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>
23 #include <trace/events/f2fs.h>
25 static struct kmem_cache
*orphan_entry_slab
;
26 static struct kmem_cache
*inode_entry_slab
;
29 * We guarantee no failure on the returned page.
31 struct page
*grab_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
33 struct address_space
*mapping
= sbi
->meta_inode
->i_mapping
;
34 struct page
*page
= NULL
;
36 page
= grab_cache_page(mapping
, index
);
42 /* We wait writeback only inside grab_meta_page() */
43 wait_on_page_writeback(page
);
44 SetPageUptodate(page
);
49 * We guarantee no failure on the returned page.
51 struct page
*get_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
53 struct address_space
*mapping
= sbi
->meta_inode
->i_mapping
;
56 page
= grab_cache_page(mapping
, index
);
61 if (PageUptodate(page
))
64 if (f2fs_readpage(sbi
, page
, index
, READ_SYNC
))
68 if (page
->mapping
!= mapping
) {
69 f2fs_put_page(page
, 1);
73 mark_page_accessed(page
);
77 static int f2fs_write_meta_page(struct page
*page
,
78 struct writeback_control
*wbc
)
80 struct inode
*inode
= page
->mapping
->host
;
81 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
83 /* Should not write any meta pages, if any IO error was occurred */
84 if (wbc
->for_reclaim
|| sbi
->por_doing
||
85 is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_ERROR_FLAG
)) {
86 dec_page_count(sbi
, F2FS_DIRTY_META
);
89 return AOP_WRITEPAGE_ACTIVATE
;
92 wait_on_page_writeback(page
);
94 write_meta_page(sbi
, page
);
95 dec_page_count(sbi
, F2FS_DIRTY_META
);
100 static int f2fs_write_meta_pages(struct address_space
*mapping
,
101 struct writeback_control
*wbc
)
103 struct f2fs_sb_info
*sbi
= F2FS_SB(mapping
->host
->i_sb
);
104 struct block_device
*bdev
= sbi
->sb
->s_bdev
;
107 if (wbc
->for_kupdate
)
110 if (get_pages(sbi
, F2FS_DIRTY_META
) == 0)
113 /* if mounting is failed, skip writing node pages */
114 mutex_lock(&sbi
->cp_mutex
);
115 written
= sync_meta_pages(sbi
, META
, bio_get_nr_vecs(bdev
));
116 mutex_unlock(&sbi
->cp_mutex
);
117 wbc
->nr_to_write
-= written
;
121 long sync_meta_pages(struct f2fs_sb_info
*sbi
, enum page_type type
,
124 struct address_space
*mapping
= sbi
->meta_inode
->i_mapping
;
125 pgoff_t index
= 0, end
= LONG_MAX
;
128 struct writeback_control wbc
= {
132 pagevec_init(&pvec
, 0);
134 while (index
<= end
) {
136 nr_pages
= pagevec_lookup_tag(&pvec
, mapping
, &index
,
138 min(end
- index
, (pgoff_t
)PAGEVEC_SIZE
-1) + 1);
142 for (i
= 0; i
< nr_pages
; i
++) {
143 struct page
*page
= pvec
.pages
[i
];
145 f2fs_bug_on(page
->mapping
!= mapping
);
146 f2fs_bug_on(!PageDirty(page
));
147 clear_page_dirty_for_io(page
);
148 if (f2fs_write_meta_page(page
, &wbc
)) {
152 if (nwritten
++ >= nr_to_write
)
155 pagevec_release(&pvec
);
160 f2fs_submit_bio(sbi
, type
, nr_to_write
== LONG_MAX
);
165 static int f2fs_set_meta_page_dirty(struct page
*page
)
167 struct address_space
*mapping
= page
->mapping
;
168 struct f2fs_sb_info
*sbi
= F2FS_SB(mapping
->host
->i_sb
);
170 trace_f2fs_set_page_dirty(page
, META
);
172 SetPageUptodate(page
);
173 if (!PageDirty(page
)) {
174 __set_page_dirty_nobuffers(page
);
175 inc_page_count(sbi
, F2FS_DIRTY_META
);
181 const struct address_space_operations f2fs_meta_aops
= {
182 .writepage
= f2fs_write_meta_page
,
183 .writepages
= f2fs_write_meta_pages
,
184 .set_page_dirty
= f2fs_set_meta_page_dirty
,
187 int acquire_orphan_inode(struct f2fs_sb_info
*sbi
)
189 unsigned int max_orphans
;
193 * considering 512 blocks in a segment 5 blocks are needed for cp
194 * and log segment summaries. Remaining blocks are used to keep
195 * orphan entries with the limitation one reserved segment
196 * for cp pack we can have max 1020*507 orphan entries
198 max_orphans
= (sbi
->blocks_per_seg
- 5) * F2FS_ORPHANS_PER_BLOCK
;
199 mutex_lock(&sbi
->orphan_inode_mutex
);
200 if (sbi
->n_orphans
>= max_orphans
)
204 mutex_unlock(&sbi
->orphan_inode_mutex
);
208 void release_orphan_inode(struct f2fs_sb_info
*sbi
)
210 mutex_lock(&sbi
->orphan_inode_mutex
);
211 f2fs_bug_on(sbi
->n_orphans
== 0);
213 mutex_unlock(&sbi
->orphan_inode_mutex
);
216 void add_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
218 struct list_head
*head
, *this;
219 struct orphan_inode_entry
*new = NULL
, *orphan
= NULL
;
221 mutex_lock(&sbi
->orphan_inode_mutex
);
222 head
= &sbi
->orphan_inode_list
;
223 list_for_each(this, head
) {
224 orphan
= list_entry(this, struct orphan_inode_entry
, list
);
225 if (orphan
->ino
== ino
)
227 if (orphan
->ino
> ino
)
232 new = f2fs_kmem_cache_alloc(orphan_entry_slab
, GFP_ATOMIC
);
235 /* add new_oentry into list which is sorted by inode number */
237 list_add(&new->list
, this->prev
);
239 list_add_tail(&new->list
, head
);
241 mutex_unlock(&sbi
->orphan_inode_mutex
);
244 void remove_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
246 struct list_head
*head
;
247 struct orphan_inode_entry
*orphan
;
249 mutex_lock(&sbi
->orphan_inode_mutex
);
250 head
= &sbi
->orphan_inode_list
;
251 list_for_each_entry(orphan
, head
, list
) {
252 if (orphan
->ino
== ino
) {
253 list_del(&orphan
->list
);
254 kmem_cache_free(orphan_entry_slab
, orphan
);
255 f2fs_bug_on(sbi
->n_orphans
== 0);
260 mutex_unlock(&sbi
->orphan_inode_mutex
);
263 static void recover_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
265 struct inode
*inode
= f2fs_iget(sbi
->sb
, ino
);
266 f2fs_bug_on(IS_ERR(inode
));
269 /* truncate all the data during iput */
273 int recover_orphan_inodes(struct f2fs_sb_info
*sbi
)
275 block_t start_blk
, orphan_blkaddr
, i
, j
;
277 if (!is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
))
280 sbi
->por_doing
= true;
281 start_blk
= __start_cp_addr(sbi
) + 1;
282 orphan_blkaddr
= __start_sum_addr(sbi
) - 1;
284 for (i
= 0; i
< orphan_blkaddr
; i
++) {
285 struct page
*page
= get_meta_page(sbi
, start_blk
+ i
);
286 struct f2fs_orphan_block
*orphan_blk
;
288 orphan_blk
= (struct f2fs_orphan_block
*)page_address(page
);
289 for (j
= 0; j
< le32_to_cpu(orphan_blk
->entry_count
); j
++) {
290 nid_t ino
= le32_to_cpu(orphan_blk
->ino
[j
]);
291 recover_orphan_inode(sbi
, ino
);
293 f2fs_put_page(page
, 1);
295 /* clear Orphan Flag */
296 clear_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
);
297 sbi
->por_doing
= false;
301 static void write_orphan_inodes(struct f2fs_sb_info
*sbi
, block_t start_blk
)
303 struct list_head
*head
, *this, *next
;
304 struct f2fs_orphan_block
*orphan_blk
= NULL
;
305 struct page
*page
= NULL
;
306 unsigned int nentries
= 0;
307 unsigned short index
= 1;
308 unsigned short orphan_blocks
;
310 orphan_blocks
= (unsigned short)((sbi
->n_orphans
+
311 (F2FS_ORPHANS_PER_BLOCK
- 1)) / F2FS_ORPHANS_PER_BLOCK
);
313 mutex_lock(&sbi
->orphan_inode_mutex
);
314 head
= &sbi
->orphan_inode_list
;
316 /* loop for each orphan inode entry and write them in Jornal block */
317 list_for_each_safe(this, next
, head
) {
318 struct orphan_inode_entry
*orphan
;
320 orphan
= list_entry(this, struct orphan_inode_entry
, list
);
322 if (nentries
== F2FS_ORPHANS_PER_BLOCK
) {
324 * an orphan block is full of 1020 entries,
325 * then we need to flush current orphan blocks
326 * and bring another one in memory
328 orphan_blk
->blk_addr
= cpu_to_le16(index
);
329 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
330 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
331 set_page_dirty(page
);
332 f2fs_put_page(page
, 1);
341 page
= grab_meta_page(sbi
, start_blk
);
342 orphan_blk
= (struct f2fs_orphan_block
*)page_address(page
);
343 memset(orphan_blk
, 0, sizeof(*orphan_blk
));
345 orphan_blk
->ino
[nentries
++] = cpu_to_le32(orphan
->ino
);
350 orphan_blk
->blk_addr
= cpu_to_le16(index
);
351 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
352 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
353 set_page_dirty(page
);
354 f2fs_put_page(page
, 1);
356 mutex_unlock(&sbi
->orphan_inode_mutex
);
359 static struct page
*validate_checkpoint(struct f2fs_sb_info
*sbi
,
360 block_t cp_addr
, unsigned long long *version
)
362 struct page
*cp_page_1
, *cp_page_2
= NULL
;
363 unsigned long blk_size
= sbi
->blocksize
;
364 struct f2fs_checkpoint
*cp_block
;
365 unsigned long long cur_version
= 0, pre_version
= 0;
369 /* Read the 1st cp block in this CP pack */
370 cp_page_1
= get_meta_page(sbi
, cp_addr
);
372 /* get the version number */
373 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_1
);
374 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
375 if (crc_offset
>= blk_size
)
378 crc
= le32_to_cpu(*((__u32
*)((unsigned char *)cp_block
+ crc_offset
)));
379 if (!f2fs_crc_valid(crc
, cp_block
, crc_offset
))
382 pre_version
= cur_cp_version(cp_block
);
384 /* Read the 2nd cp block in this CP pack */
385 cp_addr
+= le32_to_cpu(cp_block
->cp_pack_total_block_count
) - 1;
386 cp_page_2
= get_meta_page(sbi
, cp_addr
);
388 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_2
);
389 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
390 if (crc_offset
>= blk_size
)
393 crc
= le32_to_cpu(*((__u32
*)((unsigned char *)cp_block
+ crc_offset
)));
394 if (!f2fs_crc_valid(crc
, cp_block
, crc_offset
))
397 cur_version
= cur_cp_version(cp_block
);
399 if (cur_version
== pre_version
) {
400 *version
= cur_version
;
401 f2fs_put_page(cp_page_2
, 1);
405 f2fs_put_page(cp_page_2
, 1);
407 f2fs_put_page(cp_page_1
, 1);
411 int get_valid_checkpoint(struct f2fs_sb_info
*sbi
)
413 struct f2fs_checkpoint
*cp_block
;
414 struct f2fs_super_block
*fsb
= sbi
->raw_super
;
415 struct page
*cp1
, *cp2
, *cur_page
;
416 unsigned long blk_size
= sbi
->blocksize
;
417 unsigned long long cp1_version
= 0, cp2_version
= 0;
418 unsigned long long cp_start_blk_no
;
420 sbi
->ckpt
= kzalloc(blk_size
, GFP_KERNEL
);
424 * Finding out valid cp block involves read both
425 * sets( cp pack1 and cp pack 2)
427 cp_start_blk_no
= le32_to_cpu(fsb
->cp_blkaddr
);
428 cp1
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp1_version
);
430 /* The second checkpoint pack should start at the next segment */
431 cp_start_blk_no
+= 1 << le32_to_cpu(fsb
->log_blocks_per_seg
);
432 cp2
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp2_version
);
435 if (ver_after(cp2_version
, cp1_version
))
447 cp_block
= (struct f2fs_checkpoint
*)page_address(cur_page
);
448 memcpy(sbi
->ckpt
, cp_block
, blk_size
);
450 f2fs_put_page(cp1
, 1);
451 f2fs_put_page(cp2
, 1);
459 static int __add_dirty_inode(struct inode
*inode
, struct dir_inode_entry
*new)
461 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
462 struct list_head
*head
= &sbi
->dir_inode_list
;
463 struct list_head
*this;
465 list_for_each(this, head
) {
466 struct dir_inode_entry
*entry
;
467 entry
= list_entry(this, struct dir_inode_entry
, list
);
468 if (entry
->inode
== inode
)
471 list_add_tail(&new->list
, head
);
472 stat_inc_dirty_dir(sbi
);
476 void set_dirty_dir_page(struct inode
*inode
, struct page
*page
)
478 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
479 struct dir_inode_entry
*new;
481 if (!S_ISDIR(inode
->i_mode
))
484 new = f2fs_kmem_cache_alloc(inode_entry_slab
, GFP_NOFS
);
486 INIT_LIST_HEAD(&new->list
);
488 spin_lock(&sbi
->dir_inode_lock
);
489 if (__add_dirty_inode(inode
, new))
490 kmem_cache_free(inode_entry_slab
, new);
492 inc_page_count(sbi
, F2FS_DIRTY_DENTS
);
493 inode_inc_dirty_dents(inode
);
494 SetPagePrivate(page
);
495 spin_unlock(&sbi
->dir_inode_lock
);
498 void add_dirty_dir_inode(struct inode
*inode
)
500 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
501 struct dir_inode_entry
*new =
502 f2fs_kmem_cache_alloc(inode_entry_slab
, GFP_NOFS
);
505 INIT_LIST_HEAD(&new->list
);
507 spin_lock(&sbi
->dir_inode_lock
);
508 if (__add_dirty_inode(inode
, new))
509 kmem_cache_free(inode_entry_slab
, new);
510 spin_unlock(&sbi
->dir_inode_lock
);
513 void remove_dirty_dir_inode(struct inode
*inode
)
515 struct f2fs_sb_info
*sbi
= F2FS_SB(inode
->i_sb
);
516 struct list_head
*head
= &sbi
->dir_inode_list
;
517 struct list_head
*this;
519 if (!S_ISDIR(inode
->i_mode
))
522 spin_lock(&sbi
->dir_inode_lock
);
523 if (atomic_read(&F2FS_I(inode
)->dirty_dents
)) {
524 spin_unlock(&sbi
->dir_inode_lock
);
528 list_for_each(this, head
) {
529 struct dir_inode_entry
*entry
;
530 entry
= list_entry(this, struct dir_inode_entry
, list
);
531 if (entry
->inode
== inode
) {
532 list_del(&entry
->list
);
533 kmem_cache_free(inode_entry_slab
, entry
);
534 stat_dec_dirty_dir(sbi
);
538 spin_unlock(&sbi
->dir_inode_lock
);
540 /* Only from the recovery routine */
541 if (is_inode_flag_set(F2FS_I(inode
), FI_DELAY_IPUT
)) {
542 clear_inode_flag(F2FS_I(inode
), FI_DELAY_IPUT
);
547 struct inode
*check_dirty_dir_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
549 struct list_head
*head
= &sbi
->dir_inode_list
;
550 struct list_head
*this;
551 struct inode
*inode
= NULL
;
553 spin_lock(&sbi
->dir_inode_lock
);
554 list_for_each(this, head
) {
555 struct dir_inode_entry
*entry
;
556 entry
= list_entry(this, struct dir_inode_entry
, list
);
557 if (entry
->inode
->i_ino
== ino
) {
558 inode
= entry
->inode
;
562 spin_unlock(&sbi
->dir_inode_lock
);
566 void sync_dirty_dir_inodes(struct f2fs_sb_info
*sbi
)
568 struct list_head
*head
= &sbi
->dir_inode_list
;
569 struct dir_inode_entry
*entry
;
572 spin_lock(&sbi
->dir_inode_lock
);
573 if (list_empty(head
)) {
574 spin_unlock(&sbi
->dir_inode_lock
);
577 entry
= list_entry(head
->next
, struct dir_inode_entry
, list
);
578 inode
= igrab(entry
->inode
);
579 spin_unlock(&sbi
->dir_inode_lock
);
581 filemap_flush(inode
->i_mapping
);
585 * We should submit bio, since it exists several
586 * wribacking dentry pages in the freeing inode.
588 f2fs_submit_bio(sbi
, DATA
, true);
594 * Freeze all the FS-operations for checkpoint.
596 static void block_operations(struct f2fs_sb_info
*sbi
)
598 struct writeback_control wbc
= {
599 .sync_mode
= WB_SYNC_ALL
,
600 .nr_to_write
= LONG_MAX
,
603 struct blk_plug plug
;
605 blk_start_plug(&plug
);
609 /* write all the dirty dentry pages */
610 if (get_pages(sbi
, F2FS_DIRTY_DENTS
)) {
611 f2fs_unlock_all(sbi
);
612 sync_dirty_dir_inodes(sbi
);
613 goto retry_flush_dents
;
617 * POR: we should ensure that there is no dirty node pages
618 * until finishing nat/sit flush.
621 mutex_lock(&sbi
->node_write
);
623 if (get_pages(sbi
, F2FS_DIRTY_NODES
)) {
624 mutex_unlock(&sbi
->node_write
);
625 sync_node_pages(sbi
, 0, &wbc
);
626 goto retry_flush_nodes
;
628 blk_finish_plug(&plug
);
631 static void unblock_operations(struct f2fs_sb_info
*sbi
)
633 mutex_unlock(&sbi
->node_write
);
634 f2fs_unlock_all(sbi
);
637 static void do_checkpoint(struct f2fs_sb_info
*sbi
, bool is_umount
)
639 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
642 struct page
*cp_page
;
643 unsigned int data_sum_blocks
, orphan_blocks
;
648 /* Flush all the NAT/SIT pages */
649 while (get_pages(sbi
, F2FS_DIRTY_META
))
650 sync_meta_pages(sbi
, META
, LONG_MAX
);
652 next_free_nid(sbi
, &last_nid
);
656 * version number is already updated
658 ckpt
->elapsed_time
= cpu_to_le64(get_mtime(sbi
));
659 ckpt
->valid_block_count
= cpu_to_le64(valid_user_blocks(sbi
));
660 ckpt
->free_segment_count
= cpu_to_le32(free_segments(sbi
));
661 for (i
= 0; i
< 3; i
++) {
662 ckpt
->cur_node_segno
[i
] =
663 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_NODE
));
664 ckpt
->cur_node_blkoff
[i
] =
665 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_NODE
));
666 ckpt
->alloc_type
[i
+ CURSEG_HOT_NODE
] =
667 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_NODE
);
669 for (i
= 0; i
< 3; i
++) {
670 ckpt
->cur_data_segno
[i
] =
671 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_DATA
));
672 ckpt
->cur_data_blkoff
[i
] =
673 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_DATA
));
674 ckpt
->alloc_type
[i
+ CURSEG_HOT_DATA
] =
675 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_DATA
);
678 ckpt
->valid_node_count
= cpu_to_le32(valid_node_count(sbi
));
679 ckpt
->valid_inode_count
= cpu_to_le32(valid_inode_count(sbi
));
680 ckpt
->next_free_nid
= cpu_to_le32(last_nid
);
682 /* 2 cp + n data seg summary + orphan inode blocks */
683 data_sum_blocks
= npages_for_summary_flush(sbi
);
684 if (data_sum_blocks
< 3)
685 set_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
687 clear_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
689 orphan_blocks
= (sbi
->n_orphans
+ F2FS_ORPHANS_PER_BLOCK
- 1)
690 / F2FS_ORPHANS_PER_BLOCK
;
691 ckpt
->cp_pack_start_sum
= cpu_to_le32(1 + orphan_blocks
);
694 set_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
695 ckpt
->cp_pack_total_block_count
= cpu_to_le32(2 +
696 data_sum_blocks
+ orphan_blocks
+ NR_CURSEG_NODE_TYPE
);
698 clear_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
699 ckpt
->cp_pack_total_block_count
= cpu_to_le32(2 +
700 data_sum_blocks
+ orphan_blocks
);
704 set_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
706 clear_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
708 /* update SIT/NAT bitmap */
709 get_sit_bitmap(sbi
, __bitmap_ptr(sbi
, SIT_BITMAP
));
710 get_nat_bitmap(sbi
, __bitmap_ptr(sbi
, NAT_BITMAP
));
712 crc32
= f2fs_crc32(ckpt
, le32_to_cpu(ckpt
->checksum_offset
));
713 *((__le32
*)((unsigned char *)ckpt
+
714 le32_to_cpu(ckpt
->checksum_offset
)))
715 = cpu_to_le32(crc32
);
717 start_blk
= __start_cp_addr(sbi
);
719 /* write out checkpoint buffer at block 0 */
720 cp_page
= grab_meta_page(sbi
, start_blk
++);
721 kaddr
= page_address(cp_page
);
722 memcpy(kaddr
, ckpt
, (1 << sbi
->log_blocksize
));
723 set_page_dirty(cp_page
);
724 f2fs_put_page(cp_page
, 1);
726 if (sbi
->n_orphans
) {
727 write_orphan_inodes(sbi
, start_blk
);
728 start_blk
+= orphan_blocks
;
731 write_data_summaries(sbi
, start_blk
);
732 start_blk
+= data_sum_blocks
;
734 write_node_summaries(sbi
, start_blk
);
735 start_blk
+= NR_CURSEG_NODE_TYPE
;
738 /* writeout checkpoint block */
739 cp_page
= grab_meta_page(sbi
, start_blk
);
740 kaddr
= page_address(cp_page
);
741 memcpy(kaddr
, ckpt
, (1 << sbi
->log_blocksize
));
742 set_page_dirty(cp_page
);
743 f2fs_put_page(cp_page
, 1);
745 /* wait for previous submitted node/meta pages writeback */
746 sbi
->cp_task
= current
;
747 while (get_pages(sbi
, F2FS_WRITEBACK
)) {
748 set_current_state(TASK_UNINTERRUPTIBLE
);
749 if (!get_pages(sbi
, F2FS_WRITEBACK
))
753 __set_current_state(TASK_RUNNING
);
756 filemap_fdatawait_range(sbi
->node_inode
->i_mapping
, 0, LONG_MAX
);
757 filemap_fdatawait_range(sbi
->meta_inode
->i_mapping
, 0, LONG_MAX
);
759 /* update user_block_counts */
760 sbi
->last_valid_block_count
= sbi
->total_valid_block_count
;
761 sbi
->alloc_valid_block_count
= 0;
763 /* Here, we only have one bio having CP pack */
764 sync_meta_pages(sbi
, META_FLUSH
, LONG_MAX
);
766 if (!is_set_ckpt_flags(ckpt
, CP_ERROR_FLAG
)) {
767 clear_prefree_segments(sbi
);
768 F2FS_RESET_SB_DIRT(sbi
);
773 * We guarantee that this checkpoint procedure should not fail.
775 void write_checkpoint(struct f2fs_sb_info
*sbi
, bool is_umount
)
777 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
778 unsigned long long ckpt_ver
;
780 trace_f2fs_write_checkpoint(sbi
->sb
, is_umount
, "start block_ops");
782 mutex_lock(&sbi
->cp_mutex
);
783 block_operations(sbi
);
785 trace_f2fs_write_checkpoint(sbi
->sb
, is_umount
, "finish block_ops");
787 f2fs_submit_bio(sbi
, DATA
, true);
788 f2fs_submit_bio(sbi
, NODE
, true);
789 f2fs_submit_bio(sbi
, META
, true);
792 * update checkpoint pack index
793 * Increase the version number so that
794 * SIT entries and seg summaries are written at correct place
796 ckpt_ver
= cur_cp_version(ckpt
);
797 ckpt
->checkpoint_ver
= cpu_to_le64(++ckpt_ver
);
799 /* write cached NAT/SIT entries to NAT/SIT area */
800 flush_nat_entries(sbi
);
801 flush_sit_entries(sbi
);
803 /* unlock all the fs_lock[] in do_checkpoint() */
804 do_checkpoint(sbi
, is_umount
);
806 unblock_operations(sbi
);
807 mutex_unlock(&sbi
->cp_mutex
);
809 trace_f2fs_write_checkpoint(sbi
->sb
, is_umount
, "finish checkpoint");
812 void init_orphan_info(struct f2fs_sb_info
*sbi
)
814 mutex_init(&sbi
->orphan_inode_mutex
);
815 INIT_LIST_HEAD(&sbi
->orphan_inode_list
);
819 int __init
create_checkpoint_caches(void)
821 orphan_entry_slab
= f2fs_kmem_cache_create("f2fs_orphan_entry",
822 sizeof(struct orphan_inode_entry
), NULL
);
823 if (unlikely(!orphan_entry_slab
))
825 inode_entry_slab
= f2fs_kmem_cache_create("f2fs_dirty_dir_entry",
826 sizeof(struct dir_inode_entry
), NULL
);
827 if (unlikely(!inode_entry_slab
)) {
828 kmem_cache_destroy(orphan_entry_slab
);
834 void destroy_checkpoint_caches(void)
836 kmem_cache_destroy(orphan_entry_slab
);
837 kmem_cache_destroy(inode_entry_slab
);