL;
662 static void __f2fs_submit_merged_write(struct f2fs_sb_info *sbi,
663 enum page_type type, enum temp_type temp)
665 enum page_type btype = PAGE_TYPE_OF_BIO(type);
666 struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
668 f2fs_down_write(&io->io_rwsem);
673 /* change META to META_FLUSH in the checkpoint procedure */
674 if (type >= META_FLUSH) {
675 io->fio.type = META_FLUSH;
676 io->bio->bi_opf |= REQ_META | REQ_PRIO | REQ_SYNC;
677 if (!test_opt(sbi, NOBARRIER))
678 io->bio->bi_opf |= REQ_PREFLUSH | REQ_FUA;
680 __submit_merged_bio(io);
682 f2fs_up_write(&io->io_rwsem);
685 static void __submit_merged_write_cond(struct f2fs_sb_info *sbi,
686 struct inode *inode, struct page *page,
687 nid_t ino, enum page_type type, bool force)
692 for (temp = HOT; temp < NR_TEMP_TYPE; temp++) {
694 enum page_type btype = PAGE_TYPE_OF_BIO(type);
695 struct f2fs_bio_info *io = sbi->write_io[btype] + temp;
697 f2fs_down_read(&io->io_rwsem);
698 ret = __has_merged_page(io->bio, inode, page, ino);
699 f2fs_up_read(&io->io_rwsem);
702 __f2fs_submit_merged_write(sbi, type, temp);
704 /* TODO: use HOT temp only for meta pages now. */
710 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type)
712 __submit_merged_write_cond(sbi, NULL, NULL, 0, type, true);
715 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
716 struct inode *inode, struct page *page,
717 nid_t ino, enum page_type type)
719 __submit_merged_write_cond(sbi, inode, page, ino, type, false);
722 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi)
724 f2fs_submit_merged_write(sbi, DATA);
725 f2fs_submit_merged_write(sbi, NODE);
726 f2fs_submit_merged_write(sbi, META);
730 * Fill the locked page with data located in the block address.
731 * A caller needs to unlock the page on failure.
733 int f2fs_submit_page_bio(struct f2fs_io_info *fio)
736 struct page *page = fio->encrypted_page ?
737 fio->encrypted_page : fio->page;
739 if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
740 fio->is_por ? META_POR : (__is_meta_io(fio) ?
741 META_GENERIC : DATA_GENERIC_ENHANCE))) {
742 f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR);
743 return -EFSCORRUPTED;
746 trace_f2fs_submit_page_bio(page, fio);
748 /* Allocate a new bio */
749 bio = __bio_alloc(fio, 1);
751 f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
752 fio->page->index, fio, GFP_NOIO);
754 if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
759 if (fio->io_wbc && !is_read_io(fio->op))
760 wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);
762 inc_page_count(fio->sbi, is_read_io(fio->op) ?
763 __read_io_type(page) : WB_DATA_TYPE(fio->page, false));
765 if (is_read_io(bio_op(bio)))
766 f2fs_submit_read_bio(fio->sbi, bio, fio->type);
768 f2fs_submit_write_bio(fio->sbi, bio, fio->type);
772 static bool page_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,
773 block_t last_blkaddr, block_t cur_blkaddr)
775 if (unlikely(sbi->max_io_bytes &&
776 bio->bi_iter.bi_size >= sbi->max_io_bytes))
778 if (last_blkaddr + 1 != cur_blkaddr)
780 return bio->bi_bdev == f2fs_target_device(sbi, cur_blkaddr, NULL);
783 static bool io_type_is_mergeable(struct f2fs_bio_info *io,
784 struct f2fs_io_info *fio)
786 if (io->fio.op != fio->op)
788 return io->fio.op_flags == fio->op_flags;
791 static bool io_is_mergeable(struct f2fs_sb_info *sbi, struct bio *bio,
792 struct f2fs_bio_info *io,
793 struct f2fs_io_info *fio,
794 block_t last_blkaddr,
797 if (F2FS_IO_ALIGNED(sbi) && (fio->type == DATA || fio->type == NODE)) {
798 unsigned int filled_blocks =
799 F2FS_BYTES_TO_BLK(bio->bi_iter.bi_size);
800 unsigned int io_size = F2FS_IO_SIZE(sbi);
801 unsigned int left_vecs = bio->bi_max_vecs - bio->bi_vcnt;
803 /* IOs in bio is aligned and left space of vectors is not enough */
804 if (!(filled_blocks % io_size) && left_vecs < io_size)
807 if (!page_is_mergeable(sbi, bio, last_blkaddr, cur_blkaddr))
809 return io_type_is_mergeable(io, fio);
812 static void add_bio_entry(struct f2fs_sb_info *sbi, struct bio *bio,
813 struct page *page, enum temp_type temp)
815 struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;
816 struct bio_entry *be;
818 be = f2fs_kmem_cache_alloc(bio_entry_slab, GFP_NOFS, true, NULL);
822 if (bio_add_page(bio, page, PAGE_SIZE, 0) != PAGE_SIZE)
825 f2fs_down_write(&io->bio_list_lock);
826 list_add_tail(&be->list, &io->bio_list);
827 f2fs_up_write(&io->bio_list_lock);
830 static void del_bio_entry(struct bio_entry *be)
833 kmem_cache_free(bio_entry_slab, be);
836 static int add_ipu_page(struct f2fs_io_info *fio, struct bio **bio,
839 struct f2fs_sb_info *sbi = fio->sbi;
844 for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) {
845 struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;
846 struct list_head *head = &io->bio_list;
847 struct bio_entry *be;
849 f2fs_down_write(&io->bio_list_lock);
850 list_for_each_entry(be, head, list) {
856 f2fs_bug_on(sbi, !page_is_mergeable(sbi, *bio,
859 if (f2fs_crypt_mergeable_bio(*bio,
860 fio->page->mapping->host,
861 fio->page->index, fio) &&
862 bio_add_page(*bio, page, PAGE_SIZE, 0) ==
868 /* page can't be merged into bio; submit the bio */
870 f2fs_submit_write_bio(sbi, *bio, DATA);
873 f2fs_up_write(&io->bio_list_lock);
884 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
885 struct bio **bio, struct page *page)
889 struct bio *target = bio ? *bio : NULL;
891 f2fs_bug_on(sbi, !target && !page);
893 for (temp = HOT; temp < NR_TEMP_TYPE && !found; temp++) {
894 struct f2fs_bio_info *io = sbi->write_io[DATA] + temp;
895 struct list_head *head = &io->bio_list;
896 struct bio_entry *be;
898 if (list_empty(head))
901 f2fs_down_read(&io->bio_list_lock);
902 list_for_each_entry(be, head, list) {
904 found = (target == be->bio);
906 found = __has_merged_page(be->bio, NULL,
911 f2fs_up_read(&io->bio_list_lock);
918 f2fs_down_write(&io->bio_list_lock);
919 list_for_each_entry(be, head, list) {
921 found = (target == be->bio);
923 found = __has_merged_page(be->bio, NULL,
931 f2fs_up_write(&io->bio_list_lock);
935 f2fs_submit_write_bio(sbi, target, DATA);
942 int f2fs_merge_page_bio(struct f2fs_io_info *fio)
944 struct bio *bio = *fio->bio;
945 struct page *page = fio->encrypted_page ?
946 fio->encrypted_page : fio->page;
948 if (!f2fs_is_valid_blkaddr(fio->sbi, fio->new_blkaddr,
949 __is_meta_io(fio) ? META_GENERIC : DATA_GENERIC)) {
950 f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR);
951 return -EFSCORRUPTED;
954 trace_f2fs_submit_page_bio(page, fio);
956 if (bio && !page_is_mergeable(fio->sbi, bio, *fio->last_block,
958 f2fs_submit_merged_ipu_write(fio->sbi, &bio, NULL);
961 bio = __bio_alloc(fio, BIO_MAX_VECS);
962 f2fs_set_bio_crypt_ctx(bio, fio->page->mapping->host,
963 fio->page->index, fio, GFP_NOIO);
965 add_bio_entry(fio->sbi, bio, page, fio->temp);
967 if (add_ipu_page(fio, &bio, page))
972 wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);
974 inc_page_count(fio->sbi, WB_DATA_TYPE(page, false));
976 *fio->last_block = fio->new_blkaddr;
982 #ifdef CONFIG_BLK_DEV_ZONED
983 static bool is_end_zone_blkaddr(struct f2fs_sb_info *sbi, block_t blkaddr)
987 if (f2fs_is_multi_device(sbi)) {
988 devi = f2fs_target_device_index(sbi, blkaddr);
989 if (blkaddr < FDEV(devi).start_blk ||
990 blkaddr > FDEV(devi).end_blk) {
991 f2fs_err(sbi, "Invalid block %x", blkaddr);
994 blkaddr -= FDEV(devi).start_blk;
996 return bdev_is_zoned(FDEV(devi).bdev) &&
997 f2fs_blkz_is_seq(sbi, devi, blkaddr) &&
998 (blkaddr % sbi->blocks_per_blkz == sbi->blocks_per_blkz - 1);
1002 void f2fs_submit_page_write(struct f2fs_io_info *fio)
1004 struct f2fs_sb_info *sbi = fio->sbi;
1005 enum page_type btype = PAGE_TYPE_OF_BIO(fio->type);
1006 struct f2fs_bio_info *io = sbi->write_io[btype] + fio->temp;
1007 struct page *bio_page;
1008 enum count_type type;
1010 f2fs_bug_on(sbi, is_read_io(fio->op));
1012 f2fs_down_write(&io->io_rwsem);
1014 #ifdef CONFIG_BLK_DEV_ZONED
1015 if (f2fs_sb_has_blkzoned(sbi) && btype < META && io->zone_pending_bio) {
1016 wait_for_completion_io(&io->zone_wait);
1017 bio_put(io->zone_pending_bio);
1018 io->zone_pending_bio = NULL;
1019 io->bi_private = NULL;
1024 spin_lock(&io->io_lock);
1025 if (list_empty(&io->io_list)) {
1026 spin_unlock(&io->io_lock);
1029 fio = list_first_entry(&io->io_list,
1030 struct f2fs_io_info, list);
1031 list_del(&fio->list);
1032 spin_unlock(&io->io_lock);
1035 verify_fio_blkaddr(fio);
1037 if (fio->encrypted_page)
1038 bio_page = fio->encrypted_page;
1039 else if (fio->compressed_page)
1040 bio_page = fio->compressed_page;
1042 bio_page = fio->page;
1044 /* set submitted = true as a return value */
1047 type = WB_DATA_TYPE(bio_page, fio->compressed_page);
1048 inc_page_count(sbi, type);
1051 (!io_is_mergeable(sbi, io->bio, io, fio, io->last_block_in_bio,
1052 fio->new_blkaddr) ||
1053 !f2fs_crypt_mergeable_bio(io->bio, fio->page->mapping->host,
1054 bio_page->index, fio)))
1055 __submit_merged_bio(io);
1057 if (io->bio == NULL) {
1058 if (F2FS_IO_ALIGNED(sbi) &&
1059 (fio->type == DATA || fio->type == NODE) &&
1060 fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
1061 dec_page_count(sbi, WB_DATA_TYPE(bio_page,
1062 fio->compressed_page));
1066 io->bio = __bio_alloc(fio, BIO_MAX_VECS);
1067 f2fs_set_bio_crypt_ctx(io->bio, fio->page->mapping->host,
1068 bio_page->index, fio, GFP_NOIO);
1072 if (bio_add_page(io->bio, bio_page, PAGE_SIZE, 0) < PAGE_SIZE) {
1073 __submit_merged_bio(io);
1078 wbc_account_cgroup_owner(fio->io_wbc, fio->page, PAGE_SIZE);
1080 io->last_block_in_bio = fio->new_blkaddr;
1082 trace_f2fs_submit_page_write(fio->page, fio);
1083 #ifdef CONFIG_BLK_DEV_ZONED
1084 if (f2fs_sb_has_blkzoned(sbi) && btype < META &&
1085 is_end_zone_blkaddr(sbi, fio->new_blkaddr)) {
1087 reinit_completion(&io->zone_wait);
1088 io->bi_private = io->bio->bi_private;
1089 io->bio->bi_private = io;
1090 io->bio->bi_end_io = f2fs_zone_write_end_io;
1091 io->zone_pending_bio = io->bio;
1092 __submit_merged_bio(io);
1099 if (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
1100 !f2fs_is_checkpoint_ready(sbi))
1101 __submit_merged_bio(io);
1102 f2fs_up_write(&io->io_rwsem);
1105 static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr,
1106 unsigned nr_pages, blk_opf_t op_flag,
1107 pgoff_t first_idx, bool for_write)
1109 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1111 struct bio_post_read_ctx *ctx = NULL;
1112 unsigned int post_read_steps = 0;
1114 struct block_device *bdev = f2fs_target_device(sbi, blkaddr, §or);
1116 bio = bio_alloc_bioset(bdev, bio_max_segs(nr_pages),
1117 REQ_OP_READ | op_flag,
1118 for_write ? GFP_NOIO : GFP_KERNEL, &f2fs_bioset);
1120 return ERR_PTR(-ENOMEM);
1121 bio->bi_iter.bi_sector = sector;
1122 f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS);
1123 bio->bi_end_io = f2fs_read_end_io;
1125 if (fscrypt_inode_uses_fs_layer_crypto(inode))
1126 post_read_steps |= STEP_DECRYPT;
1128 if (f2fs_need_verity(inode, first_idx))
1129 post_read_steps |= STEP_VERITY;
1132 * STEP_DECOMPRESS is handled specially, since a compressed file might
1133 * contain both compressed and uncompressed clusters. We'll allocate a
1134 * bio_post_read_ctx if the file is compressed, but the caller is
1135 * responsible for enabling STEP_DECOMPRESS if it's actually needed.
1138 if (post_read_steps || f2fs_compressed_file(inode)) {
1139 /* Due to the mempool, this never fails. */
1140 ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS);
1143 ctx->enabled_steps = post_read_steps;
1144 ctx->fs_blkaddr = blkaddr;
1145 ctx->decompression_attempted = false;
1146 bio->bi_private = ctx;
1148 iostat_alloc_and_bind_ctx(sbi, bio, ctx);
1153 /* This can handle encryption stuffs */
1154 static int f2fs_submit_page_read(struct inode *inode, struct page *page,
1155 block_t blkaddr, blk_opf_t op_flags,
1158 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1161 bio = f2fs_grab_read_bio(inode, blkaddr, 1, op_flags,
1162 page->index, for_write);
1164 return PTR_ERR(bio);
1166 /* wait for GCed page writeback via META_MAPPING */
1167 f2fs_wait_on_block_writeback(inode, blkaddr);
1169 if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
1170 iostat_update_and_unbind_ctx(bio);
1171 if (bio->bi_private)
1172 mempool_free(bio->bi_private, bio_post_read_ctx_pool);
1176 inc_page_count(sbi, F2FS_RD_DATA);
1177 f2fs_update_iostat(sbi, NULL, FS_DATA_READ_IO, F2FS_BLKSIZE);
1178 f2fs_submit_read_bio(sbi, bio, DATA);
1182 static void __set_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr)
1184 __le32 *addr = get_dnode_addr(dn->inode, dn->node_page);
1186 dn->data_blkaddr = blkaddr;
1187 addr[dn->ofs_in_node] = cpu_to_le32(dn->data_blkaddr);
1191 * Lock ordering for the change of data block address:
1194 * update block addresses in the node page
1196 void f2fs_set_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr)
1198 f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true);
1199 __set_data_blkaddr(dn, blkaddr);
1200 if (set_page_dirty(dn->node_page))
1201 dn->node_changed = true;
1204 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr)
1206 f2fs_set_data_blkaddr(dn, blkaddr);
1207 f2fs_update_read_extent_cache(dn);
1210 /* dn->ofs_in_node will be returned with up-to-date last block pointer */
1211 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
1213 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1219 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
1221 err = inc_valid_block_count(sbi, dn->inode, &count, true);
1225 trace_f2fs_reserve_new_blocks(dn->inode, dn->nid,
1226 dn->ofs_in_node, count);
1228 f2fs_wait_on_page_writeback(dn->node_page, NODE, true, true);
1230 for (; count > 0; dn->ofs_in_node++) {
1231 block_t blkaddr = f2fs_data_blkaddr(dn);
1233 if (blkaddr == NULL_ADDR) {
1234 __set_data_blkaddr(dn, NEW_ADDR);
1239 if (set_page_dirty(dn->node_page))
1240 dn->node_changed = true;
1244 /* Should keep dn->ofs_in_node unchanged */
1245 int f2fs_reserve_new_block(struct dnode_of_data *dn)
1247 unsigned int ofs_in_node = dn->ofs_in_node;
1250 ret = f2fs_reserve_new_blocks(dn, 1);
1251 dn->ofs_in_node = ofs_in_node;
1255 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index)
1257 bool need_put = dn->inode_page ? false : true;
1260 err = f2fs_get_dnode_of_data(dn, index, ALLOC_NODE);
1264 if (dn->data_blkaddr == NULL_ADDR)
1265 err = f2fs_reserve_new_block(dn);
1266 if (err || need_put)
1271 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
1272 blk_opf_t op_flags, bool for_write,
1273 pgoff_t *next_pgofs)
1275 struct address_space *mapping = inode->i_mapping;
1276 struct dnode_of_data dn;
1280 page = f2fs_grab_cache_page(mapping, index, for_write);
1282 return ERR_PTR(-ENOMEM);
1284 if (f2fs_lookup_read_extent_cache_block(inode, index,
1285 &dn.data_blkaddr)) {
1286 if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), dn.data_blkaddr,
1287 DATA_GENERIC_ENHANCE_READ)) {
1288 err = -EFSCORRUPTED;
1289 f2fs_handle_error(F2FS_I_SB(inode),
1290 ERROR_INVALID_BLKADDR);
1296 set_new_dnode(&dn, inode, NULL, NULL, 0);
1297 err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
1299 if (err == -ENOENT && next_pgofs)
1300 *next_pgofs = f2fs_get_next_page_offset(&dn, index);
1303 f2fs_put_dnode(&dn);
1305 if (unlikely(dn.data_blkaddr == NULL_ADDR)) {
1308 *next_pgofs = index + 1;
1311 if (dn.data_blkaddr != NEW_ADDR &&
1312 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
1314 DATA_GENERIC_ENHANCE)) {
1315 err = -EFSCORRUPTED;
1316 f2fs_handle_error(F2FS_I_SB(inode),
1317 ERROR_INVALID_BLKADDR);
1321 if (PageUptodate(page)) {
1327 * A new dentry page is allocated but not able to be written, since its
1328 * new inode page couldn't be allocated due to -ENOSPC.
1329 * In such the case, its blkaddr can be remained as NEW_ADDR.
1330 * see, f2fs_add_link -> f2fs_get_new_data_page ->
1331 * f2fs_init_inode_metadata.
1333 if (dn.data_blkaddr == NEW_ADDR) {
1334 zero_user_segment(page, 0, PAGE_SIZE);
1335 if (!PageUptodate(page))
1336 SetPageUptodate(page);
1341 err = f2fs_submit_page_read(inode, page, dn.data_blkaddr,
1342 op_flags, for_write);
1348 f2fs_put_page(page, 1);
1349 return ERR_PTR(err);
1352 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index,
1353 pgoff_t *next_pgofs)
1355 struct address_space *mapping = inode->i_mapping;
1358 page = find_get_page(mapping, index);
1359 if (page && PageUptodate(page))
1361 f2fs_put_page(page, 0);
1363 page = f2fs_get_read_data_page(inode, index, 0, false, next_pgofs);
1367 if (PageUptodate(page))
1370 wait_on_page_locked(page);
1371 if (unlikely(!PageUptodate(page))) {
1372 f2fs_put_page(page, 0);
1373 return ERR_PTR(-EIO);
1379 * If it tries to access a hole, return an error.
1380 * Because, the callers, functions in dir.c and GC, should be able to know
1381 * whether this page exists or not.
1383 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
1386 struct address_space *mapping = inode->i_mapping;
1389 page = f2fs_get_read_data_page(inode, index, 0, for_write, NULL);
1393 /* wait for read completion */
1395 if (unlikely(page->mapping != mapping || !PageUptodate(page))) {
1396 f2fs_put_page(page, 1);
1397 return ERR_PTR(-EIO);
1403 * Caller ensures that this data page is never allocated.
1404 * A new zero-filled data page is allocated in the page cache.
1406 * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and
1408 * Note that, ipage is set only by make_empty_dir, and if any error occur,
1409 * ipage should be released by this function.
1411 struct page *f2fs_get_new_data_page(struct inode *inode,
1412 struct page *ipage, pgoff_t index, bool new_i_size)
1414 struct address_space *mapping = inode->i_mapping;
1416 struct dnode_of_data dn;
1419 page = f2fs_grab_cache_page(mapping, index, true);
1422 * before exiting, we should make sure ipage will be released
1423 * if any error occur.
1425 f2fs_put_page(ipage, 1);
1426 return ERR_PTR(-ENOMEM);
1429 set_new_dnode(&dn, inode, ipage, NULL, 0);
1430 err = f2fs_reserve_block(&dn, index);
1432 f2fs_put_page(page, 1);
1433 return ERR_PTR(err);
1436 f2fs_put_dnode(&dn);
1438 if (PageUptodate(page))
1441 if (dn.data_blkaddr == NEW_ADDR) {
1442 zero_user_segment(page, 0, PAGE_SIZE);
1443 if (!PageUptodate(page))
1444 SetPageUptodate(page);
1446 f2fs_put_page(page, 1);
1448 /* if ipage exists, blkaddr should be NEW_ADDR */
1449 f2fs_bug_on(F2FS_I_SB(inode), ipage);
1450 page = f2fs_get_lock_data_page(inode, index, true);
1455 if (new_i_size && i_size_read(inode) <
1456 ((loff_t)(index + 1) << PAGE_SHIFT))
1457 f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT));
1461 static int __allocate_data_block(struct dnode_of_data *dn, int seg_type)
1463 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1464 struct f2fs_summary sum;
1465 struct node_info ni;
1466 block_t old_blkaddr;
1470 if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
1473 err = f2fs_get_node_info(sbi, dn->nid, &ni, false);
1477 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1478 if (dn->data_blkaddr == NULL_ADDR) {
1479 err = inc_valid_block_count(sbi, dn->inode, &count, true);
1484 set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version);
1485 old_blkaddr = dn->data_blkaddr;
1486 f2fs_allocate_data_block(sbi, NULL, old_blkaddr, &dn->data_blkaddr,
1487 &sum, seg_type, NULL);
1488 if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
1489 f2fs_invalidate_internal_cache(sbi, old_blkaddr);
1491 f2fs_update_data_blkaddr(dn, dn->data_blkaddr);
1495 static void f2fs_map_lock(struct f2fs_sb_info *sbi, int flag)
1497 if (flag == F2FS_GET_BLOCK_PRE_AIO)
1498 f2fs_down_read(&sbi->node_change);
1503 static void f2fs_map_unlock(struct f2fs_sb_info *sbi, int flag)
1505 if (flag == F2FS_GET_BLOCK_PRE_AIO)
1506 f2fs_up_read(&sbi->node_change);
1508 f2fs_unlock_op(sbi);
1511 int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index)
1513 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1516 f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
1517 if (!f2fs_lookup_read_extent_cache_block(dn->inode, index,
1519 err = f2fs_reserve_block(dn, index);
1520 f2fs_map_unlock(sbi, F2FS_GET_BLOCK_PRE_AIO);
1525 static int f2fs_map_no_dnode(struct inode *inode,
1526 struct f2fs_map_blocks *map, struct dnode_of_data *dn,
1529 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1532 * There is one exceptional case that read_node_page() may return
1533 * -ENOENT due to filesystem has been shutdown or cp_error, return
1534 * -EIO in that case.
1536 if (map->m_may_create &&
1537 (is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || f2fs_cp_error(sbi)))
1540 if (map->m_next_pgofs)
1541 *map->m_next_pgofs = f2fs_get_next_page_offset(dn, pgoff);
1542 if (map->m_next_extent)
1543 *map->m_next_extent = f2fs_get_next_page_offset(dn, pgoff);
1547 static bool f2fs_map_blocks_cached(struct inode *inode,
1548 struct f2fs_map_blocks *map, int flag)
1550 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1551 unsigned int maxblocks = map->m_len;
1552 pgoff_t pgoff = (pgoff_t)map->m_lblk;
1553 struct extent_info ei = {};
1555 if (!f2fs_lookup_read_extent_cache(inode, pgoff, &ei))
1558 map->m_pblk = ei.blk + pgoff - ei.fofs;
1559 map->m_len = min((pgoff_t)maxblocks, ei.fofs + ei.len - pgoff);
1560 map->m_flags = F2FS_MAP_MAPPED;
1561 if (map->m_next_extent)
1562 *map->m_next_extent = pgoff + map->m_len;
1564 /* for hardware encryption, but to avoid potential issue in future */
1565 if (flag == F2FS_GET_BLOCK_DIO)
1566 f2fs_wait_on_block_writeback_range(inode,
1567 map->m_pblk, map->m_len);
1569 if (f2fs_allow_multi_device_dio(sbi, flag)) {
1570 int bidx = f2fs_target_device_index(sbi, map->m_pblk);
1571 struct f2fs_dev_info *dev = &sbi->devs[bidx];
1573 map->m_bdev = dev->bdev;
1574 map->m_pblk -= dev->start_blk;
1575 map->m_len = min(map->m_len, dev->end_blk + 1 - map->m_pblk);
1577 map->m_bdev = inode->i_sb->s_bdev;
1583 * f2fs_map_blocks() tries to find or build mapping relationship which
1584 * maps continuous logical blocks to physical blocks, and return such
1585 * info via f2fs_map_blocks structure.
1587 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag)
1589 unsigned int maxblocks = map->m_len;
1590 struct dnode_of_data dn;
1591 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1592 int mode = map->m_may_create ? ALLOC_NODE : LOOKUP_NODE;
1593 pgoff_t pgofs, end_offset, end;
1594 int err = 0, ofs = 1;
1595 unsigned int ofs_in_node, last_ofs_in_node;
1598 unsigned int start_pgofs;
1605 if (!map->m_may_create && f2fs_map_blocks_cached(inode, map, flag))
1608 map->m_bdev = inode->i_sb->s_bdev;
1609 map->m_multidev_dio =
1610 f2fs_allow_multi_device_dio(F2FS_I_SB(inode), flag);
1615 /* it only supports block size == page size */
1616 pgofs = (pgoff_t)map->m_lblk;
1617 end = pgofs + maxblocks;
1620 if (map->m_may_create)
1621 f2fs_map_lock(sbi, flag);
1623 /* When reading holes, we need its node page */
1624 set_new_dnode(&dn, inode, NULL, NULL, 0);
1625 err = f2fs_get_dnode_of_data(&dn, pgofs, mode);
1627 if (flag == F2FS_GET_BLOCK_BMAP)
1630 err = f2fs_map_no_dnode(inode, map, &dn, pgofs);
1634 start_pgofs = pgofs;
1636 last_ofs_in_node = ofs_in_node = dn.ofs_in_node;
1637 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1640 blkaddr = f2fs_data_blkaddr(&dn);
1641 is_hole = !__is_valid_data_blkaddr(blkaddr);
1643 !f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC_ENHANCE)) {
1644 err = -EFSCORRUPTED;
1645 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
1649 /* use out-place-update for direct IO under LFS mode */
1650 if (map->m_may_create &&
1651 (is_hole || (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO))) {
1652 if (unlikely(f2fs_cp_error(sbi))) {
1658 case F2FS_GET_BLOCK_PRE_AIO:
1659 if (blkaddr == NULL_ADDR) {
1661 last_ofs_in_node = dn.ofs_in_node;
1664 case F2FS_GET_BLOCK_PRE_DIO:
1665 case F2FS_GET_BLOCK_DIO:
1666 err = __allocate_data_block(&dn, map->m_seg_type);
1669 if (flag == F2FS_GET_BLOCK_PRE_DIO)
1670 file_need_truncate(inode);
1671 set_inode_flag(inode, FI_APPEND_WRITE);
1679 blkaddr = dn.data_blkaddr;
1681 map->m_flags |= F2FS_MAP_NEW;
1682 } else if (is_hole) {
1683 if (f2fs_compressed_file(inode) &&
1684 f2fs_sanity_check_cluster(&dn)) {
1685 err = -EFSCORRUPTED;
1686 f2fs_handle_error(sbi,
1687 ERROR_CORRUPTED_CLUSTER);
1692 case F2FS_GET_BLOCK_PRECACHE:
1694 case F2FS_GET_BLOCK_BMAP:
1697 case F2FS_GET_BLOCK_FIEMAP:
1698 if (blkaddr == NULL_ADDR) {
1699 if (map->m_next_pgofs)
1700 *map->m_next_pgofs = pgofs + 1;
1705 /* for defragment case */
1706 if (map->m_next_pgofs)
1707 *map->m_next_pgofs = pgofs + 1;
1712 if (flag == F2FS_GET_BLOCK_PRE_AIO)
1715 if (map->m_multidev_dio)
1716 bidx = f2fs_target_device_index(sbi, blkaddr);
1718 if (map->m_len == 0) {
1719 /* reserved delalloc block should be mapped for fiemap. */
1720 if (blkaddr == NEW_ADDR)
1721 map->m_flags |= F2FS_MAP_DELALLOC;
1722 map->m_flags |= F2FS_MAP_MAPPED;
1724 map->m_pblk = blkaddr;
1727 if (map->m_multidev_dio)
1728 map->m_bdev = FDEV(bidx).bdev;
1729 } else if ((map->m_pblk != NEW_ADDR &&
1730 blkaddr == (map->m_pblk + ofs)) ||
1731 (map->m_pblk == NEW_ADDR && blkaddr == NEW_ADDR) ||
1732 flag == F2FS_GET_BLOCK_PRE_DIO) {
1733 if (map->m_multidev_dio && map->m_bdev != FDEV(bidx).bdev)
1745 /* preallocate blocks in batch for one dnode page */
1746 if (flag == F2FS_GET_BLOCK_PRE_AIO &&
1747 (pgofs == end || dn.ofs_in_node == end_offset)) {
1749 dn.ofs_in_node = ofs_in_node;
1750 err = f2fs_reserve_new_blocks(&dn, prealloc);
1754 map->m_len += dn.ofs_in_node - ofs_in_node;
1755 if (prealloc && dn.ofs_in_node != last_ofs_in_node + 1) {
1759 dn.ofs_in_node = end_offset;
1764 else if (dn.ofs_in_node < end_offset)
1767 if (flag == F2FS_GET_BLOCK_PRECACHE) {
1768 if (map->m_flags & F2FS_MAP_MAPPED) {
1769 unsigned int ofs = start_pgofs - map->m_lblk;
1771 f2fs_update_read_extent_cache_range(&dn,
1772 start_pgofs, map->m_pblk + ofs,
1777 f2fs_put_dnode(&dn);
1779 if (map->m_may_create) {
1780 f2fs_map_unlock(sbi, flag);
1781 f2fs_balance_fs(sbi, dn.node_changed);
1787 if (flag == F2FS_GET_BLOCK_DIO && map->m_flags & F2FS_MAP_MAPPED) {
1789 * for hardware encryption, but to avoid potential issue
1792 f2fs_wait_on_block_writeback_range(inode,
1793 map->m_pblk, map->m_len);
1795 if (map->m_multidev_dio) {
1796 block_t blk_addr = map->m_pblk;
1798 bidx = f2fs_target_device_index(sbi, map->m_pblk);
1800 map->m_bdev = FDEV(bidx).bdev;
1801 map->m_pblk -= FDEV(bidx).start_blk;
1803 if (map->m_may_create)
1804 f2fs_update_device_state(sbi, inode->i_ino,
1805 blk_addr, map->m_len);
1807 f2fs_bug_on(sbi, blk_addr + map->m_len >
1808 FDEV(bidx).end_blk + 1);
1812 if (flag == F2FS_GET_BLOCK_PRECACHE) {
1813 if (map->m_flags & F2FS_MAP_MAPPED) {
1814 unsigned int ofs = start_pgofs - map->m_lblk;
1816 f2fs_update_read_extent_cache_range(&dn,
1817 start_pgofs, map->m_pblk + ofs,
1820 if (map->m_next_extent)
1821 *map->m_next_extent = pgofs + 1;
1823 f2fs_put_dnode(&dn);
1825 if (map->m_may_create) {
1826 f2fs_map_unlock(sbi, flag);
1827 f2fs_balance_fs(sbi, dn.node_changed);
1830 trace_f2fs_map_blocks(inode, map, flag, err);
1834 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len)
1836 struct f2fs_map_blocks map;
1840 if (pos + len > i_size_read(inode))
1843 map.m_lblk = F2FS_BYTES_TO_BLK(pos);
1844 map.m_next_pgofs = NULL;
1845 map.m_next_extent = NULL;
1846 map.m_seg_type = NO_CHECK_TYPE;
1847 map.m_may_create = false;
1848 last_lblk = F2FS_BLK_ALIGN(pos + len);
1850 while (map.m_lblk < last_lblk) {
1851 map.m_len = last_lblk - map.m_lblk;
1852 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
1853 if (err || map.m_len == 0)
1855 map.m_lblk += map.m_len;
1860 static inline u64 bytes_to_blks(struct inode *inode, u64 bytes)
1862 return (bytes >> inode->i_blkbits);
1865 static inline u64 blks_to_bytes(struct inode *inode, u64 blks)
1867 return (blks << inode->i_blkbits);
1870 static int f2fs_xattr_fiemap(struct inode *inode,
1871 struct fiemap_extent_info *fieinfo)
1873 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1875 struct node_info ni;
1876 __u64 phys = 0, len;
1878 nid_t xnid = F2FS_I(inode)->i_xattr_nid;
1881 if (f2fs_has_inline_xattr(inode)) {
1884 page = f2fs_grab_cache_page(NODE_MAPPING(sbi),
1885 inode->i_ino, false);
1889 err = f2fs_get_node_info(sbi, inode->i_ino, &ni, false);
1891 f2fs_put_page(page, 1);
1895 phys = blks_to_bytes(inode, ni.blk_addr);
1896 offset = offsetof(struct f2fs_inode, i_addr) +
1897 sizeof(__le32) * (DEF_ADDRS_PER_INODE -
1898 get_inline_xattr_addrs(inode));
1901 len = inline_xattr_size(inode);
1903 f2fs_put_page(page, 1);
1905 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED;
1908 flags |= FIEMAP_EXTENT_LAST;
1910 err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
1911 trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
1917 page = f2fs_grab_cache_page(NODE_MAPPING(sbi), xnid, false);
1921 err = f2fs_get_node_info(sbi, xnid, &ni, false);
1923 f2fs_put_page(page, 1);
1927 phys = blks_to_bytes(inode, ni.blk_addr);
1928 len = inode->i_sb->s_blocksize;
1930 f2fs_put_page(page, 1);
1932 flags = FIEMAP_EXTENT_LAST;
1936 err = fiemap_fill_next_extent(fieinfo, 0, phys, len, flags);
1937 trace_f2fs_fiemap(inode, 0, phys, len, flags, err);
1940 return (err < 0 ? err : 0);
1943 static loff_t max_inode_blocks(struct inode *inode)
1945 loff_t result = ADDRS_PER_INODE(inode);
1946 loff_t leaf_count = ADDRS_PER_BLOCK(inode);
1948 /* two direct node blocks */
1949 result += (leaf_count * 2);
1951 /* two indirect node blocks */
1952 leaf_count *= NIDS_PER_BLOCK;
1953 result += (leaf_count * 2);
1955 /* one double indirect node block */
1956 leaf_count *= NIDS_PER_BLOCK;
1957 result += leaf_count;
1962 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
1965 struct f2fs_map_blocks map;
1966 sector_t start_blk, last_blk;
1968 u64 logical = 0, phys = 0, size = 0;
1971 bool compr_cluster = false, compr_appended;
1972 unsigned int cluster_size = F2FS_I(inode)->i_cluster_size;
1973 unsigned int count_in_cluster = 0;
1976 if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) {
1977 ret = f2fs_precache_extents(inode);
1982 ret = fiemap_prep(inode, fieinfo, start, &len, FIEMAP_FLAG_XATTR);
1986 inode_lock_shared(inode);
1988 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
1989 if (start > maxbytes) {
1994 if (len > maxbytes || (maxbytes - len) < start)
1995 len = maxbytes - start;
1997 if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
1998 ret = f2fs_xattr_fiemap(inode, fieinfo);
2002 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
2003 ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);
2008 if (bytes_to_blks(inode, len) == 0)
2009 len = blks_to_bytes(inode, 1);
2011 start_blk = bytes_to_blks(inode, start);
2012 last_blk = bytes_to_blks(inode, start + len - 1);
2015 memset(&map, 0, sizeof(map));
2016 map.m_lblk = start_blk;
2017 map.m_len = bytes_to_blks(inode, len);
2018 map.m_next_pgofs = &next_pgofs;
2019 map.m_seg_type = NO_CHECK_TYPE;
2021 if (compr_cluster) {
2023 map.m_len = cluster_size - count_in_cluster;
2026 ret = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_FIEMAP);
2031 if (!compr_cluster && !(map.m_flags & F2FS_MAP_FLAGS)) {
2032 start_blk = next_pgofs;
2034 if (blks_to_bytes(inode, start_blk) < blks_to_bytes(inode,
2035 max_inode_blocks(inode)))
2038 flags |= FIEMAP_EXTENT_LAST;
2041 compr_appended = false;
2042 /* In a case of compressed cluster, append this to the last extent */
2043 if (compr_cluster && ((map.m_flags & F2FS_MAP_DELALLOC) ||
2044 !(map.m_flags & F2FS_MAP_FLAGS))) {
2045 compr_appended = true;
2050 flags |= FIEMAP_EXTENT_MERGED;
2051 if (IS_ENCRYPTED(inode))
2052 flags |= FIEMAP_EXTENT_DATA_ENCRYPTED;
2054 ret = fiemap_fill_next_extent(fieinfo, logical,
2056 trace_f2fs_fiemap(inode, logical, phys, size, flags, ret);
2062 if (start_blk > last_blk)
2066 if (map.m_pblk == COMPRESS_ADDR) {
2067 compr_cluster = true;
2068 count_in_cluster = 1;
2069 } else if (compr_appended) {
2070 unsigned int appended_blks = cluster_size -
2071 count_in_cluster + 1;
2072 size += blks_to_bytes(inode, appended_blks);
2073 start_blk += appended_blks;
2074 compr_cluster = false;
2076 logical = blks_to_bytes(inode, start_blk);
2077 phys = __is_valid_data_blkaddr(map.m_pblk) ?
2078 blks_to_bytes(inode, map.m_pblk) : 0;
2079 size = blks_to_bytes(inode, map.m_len);
2082 if (compr_cluster) {
2083 flags = FIEMAP_EXTENT_ENCODED;
2084 count_in_cluster += map.m_len;
2085 if (count_in_cluster == cluster_size) {
2086 compr_cluster = false;
2087 size += blks_to_bytes(inode, 1);
2089 } else if (map.m_flags & F2FS_MAP_DELALLOC) {
2090 flags = FIEMAP_EXTENT_UNWRITTEN;
2093 start_blk += bytes_to_blks(inode, size);
2098 if (fatal_signal_pending(current))
2106 inode_unlock_shared(inode);
2110 static inline loff_t f2fs_readpage_limit(struct inode *inode)
2112 if (IS_ENABLED(CONFIG_FS_VERITY) && IS_VERITY(inode))
2113 return inode->i_sb->s_maxbytes;
2115 return i_size_read(inode);
2118 static int f2fs_read_single_page(struct inode *inode, struct page *page,
2120 struct f2fs_map_blocks *map,
2121 struct bio **bio_ret,
2122 sector_t *last_block_in_bio,
2125 struct bio *bio = *bio_ret;
2126 const unsigned blocksize = blks_to_bytes(inode, 1);
2127 sector_t block_in_file;
2128 sector_t last_block;
2129 sector_t last_block_in_file;
2133 block_in_file = (sector_t)page_index(page);
2134 last_block = block_in_file + nr_pages;
2135 last_block_in_file = bytes_to_blks(inode,
2136 f2fs_readpage_limit(inode) + blocksize - 1);
2137 if (last_block > last_block_in_file)
2138 last_block = last_block_in_file;
2140 /* just zeroing out page which is beyond EOF */
2141 if (block_in_file >= last_block)
2144 * Map blocks using the previous result first.
2146 if ((map->m_flags & F2FS_MAP_MAPPED) &&
2147 block_in_file > map->m_lblk &&
2148 block_in_file < (map->m_lblk + map->m_len))
2152 * Then do more f2fs_map_blocks() calls until we are
2153 * done with this page.
2155 map->m_lblk = block_in_file;
2156 map->m_len = last_block - block_in_file;
2158 ret = f2fs_map_blocks(inode, map, F2FS_GET_BLOCK_DEFAULT);
2162 if ((map->m_flags & F2FS_MAP_MAPPED)) {
2163 block_nr = map->m_pblk + block_in_file - map->m_lblk;
2164 SetPageMappedToDisk(page);
2166 if (!f2fs_is_valid_blkaddr(F2FS_I_SB(inode), block_nr,
2167 DATA_GENERIC_ENHANCE_READ)) {
2168 ret = -EFSCORRUPTED;
2169 f2fs_handle_error(F2FS_I_SB(inode),
2170 ERROR_INVALID_BLKADDR);
2175 zero_user_segment(page, 0, PAGE_SIZE);
2176 if (f2fs_need_verity(inode, page->index) &&
2177 !fsverity_verify_page(page)) {
2181 if (!PageUptodate(page))
2182 SetPageUptodate(page);
2188 * This page will go to BIO. Do we need to send this
2191 if (bio && (!page_is_mergeable(F2FS_I_SB(inode), bio,
2192 *last_block_in_bio, block_nr) ||
2193 !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) {
2195 f2fs_submit_read_bio(F2FS_I_SB(inode), bio, DATA);
2199 bio = f2fs_grab_read_bio(inode, block_nr, nr_pages,
2200 is_readahead ? REQ_RAHEAD : 0, page->index,
2210 * If the page is under writeback, we need to wait for
2211 * its completion to see the correct decrypted data.
2213 f2fs_wait_on_block_writeback(inode, block_nr);
2215 if (bio_add_page(bio, page, blocksize, 0) < blocksize)
2216 goto submit_and_realloc;
2218 inc_page_count(F2FS_I_SB(inode), F2FS_RD_DATA);
2219 f2fs_update_iostat(F2FS_I_SB(inode), NULL, FS_DATA_READ_IO,
2221 *last_block_in_bio = block_nr;
2227 #ifdef CONFIG_F2FS_FS_COMPRESSION
2228 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
2229 unsigned nr_pages, sector_t *last_block_in_bio,
2230 bool is_readahead, bool for_write)
2232 struct dnode_of_data dn;
2233 struct inode *inode = cc->inode;
2234 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2235 struct bio *bio = *bio_ret;
2236 unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size;
2237 sector_t last_block_in_file;
2238 const unsigned blocksize = blks_to_bytes(inode, 1);
2239 struct decompress_io_ctx *dic = NULL;
2240 struct extent_info ei = {};
2241 bool from_dnode = true;
2245 f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc));
2247 last_block_in_file = bytes_to_blks(inode,
2248 f2fs_readpage_limit(inode) + blocksize - 1);
2250 /* get rid of pages beyond EOF */
2251 for (i = 0; i < cc->cluster_size; i++) {
2252 struct page *page = cc->rpages[i];
2256 if ((sector_t)page->index >= last_block_in_file) {
2257 zero_user_segment(page, 0, PAGE_SIZE);
2258 if (!PageUptodate(page))
2259 SetPageUptodate(page);
2260 } else if (!PageUptodate(page)) {
2266 cc->rpages[i] = NULL;
2270 /* we are done since all pages are beyond EOF */
2271 if (f2fs_cluster_is_empty(cc))
2274 if (f2fs_lookup_read_extent_cache(inode, start_idx, &ei))
2278 goto skip_reading_dnode;
2280 set_new_dnode(&dn, inode, NULL, NULL, 0);
2281 ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE);
2285 if (unlikely(f2fs_cp_error(sbi))) {
2289 f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR);
2292 for (i = 1; i < cc->cluster_size; i++) {
2295 blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page,
2296 dn.ofs_in_node + i) :
2299 if (!__is_valid_data_blkaddr(blkaddr))
2302 if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) {
2308 if (!from_dnode && i >= ei.c_len)
2312 /* nothing to decompress */
2313 if (cc->nr_cpages == 0) {
2318 dic = f2fs_alloc_dic(cc);
2324 for (i = 0; i < cc->nr_cpages; i++) {
2325 struct page *page = dic->cpages[i];
2327 struct bio_post_read_ctx *ctx;
2329 blkaddr = from_dnode ? data_blkaddr(dn.inode, dn.node_page,
2330 dn.ofs_in_node + i + 1) :
2333 f2fs_wait_on_block_writeback(inode, blkaddr);
2335 if (f2fs_load_compressed_page(sbi, page, blkaddr)) {
2336 if (atomic_dec_and_test(&dic->remaining_pages)) {
2337 f2fs_decompress_cluster(dic, true);
2343 if (bio && (!page_is_mergeable(sbi, bio,
2344 *last_block_in_bio, blkaddr) ||
2345 !f2fs_crypt_mergeable_bio(bio, inode, page->index, NULL))) {
2347 f2fs_submit_read_bio(sbi, bio, DATA);
2352 bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages,
2353 is_readahead ? REQ_RAHEAD : 0,
2354 page->index, for_write);
2357 f2fs_decompress_end_io(dic, ret, true);
2358 f2fs_put_dnode(&dn);
2364 if (bio_add_page(bio, page, blocksize, 0) < blocksize)
2365 goto submit_and_realloc;
2367 ctx = get_post_read_ctx(bio);
2368 ctx->enabled_steps |= STEP_DECOMPRESS;
2369 refcount_inc(&dic->refcnt);
2371 inc_page_count(sbi, F2FS_RD_DATA);
2372 f2fs_update_iostat(sbi, inode, FS_DATA_READ_IO, F2FS_BLKSIZE);
2373 *last_block_in_bio = blkaddr;
2377 f2fs_put_dnode(&dn);
2384 f2fs_put_dnode(&dn);
2386 for (i = 0; i < cc->cluster_size; i++) {
2387 if (cc->rpages[i]) {
2388 ClearPageUptodate(cc->rpages[i]);
2389 unlock_page(cc->rpages[i]);
2398 * This function was originally taken from fs/mpage.c, and customized for f2fs.
2399 * Major change was from block_size == page_size in f2fs by default.
2401 static int f2fs_mpage_readpages(struct inode *inode,
2402 struct readahead_control *rac, struct page *page)
2404 struct bio *bio = NULL;
2405 sector_t last_block_in_bio = 0;
2406 struct f2fs_map_blocks map;
2407 #ifdef CONFIG_F2FS_FS_COMPRESSION
2408 struct compress_ctx cc = {
2410 .log_cluster_size = F2FS_I(inode)->i_log_cluster_size,
2411 .cluster_size = F2FS_I(inode)->i_cluster_size,
2412 .cluster_idx = NULL_CLUSTER,
2418 pgoff_t nc_cluster_idx = NULL_CLUSTER;
2420 unsigned nr_pages = rac ? readahead_count(rac) : 1;
2421 unsigned max_nr_pages = nr_pages;
2428 map.m_next_pgofs = NULL;
2429 map.m_next_extent = NULL;
2430 map.m_seg_type = NO_CHECK_TYPE;
2431 map.m_may_create = false;
2433 for (; nr_pages; nr_pages--) {
2435 page = readahead_page(rac);
2436 prefetchw(&page->flags);
2439 #ifdef CONFIG_F2FS_FS_COMPRESSION
2440 if (f2fs_compressed_file(inode)) {
2441 /* there are remained compressed pages, submit them */
2442 if (!f2fs_cluster_can_merge_page(&cc, page->index)) {
2443 ret = f2fs_read_multi_pages(&cc, &bio,
2446 rac != NULL, false);
2447 f2fs_destroy_compress_ctx(&cc, false);
2449 goto set_error_page;
2451 if (cc.cluster_idx == NULL_CLUSTER) {
2452 if (nc_cluster_idx ==
2453 page->index >> cc.log_cluster_size) {
2454 goto read_single_page;
2457 ret = f2fs_is_compressed_cluster(inode, page->index);
2459 goto set_error_page;
2462 page->index >> cc.log_cluster_size;
2463 goto read_single_page;
2466 nc_cluster_idx = NULL_CLUSTER;
2468 ret = f2fs_init_compress_ctx(&cc);
2470 goto set_error_page;
2472 f2fs_compress_ctx_add_page(&cc, page);
2479 ret = f2fs_read_single_page(inode, page, max_nr_pages, &map,
2480 &bio, &last_block_in_bio, rac);
2482 #ifdef CONFIG_F2FS_FS_COMPRESSION
2485 zero_user_segment(page, 0, PAGE_SIZE);
2488 #ifdef CONFIG_F2FS_FS_COMPRESSION
2494 #ifdef CONFIG_F2FS_FS_COMPRESSION
2495 if (f2fs_compressed_file(inode)) {
2497 if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) {
2498 ret = f2fs_read_multi_pages(&cc, &bio,
2501 rac != NULL, false);
2502 f2fs_destroy_compress_ctx(&cc, false);
2508 f2fs_submit_read_bio(F2FS_I_SB(inode), bio, DATA);
2512 static int f2fs_read_data_folio(struct file *file, struct folio *folio)
2514 struct page *page = &folio->page;
2515 struct inode *inode = page_file_mapping(page)->host;
2518 trace_f2fs_readpage(page, DATA);
2520 if (!f2fs_is_compress_backend_ready(inode)) {
2525 /* If the file has inline data, try to read it directly */
2526 if (f2fs_has_inline_data(inode))
2527 ret = f2fs_read_inline_data(inode, page);
2529 ret = f2fs_mpage_readpages(inode, NULL, page);
2533 static void f2fs_readahead(struct readahead_control *rac)
2535 struct inode *inode = rac->mapping->host;
2537 trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac));
2539 if (!f2fs_is_compress_backend_ready(inode))
2542 /* If the file has inline data, skip readahead */
2543 if (f2fs_has_inline_data(inode))
2546 f2fs_mpage_readpages(inode, rac, NULL);
2549 int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
2551 struct inode *inode = fio->page->mapping->host;
2552 struct page *mpage, *page;
2553 gfp_t gfp_flags = GFP_NOFS;
2555 if (!f2fs_encrypted_file(inode))
2558 page = fio->compressed_page ? fio->compressed_page : fio->page;
2560 if (fscrypt_inode_uses_inline_crypto(inode))
2564 fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page,
2565 PAGE_SIZE, 0, gfp_flags);
2566 if (IS_ERR(fio->encrypted_page)) {
2567 /* flush pending IOs and wait for a while in the ENOMEM case */
2568 if (PTR_ERR(fio->encrypted_page) == -ENOMEM) {
2569 f2fs_flush_merged_writes(fio->sbi);
2570 memalloc_retry_wait(GFP_NOFS);
2571 gfp_flags |= __GFP_NOFAIL;
2574 return PTR_ERR(fio->encrypted_page);
2577 mpage = find_lock_page(META_MAPPING(fio->sbi), fio->old_blkaddr);
2579 if (PageUptodate(mpage))
2580 memcpy(page_address(mpage),
2581 page_address(fio->encrypted_page), PAGE_SIZE);
2582 f2fs_put_page(mpage, 1);
2587 static inline bool check_inplace_update_policy(struct inode *inode,
2588 struct f2fs_io_info *fio)
2590 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2592 if (IS_F2FS_IPU_HONOR_OPU_WRITE(sbi) &&
2593 is_inode_flag_set(inode, FI_OPU_WRITE))
2595 if (IS_F2FS_IPU_FORCE(sbi))
2597 if (IS_F2FS_IPU_SSR(sbi) && f2fs_need_SSR(sbi))
2599 if (IS_F2FS_IPU_UTIL(sbi) && utilization(sbi) > SM_I(sbi)->min_ipu_util)
2601 if (IS_F2FS_IPU_SSR_UTIL(sbi) && f2fs_need_SSR(sbi) &&
2602 utilization(sbi) > SM_I(sbi)->min_ipu_util)
2606 * IPU for rewrite async pages
2608 if (IS_F2FS_IPU_ASYNC(sbi) && fio && fio->op == REQ_OP_WRITE &&
2609 !(fio->op_flags & REQ_SYNC) && !IS_ENCRYPTED(inode))
2612 /* this is only set during fdatasync */
2613 if (IS_F2FS_IPU_FSYNC(sbi) && is_inode_flag_set(inode, FI_NEED_IPU))
2616 if (unlikely(fio && is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
2617 !f2fs_is_checkpointed_data(sbi, fio->old_blkaddr)))
2623 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio)
2625 /* swap file is migrating in aligned write mode */
2626 if (is_inode_flag_set(inode, FI_ALIGNED_WRITE))
2629 if (f2fs_is_pinned_file(inode))
2632 /* if this is cold file, we should overwrite to avoid fragmentation */
2633 if (file_is_cold(inode) && !is_inode_flag_set(inode, FI_OPU_WRITE))
2636 return check_inplace_update_policy(inode, fio);
2639 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio)
2641 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2643 /* The below cases were checked when setting it. */
2644 if (f2fs_is_pinned_file(inode))
2646 if (fio && is_sbi_flag_set(sbi, SBI_NEED_FSCK))
2648 if (f2fs_lfs_mode(sbi))
2650 if (S_ISDIR(inode->i_mode))
2652 if (IS_NOQUOTA(inode))
2654 if (f2fs_is_atomic_file(inode))
2656 /* rewrite low ratio compress data w/ OPU mode to avoid fragmentation */
2657 if (f2fs_compressed_file(inode) &&
2658 F2FS_OPTION(sbi).compress_mode == COMPR_MODE_USER &&
2659 is_inode_flag_set(inode, FI_ENABLE_COMPRESS))
2662 /* swap file is migrating in aligned write mode */
2663 if (is_inode_flag_set(inode, FI_ALIGNED_WRITE))
2666 if (is_inode_flag_set(inode, FI_OPU_WRITE))
2670 if (page_private_gcing(fio->page))
2672 if (page_private_dummy(fio->page))
2674 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED) &&
2675 f2fs_is_checkpointed_data(sbi, fio->old_blkaddr)))
2681 static inline bool need_inplace_update(struct f2fs_io_info *fio)
2683 struct inode *inode = fio->page->mapping->host;
2685 if (f2fs_should_update_outplace(inode, fio))
2688 return f2fs_should_update_inplace(inode, fio);
2691 int f2fs_do_write_data_page(struct f2fs_io_info *fio)
2693 struct page *page = fio->page;
2694 struct inode *inode = page->mapping->host;
2695 struct dnode_of_data dn;
2696 struct node_info ni;
2697 bool ipu_force = false;
2700 /* Use COW inode to make dnode_of_data for atomic write */
2701 if (f2fs_is_atomic_file(inode))
2702 set_new_dnode(&dn, F2FS_I(inode)->cow_inode, NULL, NULL, 0);
2704 set_new_dnode(&dn, inode, NULL, NULL, 0);
2706 if (need_inplace_update(fio) &&
2707 f2fs_lookup_read_extent_cache_block(inode, page->index,
2708 &fio->old_blkaddr)) {
2709 if (!f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
2710 DATA_GENERIC_ENHANCE)) {
2711 f2fs_handle_error(fio->sbi,
2712 ERROR_INVALID_BLKADDR);
2713 return -EFSCORRUPTED;
2717 fio->need_lock = LOCK_DONE;
2721 /* Deadlock due to between page->lock and f2fs_lock_op */
2722 if (fio->need_lock == LOCK_REQ && !f2fs_trylock_op(fio->sbi))
2725 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
2729 fio->old_blkaddr = dn.data_blkaddr;
2731 /* This page is already truncated */
2732 if (fio->old_blkaddr == NULL_ADDR) {
2733 ClearPageUptodate(page);
2734 clear_page_private_gcing(page);
2738 if (__is_valid_data_blkaddr(fio->old_blkaddr) &&
2739 !f2fs_is_valid_blkaddr(fio->sbi, fio->old_blkaddr,
2740 DATA_GENERIC_ENHANCE)) {
2741 err = -EFSCORRUPTED;
2742 f2fs_handle_error(fio->sbi, ERROR_INVALID_BLKADDR);
2746 /* wait for GCed page writeback via META_MAPPING */
2748 f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
2751 * If current allocation needs SSR,
2752 * it had better in-place writes for updated data.
2755 (__is_valid_data_blkaddr(fio->old_blkaddr) &&
2756 need_inplace_update(fio))) {
2757 err = f2fs_encrypt_one_page(fio);
2761 set_page_writeback(page);
2762 f2fs_put_dnode(&dn);
2763 if (fio->need_lock == LOCK_REQ)
2764 f2fs_unlock_op(fio->sbi);
2765 err = f2fs_inplace_write_data(fio);
2767 if (fscrypt_inode_uses_fs_layer_crypto(inode))
2768 fscrypt_finalize_bounce_page(&fio->encrypted_page);
2769 if (PageWriteback(page))
2770 end_page_writeback(page);
2772 set_inode_flag(inode, FI_UPDATE_WRITE);
2774 trace_f2fs_do_write_data_page(fio->page, IPU);
2778 if (fio->need_lock == LOCK_RETRY) {
2779 if (!f2fs_trylock_op(fio->sbi)) {
2783 fio->need_lock = LOCK_REQ;
2786 err = f2fs_get_node_info(fio->sbi, dn.nid, &ni, false);
2790 fio->version = ni.version;
2792 err = f2fs_encrypt_one_page(fio);
2796 set_page_writeback(page);
2798 if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR)
2799 f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false);
2801 /* LFS mode write path */
2802 f2fs_outplace_write_data(&dn, fio);
2803 trace_f2fs_do_write_data_page(page, OPU);
2804 set_inode_flag(inode, FI_APPEND_WRITE);
2806 f2fs_put_dnode(&dn);
2808 if (fio->need_lock == LOCK_REQ)
2809 f2fs_unlock_op(fio->sbi);
2813 int f2fs_write_single_data_page(struct page *page, int *submitted,
2815 sector_t *last_block,
2816 struct writeback_control *wbc,
2817 enum iostat_type io_type,
2821 struct inode *inode = page->mapping->host;
2822 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2823 loff_t i_size = i_size_read(inode);
2824 const pgoff_t end_index = ((unsigned long long)i_size)
2826 loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT;
2827 unsigned offset = 0;
2828 bool need_balance_fs = false;
2829 bool quota_inode = IS_NOQUOTA(inode);
2831 struct f2fs_io_info fio = {
2833 .ino = inode->i_ino,
2836 .op_flags = wbc_to_write_flags(wbc),
2837 .old_blkaddr = NULL_ADDR,
2839 .encrypted_page = NULL,
2841 .compr_blocks = compr_blocks,
2842 .need_lock = compr_blocks ? LOCK_DONE : LOCK_RETRY,
2843 .post_read = f2fs_post_read_required(inode) ? 1 : 0,
2847 .last_block = last_block,
2850 trace_f2fs_writepage(page, DATA);
2852 /* we should bypass data pages to proceed the kworker jobs */
2853 if (unlikely(f2fs_cp_error(sbi))) {
2854 mapping_set_error(page->mapping, -EIO);
2856 * don't drop any dirty dentry pages for keeping lastest
2857 * directory structure.
2859 if (S_ISDIR(inode->i_mode) &&
2860 !is_sbi_flag_set(sbi, SBI_IS_CLOSE))
2863 /* keep data pages in remount-ro mode */
2864 if (F2FS_OPTION(sbi).errors == MOUNT_ERRORS_READONLY)
2869 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
2872 if (page->index < end_index ||
2873 f2fs_verity_in_progress(inode) ||
2878 * If the offset is out-of-range of file size,
2879 * this page does not have to be written to disk.
2881 offset = i_size & (PAGE_SIZE - 1);
2882 if ((page->index >= end_index + 1) || !offset)
2885 zero_user_segment(page, offset, PAGE_SIZE);
2887 /* Dentry/quota blocks are controlled by checkpoint */
2888 if (S_ISDIR(inode->i_mode) || quota_inode) {
2890 * We need to wait for node_write to avoid block allocation during
2891 * checkpoint. This can only happen to quota writes which can cause
2892 * the below discard race condition.
2895 f2fs_down_read(&sbi->node_write);
2897 fio.need_lock = LOCK_DONE;
2898 err = f2fs_do_write_data_page(&fio);
2901 f2fs_up_read(&sbi->node_write);
2906 if (!wbc->for_reclaim)
2907 need_balance_fs = true;
2908 else if (has_not_enough_free_secs(sbi, 0, 0))
2911 set_inode_flag(inode, FI_HOT_DATA);
2914 if (f2fs_has_inline_data(inode)) {
2915 err = f2fs_write_inline_data(inode, page);
2920 if (err == -EAGAIN) {
2921 err = f2fs_do_write_data_page(&fio);
2922 if (err == -EAGAIN) {
2923 f2fs_bug_on(sbi, compr_blocks);
2924 fio.need_lock = LOCK_REQ;
2925 err = f2fs_do_write_data_page(&fio);
2930 file_set_keep_isize(inode);
2932 spin_lock(&F2FS_I(inode)->i_size_lock);
2933 if (F2FS_I(inode)->last_disk_size < psize)
2934 F2FS_I(inode)->last_disk_size = psize;
2935 spin_unlock(&F2FS_I(inode)->i_size_lock);
2939 if (err && err != -ENOENT)
2943 inode_dec_dirty_pages(inode);
2945 ClearPageUptodate(page);
2946 clear_page_private_gcing(page);
2949 if (wbc->for_reclaim) {
2950 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, DATA);
2951 clear_inode_flag(inode, FI_HOT_DATA);
2952 f2fs_remove_dirty_inode(inode);
2956 if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) &&
2957 !F2FS_I(inode)->wb_task && allow_balance)
2958 f2fs_balance_fs(sbi, need_balance_fs);
2960 if (unlikely(f2fs_cp_error(sbi))) {
2961 f2fs_submit_merged_write(sbi, DATA);
2963 f2fs_submit_merged_ipu_write(sbi, bio, NULL);
2968 *submitted = fio.submitted;
2973 redirty_page_for_writepage(wbc, page);
2975 * pageout() in MM translates EAGAIN, so calls handle_write_error()
2976 * -> mapping_set_error() -> set_bit(AS_EIO, ...).
2977 * file_write_and_wait_range() will see EIO error, which is critical
2978 * to return value of fsync() followed by atomic_write failure to user.
2980 if (!err || wbc->for_reclaim)
2981 return AOP_WRITEPAGE_ACTIVATE;
2986 static int f2fs_write_data_page(struct page *page,
2987 struct writeback_control *wbc)
2989 #ifdef CONFIG_F2FS_FS_COMPRESSION
2990 struct inode *inode = page->mapping->host;
2992 if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
2995 if (f2fs_compressed_file(inode)) {
2996 if (f2fs_is_compressed_cluster(inode, page->index)) {
2997 redirty_page_for_writepage(wbc, page);
2998 return AOP_WRITEPAGE_ACTIVATE;
3004 return f2fs_write_single_data_page(page, NULL, NULL, NULL,
3005 wbc, FS_DATA_IO, 0, true);
3009 * This function was copied from write_cache_pages from mm/page-writeback.c.
3010 * The major change is making write step of cold data page separately from
3011 * warm/hot data page.
3013 static int f2fs_write_cache_pages(struct address_space *mapping,
3014 struct writeback_control *wbc,
3015 enum iostat_type io_type)
3018 int done = 0, retry = 0;
3019 struct page *pages_local[F2FS_ONSTACK_PAGES];
3020 struct page **pages = pages_local;
3021 struct folio_batch fbatch;
3022 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
3023 struct bio *bio = NULL;
3024 sector_t last_block;
3025 #ifdef CONFIG_F2FS_FS_COMPRESSION
3026 struct inode *inode = mapping->host;
3027 struct compress_ctx cc = {
3029 .log_cluster_size = F2FS_I(inode)->i_log_cluster_size,
3030 .cluster_size = F2FS_I(inode)->i_cluster_size,
3031 .cluster_idx = NULL_CLUSTER,
3035 .valid_nr_cpages = 0,
3038 .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size,
3042 int nr_folios, p, idx;
3044 unsigned int max_pages = F2FS_ONSTACK_PAGES;
3046 pgoff_t end; /* Inclusive */
3048 int range_whole = 0;
3054 #ifdef CONFIG_F2FS_FS_COMPRESSION
3055 if (f2fs_compressed_file(inode) &&
3056 1 << cc.log_cluster_size > F2FS_ONSTACK_PAGES) {
3057 pages = f2fs_kzalloc(sbi, sizeof(struct page *) <<
3058 cc.log_cluster_size, GFP_NOFS | __GFP_NOFAIL);
3059 max_pages = 1 << cc.log_cluster_size;
3063 folio_batch_init(&fbatch);
3065 if (get_dirty_pages(mapping->host) <=
3066 SM_I(F2FS_M_SB(mapping))->min_hot_blocks)
3067 set_inode_flag(mapping->host, FI_HOT_DATA);
3069 clear_inode_flag(mapping->host, FI_HOT_DATA);
3071 if (wbc->range_cyclic) {
3072 index = mapping->writeback_index; /* prev offset */
3075 index = wbc->range_start >> PAGE_SHIFT;
3076 end = wbc->range_end >> PAGE_SHIFT;
3077 if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
3080 if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)
3081 tag = PAGECACHE_TAG_TOWRITE;
3083 tag = PAGECACHE_TAG_DIRTY;
3086 if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)
3087 tag_pages_for_writeback(mapping, index, end);
3089 while (!done && !retry && (index <= end)) {
3092 nr_folios = filemap_get_folios_tag(mapping, &index, end,
3094 if (nr_folios == 0) {
3100 for (i = 0; i < nr_folios; i++) {
3101 struct folio *folio = fbatch.folios[i];
3104 p = folio_nr_pages(folio);
3106 pages[nr_pages] = folio_page(folio, idx);
3108 if (++nr_pages == max_pages) {
3109 index = folio->index + idx + 1;
3110 folio_batch_release(&fbatch);
3116 folio_batch_release(&fbatch);
3119 for (i = 0; i < nr_pages; i++) {
3120 struct page *page = pages[i];
3121 struct folio *folio = page_folio(page);
3125 #ifdef CONFIG_F2FS_FS_COMPRESSION
3126 if (f2fs_compressed_file(inode)) {
3127 void *fsdata = NULL;
3131 ret = f2fs_init_compress_ctx(&cc);
3137 if (!f2fs_cluster_can_merge_page(&cc,
3139 ret = f2fs_write_multi_pages(&cc,
3140 &submitted, wbc, io_type);
3146 if (unlikely(f2fs_cp_error(sbi)))
3149 if (!f2fs_cluster_is_empty(&cc))
3152 if (f2fs_all_cluster_page_ready(&cc,
3153 pages, i, nr_pages, true))
3156 ret2 = f2fs_prepare_compress_overwrite(
3158 folio->index, &fsdata);
3164 (!f2fs_compress_write_end(inode,
3165 fsdata, folio->index, 1) ||
3166 !f2fs_all_cluster_page_ready(&cc,
3174 /* give a priority to WB_SYNC threads */
3175 if (atomic_read(&sbi->wb_sync_req[DATA]) &&
3176 wbc->sync_mode == WB_SYNC_NONE) {
3180 #ifdef CONFIG_F2FS_FS_COMPRESSION
3183 done_index = folio->index;
3187 if (unlikely(folio->mapping != mapping)) {
3189 folio_unlock(folio);
3193 if (!folio_test_dirty(folio)) {
3194 /* someone wrote it for us */
3195 goto continue_unlock;
3198 if (folio_test_writeback(folio)) {
3199 if (wbc->sync_mode == WB_SYNC_NONE)
3200 goto continue_unlock;
3201 f2fs_wait_on_page_writeback(&folio->page, DATA, true, true);
3204 if (!folio_clear_dirty_for_io(folio))
3205 goto continue_unlock;
3207 #ifdef CONFIG_F2FS_FS_COMPRESSION
3208 if (f2fs_compressed_file(inode)) {
3210 f2fs_compress_ctx_add_page(&cc, &folio->page);
3214 ret = f2fs_write_single_data_page(&folio->page,
3215 &submitted, &bio, &last_block,
3216 wbc, io_type, 0, true);
3217 if (ret == AOP_WRITEPAGE_ACTIVATE)
3218 folio_unlock(folio);
3219 #ifdef CONFIG_F2FS_FS_COMPRESSION
3222 nwritten += submitted;
3223 wbc->nr_to_write -= submitted;
3225 if (unlikely(ret)) {
3227 * keep nr_to_write, since vfs uses this to
3228 * get # of written pages.
3230 if (ret == AOP_WRITEPAGE_ACTIVATE) {
3233 } else if (ret == -EAGAIN) {
3235 if (wbc->sync_mode == WB_SYNC_ALL) {
3236 f2fs_io_schedule_timeout(
3237 DEFAULT_IO_TIMEOUT);
3242 done_index = folio_next_index(folio);
3247 if (wbc->nr_to_write <= 0 &&
3248 wbc->sync_mode == WB_SYNC_NONE) {
3256 release_pages(pages, nr_pages);
3259 #ifdef CONFIG_F2FS_FS_COMPRESSION
3260 /* flush remained pages in compress cluster */
3261 if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) {
3262 ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type);
3263 nwritten += submitted;
3264 wbc->nr_to_write -= submitted;
3270 if (f2fs_compressed_file(inode))
3271 f2fs_destroy_compress_ctx(&cc, false);
3278 if (wbc->range_cyclic && !done)
3280 if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
3281 mapping->writeback_index = done_index;
3284 f2fs_submit_merged_write_cond(F2FS_M_SB(mapping), mapping->host,
3286 /* submit cached bio of IPU write */
3288 f2fs_submit_merged_ipu_write(sbi, &bio, NULL);
3290 #ifdef CONFIG_F2FS_FS_COMPRESSION
3291 if (pages != pages_local)
3298 static inline bool __should_serialize_io(struct inode *inode,
3299 struct writeback_control *wbc)
3301 /* to avoid deadlock in path of data flush */
3302 if (F2FS_I(inode)->wb_task)
3305 if (!S_ISREG(inode->i_mode))
3307 if (IS_NOQUOTA(inode))
3310 if (f2fs_need_compress_data(inode))
3312 if (wbc->sync_mode != WB_SYNC_ALL)
3314 if (get_dirty_pages(inode) >= SM_I(F2FS_I_SB(inode))->min_seq_blocks)
3319 static int __f2fs_write_data_pages(struct address_space *mapping,
3320 struct writeback_control *wbc,
3321 enum iostat_type io_type)
3323 struct inode *inode = mapping->host;
3324 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3325 struct blk_plug plug;
3327 bool locked = false;
3329 /* deal with chardevs and other special file */
3330 if (!mapping->a_ops->writepage)
3333 /* skip writing if there is no dirty page in this inode */
3334 if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE)
3337 /* during POR, we don't need to trigger writepage at all. */
3338 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
3341 if ((S_ISDIR(inode->i_mode) || IS_NOQUOTA(inode)) &&
3342 wbc->sync_mode == WB_SYNC_NONE &&
3343 get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) &&
3344 f2fs_available_free_memory(sbi, DIRTY_DENTS))
3347 /* skip writing in file defragment preparing stage */
3348 if (is_inode_flag_set(inode, FI_SKIP_WRITES))
3351 trace_f2fs_writepages(mapping->host, wbc, DATA);
3353 /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */
3354 if (wbc->sync_mode == WB_SYNC_ALL)
3355 atomic_inc(&sbi->wb_sync_req[DATA]);
3356 else if (atomic_read(&sbi->wb_sync_req[DATA])) {
3357 /* to avoid potential deadlock */
3359 blk_finish_plug(current->plug);
3363 if (__should_serialize_io(inode, wbc)) {
3364 mutex_lock(&sbi->writepages);
3368 blk_start_plug(&plug);
3369 ret = f2fs_write_cache_pages(mapping, wbc, io_type);
3370 blk_finish_plug(&plug);
3373 mutex_unlock(&sbi->writepages);
3375 if (wbc->sync_mode == WB_SYNC_ALL)
3376 atomic_dec(&sbi->wb_sync_req[DATA]);
3378 * if some pages were truncated, we cannot guarantee its mapping->host
3379 * to detect pending bios.
3382 f2fs_remove_dirty_inode(inode);
3386 wbc->pages_skipped += get_dirty_pages(inode);
3387 trace_f2fs_writepages(mapping->host, wbc, DATA);
3391 static int f2fs_write_data_pages(struct address_space *mapping,
3392 struct writeback_control *wbc)
3394 struct inode *inode = mapping->host;
3396 return __f2fs_write_data_pages(mapping, wbc,
3397 F2FS_I(inode)->cp_task == current ?
3398 FS_CP_DATA_IO : FS_DATA_IO);
3401 void f2fs_write_failed(struct inode *inode, loff_t to)
3403 loff_t i_size = i_size_read(inode);
3405 if (IS_NOQUOTA(inode))
3408 /* In the fs-verity case, f2fs_end_enable_verity() does the truncate */
3409 if (to > i_size && !f2fs_verity_in_progress(inode)) {
3410 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3411 filemap_invalidate_lock(inode->i_mapping);
3413 truncate_pagecache(inode, i_size);
3414 f2fs_truncate_blocks(inode, i_size, true);
3416 filemap_invalidate_unlock(inode->i_mapping);
3417 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3421 static int prepare_write_begin(struct f2fs_sb_info *sbi,
3422 struct page *page, loff_t pos, unsigned len,
3423 block_t *blk_addr, bool *node_changed)
3425 struct inode *inode = page->mapping->host;
3426 pgoff_t index = page->index;
3427 struct dnode_of_data dn;
3429 bool locked = false;
3430 int flag = F2FS_GET_BLOCK_PRE_AIO;
3434 * If a whole page is being written and we already preallocated all the
3435 * blocks, then there is no need to get a block address now.
3437 if (len == PAGE_SIZE && is_inode_flag_set(inode, FI_PREALLOCATED_ALL))
3440 /* f2fs_lock_op avoids race between write CP and convert_inline_page */
3441 if (f2fs_has_inline_data(inode)) {
3442 if (pos + len > MAX_INLINE_DATA(inode))
3443 flag = F2FS_GET_BLOCK_DEFAULT;
3444 f2fs_map_lock(sbi, flag);
3446 } else if ((pos & PAGE_MASK) >= i_size_read(inode)) {
3447 f2fs_map_lock(sbi, flag);
3452 /* check inline_data */
3453 ipage = f2fs_get_node_page(sbi, inode->i_ino);
3454 if (IS_ERR(ipage)) {
3455 err = PTR_ERR(ipage);
3459 set_new_dnode(&dn, inode, ipage, ipage, 0);
3461 if (f2fs_has_inline_data(inode)) {
3462 if (pos + len <= MAX_INLINE_DATA(inode)) {
3463 f2fs_do_read_inline_data(page, ipage);
3464 set_inode_flag(inode, FI_DATA_EXIST);
3466 set_page_private_inline(ipage);
3469 err = f2fs_convert_inline_page(&dn, page);
3470 if (err || dn.data_blkaddr != NULL_ADDR)
3474 if (!f2fs_lookup_read_extent_cache_block(inode, index,
3475 &dn.data_blkaddr)) {
3477 err = f2fs_reserve_block(&dn, index);
3482 err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3483 if (!err && dn.data_blkaddr != NULL_ADDR)
3485 f2fs_put_dnode(&dn);
3486 f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
3487 WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO);
3493 /* convert_inline_page can make node_changed */
3494 *blk_addr = dn.data_blkaddr;
3495 *node_changed = dn.node_changed;
3497 f2fs_put_dnode(&dn);
3500 f2fs_map_unlock(sbi, flag);
3504 static int __find_data_block(struct inode *inode, pgoff_t index,
3507 struct dnode_of_data dn;
3511 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
3513 return PTR_ERR(ipage);
3515 set_new_dnode(&dn, inode, ipage, ipage, 0);
3517 if (!f2fs_lookup_read_extent_cache_block(inode, index,
3518 &dn.data_blkaddr)) {
3520 err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3522 dn.data_blkaddr = NULL_ADDR;
3526 *blk_addr = dn.data_blkaddr;
3527 f2fs_put_dnode(&dn);
3531 static int __reserve_data_block(struct inode *inode, pgoff_t index,
3532 block_t *blk_addr, bool *node_changed)
3534 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3535 struct dnode_of_data dn;
3539 f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
3541 ipage = f2fs_get_node_page(sbi, inode->i_ino);
3542 if (IS_ERR(ipage)) {
3543 err = PTR_ERR(ipage);
3546 set_new_dnode(&dn, inode, ipage, ipage, 0);
3548 if (!f2fs_lookup_read_extent_cache_block(dn.inode, index,
3550 err = f2fs_reserve_block(&dn, index);
3552 *blk_addr = dn.data_blkaddr;
3553 *node_changed = dn.node_changed;
3554 f2fs_put_dnode(&dn);
3557 f2fs_map_unlock(sbi, F2FS_GET_BLOCK_PRE_AIO);
3561 static int prepare_atomic_write_begin(struct f2fs_sb_info *sbi,
3562 struct page *page, loff_t pos, unsigned int len,
3563 block_t *blk_addr, bool *node_changed, bool *use_cow)
3565 struct inode *inode = page->mapping->host;
3566 struct inode *cow_inode = F2FS_I(inode)->cow_inode;
3567 pgoff_t index = page->index;
3569 block_t ori_blk_addr = NULL_ADDR;
3571 /* If pos is beyond the end of file, reserve a new block in COW inode */
3572 if ((pos & PAGE_MASK) >= i_size_read(inode))
3575 /* Look for the block in COW inode first */
3576 err = __find_data_block(cow_inode, index, blk_addr);
3579 } else if (*blk_addr != NULL_ADDR) {
3584 if (is_inode_flag_set(inode, FI_ATOMIC_REPLACE))
3587 /* Look for the block in the original inode */
3588 err = __find_data_block(inode, index, &ori_blk_addr);
3593 /* Finally, we should reserve a new block in COW inode for the update */
3594 err = __reserve_data_block(cow_inode, index, blk_addr, node_changed);
3597 inc_atomic_write_cnt(inode);
3599 if (ori_blk_addr != NULL_ADDR)
3600 *blk_addr = ori_blk_addr;
3604 static int f2fs_write_begin(struct file *file, struct address_space *mapping,
3605 loff_t pos, unsigned len, struct page **pagep, void **fsdata)
3607 struct inode *inode = mapping->host;
3608 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3609 struct page *page = NULL;
3610 pgoff_t index = ((unsigned long long) pos) >> PAGE_SHIFT;
3611 bool need_balance = false;
3612 bool use_cow = false;
3613 block_t blkaddr = NULL_ADDR;
3616 trace_f2fs_write_begin(inode, pos, len);
3618 if (!f2fs_is_checkpoint_ready(sbi)) {
3624 * We should check this at this moment to avoid deadlock on inode page
3625 * and #0 page. The locking rule for inline_data conversion should be:
3626 * lock_page(page #0) -> lock_page(inode_page)
3629 err = f2fs_convert_inline_inode(inode);
3634 #ifdef CONFIG_F2FS_FS_COMPRESSION
3635 if (f2fs_compressed_file(inode)) {
3640 if (len == PAGE_SIZE && !(f2fs_is_atomic_file(inode)))
3643 ret = f2fs_prepare_compress_overwrite(inode, pagep,
3656 * Do not use grab_cache_page_write_begin() to avoid deadlock due to
3657 * wait_for_stable_page. Will wait that below with our IO control.
3659 page = f2fs_pagecache_get_page(mapping, index,
3660 FGP_LOCK | FGP_WRITE | FGP_CREAT, GFP_NOFS);
3666 /* TODO: cluster can be compressed due to race with .writepage */
3670 if (f2fs_is_atomic_file(inode))
3671 err = prepare_atomic_write_begin(sbi, page, pos, len,
3672 &blkaddr, &need_balance, &use_cow);
3674 err = prepare_write_begin(sbi, page, pos, len,
3675 &blkaddr, &need_balance);
3679 if (need_balance && !IS_NOQUOTA(inode) &&
3680 has_not_enough_free_secs(sbi, 0, 0)) {
3682 f2fs_balance_fs(sbi, true);
3684 if (page->mapping != mapping) {
3685 /* The page got truncated from under us */
3686 f2fs_put_page(page, 1);
3691 f2fs_wait_on_page_writeback(page, DATA, false, true);
3693 if (len == PAGE_SIZE || PageUptodate(page))
3696 if (!(pos & (PAGE_SIZE - 1)) && (pos + len) >= i_size_read(inode) &&
3697 !f2fs_verity_in_progress(inode)) {
3698 zero_user_segment(page, len, PAGE_SIZE);
3702 if (blkaddr == NEW_ADDR) {
3703 zero_user_segment(page, 0, PAGE_SIZE);
3704 SetPageUptodate(page);
3706 if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3707 DATA_GENERIC_ENHANCE_READ)) {
3708 err = -EFSCORRUPTED;
3709 f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
3712 err = f2fs_submit_page_read(use_cow ?
3713 F2FS_I(inode)->cow_inode : inode, page,
3719 if (unlikely(page->mapping != mapping)) {
3720 f2fs_put_page(page, 1);
3723 if (unlikely(!PageUptodate(page))) {
3731 f2fs_put_page(page, 1);
3732 f2fs_write_failed(inode, pos + len);
3736 static int f2fs_write_end(struct file *file,
3737 struct address_space *mapping,
3738 loff_t pos, unsigned len, unsigned copied,
3739 struct page *page, void *fsdata)
3741 struct inode *inode = page->mapping->host;
3743 trace_f2fs_write_end(inode, pos, len, copied);
3746 * This should be come from len == PAGE_SIZE, and we expect copied
3747 * should be PAGE_SIZE. Otherwise, we treat it with zero copied and
3748 * let generic_perform_write() try to copy data again through copied=0.
3750 if (!PageUptodate(page)) {
3751 if (unlikely(copied != len))
3754 SetPageUptodate(page);
3757 #ifdef CONFIG_F2FS_FS_COMPRESSION
3758 /* overwrite compressed file */
3759 if (f2fs_compressed_file(inode) && fsdata) {
3760 f2fs_compress_write_end(inode, fsdata, page->index, copied);
3761 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3763 if (pos + copied > i_size_read(inode) &&
3764 !f2fs_verity_in_progress(inode))
3765 f2fs_i_size_write(inode, pos + copied);
3773 set_page_dirty(page);
3775 if (pos + copied > i_size_read(inode) &&
3776 !f2fs_verity_in_progress(inode)) {
3777 f2fs_i_size_write(inode, pos + copied);
3778 if (f2fs_is_atomic_file(inode))
3779 f2fs_i_size_write(F2FS_I(inode)->cow_inode,
3783 f2fs_put_page(page, 1);
3784 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3788 void f2fs_invalidate_folio(struct folio *folio, size_t offset, size_t length)
3790 struct inode *inode = folio->mapping->host;
3791 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3793 if (inode->i_ino >= F2FS_ROOT_INO(sbi) &&
3794 (offset || length != folio_size(folio)))
3797 if (folio_test_dirty(folio)) {
3798 if (inode->i_ino == F2FS_META_INO(sbi)) {
3799 dec_page_count(sbi, F2FS_DIRTY_META);
3800 } else if (inode->i_ino == F2FS_NODE_INO(sbi)) {
3801 dec_page_count(sbi, F2FS_DIRTY_NODES);
3803 inode_dec_dirty_pages(inode);
3804 f2fs_remove_dirty_inode(inode);
3807 clear_page_private_all(&folio->page);
3810 bool f2fs_release_folio(struct folio *folio, gfp_t wait)
3812 /* If this is dirty folio, keep private data */
3813 if (folio_test_dirty(folio))
3816 clear_page_private_all(&folio->page);
3820 static bool f2fs_dirty_data_folio(struct address_space *mapping,
3821 struct folio *folio)
3823 struct inode *inode = mapping->host;
3825 trace_f2fs_set_page_dirty(&folio->page, DATA);
3827 if (!folio_test_uptodate(folio))
3828 folio_mark_uptodate(folio);
3829 BUG_ON(folio_test_swapcache(folio));
3831 if (filemap_dirty_folio(mapping, folio)) {
3832 f2fs_update_dirty_folio(inode, folio);
3839 static sector_t f2fs_bmap_compress(struct inode *inode, sector_t block)
3841 #ifdef CONFIG_F2FS_FS_COMPRESSION
3842 struct dnode_of_data dn;
3843 sector_t start_idx, blknr = 0;
3846 start_idx = round_down(block, F2FS_I(inode)->i_cluster_size);
3848 set_new_dnode(&dn, inode, NULL, NULL, 0);
3849 ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE);
3853 if (dn.data_blkaddr != COMPRESS_ADDR) {
3854 dn.ofs_in_node += block - start_idx;
3855 blknr = f2fs_data_blkaddr(&dn);
3856 if (!__is_valid_data_blkaddr(blknr))
3860 f2fs_put_dnode(&dn);
3868 static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
3870 struct inode *inode = mapping->host;
3873 if (f2fs_has_inline_data(inode))
3876 /* make sure allocating whole blocks */
3877 if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
3878 filemap_write_and_wait(mapping);
3880 /* Block number less than F2FS MAX BLOCKS */
3881 if (unlikely(block >= max_file_blocks(inode)))
3884 if (f2fs_compressed_file(inode)) {
3885 blknr = f2fs_bmap_compress(inode, block);
3887 struct f2fs_map_blocks map;
3889 memset(&map, 0, sizeof(map));
3892 map.m_next_pgofs = NULL;
3893 map.m_seg_type = NO_CHECK_TYPE;
3895 if (!f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_BMAP))
3899 trace_f2fs_bmap(inode, block, blknr);
3904 static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk,
3905 unsigned int blkcnt)
3907 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3908 unsigned int blkofs;
3909 unsigned int blk_per_sec = BLKS_PER_SEC(sbi);
3910 unsigned int secidx = start_blk / blk_per_sec;
3911 unsigned int end_sec = secidx + blkcnt / blk_per_sec;
3914 f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3915 filemap_invalidate_lock(inode->i_mapping);
3917 set_inode_flag(inode, FI_ALIGNED_WRITE);
3918 set_inode_flag(inode, FI_OPU_WRITE);
3920 for (; secidx < end_sec; secidx++) {
3921 f2fs_down_write(&sbi->pin_sem);
3924 f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false);
3925 f2fs_unlock_op(sbi);
3927 set_inode_flag(inode, FI_SKIP_WRITES);
3929 for (blkofs = 0; blkofs < blk_per_sec; blkofs++) {
3931 unsigned int blkidx = secidx * blk_per_sec + blkofs;
3933 page = f2fs_get_lock_data_page(inode, blkidx, true);
3935 f2fs_up_write(&sbi->pin_sem);
3936 ret = PTR_ERR(page);
3940 set_page_dirty(page);
3941 f2fs_put_page(page, 1);
3944 clear_inode_flag(inode, FI_SKIP_WRITES);
3946 ret = filemap_fdatawrite(inode->i_mapping);
3948 f2fs_up_write(&sbi->pin_sem);
3955 clear_inode_flag(inode, FI_SKIP_WRITES);
3956 clear_inode_flag(inode, FI_OPU_WRITE);
3957 clear_inode_flag(inode, FI_ALIGNED_WRITE);
3959 filemap_invalidate_unlock(inode->i_mapping);
3960 f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3965 static int check_swap_activate(struct swap_info_struct *sis,
3966 struct file *swap_file, sector_t *span)
3968 struct address_space *mapping = swap_file->f_mapping;
3969 struct inode *inode = mapping->host;
3970 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3971 sector_t cur_lblock;
3972 sector_t last_lblock;
3974 sector_t lowest_pblock = -1;
3975 sector_t highest_pblock = 0;
3977 unsigned long nr_pblocks;
3978 unsigned int blks_per_sec = BLKS_PER_SEC(sbi);
3979 unsigned int sec_blks_mask = BLKS_PER_SEC(sbi) - 1;
3980 unsigned int not_aligned = 0;
3984 * Map all the blocks into the extent list. This code doesn't try
3988 last_lblock = bytes_to_blks(inode, i_size_read(inode));
3990 while (cur_lblock < last_lblock && cur_lblock < sis->max) {
3991 struct f2fs_map_blocks map;
3995 memset(&map, 0, sizeof(map));
3996 map.m_lblk = cur_lblock;
3997 map.m_len = last_lblock - cur_lblock;
3998 map.m_next_pgofs = NULL;
3999 map.m_next_extent = NULL;
4000 map.m_seg_type = NO_CHECK_TYPE;
4001 map.m_may_create = false;
4003 ret = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_FIEMAP);
4008 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
4009 f2fs_err(sbi, "Swapfile has holes");
4014 pblock = map.m_pblk;
4015 nr_pblocks = map.m_len;
4017 if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask ||
4018 nr_pblocks & sec_blks_mask) {
4021 nr_pblocks = roundup(nr_pblocks, blks_per_sec);
4022 if (cur_lblock + nr_pblocks > sis->max)
4023 nr_pblocks -= blks_per_sec;
4026 /* this extent is last one */
4027 nr_pblocks = map.m_len;
4028 f2fs_warn(sbi, "Swapfile: last extent is not aligned to section");
4032 ret = f2fs_migrate_blocks(inode, cur_lblock,
4039 if (cur_lblock + nr_pblocks >= sis->max)
4040 nr_pblocks = sis->max - cur_lblock;
4042 if (cur_lblock) { /* exclude the header page */
4043 if (pblock < lowest_pblock)
4044 lowest_pblock = pblock;
4045 if (pblock + nr_pblocks - 1 > highest_pblock)
4046 highest_pblock = pblock + nr_pblocks - 1;
4050 * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks
4052 ret = add_swap_extent(sis, cur_lblock, nr_pblocks, pblock);
4056 cur_lblock += nr_pblocks;
4059 *span = 1 + highest_pblock - lowest_pblock;
4060 if (cur_lblock == 0)
4061 cur_lblock = 1; /* force Empty message */
4062 sis->max = cur_lblock;
4063 sis->pages = cur_lblock - 1;
4064 sis->highest_bit = cur_lblock - 1;
4067 f2fs_warn(sbi, "Swapfile (%u) is not align to section: 1) creat(), 2) ioctl(F2FS_IOC_SET_PIN_FILE), 3) fallocate(%lu * N)",
4068 not_aligned, blks_per_sec * F2FS_BLKSIZE);
4072 static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
4075 struct inode *inode = file_inode(file);
4078 if (!S_ISREG(inode->i_mode))
4081 if (f2fs_readonly(F2FS_I_SB(inode)->sb))
4084 if (f2fs_lfs_mode(F2FS_I_SB(inode))) {
4085 f2fs_err(F2FS_I_SB(inode),
4086 "Swapfile not supported in LFS mode");
4090 ret = f2fs_convert_inline_inode(inode);
4094 if (!f2fs_disable_compressed_file(inode))
4097 f2fs_precache_extents(inode);
4099 ret = check_swap_activate(sis, file, span);
4103 stat_inc_swapfile_inode(inode);
4104 set_inode_flag(inode, FI_PIN_FILE);
4105 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
4109 static void f2fs_swap_deactivate(struct file *file)
4111 struct inode *inode = file_inode(file);
4113 stat_dec_swapfile_inode(inode);
4114 clear_inode_flag(inode, FI_PIN_FILE);
4117 static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
4123 static void f2fs_swap_deactivate(struct file *file)
4128 const struct address_space_operations f2fs_dblock_aops = {
4129 .read_folio = f2fs_read_data_folio,
4130 .readahead = f2fs_readahead,
4131 .writepage = f2fs_write_data_page,
4132 .writepages = f2fs_write_data_pages,
4133 .write_begin = f2fs_write_begin,
4134 .write_end = f2fs_write_end,
4135 .dirty_folio = f2fs_dirty_data_folio,
4136 .migrate_folio = filemap_migrate_folio,
4137 .invalidate_folio = f2fs_invalidate_folio,
4138 .release_folio = f2fs_release_folio,
4140 .swap_activate = f2fs_swap_activate,
4141 .swap_deactivate = f2fs_swap_deactivate,
4144 void f2fs_clear_page_cache_dirty_tag(struct page *page)
4146 struct address_space *mapping = page_mapping(page);
4147 unsigned long flags;
4149 xa_lock_irqsave(&mapping->i_pages, flags);
4150 __xa_clear_mark(&mapping->i_pages, page_index(page),
4151 PAGECACHE_TAG_DIRTY);
4152 xa_unlock_irqrestore(&mapping->i_pages, flags);
4155 int __init f2fs_init_post_read_processing(void)
4157 bio_post_read_ctx_cache =
4158 kmem_cache_create("f2fs_bio_post_read_ctx",
4159 sizeof(struct bio_post_read_ctx), 0, 0, NULL);
4160 if (!bio_post_read_ctx_cache)
4162 bio_post_read_ctx_pool =
4163 mempool_create_slab_pool(NUM_PREALLOC_POST_READ_CTXS,
4164 bio_post_read_ctx_cache);
4165 if (!bio_post_read_ctx_pool)
4166 goto fail_free_cache;
4170 kmem_cache_destroy(bio_post_read_ctx_cache);
4175 void f2fs_destroy_post_read_processing(void)
4177 mempool_destroy(bio_post_read_ctx_pool);
4178 kmem_cache_destroy(bio_post_read_ctx_cache);
4181 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi)
4183 if (!f2fs_sb_has_encrypt(sbi) &&
4184 !f2fs_sb_has_verity(sbi) &&
4185 !f2fs_sb_has_compression(sbi))
4188 sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq",
4189 WQ_UNBOUND | WQ_HIGHPRI,
4191 return sbi->post_read_wq ? 0 : -ENOMEM;
4194 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi)
4196 if (sbi->post_read_wq)
4197 destroy_workqueue(sbi->post_read_wq);
4200 int __init f2fs_init_bio_entry_cache(void)
4202 bio_entry_slab = f2fs_kmem_cache_create("f2fs_bio_entry_slab",
4203 sizeof(struct bio_entry));
4204 return bio_entry_slab ? 0 : -ENOMEM;
4207 void f2fs_destroy_bio_entry_cache(void)
4209 kmem_cache_destroy(bio_entry_slab);
4212 static int f2fs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
4213 unsigned int flags, struct iomap *iomap,
4214 struct iomap *srcmap)
4216 struct f2fs_map_blocks map = {};
4217 pgoff_t next_pgofs = 0;
4220 map.m_lblk = bytes_to_blks(inode, offset);
4221 map.m_len = bytes_to_blks(inode, offset + length - 1) - map.m_lblk + 1;
4222 map.m_next_pgofs = &next_pgofs;
4223 map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint);
4224 if (flags & IOMAP_WRITE)
4225 map.m_may_create = true;
4227 err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DIO);
4231 iomap->offset = blks_to_bytes(inode, map.m_lblk);
4234 * When inline encryption is enabled, sometimes I/O to an encrypted file
4235 * has to be broken up to guarantee DUN contiguity. Handle this by
4236 * limiting the length of the mapping returned.
4238 map.m_len = fscrypt_limit_io_blocks(inode, map.m_lblk, map.m_len);
4241 * We should never see delalloc or compressed extents here based on
4242 * prior flushing and checks.
4244 if (WARN_ON_ONCE(map.m_pblk == NEW_ADDR))
4246 if (WARN_ON_ONCE(map.m_pblk == COMPRESS_ADDR))
4249 if (map.m_pblk != NULL_ADDR) {
4250 iomap->length = blks_to_bytes(inode, map.m_len);
4251 iomap->type = IOMAP_MAPPED;
4252 iomap->flags |= IOMAP_F_MERGED;
4253 iomap->bdev = map.m_bdev;
4254 iomap->addr = blks_to_bytes(inode, map.m_pblk);
4256 if (flags & IOMAP_WRITE)
4258 iomap->length = blks_to_bytes(inode, next_pgofs) -
4260 iomap->type = IOMAP_HOLE;
4261 iomap->addr = IOMAP_NULL_ADDR;
4264 if (map.m_flags & F2FS_MAP_NEW)
4265 iomap->flags |= IOMAP_F_NEW;
4266 if ((inode->i_state & I_DIRTY_DATASYNC) ||
4267 offset + length > i_size_read(inode))
4268 iomap->flags |= IOMAP_F_DIRTY;
4273 const struct iomap_ops f2fs_iomap_ops = {
4274 .iomap_begin = f2fs_iomap_begin,