1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
10 #include <linux/mpage.h>
11 #include <linux/writeback.h>
12 #include <linux/blkdev.h>
13 #include <linux/f2fs_fs.h>
14 #include <linux/pagevec.h>
15 #include <linux/swap.h>
16 #include <linux/kthread.h>
21 #include <trace/events/f2fs.h>
23 #define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
25 static struct kmem_cache *ino_entry_slab;
26 struct kmem_cache *f2fs_inode_entry_slab;
28 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io)
30 f2fs_build_fault_attr(sbi, 0, 0);
31 set_ckpt_flags(sbi, CP_ERROR_FLAG);
33 f2fs_flush_merged_writes(sbi);
37 * We guarantee no failure on the returned page.
39 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
41 struct address_space *mapping = META_MAPPING(sbi);
44 page = f2fs_grab_cache_page(mapping, index, false);
49 f2fs_wait_on_page_writeback(page, META, true, true);
50 if (!PageUptodate(page))
51 SetPageUptodate(page);
55 static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index,
58 struct address_space *mapping = META_MAPPING(sbi);
60 struct f2fs_io_info fio = {
64 .op_flags = REQ_META | REQ_PRIO,
67 .encrypted_page = NULL,
72 if (unlikely(!is_meta))
73 fio.op_flags &= ~REQ_META;
75 page = f2fs_grab_cache_page(mapping, index, false);
80 if (PageUptodate(page))
85 err = f2fs_submit_page_bio(&fio);
87 f2fs_put_page(page, 1);
91 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
94 if (unlikely(page->mapping != mapping)) {
95 f2fs_put_page(page, 1);
99 if (unlikely(!PageUptodate(page))) {
100 f2fs_put_page(page, 1);
101 return ERR_PTR(-EIO);
107 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index)
109 return __get_meta_page(sbi, index, true);
112 struct page *f2fs_get_meta_page_retry(struct f2fs_sb_info *sbi, pgoff_t index)
118 page = __get_meta_page(sbi, index, true);
120 if (PTR_ERR(page) == -EIO &&
121 ++count <= DEFAULT_RETRY_IO_COUNT)
123 f2fs_stop_checkpoint(sbi, false);
129 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index)
131 return __get_meta_page(sbi, index, false);
134 static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
137 struct seg_entry *se;
138 unsigned int segno, offset;
141 if (type != DATA_GENERIC_ENHANCE && type != DATA_GENERIC_ENHANCE_READ)
144 segno = GET_SEGNO(sbi, blkaddr);
145 offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);
146 se = get_seg_entry(sbi, segno);
148 exist = f2fs_test_bit(offset, se->cur_valid_map);
149 if (!exist && type == DATA_GENERIC_ENHANCE) {
150 f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
152 set_sbi_flag(sbi, SBI_NEED_FSCK);
158 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
159 block_t blkaddr, int type)
165 if (unlikely(blkaddr >= SIT_BLK_CNT(sbi)))
169 if (unlikely(blkaddr >= MAIN_BLKADDR(sbi) ||
170 blkaddr < SM_I(sbi)->ssa_blkaddr))
174 if (unlikely(blkaddr >= SIT_I(sbi)->sit_base_addr ||
175 blkaddr < __start_cp_addr(sbi)))
179 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
180 blkaddr < MAIN_BLKADDR(sbi)))
184 case DATA_GENERIC_ENHANCE:
185 case DATA_GENERIC_ENHANCE_READ:
186 if (unlikely(blkaddr >= MAX_BLKADDR(sbi) ||
187 blkaddr < MAIN_BLKADDR(sbi))) {
188 f2fs_warn(sbi, "access invalid blkaddr:%u",
190 set_sbi_flag(sbi, SBI_NEED_FSCK);
194 return __is_bitmap_valid(sbi, blkaddr, type);
198 if (unlikely(blkaddr < SEG0_BLKADDR(sbi) ||
199 blkaddr >= MAIN_BLKADDR(sbi)))
210 * Readahead CP/NAT/SIT/SSA/POR pages
212 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
216 block_t blkno = start;
217 struct f2fs_io_info fio = {
221 .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD,
222 .encrypted_page = NULL,
224 .is_por = (type == META_POR),
226 struct blk_plug plug;
229 if (unlikely(type == META_POR))
230 fio.op_flags &= ~REQ_META;
232 blk_start_plug(&plug);
233 for (; nrpages-- > 0; blkno++) {
235 if (!f2fs_is_valid_blkaddr(sbi, blkno, type))
240 if (unlikely(blkno >=
241 NAT_BLOCK_OFFSET(NM_I(sbi)->max_nid)))
243 /* get nat block addr */
244 fio.new_blkaddr = current_nat_addr(sbi,
245 blkno * NAT_ENTRY_PER_BLOCK);
248 if (unlikely(blkno >= TOTAL_SEGS(sbi)))
250 /* get sit block addr */
251 fio.new_blkaddr = current_sit_addr(sbi,
252 blkno * SIT_ENTRY_PER_BLOCK);
257 fio.new_blkaddr = blkno;
263 page = f2fs_grab_cache_page(META_MAPPING(sbi),
264 fio.new_blkaddr, false);
267 if (PageUptodate(page)) {
268 f2fs_put_page(page, 1);
273 err = f2fs_submit_page_bio(&fio);
274 f2fs_put_page(page, err ? 1 : 0);
277 f2fs_update_iostat(sbi, FS_META_READ_IO, F2FS_BLKSIZE);
280 blk_finish_plug(&plug);
281 return blkno - start;
284 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index)
287 bool readahead = false;
289 page = find_get_page(META_MAPPING(sbi), index);
290 if (!page || !PageUptodate(page))
292 f2fs_put_page(page, 0);
295 f2fs_ra_meta_pages(sbi, index, BIO_MAX_PAGES, META_POR, true);
298 static int __f2fs_write_meta_page(struct page *page,
299 struct writeback_control *wbc,
300 enum iostat_type io_type)
302 struct f2fs_sb_info *sbi = F2FS_P_SB(page);
304 trace_f2fs_writepage(page, META);
306 if (unlikely(f2fs_cp_error(sbi)))
308 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
310 if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
313 f2fs_do_write_meta_page(sbi, page, io_type);
314 dec_page_count(sbi, F2FS_DIRTY_META);
316 if (wbc->for_reclaim)
317 f2fs_submit_merged_write_cond(sbi, NULL, page, 0, META);
321 if (unlikely(f2fs_cp_error(sbi)))
322 f2fs_submit_merged_write(sbi, META);
327 redirty_page_for_writepage(wbc, page);
328 return AOP_WRITEPAGE_ACTIVATE;
331 static int f2fs_write_meta_page(struct page *page,
332 struct writeback_control *wbc)
334 return __f2fs_write_meta_page(page, wbc, FS_META_IO);
337 static int f2fs_write_meta_pages(struct address_space *mapping,
338 struct writeback_control *wbc)
340 struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
343 if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
346 /* collect a number of dirty meta pages and write together */
347 if (wbc->sync_mode != WB_SYNC_ALL &&
348 get_pages(sbi, F2FS_DIRTY_META) <
349 nr_pages_to_skip(sbi, META))
352 /* if locked failed, cp will flush dirty pages instead */
353 if (!down_write_trylock(&sbi->cp_global_sem))
356 trace_f2fs_writepages(mapping->host, wbc, META);
357 diff = nr_pages_to_write(sbi, META, wbc);
358 written = f2fs_sync_meta_pages(sbi, META, wbc->nr_to_write, FS_META_IO);
359 up_write(&sbi->cp_global_sem);
360 wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff);
364 wbc->pages_skipped += get_pages(sbi, F2FS_DIRTY_META);
365 trace_f2fs_writepages(mapping->host, wbc, META);
369 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
370 long nr_to_write, enum iostat_type io_type)
372 struct address_space *mapping = META_MAPPING(sbi);
373 pgoff_t index = 0, prev = ULONG_MAX;
377 struct writeback_control wbc = {
380 struct blk_plug plug;
384 blk_start_plug(&plug);
386 while ((nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
387 PAGECACHE_TAG_DIRTY))) {
390 for (i = 0; i < nr_pages; i++) {
391 struct page *page = pvec.pages[i];
393 if (prev == ULONG_MAX)
394 prev = page->index - 1;
395 if (nr_to_write != LONG_MAX && page->index != prev + 1) {
396 pagevec_release(&pvec);
402 if (unlikely(page->mapping != mapping)) {
407 if (!PageDirty(page)) {
408 /* someone wrote it for us */
409 goto continue_unlock;
412 f2fs_wait_on_page_writeback(page, META, true, true);
414 if (!clear_page_dirty_for_io(page))
415 goto continue_unlock;
417 if (__f2fs_write_meta_page(page, &wbc, io_type)) {
423 if (unlikely(nwritten >= nr_to_write))
426 pagevec_release(&pvec);
431 f2fs_submit_merged_write(sbi, type);
433 blk_finish_plug(&plug);
438 static int f2fs_set_meta_page_dirty(struct page *page)
440 trace_f2fs_set_page_dirty(page, META);
442 if (!PageUptodate(page))
443 SetPageUptodate(page);
444 if (!PageDirty(page)) {
445 __set_page_dirty_nobuffers(page);
446 inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META);
447 f2fs_set_page_private(page, 0);
453 const struct address_space_operations f2fs_meta_aops = {
454 .writepage = f2fs_write_meta_page,
455 .writepages = f2fs_write_meta_pages,
456 .set_page_dirty = f2fs_set_meta_page_dirty,
457 .invalidatepage = f2fs_invalidate_page,
458 .releasepage = f2fs_release_page,
459 #ifdef CONFIG_MIGRATION
460 .migratepage = f2fs_migrate_page,
464 static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino,
465 unsigned int devidx, int type)
467 struct inode_management *im = &sbi->im[type];
468 struct ino_entry *e, *tmp;
470 tmp = f2fs_kmem_cache_alloc(ino_entry_slab, GFP_NOFS);
472 radix_tree_preload(GFP_NOFS | __GFP_NOFAIL);
474 spin_lock(&im->ino_lock);
475 e = radix_tree_lookup(&im->ino_root, ino);
478 if (unlikely(radix_tree_insert(&im->ino_root, ino, e)))
481 memset(e, 0, sizeof(struct ino_entry));
484 list_add_tail(&e->list, &im->ino_list);
485 if (type != ORPHAN_INO)
489 if (type == FLUSH_INO)
490 f2fs_set_bit(devidx, (char *)&e->dirty_device);
492 spin_unlock(&im->ino_lock);
493 radix_tree_preload_end();
496 kmem_cache_free(ino_entry_slab, tmp);
499 static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
501 struct inode_management *im = &sbi->im[type];
504 spin_lock(&im->ino_lock);
505 e = radix_tree_lookup(&im->ino_root, ino);
508 radix_tree_delete(&im->ino_root, ino);
510 spin_unlock(&im->ino_lock);
511 kmem_cache_free(ino_entry_slab, e);
514 spin_unlock(&im->ino_lock);
517 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
519 /* add new dirty ino entry into list */
520 __add_ino_entry(sbi, ino, 0, type);
523 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
525 /* remove dirty ino entry from list */
526 __remove_ino_entry(sbi, ino, type);
529 /* mode should be APPEND_INO, UPDATE_INO or TRANS_DIR_INO */
530 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
532 struct inode_management *im = &sbi->im[mode];
535 spin_lock(&im->ino_lock);
536 e = radix_tree_lookup(&im->ino_root, ino);
537 spin_unlock(&im->ino_lock);
538 return e ? true : false;
541 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all)
543 struct ino_entry *e, *tmp;
546 for (i = all ? ORPHAN_INO : APPEND_INO; i < MAX_INO_ENTRY; i++) {
547 struct inode_management *im = &sbi->im[i];
549 spin_lock(&im->ino_lock);
550 list_for_each_entry_safe(e, tmp, &im->ino_list, list) {
552 radix_tree_delete(&im->ino_root, e->ino);
553 kmem_cache_free(ino_entry_slab, e);
556 spin_unlock(&im->ino_lock);
560 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
561 unsigned int devidx, int type)
563 __add_ino_entry(sbi, ino, devidx, type);
566 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
567 unsigned int devidx, int type)
569 struct inode_management *im = &sbi->im[type];
571 bool is_dirty = false;
573 spin_lock(&im->ino_lock);
574 e = radix_tree_lookup(&im->ino_root, ino);
575 if (e && f2fs_test_bit(devidx, (char *)&e->dirty_device))
577 spin_unlock(&im->ino_lock);
581 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi)
583 struct inode_management *im = &sbi->im[ORPHAN_INO];
586 spin_lock(&im->ino_lock);
588 if (time_to_inject(sbi, FAULT_ORPHAN)) {
589 spin_unlock(&im->ino_lock);
590 f2fs_show_injection_info(sbi, FAULT_ORPHAN);
594 if (unlikely(im->ino_num >= sbi->max_orphans))
598 spin_unlock(&im->ino_lock);
603 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi)
605 struct inode_management *im = &sbi->im[ORPHAN_INO];
607 spin_lock(&im->ino_lock);
608 f2fs_bug_on(sbi, im->ino_num == 0);
610 spin_unlock(&im->ino_lock);
613 void f2fs_add_orphan_inode(struct inode *inode)
615 /* add new orphan ino entry into list */
616 __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, 0, ORPHAN_INO);
617 f2fs_update_inode_page(inode);
620 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
622 /* remove orphan entry from orphan list */
623 __remove_ino_entry(sbi, ino, ORPHAN_INO);
626 static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
632 inode = f2fs_iget_retry(sbi->sb, ino);
635 * there should be a bug that we can't find the entry
638 f2fs_bug_on(sbi, PTR_ERR(inode) == -ENOENT);
639 return PTR_ERR(inode);
642 err = dquot_initialize(inode);
650 /* truncate all the data during iput */
653 err = f2fs_get_node_info(sbi, ino, &ni);
657 /* ENOMEM was fully retried in f2fs_evict_inode. */
658 if (ni.blk_addr != NULL_ADDR) {
665 set_sbi_flag(sbi, SBI_NEED_FSCK);
666 f2fs_warn(sbi, "%s: orphan failed (ino=%x), run fsck to fix.",
671 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi)
673 block_t start_blk, orphan_blocks, i, j;
674 unsigned int s_flags = sbi->sb->s_flags;
680 if (!is_set_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG))
683 if (bdev_read_only(sbi->sb->s_bdev)) {
684 f2fs_info(sbi, "write access unavailable, skipping orphan cleanup");
688 if (s_flags & SB_RDONLY) {
689 f2fs_info(sbi, "orphan cleanup on readonly fs");
690 sbi->sb->s_flags &= ~SB_RDONLY;
694 /* Needed for iput() to work correctly and not trash data */
695 sbi->sb->s_flags |= SB_ACTIVE;
698 * Turn on quotas which were not enabled for read-only mounts if
699 * filesystem has quota feature, so that they are updated correctly.
701 quota_enabled = f2fs_enable_quota_files(sbi, s_flags & SB_RDONLY);
704 start_blk = __start_cp_addr(sbi) + 1 + __cp_payload(sbi);
705 orphan_blocks = __start_sum_addr(sbi) - 1 - __cp_payload(sbi);
707 f2fs_ra_meta_pages(sbi, start_blk, orphan_blocks, META_CP, true);
709 for (i = 0; i < orphan_blocks; i++) {
711 struct f2fs_orphan_block *orphan_blk;
713 page = f2fs_get_meta_page(sbi, start_blk + i);
719 orphan_blk = (struct f2fs_orphan_block *)page_address(page);
720 for (j = 0; j < le32_to_cpu(orphan_blk->entry_count); j++) {
721 nid_t ino = le32_to_cpu(orphan_blk->ino[j]);
722 err = recover_orphan_inode(sbi, ino);
724 f2fs_put_page(page, 1);
728 f2fs_put_page(page, 1);
730 /* clear Orphan Flag */
731 clear_ckpt_flags(sbi, CP_ORPHAN_PRESENT_FLAG);
733 set_sbi_flag(sbi, SBI_IS_RECOVERED);
736 /* Turn quotas off */
738 f2fs_quota_off_umount(sbi->sb);
740 sbi->sb->s_flags = s_flags; /* Restore SB_RDONLY status */
745 static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
747 struct list_head *head;
748 struct f2fs_orphan_block *orphan_blk = NULL;
749 unsigned int nentries = 0;
750 unsigned short index = 1;
751 unsigned short orphan_blocks;
752 struct page *page = NULL;
753 struct ino_entry *orphan = NULL;
754 struct inode_management *im = &sbi->im[ORPHAN_INO];
756 orphan_blocks = GET_ORPHAN_BLOCKS(im->ino_num);
759 * we don't need to do spin_lock(&im->ino_lock) here, since all the
760 * orphan inode operations are covered under f2fs_lock_op().
761 * And, spin_lock should be avoided due to page operations below.
763 head = &im->ino_list;
765 /* loop for each orphan inode entry and write them in Jornal block */
766 list_for_each_entry(orphan, head, list) {
768 page = f2fs_grab_meta_page(sbi, start_blk++);
770 (struct f2fs_orphan_block *)page_address(page);
771 memset(orphan_blk, 0, sizeof(*orphan_blk));
774 orphan_blk->ino[nentries++] = cpu_to_le32(orphan->ino);
776 if (nentries == F2FS_ORPHANS_PER_BLOCK) {
778 * an orphan block is full of 1020 entries,
779 * then we need to flush current orphan blocks
780 * and bring another one in memory
782 orphan_blk->blk_addr = cpu_to_le16(index);
783 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
784 orphan_blk->entry_count = cpu_to_le32(nentries);
785 set_page_dirty(page);
786 f2fs_put_page(page, 1);
794 orphan_blk->blk_addr = cpu_to_le16(index);
795 orphan_blk->blk_count = cpu_to_le16(orphan_blocks);
796 orphan_blk->entry_count = cpu_to_le32(nentries);
797 set_page_dirty(page);
798 f2fs_put_page(page, 1);
802 static __u32 f2fs_checkpoint_chksum(struct f2fs_sb_info *sbi,
803 struct f2fs_checkpoint *ckpt)
805 unsigned int chksum_ofs = le32_to_cpu(ckpt->checksum_offset);
808 chksum = f2fs_crc32(sbi, ckpt, chksum_ofs);
809 if (chksum_ofs < CP_CHKSUM_OFFSET) {
810 chksum_ofs += sizeof(chksum);
811 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ckpt + chksum_ofs,
812 F2FS_BLKSIZE - chksum_ofs);
817 static int get_checkpoint_version(struct f2fs_sb_info *sbi, block_t cp_addr,
818 struct f2fs_checkpoint **cp_block, struct page **cp_page,
819 unsigned long long *version)
821 size_t crc_offset = 0;
824 *cp_page = f2fs_get_meta_page(sbi, cp_addr);
825 if (IS_ERR(*cp_page))
826 return PTR_ERR(*cp_page);
828 *cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
830 crc_offset = le32_to_cpu((*cp_block)->checksum_offset);
831 if (crc_offset < CP_MIN_CHKSUM_OFFSET ||
832 crc_offset > CP_CHKSUM_OFFSET) {
833 f2fs_put_page(*cp_page, 1);
834 f2fs_warn(sbi, "invalid crc_offset: %zu", crc_offset);
838 crc = f2fs_checkpoint_chksum(sbi, *cp_block);
839 if (crc != cur_cp_crc(*cp_block)) {
840 f2fs_put_page(*cp_page, 1);
841 f2fs_warn(sbi, "invalid crc value");
845 *version = cur_cp_version(*cp_block);
849 static struct page *validate_checkpoint(struct f2fs_sb_info *sbi,
850 block_t cp_addr, unsigned long long *version)
852 struct page *cp_page_1 = NULL, *cp_page_2 = NULL;
853 struct f2fs_checkpoint *cp_block = NULL;
854 unsigned long long cur_version = 0, pre_version = 0;
857 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
858 &cp_page_1, version);
862 if (le32_to_cpu(cp_block->cp_pack_total_block_count) >
863 sbi->blocks_per_seg) {
864 f2fs_warn(sbi, "invalid cp_pack_total_block_count:%u",
865 le32_to_cpu(cp_block->cp_pack_total_block_count));
868 pre_version = *version;
870 cp_addr += le32_to_cpu(cp_block->cp_pack_total_block_count) - 1;
871 err = get_checkpoint_version(sbi, cp_addr, &cp_block,
872 &cp_page_2, version);
875 cur_version = *version;
877 if (cur_version == pre_version) {
878 *version = cur_version;
879 f2fs_put_page(cp_page_2, 1);
882 f2fs_put_page(cp_page_2, 1);
884 f2fs_put_page(cp_page_1, 1);
888 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi)
890 struct f2fs_checkpoint *cp_block;
891 struct f2fs_super_block *fsb = sbi->raw_super;
892 struct page *cp1, *cp2, *cur_page;
893 unsigned long blk_size = sbi->blocksize;
894 unsigned long long cp1_version = 0, cp2_version = 0;
895 unsigned long long cp_start_blk_no;
896 unsigned int cp_blks = 1 + __cp_payload(sbi);
901 sbi->ckpt = f2fs_kvzalloc(sbi, array_size(blk_size, cp_blks),
906 * Finding out valid cp block involves read both
907 * sets( cp pack 1 and cp pack 2)
909 cp_start_blk_no = le32_to_cpu(fsb->cp_blkaddr);
910 cp1 = validate_checkpoint(sbi, cp_start_blk_no, &cp1_version);
912 /* The second checkpoint pack should start at the next segment */
913 cp_start_blk_no += ((unsigned long long)1) <<
914 le32_to_cpu(fsb->log_blocks_per_seg);
915 cp2 = validate_checkpoint(sbi, cp_start_blk_no, &cp2_version);
918 if (ver_after(cp2_version, cp1_version))
931 cp_block = (struct f2fs_checkpoint *)page_address(cur_page);
932 memcpy(sbi->ckpt, cp_block, blk_size);
935 sbi->cur_cp_pack = 1;
937 sbi->cur_cp_pack = 2;
939 /* Sanity checking of checkpoint */
940 if (f2fs_sanity_check_ckpt(sbi)) {
942 goto free_fail_no_cp;
948 cp_blk_no = le32_to_cpu(fsb->cp_blkaddr);
950 cp_blk_no += 1 << le32_to_cpu(fsb->log_blocks_per_seg);
952 for (i = 1; i < cp_blks; i++) {
953 void *sit_bitmap_ptr;
954 unsigned char *ckpt = (unsigned char *)sbi->ckpt;
956 cur_page = f2fs_get_meta_page(sbi, cp_blk_no + i);
957 if (IS_ERR(cur_page)) {
958 err = PTR_ERR(cur_page);
959 goto free_fail_no_cp;
961 sit_bitmap_ptr = page_address(cur_page);
962 memcpy(ckpt + i * blk_size, sit_bitmap_ptr, blk_size);
963 f2fs_put_page(cur_page, 1);
966 f2fs_put_page(cp1, 1);
967 f2fs_put_page(cp2, 1);
971 f2fs_put_page(cp1, 1);
972 f2fs_put_page(cp2, 1);
978 static void __add_dirty_inode(struct inode *inode, enum inode_type type)
980 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
981 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
983 if (is_inode_flag_set(inode, flag))
986 set_inode_flag(inode, flag);
987 if (!f2fs_is_volatile_file(inode))
988 list_add_tail(&F2FS_I(inode)->dirty_list,
989 &sbi->inode_list[type]);
990 stat_inc_dirty_inode(sbi, type);
993 static void __remove_dirty_inode(struct inode *inode, enum inode_type type)
995 int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE;
997 if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag))
1000 list_del_init(&F2FS_I(inode)->dirty_list);
1001 clear_inode_flag(inode, flag);
1002 stat_dec_dirty_inode(F2FS_I_SB(inode), type);
1005 void f2fs_update_dirty_page(struct inode *inode, struct page *page)
1007 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1008 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1010 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1011 !S_ISLNK(inode->i_mode))
1014 spin_lock(&sbi->inode_lock[type]);
1015 if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH))
1016 __add_dirty_inode(inode, type);
1017 inode_inc_dirty_pages(inode);
1018 spin_unlock(&sbi->inode_lock[type]);
1020 f2fs_set_page_private(page, 0);
1023 void f2fs_remove_dirty_inode(struct inode *inode)
1025 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1026 enum inode_type type = S_ISDIR(inode->i_mode) ? DIR_INODE : FILE_INODE;
1028 if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
1029 !S_ISLNK(inode->i_mode))
1032 if (type == FILE_INODE && !test_opt(sbi, DATA_FLUSH))
1035 spin_lock(&sbi->inode_lock[type]);
1036 __remove_dirty_inode(inode, type);
1037 spin_unlock(&sbi->inode_lock[type]);
1040 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type)
1042 struct list_head *head;
1043 struct inode *inode;
1044 struct f2fs_inode_info *fi;
1045 bool is_dir = (type == DIR_INODE);
1046 unsigned long ino = 0;
1048 trace_f2fs_sync_dirty_inodes_enter(sbi->sb, is_dir,
1049 get_pages(sbi, is_dir ?
1050 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1052 if (unlikely(f2fs_cp_error(sbi))) {
1053 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1054 get_pages(sbi, is_dir ?
1055 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1059 spin_lock(&sbi->inode_lock[type]);
1061 head = &sbi->inode_list[type];
1062 if (list_empty(head)) {
1063 spin_unlock(&sbi->inode_lock[type]);
1064 trace_f2fs_sync_dirty_inodes_exit(sbi->sb, is_dir,
1065 get_pages(sbi, is_dir ?
1066 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA));
1069 fi = list_first_entry(head, struct f2fs_inode_info, dirty_list);
1070 inode = igrab(&fi->vfs_inode);
1071 spin_unlock(&sbi->inode_lock[type]);
1073 unsigned long cur_ino = inode->i_ino;
1075 F2FS_I(inode)->cp_task = current;
1077 filemap_fdatawrite(inode->i_mapping);
1079 F2FS_I(inode)->cp_task = NULL;
1082 /* We need to give cpu to another writers. */
1089 * We should submit bio, since it exists several
1090 * wribacking dentry pages in the freeing inode.
1092 f2fs_submit_merged_write(sbi, DATA);
1098 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi)
1100 struct list_head *head = &sbi->inode_list[DIRTY_META];
1101 struct inode *inode;
1102 struct f2fs_inode_info *fi;
1103 s64 total = get_pages(sbi, F2FS_DIRTY_IMETA);
1106 if (unlikely(f2fs_cp_error(sbi)))
1109 spin_lock(&sbi->inode_lock[DIRTY_META]);
1110 if (list_empty(head)) {
1111 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1114 fi = list_first_entry(head, struct f2fs_inode_info,
1116 inode = igrab(&fi->vfs_inode);
1117 spin_unlock(&sbi->inode_lock[DIRTY_META]);
1119 sync_inode_metadata(inode, 0);
1121 /* it's on eviction */
1122 if (is_inode_flag_set(inode, FI_DIRTY_INODE))
1123 f2fs_update_inode_page(inode);
1130 static void __prepare_cp_block(struct f2fs_sb_info *sbi)
1132 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1133 struct f2fs_nm_info *nm_i = NM_I(sbi);
1134 nid_t last_nid = nm_i->next_scan_nid;
1136 next_free_nid(sbi, &last_nid);
1137 ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi));
1138 ckpt->valid_node_count = cpu_to_le32(valid_node_count(sbi));
1139 ckpt->valid_inode_count = cpu_to_le32(valid_inode_count(sbi));
1140 ckpt->next_free_nid = cpu_to_le32(last_nid);
1143 static bool __need_flush_quota(struct f2fs_sb_info *sbi)
1147 if (!is_journalled_quota(sbi))
1150 down_write(&sbi->quota_sem);
1151 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH)) {
1153 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR)) {
1155 } else if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_FLUSH)) {
1156 clear_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1158 } else if (get_pages(sbi, F2FS_DIRTY_QDATA)) {
1161 up_write(&sbi->quota_sem);
1166 * Freeze all the FS-operations for checkpoint.
1168 static int block_operations(struct f2fs_sb_info *sbi)
1170 struct writeback_control wbc = {
1171 .sync_mode = WB_SYNC_ALL,
1172 .nr_to_write = LONG_MAX,
1175 int err = 0, cnt = 0;
1178 * Let's flush inline_data in dirty node pages.
1180 f2fs_flush_inline_data(sbi);
1184 if (__need_flush_quota(sbi)) {
1187 if (++cnt > DEFAULT_RETRY_QUOTA_FLUSH_COUNT) {
1188 set_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1189 set_sbi_flag(sbi, SBI_QUOTA_NEED_FLUSH);
1190 goto retry_flush_dents;
1192 f2fs_unlock_all(sbi);
1194 /* only failed during mount/umount/freeze/quotactl */
1195 locked = down_read_trylock(&sbi->sb->s_umount);
1196 f2fs_quota_sync(sbi->sb, -1);
1198 up_read(&sbi->sb->s_umount);
1200 goto retry_flush_quotas;
1204 /* write all the dirty dentry pages */
1205 if (get_pages(sbi, F2FS_DIRTY_DENTS)) {
1206 f2fs_unlock_all(sbi);
1207 err = f2fs_sync_dirty_inodes(sbi, DIR_INODE);
1211 goto retry_flush_quotas;
1215 * POR: we should ensure that there are no dirty node pages
1216 * until finishing nat/sit flush. inode->i_blocks can be updated.
1218 down_write(&sbi->node_change);
1220 if (get_pages(sbi, F2FS_DIRTY_IMETA)) {
1221 up_write(&sbi->node_change);
1222 f2fs_unlock_all(sbi);
1223 err = f2fs_sync_inode_meta(sbi);
1227 goto retry_flush_quotas;
1231 down_write(&sbi->node_write);
1233 if (get_pages(sbi, F2FS_DIRTY_NODES)) {
1234 up_write(&sbi->node_write);
1235 atomic_inc(&sbi->wb_sync_req[NODE]);
1236 err = f2fs_sync_node_pages(sbi, &wbc, false, FS_CP_NODE_IO);
1237 atomic_dec(&sbi->wb_sync_req[NODE]);
1239 up_write(&sbi->node_change);
1240 f2fs_unlock_all(sbi);
1244 goto retry_flush_nodes;
1248 * sbi->node_change is used only for AIO write_begin path which produces
1249 * dirty node blocks and some checkpoint values by block allocation.
1251 __prepare_cp_block(sbi);
1252 up_write(&sbi->node_change);
1256 static void unblock_operations(struct f2fs_sb_info *sbi)
1258 up_write(&sbi->node_write);
1259 f2fs_unlock_all(sbi);
1262 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type)
1267 if (!get_pages(sbi, type))
1270 if (unlikely(f2fs_cp_error(sbi)))
1273 if (type == F2FS_DIRTY_META)
1274 f2fs_sync_meta_pages(sbi, META, LONG_MAX,
1276 else if (type == F2FS_WB_CP_DATA)
1277 f2fs_submit_merged_write(sbi, DATA);
1279 prepare_to_wait(&sbi->cp_wait, &wait, TASK_UNINTERRUPTIBLE);
1280 io_schedule_timeout(DEFAULT_IO_TIMEOUT);
1282 finish_wait(&sbi->cp_wait, &wait);
1285 static void update_ckpt_flags(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1287 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num;
1288 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1289 unsigned long flags;
1291 spin_lock_irqsave(&sbi->cp_lock, flags);
1293 if ((cpc->reason & CP_UMOUNT) &&
1294 le32_to_cpu(ckpt->cp_pack_total_block_count) >
1295 sbi->blocks_per_seg - NM_I(sbi)->nat_bits_blocks)
1296 disable_nat_bits(sbi, false);
1298 if (cpc->reason & CP_TRIMMED)
1299 __set_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1301 __clear_ckpt_flags(ckpt, CP_TRIMMED_FLAG);
1303 if (cpc->reason & CP_UMOUNT)
1304 __set_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1306 __clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG);
1308 if (cpc->reason & CP_FASTBOOT)
1309 __set_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1311 __clear_ckpt_flags(ckpt, CP_FASTBOOT_FLAG);
1314 __set_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1316 __clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG);
1318 if (is_sbi_flag_set(sbi, SBI_NEED_FSCK))
1319 __set_ckpt_flags(ckpt, CP_FSCK_FLAG);
1321 if (is_sbi_flag_set(sbi, SBI_IS_RESIZEFS))
1322 __set_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1324 __clear_ckpt_flags(ckpt, CP_RESIZEFS_FLAG);
1326 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
1327 __set_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1329 __clear_ckpt_flags(ckpt, CP_DISABLED_FLAG);
1331 if (is_sbi_flag_set(sbi, SBI_CP_DISABLED_QUICK))
1332 __set_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1334 __clear_ckpt_flags(ckpt, CP_DISABLED_QUICK_FLAG);
1336 if (is_sbi_flag_set(sbi, SBI_QUOTA_SKIP_FLUSH))
1337 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1339 __clear_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1341 if (is_sbi_flag_set(sbi, SBI_QUOTA_NEED_REPAIR))
1342 __set_ckpt_flags(ckpt, CP_QUOTA_NEED_FSCK_FLAG);
1344 /* set this flag to activate crc|cp_ver for recovery */
1345 __set_ckpt_flags(ckpt, CP_CRC_RECOVERY_FLAG);
1346 __clear_ckpt_flags(ckpt, CP_NOCRC_RECOVERY_FLAG);
1348 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1351 static void commit_checkpoint(struct f2fs_sb_info *sbi,
1352 void *src, block_t blk_addr)
1354 struct writeback_control wbc = {
1359 * pagevec_lookup_tag and lock_page again will take
1360 * some extra time. Therefore, f2fs_update_meta_pages and
1361 * f2fs_sync_meta_pages are combined in this function.
1363 struct page *page = f2fs_grab_meta_page(sbi, blk_addr);
1366 f2fs_wait_on_page_writeback(page, META, true, true);
1368 memcpy(page_address(page), src, PAGE_SIZE);
1370 set_page_dirty(page);
1371 if (unlikely(!clear_page_dirty_for_io(page)))
1372 f2fs_bug_on(sbi, 1);
1374 /* writeout cp pack 2 page */
1375 err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);
1376 if (unlikely(err && f2fs_cp_error(sbi))) {
1377 f2fs_put_page(page, 1);
1381 f2fs_bug_on(sbi, err);
1382 f2fs_put_page(page, 0);
1384 /* submit checkpoint (with barrier if NOBARRIER is not set) */
1385 f2fs_submit_merged_write(sbi, META_FLUSH);
1388 static inline u64 get_sectors_written(struct block_device *bdev)
1390 return (u64)part_stat_read(bdev, sectors[STAT_WRITE]);
1393 u64 f2fs_get_sectors_written(struct f2fs_sb_info *sbi)
1395 if (f2fs_is_multi_device(sbi)) {
1399 for (i = 0; i < sbi->s_ndevs; i++)
1400 sectors += get_sectors_written(FDEV(i).bdev);
1405 return get_sectors_written(sbi->sb->s_bdev);
1408 static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1410 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1411 struct f2fs_nm_info *nm_i = NM_I(sbi);
1412 unsigned long orphan_num = sbi->im[ORPHAN_INO].ino_num, flags;
1414 unsigned int data_sum_blocks, orphan_blocks;
1417 int cp_payload_blks = __cp_payload(sbi);
1418 struct curseg_info *seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
1422 /* Flush all the NAT/SIT pages */
1423 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1425 /* start to update checkpoint, cp ver is already updated previously */
1426 ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi, true));
1427 ckpt->free_segment_count = cpu_to_le32(free_segments(sbi));
1428 for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) {
1429 ckpt->cur_node_segno[i] =
1430 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE));
1431 ckpt->cur_node_blkoff[i] =
1432 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_NODE));
1433 ckpt->alloc_type[i + CURSEG_HOT_NODE] =
1434 curseg_alloc_type(sbi, i + CURSEG_HOT_NODE);
1436 for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) {
1437 ckpt->cur_data_segno[i] =
1438 cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA));
1439 ckpt->cur_data_blkoff[i] =
1440 cpu_to_le16(curseg_blkoff(sbi, i + CURSEG_HOT_DATA));
1441 ckpt->alloc_type[i + CURSEG_HOT_DATA] =
1442 curseg_alloc_type(sbi, i + CURSEG_HOT_DATA);
1445 /* 2 cp + n data seg summary + orphan inode blocks */
1446 data_sum_blocks = f2fs_npages_for_summary_flush(sbi, false);
1447 spin_lock_irqsave(&sbi->cp_lock, flags);
1448 if (data_sum_blocks < NR_CURSEG_DATA_TYPE)
1449 __set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1451 __clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG);
1452 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1454 orphan_blocks = GET_ORPHAN_BLOCKS(orphan_num);
1455 ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks +
1458 if (__remain_node_summaries(cpc->reason))
1459 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+
1460 cp_payload_blks + data_sum_blocks +
1461 orphan_blocks + NR_CURSEG_NODE_TYPE);
1463 ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS +
1464 cp_payload_blks + data_sum_blocks +
1467 /* update ckpt flag for checkpoint */
1468 update_ckpt_flags(sbi, cpc);
1470 /* update SIT/NAT bitmap */
1471 get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP));
1472 get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP));
1474 crc32 = f2fs_checkpoint_chksum(sbi, ckpt);
1475 *((__le32 *)((unsigned char *)ckpt +
1476 le32_to_cpu(ckpt->checksum_offset)))
1477 = cpu_to_le32(crc32);
1479 start_blk = __start_cp_next_addr(sbi);
1481 /* write nat bits */
1482 if (enabled_nat_bits(sbi, cpc)) {
1483 __u64 cp_ver = cur_cp_version(ckpt);
1486 cp_ver |= ((__u64)crc32 << 32);
1487 *(__le64 *)nm_i->nat_bits = cpu_to_le64(cp_ver);
1489 blk = start_blk + sbi->blocks_per_seg - nm_i->nat_bits_blocks;
1490 for (i = 0; i < nm_i->nat_bits_blocks; i++)
1491 f2fs_update_meta_page(sbi, nm_i->nat_bits +
1492 (i << F2FS_BLKSIZE_BITS), blk + i);
1495 /* write out checkpoint buffer at block 0 */
1496 f2fs_update_meta_page(sbi, ckpt, start_blk++);
1498 for (i = 1; i < 1 + cp_payload_blks; i++)
1499 f2fs_update_meta_page(sbi, (char *)ckpt + i * F2FS_BLKSIZE,
1503 write_orphan_inodes(sbi, start_blk);
1504 start_blk += orphan_blocks;
1507 f2fs_write_data_summaries(sbi, start_blk);
1508 start_blk += data_sum_blocks;
1510 /* Record write statistics in the hot node summary */
1511 kbytes_written = sbi->kbytes_written;
1512 kbytes_written += (f2fs_get_sectors_written(sbi) -
1513 sbi->sectors_written_start) >> 1;
1514 seg_i->journal->info.kbytes_written = cpu_to_le64(kbytes_written);
1516 if (__remain_node_summaries(cpc->reason)) {
1517 f2fs_write_node_summaries(sbi, start_blk);
1518 start_blk += NR_CURSEG_NODE_TYPE;
1521 /* update user_block_counts */
1522 sbi->last_valid_block_count = sbi->total_valid_block_count;
1523 percpu_counter_set(&sbi->alloc_valid_block_count, 0);
1525 /* Here, we have one bio having CP pack except cp pack 2 page */
1526 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);
1527 /* Wait for all dirty meta pages to be submitted for IO */
1528 f2fs_wait_on_all_pages(sbi, F2FS_DIRTY_META);
1530 /* wait for previous submitted meta pages writeback */
1531 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1533 /* flush all device cache */
1534 err = f2fs_flush_device_cache(sbi);
1538 /* barrier and flush checkpoint cp pack 2 page if it can */
1539 commit_checkpoint(sbi, ckpt, start_blk);
1540 f2fs_wait_on_all_pages(sbi, F2FS_WB_CP_DATA);
1543 * invalidate intermediate page cache borrowed from meta inode which are
1544 * used for migration of encrypted, verity or compressed inode's blocks.
1546 if (f2fs_sb_has_encrypt(sbi) || f2fs_sb_has_verity(sbi) ||
1547 f2fs_sb_has_compression(sbi))
1548 invalidate_mapping_pages(META_MAPPING(sbi),
1549 MAIN_BLKADDR(sbi), MAX_BLKADDR(sbi) - 1);
1551 f2fs_release_ino_entry(sbi, false);
1553 f2fs_reset_fsync_node_info(sbi);
1555 clear_sbi_flag(sbi, SBI_IS_DIRTY);
1556 clear_sbi_flag(sbi, SBI_NEED_CP);
1557 clear_sbi_flag(sbi, SBI_QUOTA_SKIP_FLUSH);
1559 spin_lock(&sbi->stat_lock);
1560 sbi->unusable_block_count = 0;
1561 spin_unlock(&sbi->stat_lock);
1563 __set_cp_next_pack(sbi);
1566 * redirty superblock if metadata like node page or inode cache is
1567 * updated during writing checkpoint.
1569 if (get_pages(sbi, F2FS_DIRTY_NODES) ||
1570 get_pages(sbi, F2FS_DIRTY_IMETA))
1571 set_sbi_flag(sbi, SBI_IS_DIRTY);
1573 f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));
1575 return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;
1578 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
1580 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
1581 unsigned long long ckpt_ver;
1584 if (f2fs_readonly(sbi->sb) || f2fs_hw_is_readonly(sbi))
1587 if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1588 if (cpc->reason != CP_PAUSE)
1590 f2fs_warn(sbi, "Start checkpoint disabled!");
1592 if (cpc->reason != CP_RESIZE)
1593 down_write(&sbi->cp_global_sem);
1595 if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
1596 ((cpc->reason & CP_FASTBOOT) || (cpc->reason & CP_SYNC) ||
1597 ((cpc->reason & CP_DISCARD) && !sbi->discard_blks)))
1599 if (unlikely(f2fs_cp_error(sbi))) {
1604 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops");
1606 err = block_operations(sbi);
1610 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops");
1612 f2fs_flush_merged_writes(sbi);
1614 /* this is the case of multiple fstrims without any changes */
1615 if (cpc->reason & CP_DISCARD) {
1616 if (!f2fs_exist_trim_candidates(sbi, cpc)) {
1617 unblock_operations(sbi);
1621 if (NM_I(sbi)->nat_cnt[DIRTY_NAT] == 0 &&
1622 SIT_I(sbi)->dirty_sentries == 0 &&
1623 prefree_segments(sbi) == 0) {
1624 f2fs_flush_sit_entries(sbi, cpc);
1625 f2fs_clear_prefree_segments(sbi, cpc);
1626 unblock_operations(sbi);
1632 * update checkpoint pack index
1633 * Increase the version number so that
1634 * SIT entries and seg summaries are written at correct place
1636 ckpt_ver = cur_cp_version(ckpt);
1637 ckpt->checkpoint_ver = cpu_to_le64(++ckpt_ver);
1639 /* write cached NAT/SIT entries to NAT/SIT area */
1640 err = f2fs_flush_nat_entries(sbi, cpc);
1644 f2fs_flush_sit_entries(sbi, cpc);
1646 /* save inmem log status */
1647 f2fs_save_inmem_curseg(sbi);
1649 err = do_checkpoint(sbi, cpc);
1651 f2fs_release_discard_addrs(sbi);
1653 f2fs_clear_prefree_segments(sbi, cpc);
1655 f2fs_restore_inmem_curseg(sbi);
1657 unblock_operations(sbi);
1658 stat_inc_cp_count(sbi->stat_info);
1660 if (cpc->reason & CP_RECOVERY)
1661 f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver);
1663 /* update CP_TIME to trigger checkpoint periodically */
1664 f2fs_update_time(sbi, CP_TIME);
1665 trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
1667 if (cpc->reason != CP_RESIZE)
1668 up_write(&sbi->cp_global_sem);
1672 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi)
1676 for (i = 0; i < MAX_INO_ENTRY; i++) {
1677 struct inode_management *im = &sbi->im[i];
1679 INIT_RADIX_TREE(&im->ino_root, GFP_ATOMIC);
1680 spin_lock_init(&im->ino_lock);
1681 INIT_LIST_HEAD(&im->ino_list);
1685 sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
1686 NR_CURSEG_PERSIST_TYPE - __cp_payload(sbi)) *
1687 F2FS_ORPHANS_PER_BLOCK;
1690 int __init f2fs_create_checkpoint_caches(void)
1692 ino_entry_slab = f2fs_kmem_cache_create("f2fs_ino_entry",
1693 sizeof(struct ino_entry));
1694 if (!ino_entry_slab)
1696 f2fs_inode_entry_slab = f2fs_kmem_cache_create("f2fs_inode_entry",
1697 sizeof(struct inode_entry));
1698 if (!f2fs_inode_entry_slab) {
1699 kmem_cache_destroy(ino_entry_slab);
1705 void f2fs_destroy_checkpoint_caches(void)
1707 kmem_cache_destroy(ino_entry_slab);
1708 kmem_cache_destroy(f2fs_inode_entry_slab);
1711 static int __write_checkpoint_sync(struct f2fs_sb_info *sbi)
1713 struct cp_control cpc = { .reason = CP_SYNC, };
1716 down_write(&sbi->gc_lock);
1717 err = f2fs_write_checkpoint(sbi, &cpc);
1718 up_write(&sbi->gc_lock);
1723 static void __checkpoint_and_complete_reqs(struct f2fs_sb_info *sbi)
1725 struct ckpt_req_control *cprc = &sbi->cprc_info;
1726 struct ckpt_req *req, *next;
1727 struct llist_node *dispatch_list;
1728 u64 sum_diff = 0, diff, count = 0;
1731 dispatch_list = llist_del_all(&cprc->issue_list);
1734 dispatch_list = llist_reverse_order(dispatch_list);
1736 ret = __write_checkpoint_sync(sbi);
1737 atomic_inc(&cprc->issued_ckpt);
1739 llist_for_each_entry_safe(req, next, dispatch_list, llnode) {
1740 diff = (u64)ktime_ms_delta(ktime_get(), req->queue_time);
1742 complete(&req->wait);
1747 atomic_sub(count, &cprc->queued_ckpt);
1748 atomic_add(count, &cprc->total_ckpt);
1750 spin_lock(&cprc->stat_lock);
1751 cprc->cur_time = (unsigned int)div64_u64(sum_diff, count);
1752 if (cprc->peak_time < cprc->cur_time)
1753 cprc->peak_time = cprc->cur_time;
1754 spin_unlock(&cprc->stat_lock);
1757 static int issue_checkpoint_thread(void *data)
1759 struct f2fs_sb_info *sbi = data;
1760 struct ckpt_req_control *cprc = &sbi->cprc_info;
1761 wait_queue_head_t *q = &cprc->ckpt_wait_queue;
1763 if (kthread_should_stop())
1766 if (!llist_empty(&cprc->issue_list))
1767 __checkpoint_and_complete_reqs(sbi);
1769 wait_event_interruptible(*q,
1770 kthread_should_stop() || !llist_empty(&cprc->issue_list));
1774 static void flush_remained_ckpt_reqs(struct f2fs_sb_info *sbi,
1775 struct ckpt_req *wait_req)
1777 struct ckpt_req_control *cprc = &sbi->cprc_info;
1779 if (!llist_empty(&cprc->issue_list)) {
1780 __checkpoint_and_complete_reqs(sbi);
1782 /* already dispatched by issue_checkpoint_thread */
1784 wait_for_completion(&wait_req->wait);
1788 static void init_ckpt_req(struct ckpt_req *req)
1790 memset(req, 0, sizeof(struct ckpt_req));
1792 init_completion(&req->wait);
1793 req->queue_time = ktime_get();
1796 int f2fs_issue_checkpoint(struct f2fs_sb_info *sbi)
1798 struct ckpt_req_control *cprc = &sbi->cprc_info;
1799 struct ckpt_req req;
1800 struct cp_control cpc;
1802 cpc.reason = __get_cp_reason(sbi);
1803 if (!test_opt(sbi, MERGE_CHECKPOINT) || cpc.reason != CP_SYNC) {
1806 down_write(&sbi->gc_lock);
1807 ret = f2fs_write_checkpoint(sbi, &cpc);
1808 up_write(&sbi->gc_lock);
1813 if (!cprc->f2fs_issue_ckpt)
1814 return __write_checkpoint_sync(sbi);
1816 init_ckpt_req(&req);
1818 llist_add(&req.llnode, &cprc->issue_list);
1819 atomic_inc(&cprc->queued_ckpt);
1821 /* update issue_list before we wake up issue_checkpoint thread */
1824 if (waitqueue_active(&cprc->ckpt_wait_queue))
1825 wake_up(&cprc->ckpt_wait_queue);
1827 if (cprc->f2fs_issue_ckpt)
1828 wait_for_completion(&req.wait);
1830 flush_remained_ckpt_reqs(sbi, &req);
1835 int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)
1837 dev_t dev = sbi->sb->s_bdev->bd_dev;
1838 struct ckpt_req_control *cprc = &sbi->cprc_info;
1840 if (cprc->f2fs_issue_ckpt)
1843 cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,
1844 "f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));
1845 if (IS_ERR(cprc->f2fs_issue_ckpt)) {
1846 cprc->f2fs_issue_ckpt = NULL;
1850 set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);
1855 void f2fs_stop_ckpt_thread(struct f2fs_sb_info *sbi)
1857 struct ckpt_req_control *cprc = &sbi->cprc_info;
1859 if (cprc->f2fs_issue_ckpt) {
1860 struct task_struct *ckpt_task = cprc->f2fs_issue_ckpt;
1862 cprc->f2fs_issue_ckpt = NULL;
1863 kthread_stop(ckpt_task);
1865 flush_remained_ckpt_reqs(sbi, NULL);
1869 void f2fs_init_ckpt_req_control(struct f2fs_sb_info *sbi)
1871 struct ckpt_req_control *cprc = &sbi->cprc_info;
1873 atomic_set(&cprc->issued_ckpt, 0);
1874 atomic_set(&cprc->total_ckpt, 0);
1875 atomic_set(&cprc->queued_ckpt, 0);
1876 cprc->ckpt_thread_ioprio = DEFAULT_CHECKPOINT_IOPRIO;
1877 init_waitqueue_head(&cprc->ckpt_wait_queue);
1878 init_llist_head(&cprc->issue_list);
1879 spin_lock_init(&cprc->stat_lock);