4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/bio.h>
13 #include <linux/mpage.h>
14 #include <linux/writeback.h>
15 #include <linux/blkdev.h>
16 #include <linux/f2fs_fs.h>
17 #include <linux/pagevec.h>
18 #include <linux/swap.h>
24 static struct kmem_cache
*orphan_entry_slab
;
25 static struct kmem_cache
*inode_entry_slab
;
28 * We guarantee no failure on the returned page.
30 struct page
*grab_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
32 struct address_space
*mapping
= sbi
->meta_inode
->i_mapping
;
33 struct page
*page
= NULL
;
35 page
= grab_cache_page(mapping
, index
);
41 /* We wait writeback only inside grab_meta_page() */
42 wait_on_page_writeback(page
);
43 SetPageUptodate(page
);
48 * We guarantee no failure on the returned page.
50 struct page
*get_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
52 struct address_space
*mapping
= sbi
->meta_inode
->i_mapping
;
55 page
= grab_cache_page(mapping
, index
);
60 if (f2fs_readpage(sbi
, page
, index
, READ_SYNC
)) {
61 f2fs_put_page(page
, 1);
64 mark_page_accessed(page
);
66 /* We do not allow returning an errorneous page */
70 static int f2fs_write_meta_page(struct page
*page
,
71 struct writeback_control
*wbc
)
73 struct inode
*inode
= page
->mapping
->host
;
74 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
77 wait_on_page_writeback(page
);
79 err
= write_meta_page(sbi
, page
, wbc
);
85 dec_page_count(sbi
, F2FS_DIRTY_META
);
87 /* In this case, we should not unlock this page */
88 if (err
!= AOP_WRITEPAGE_ACTIVATE
)
93 static int f2fs_write_meta_pages(struct address_space
*mapping
,
94 struct writeback_control
*wbc
)
96 struct f2fs_sb_info
*sbi
= F2FS_SB(mapping
->host
->i_sb
);
97 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
100 if (wbc
->for_kupdate
)
103 if (get_pages(sbi
, F2FS_DIRTY_META
) == 0)
106 /* if mounting is failed, skip writing node pages */
107 mutex_lock(&sbi
->cp_mutex
);
108 written
= sync_meta_pages(sbi
, META
, bio_get_nr_vecs(bdev
));
109 mutex_unlock(&sbi
->cp_mutex
);
110 wbc
->nr_to_write
-= written
;
114 long sync_meta_pages(struct f2fs_sb_info
*sbi
, enum page_type type
,
117 struct address_space
*mapping
= sbi
->meta_inode
->i_mapping
;
118 pgoff_t index
= 0, end
= LONG_MAX
;
121 struct writeback_control wbc
= {
125 pagevec_init(&pvec
, 0);
127 while (index
<= end
) {
129 nr_pages
= pagevec_lookup_tag(&pvec
, mapping
, &index
,
131 min(end
- index
, (pgoff_t
)PAGEVEC_SIZE
-1) + 1);
135 for (i
= 0; i
< nr_pages
; i
++) {
136 struct page
*page
= pvec
.pages
[i
];
138 BUG_ON(page
->mapping
!= mapping
);
139 BUG_ON(!PageDirty(page
));
140 clear_page_dirty_for_io(page
);
141 f2fs_write_meta_page(page
, &wbc
);
142 if (nwritten
++ >= nr_to_write
)
145 pagevec_release(&pvec
);
150 f2fs_submit_bio(sbi
, type
, nr_to_write
== LONG_MAX
);
155 static int f2fs_set_meta_page_dirty(struct page
*page
)
157 struct address_space
*mapping
= page
->mapping
;
158 struct f2fs_sb_info
*sbi
= F2FS_SB(mapping
->host
->i_sb
);
160 SetPageUptodate(page
);
161 if (!PageDirty(page
)) {
162 __set_page_dirty_nobuffers(page
);
163 inc_page_count(sbi
, F2FS_DIRTY_META
);
164 F2FS_SET_SB_DIRT(sbi
);
170 const struct address_space_operations f2fs_meta_aops
= {
171 .writepage
= f2fs_write_meta_page
,
172 .writepages
= f2fs_write_meta_pages
,
173 .set_page_dirty
= f2fs_set_meta_page_dirty
,
176 int check_orphan_space(struct f2fs_sb_info
*sbi
)
178 unsigned int max_orphans
;
182 * considering 512 blocks in a segment 5 blocks are needed for cp
183 * and log segment summaries. Remaining blocks are used to keep
184 * orphan entries with the limitation one reserved segment
185 * for cp pack we can have max 1020*507 orphan entries
187 max_orphans
= (sbi
->blocks_per_seg
- 5) * F2FS_ORPHANS_PER_BLOCK
;
188 mutex_lock(&sbi
->orphan_inode_mutex
);
189 if (sbi
->n_orphans
>= max_orphans
)
191 mutex_unlock(&sbi
->orphan_inode_mutex
);
195 void add_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
197 struct list_head
*head
, *this;
198 struct orphan_inode_entry
*new = NULL
, *orphan
= NULL
;
200 mutex_lock(&sbi
->orphan_inode_mutex
);
201 head
= &sbi
->orphan_inode_list
;
202 list_for_each(this, head
) {
203 orphan
= list_entry(this, struct orphan_inode_entry
, list
);
204 if (orphan
->ino
== ino
)
206 if (orphan
->ino
> ino
)
211 new = kmem_cache_alloc(orphan_entry_slab
, GFP_ATOMIC
);
218 /* add new_oentry into list which is sorted by inode number */
220 struct orphan_inode_entry
*prev
;
222 /* get previous entry */
223 prev
= list_entry(orphan
->list
.prev
, typeof(*prev
), list
);
224 if (&prev
->list
!= head
)
225 /* insert new orphan inode entry */
226 list_add(&new->list
, &prev
->list
);
228 list_add(&new->list
, head
);
230 list_add_tail(&new->list
, head
);
234 mutex_unlock(&sbi
->orphan_inode_mutex
);
237 void remove_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
239 struct list_head
*this, *next
, *head
;
240 struct orphan_inode_entry
*orphan
;
242 mutex_lock(&sbi
->orphan_inode_mutex
);
243 head
= &sbi
->orphan_inode_list
;
244 list_for_each_safe(this, next
, head
) {
245 orphan
= list_entry(this, struct orphan_inode_entry
, list
);
246 if (orphan
->ino
== ino
) {
247 list_del(&orphan
->list
);
248 kmem_cache_free(orphan_entry_slab
, orphan
);
253 mutex_unlock(&sbi
->orphan_inode_mutex
);
256 static void recover_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
258 struct inode
*inode
= f2fs_iget(sbi
->sb
, ino
);
259 BUG_ON(IS_ERR(inode
));
262 /* truncate all the data during iput */
266 int recover_orphan_inodes(struct f2fs_sb_info
*sbi
)
268 block_t start_blk
, orphan_blkaddr
, i
, j
;
270 if (!is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
))
274 start_blk
= __start_cp_addr(sbi
) + 1;
275 orphan_blkaddr
= __start_sum_addr(sbi
) - 1;
277 for (i
= 0; i
< orphan_blkaddr
; i
++) {
278 struct page
*page
= get_meta_page(sbi
, start_blk
+ i
);
279 struct f2fs_orphan_block
*orphan_blk
;
281 orphan_blk
= (struct f2fs_orphan_block
*)page_address(page
);
282 for (j
= 0; j
< le32_to_cpu(orphan_blk
->entry_count
); j
++) {
283 nid_t ino
= le32_to_cpu(orphan_blk
->ino
[j
]);
284 recover_orphan_inode(sbi
, ino
);
286 f2fs_put_page(page
, 1);
288 /* clear Orphan Flag */
289 clear_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
);
294 static void write_orphan_inodes(struct f2fs_sb_info
*sbi
, block_t start_blk
)
296 struct list_head
*head
, *this, *next
;
297 struct f2fs_orphan_block
*orphan_blk
= NULL
;
298 struct page
*page
= NULL
;
299 unsigned int nentries
= 0;
300 unsigned short index
= 1;
301 unsigned short orphan_blocks
;
303 orphan_blocks
= (unsigned short)((sbi
->n_orphans
+
304 (F2FS_ORPHANS_PER_BLOCK
- 1)) / F2FS_ORPHANS_PER_BLOCK
);
306 mutex_lock(&sbi
->orphan_inode_mutex
);
307 head
= &sbi
->orphan_inode_list
;
309 /* loop for each orphan inode entry and write them in Jornal block */
310 list_for_each_safe(this, next
, head
) {
311 struct orphan_inode_entry
*orphan
;
313 orphan
= list_entry(this, struct orphan_inode_entry
, list
);
315 if (nentries
== F2FS_ORPHANS_PER_BLOCK
) {
317 * an orphan block is full of 1020 entries,
318 * then we need to flush current orphan blocks
319 * and bring another one in memory
321 orphan_blk
->blk_addr
= cpu_to_le16(index
);
322 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
323 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
324 set_page_dirty(page
);
325 f2fs_put_page(page
, 1);
334 page
= grab_meta_page(sbi
, start_blk
);
335 orphan_blk
= (struct f2fs_orphan_block
*)page_address(page
);
336 memset(orphan_blk
, 0, sizeof(*orphan_blk
));
338 orphan_blk
->ino
[nentries
++] = cpu_to_le32(orphan
->ino
);
343 orphan_blk
->blk_addr
= cpu_to_le16(index
);
344 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
345 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
346 set_page_dirty(page
);
347 f2fs_put_page(page
, 1);
349 mutex_unlock(&sbi
->orphan_inode_mutex
);
352 static struct page
*validate_checkpoint(struct f2fs_sb_info
*sbi
,
353 block_t cp_addr
, unsigned long long *version
)
355 struct page
*cp_page_1
, *cp_page_2
= NULL
;
356 unsigned long blk_size
= sbi
->blocksize
;
357 struct f2fs_checkpoint
*cp_block
;
358 unsigned long long cur_version
= 0, pre_version
= 0;
359 unsigned int crc
= 0;
362 /* Read the 1st cp block in this CP pack */
363 cp_page_1
= get_meta_page(sbi
, cp_addr
);
365 /* get the version number */
366 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_1
);
367 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
368 if (crc_offset
>= blk_size
)
371 crc
= *(unsigned int *)((unsigned char *)cp_block
+ crc_offset
);
372 if (!f2fs_crc_valid(crc
, cp_block
, crc_offset
))
375 pre_version
= le64_to_cpu(cp_block
->checkpoint_ver
);
377 /* Read the 2nd cp block in this CP pack */
378 cp_addr
+= le32_to_cpu(cp_block
->cp_pack_total_block_count
) - 1;
379 cp_page_2
= get_meta_page(sbi
, cp_addr
);
381 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_2
);
382 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
383 if (crc_offset
>= blk_size
)
386 crc
= *(unsigned int *)((unsigned char *)cp_block
+ crc_offset
);
387 if (!f2fs_crc_valid(crc
, cp_block
, crc_offset
))
390 cur_version
= le64_to_cpu(cp_block
->checkpoint_ver
);
392 if (cur_version
== pre_version
) {
393 *version
= cur_version
;
394 f2fs_put_page(cp_page_2
, 1);
398 f2fs_put_page(cp_page_2
, 1);
400 f2fs_put_page(cp_page_1
, 1);
404 int get_valid_checkpoint(struct f2fs_sb_info
*sbi
)
406 struct f2fs_checkpoint
*cp_block
;
407 struct f2fs_super_block
*fsb
= sbi
->raw_super
;
408 struct page
*cp1
, *cp2
, *cur_page
;
409 unsigned long blk_size
= sbi
->blocksize
;
410 unsigned long long cp1_version
= 0, cp2_version
= 0;
411 unsigned long long cp_start_blk_no
;
413 sbi
->ckpt
= kzalloc(blk_size
, GFP_KERNEL
);
417 * Finding out valid cp block involves read both
418 * sets( cp pack1 and cp pack 2)
420 cp_start_blk_no
= le32_to_cpu(fsb
->cp_blkaddr
);
421 cp1
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp1_version
);
423 /* The second checkpoint pack should start at the next segment */
424 cp_start_blk_no
+= 1 << le32_to_cpu(fsb
->log_blocks_per_seg
);
425 cp2
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp2_version
);
428 if (ver_after(cp2_version
, cp1_version
))
440 cp_block
= (struct f2fs_checkpoint
*)page_address(cur_page
);
441 memcpy(sbi
->ckpt
, cp_block
, blk_size
);
443 f2fs_put_page(cp1
, 1);
444 f2fs_put_page(cp2
, 1);
452 void set_dirty_dir_page(struct inode
*inode
, struct page
*page
)
454 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
455 struct list_head
*head
= &sbi
->dir_inode_list
;
456 struct dir_inode_entry
*new;
457 struct list_head
*this;
459 if (!S_ISDIR(inode
->i_mode
))
462 new = kmem_cache_alloc(inode_entry_slab
, GFP_NOFS
);
468 INIT_LIST_HEAD(&new->list
);
470 spin_lock(&sbi
->dir_inode_lock
);
471 list_for_each(this, head
) {
472 struct dir_inode_entry
*entry
;
473 entry
= list_entry(this, struct dir_inode_entry
, list
);
474 if (entry
->inode
== inode
) {
475 kmem_cache_free(inode_entry_slab
, new);
479 list_add_tail(&new->list
, head
);
482 BUG_ON(!S_ISDIR(inode
->i_mode
));
484 inc_page_count(sbi
, F2FS_DIRTY_DENTS
);
485 inode_inc_dirty_dents(inode
);
486 SetPagePrivate(page
);
488 spin_unlock(&sbi
->dir_inode_lock
);
491 void remove_dirty_dir_inode(struct inode
*inode
)
493 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
494 struct list_head
*head
= &sbi
->dir_inode_list
;
495 struct list_head
*this;
497 if (!S_ISDIR(inode
->i_mode
))
500 spin_lock(&sbi
->dir_inode_lock
);
501 if (atomic_read(&F2FS_I(inode
)->dirty_dents
))
504 list_for_each(this, head
) {
505 struct dir_inode_entry
*entry
;
506 entry
= list_entry(this, struct dir_inode_entry
, list
);
507 if (entry
->inode
== inode
) {
508 list_del(&entry
->list
);
509 kmem_cache_free(inode_entry_slab
, entry
);
515 spin_unlock(&sbi
->dir_inode_lock
);
518 void sync_dirty_dir_inodes(struct f2fs_sb_info
*sbi
)
520 struct list_head
*head
= &sbi
->dir_inode_list
;
521 struct dir_inode_entry
*entry
;
524 spin_lock(&sbi
->dir_inode_lock
);
525 if (list_empty(head
)) {
526 spin_unlock(&sbi
->dir_inode_lock
);
529 entry
= list_entry(head
->next
, struct dir_inode_entry
, list
);
530 inode
= igrab(entry
->inode
);
531 spin_unlock(&sbi
->dir_inode_lock
);
533 filemap_flush(inode
->i_mapping
);
537 * We should submit bio, since it exists several
538 * wribacking dentry pages in the freeing inode.
540 f2fs_submit_bio(sbi
, DATA
, true);
546 * Freeze all the FS-operations for checkpoint.
548 void block_operations(struct f2fs_sb_info
*sbi
)
551 struct writeback_control wbc
= {
552 .sync_mode
= WB_SYNC_ALL
,
553 .nr_to_write
= LONG_MAX
,
557 /* Stop renaming operation */
558 mutex_lock_op(sbi
, RENAME
);
559 mutex_lock_op(sbi
, DENTRY_OPS
);
562 /* write all the dirty dentry pages */
563 sync_dirty_dir_inodes(sbi
);
565 mutex_lock_op(sbi
, DATA_WRITE
);
566 if (get_pages(sbi
, F2FS_DIRTY_DENTS
)) {
567 mutex_unlock_op(sbi
, DATA_WRITE
);
571 /* block all the operations */
572 for (t
= DATA_NEW
; t
<= NODE_TRUNC
; t
++)
573 mutex_lock_op(sbi
, t
);
575 mutex_lock(&sbi
->write_inode
);
578 * POR: we should ensure that there is no dirty node pages
579 * until finishing nat/sit flush.
582 sync_node_pages(sbi
, 0, &wbc
);
584 mutex_lock_op(sbi
, NODE_WRITE
);
586 if (get_pages(sbi
, F2FS_DIRTY_NODES
)) {
587 mutex_unlock_op(sbi
, NODE_WRITE
);
590 mutex_unlock(&sbi
->write_inode
);
593 static void unblock_operations(struct f2fs_sb_info
*sbi
)
596 for (t
= NODE_WRITE
; t
>= RENAME
; t
--)
597 mutex_unlock_op(sbi
, t
);
600 static void do_checkpoint(struct f2fs_sb_info
*sbi
, bool is_umount
)
602 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
605 struct page
*cp_page
;
606 unsigned int data_sum_blocks
, orphan_blocks
;
607 unsigned int crc32
= 0;
611 /* Flush all the NAT/SIT pages */
612 while (get_pages(sbi
, F2FS_DIRTY_META
))
613 sync_meta_pages(sbi
, META
, LONG_MAX
);
615 next_free_nid(sbi
, &last_nid
);
619 * version number is already updated
621 ckpt
->elapsed_time
= cpu_to_le64(get_mtime(sbi
));
622 ckpt
->valid_block_count
= cpu_to_le64(valid_user_blocks(sbi
));
623 ckpt
->free_segment_count
= cpu_to_le32(free_segments(sbi
));
624 for (i
= 0; i
< 3; i
++) {
625 ckpt
->cur_node_segno
[i
] =
626 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_NODE
));
627 ckpt
->cur_node_blkoff
[i
] =
628 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_NODE
));
629 ckpt
->alloc_type
[i
+ CURSEG_HOT_NODE
] =
630 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_NODE
);
632 for (i
= 0; i
< 3; i
++) {
633 ckpt
->cur_data_segno
[i
] =
634 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_DATA
));
635 ckpt
->cur_data_blkoff
[i
] =
636 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_DATA
));
637 ckpt
->alloc_type
[i
+ CURSEG_HOT_DATA
] =
638 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_DATA
);
641 ckpt
->valid_node_count
= cpu_to_le32(valid_node_count(sbi
));
642 ckpt
->valid_inode_count
= cpu_to_le32(valid_inode_count(sbi
));
643 ckpt
->next_free_nid
= cpu_to_le32(last_nid
);
645 /* 2 cp + n data seg summary + orphan inode blocks */
646 data_sum_blocks
= npages_for_summary_flush(sbi
);
647 if (data_sum_blocks
< 3)
648 set_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
650 clear_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
652 orphan_blocks
= (sbi
->n_orphans
+ F2FS_ORPHANS_PER_BLOCK
- 1)
653 / F2FS_ORPHANS_PER_BLOCK
;
654 ckpt
->cp_pack_start_sum
= cpu_to_le32(1 + orphan_blocks
);
657 set_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
658 ckpt
->cp_pack_total_block_count
= cpu_to_le32(2 +
659 data_sum_blocks
+ orphan_blocks
+ NR_CURSEG_NODE_TYPE
);
661 clear_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
662 ckpt
->cp_pack_total_block_count
= cpu_to_le32(2 +
663 data_sum_blocks
+ orphan_blocks
);
667 set_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
669 clear_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
671 /* update SIT/NAT bitmap */
672 get_sit_bitmap(sbi
, __bitmap_ptr(sbi
, SIT_BITMAP
));
673 get_nat_bitmap(sbi
, __bitmap_ptr(sbi
, NAT_BITMAP
));
675 crc32
= f2fs_crc32(ckpt
, le32_to_cpu(ckpt
->checksum_offset
));
676 *(__le32
*)((unsigned char *)ckpt
+
677 le32_to_cpu(ckpt
->checksum_offset
))
678 = cpu_to_le32(crc32
);
680 start_blk
= __start_cp_addr(sbi
);
682 /* write out checkpoint buffer at block 0 */
683 cp_page
= grab_meta_page(sbi
, start_blk
++);
684 kaddr
= page_address(cp_page
);
685 memcpy(kaddr
, ckpt
, (1 << sbi
->log_blocksize
));
686 set_page_dirty(cp_page
);
687 f2fs_put_page(cp_page
, 1);
689 if (sbi
->n_orphans
) {
690 write_orphan_inodes(sbi
, start_blk
);
691 start_blk
+= orphan_blocks
;
694 write_data_summaries(sbi
, start_blk
);
695 start_blk
+= data_sum_blocks
;
697 write_node_summaries(sbi
, start_blk
);
698 start_blk
+= NR_CURSEG_NODE_TYPE
;
701 /* writeout checkpoint block */
702 cp_page
= grab_meta_page(sbi
, start_blk
);
703 kaddr
= page_address(cp_page
);
704 memcpy(kaddr
, ckpt
, (1 << sbi
->log_blocksize
));
705 set_page_dirty(cp_page
);
706 f2fs_put_page(cp_page
, 1);
708 /* wait for previous submitted node/meta pages writeback */
709 while (get_pages(sbi
, F2FS_WRITEBACK
))
710 congestion_wait(BLK_RW_ASYNC
, HZ
/ 50);
712 filemap_fdatawait_range(sbi
->node_inode
->i_mapping
, 0, LONG_MAX
);
713 filemap_fdatawait_range(sbi
->meta_inode
->i_mapping
, 0, LONG_MAX
);
715 /* update user_block_counts */
716 sbi
->last_valid_block_count
= sbi
->total_valid_block_count
;
717 sbi
->alloc_valid_block_count
= 0;
719 /* Here, we only have one bio having CP pack */
720 if (is_set_ckpt_flags(ckpt
, CP_ERROR_FLAG
))
721 sbi
->sb
->s_flags
|= MS_RDONLY
;
723 sync_meta_pages(sbi
, META_FLUSH
, LONG_MAX
);
725 clear_prefree_segments(sbi
);
726 F2FS_RESET_SB_DIRT(sbi
);
730 * We guarantee that this checkpoint procedure should not fail.
732 void write_checkpoint(struct f2fs_sb_info
*sbi
, bool blocked
, bool is_umount
)
734 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
735 unsigned long long ckpt_ver
;
738 mutex_lock(&sbi
->cp_mutex
);
739 block_operations(sbi
);
742 f2fs_submit_bio(sbi
, DATA
, true);
743 f2fs_submit_bio(sbi
, NODE
, true);
744 f2fs_submit_bio(sbi
, META
, true);
747 * update checkpoint pack index
748 * Increase the version number so that
749 * SIT entries and seg summaries are written at correct place
751 ckpt_ver
= le64_to_cpu(ckpt
->checkpoint_ver
);
752 ckpt
->checkpoint_ver
= cpu_to_le64(++ckpt_ver
);
754 /* write cached NAT/SIT entries to NAT/SIT area */
755 flush_nat_entries(sbi
);
756 flush_sit_entries(sbi
);
758 reset_victim_segmap(sbi
);
760 /* unlock all the fs_lock[] in do_checkpoint() */
761 do_checkpoint(sbi
, is_umount
);
763 unblock_operations(sbi
);
764 mutex_unlock(&sbi
->cp_mutex
);
767 void init_orphan_info(struct f2fs_sb_info
*sbi
)
769 mutex_init(&sbi
->orphan_inode_mutex
);
770 INIT_LIST_HEAD(&sbi
->orphan_inode_list
);
774 int __init
create_checkpoint_caches(void)
776 orphan_entry_slab
= f2fs_kmem_cache_create("f2fs_orphan_entry",
777 sizeof(struct orphan_inode_entry
), NULL
);
778 if (unlikely(!orphan_entry_slab
))
780 inode_entry_slab
= f2fs_kmem_cache_create("f2fs_dirty_dir_entry",
781 sizeof(struct dir_inode_entry
), NULL
);
782 if (unlikely(!inode_entry_slab
)) {
783 kmem_cache_destroy(orphan_entry_slab
);
789 void destroy_checkpoint_caches(void)
791 kmem_cache_destroy(orphan_entry_slab
);
792 kmem_cache_destroy(inode_entry_slab
);