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 #include <trace/events/f2fs.h>
26 static struct kmem_cache
*ino_entry_slab
;
27 struct kmem_cache
*inode_entry_slab
;
29 void f2fs_stop_checkpoint(struct f2fs_sb_info
*sbi
, bool end_io
)
31 set_ckpt_flags(sbi
->ckpt
, CP_ERROR_FLAG
);
32 sbi
->sb
->s_flags
|= MS_RDONLY
;
34 f2fs_flush_merged_bios(sbi
);
38 * We guarantee no failure on the returned page.
40 struct page
*grab_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
42 struct address_space
*mapping
= META_MAPPING(sbi
);
43 struct page
*page
= NULL
;
45 page
= f2fs_grab_cache_page(mapping
, index
, false);
50 f2fs_wait_on_page_writeback(page
, META
, true);
51 SetPageUptodate(page
);
56 * We guarantee no failure on the returned page.
58 static struct page
*__get_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
,
61 struct address_space
*mapping
= META_MAPPING(sbi
);
63 struct f2fs_io_info fio
= {
67 .op_flags
= READ_SYNC
| REQ_META
| REQ_PRIO
,
70 .encrypted_page
= NULL
,
73 if (unlikely(!is_meta
))
74 fio
.op_flags
&= ~REQ_META
;
76 page
= f2fs_grab_cache_page(mapping
, index
, false);
81 if (PageUptodate(page
))
86 if (f2fs_submit_page_bio(&fio
)) {
87 f2fs_put_page(page
, 1);
92 if (unlikely(page
->mapping
!= mapping
)) {
93 f2fs_put_page(page
, 1);
98 * if there is any IO error when accessing device, make our filesystem
99 * readonly and make sure do not write checkpoint with non-uptodate
102 if (unlikely(!PageUptodate(page
)))
103 f2fs_stop_checkpoint(sbi
, false);
108 struct page
*get_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
110 return __get_meta_page(sbi
, index
, true);
114 struct page
*get_tmp_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
116 return __get_meta_page(sbi
, index
, false);
119 bool is_valid_blkaddr(struct f2fs_sb_info
*sbi
, block_t blkaddr
, int type
)
125 if (unlikely(blkaddr
>= SIT_BLK_CNT(sbi
)))
129 if (unlikely(blkaddr
>= MAIN_BLKADDR(sbi
) ||
130 blkaddr
< SM_I(sbi
)->ssa_blkaddr
))
134 if (unlikely(blkaddr
>= SIT_I(sbi
)->sit_base_addr
||
135 blkaddr
< __start_cp_addr(sbi
)))
139 if (unlikely(blkaddr
>= MAX_BLKADDR(sbi
) ||
140 blkaddr
< MAIN_BLKADDR(sbi
)))
151 * Readahead CP/NAT/SIT/SSA pages
153 int ra_meta_pages(struct f2fs_sb_info
*sbi
, block_t start
, int nrpages
,
157 block_t blkno
= start
;
158 struct f2fs_io_info fio
= {
162 .op_flags
= sync
? (READ_SYNC
| REQ_META
| REQ_PRIO
) : READA
,
163 .encrypted_page
= NULL
,
165 struct blk_plug plug
;
167 if (unlikely(type
== META_POR
))
168 fio
.op_flags
&= ~REQ_META
;
170 blk_start_plug(&plug
);
171 for (; nrpages
-- > 0; blkno
++) {
173 if (!is_valid_blkaddr(sbi
, blkno
, type
))
178 if (unlikely(blkno
>=
179 NAT_BLOCK_OFFSET(NM_I(sbi
)->max_nid
)))
181 /* get nat block addr */
182 fio
.new_blkaddr
= current_nat_addr(sbi
,
183 blkno
* NAT_ENTRY_PER_BLOCK
);
186 /* get sit block addr */
187 fio
.new_blkaddr
= current_sit_addr(sbi
,
188 blkno
* SIT_ENTRY_PER_BLOCK
);
193 fio
.new_blkaddr
= blkno
;
199 page
= f2fs_grab_cache_page(META_MAPPING(sbi
),
200 fio
.new_blkaddr
, false);
203 if (PageUptodate(page
)) {
204 f2fs_put_page(page
, 1);
209 fio
.old_blkaddr
= fio
.new_blkaddr
;
210 f2fs_submit_page_mbio(&fio
);
211 f2fs_put_page(page
, 0);
214 f2fs_submit_merged_bio(sbi
, META
, READ
);
215 blk_finish_plug(&plug
);
216 return blkno
- start
;
219 void ra_meta_pages_cond(struct f2fs_sb_info
*sbi
, pgoff_t index
)
222 bool readahead
= false;
224 page
= find_get_page(META_MAPPING(sbi
), index
);
225 if (!page
|| !PageUptodate(page
))
227 f2fs_put_page(page
, 0);
230 ra_meta_pages(sbi
, index
, MAX_BIO_BLOCKS(sbi
), META_POR
, true);
233 static int f2fs_write_meta_page(struct page
*page
,
234 struct writeback_control
*wbc
)
236 struct f2fs_sb_info
*sbi
= F2FS_P_SB(page
);
238 trace_f2fs_writepage(page
, META
);
240 if (unlikely(is_sbi_flag_set(sbi
, SBI_POR_DOING
)))
242 if (wbc
->for_reclaim
&& page
->index
< GET_SUM_BLOCK(sbi
, 0))
244 if (unlikely(f2fs_cp_error(sbi
)))
247 write_meta_page(sbi
, page
);
248 dec_page_count(sbi
, F2FS_DIRTY_META
);
250 if (wbc
->for_reclaim
)
251 f2fs_submit_merged_bio_cond(sbi
, NULL
, page
, 0, META
, WRITE
);
255 if (unlikely(f2fs_cp_error(sbi
)))
256 f2fs_submit_merged_bio(sbi
, META
, WRITE
);
261 redirty_page_for_writepage(wbc
, page
);
262 return AOP_WRITEPAGE_ACTIVATE
;
265 static int f2fs_write_meta_pages(struct address_space
*mapping
,
266 struct writeback_control
*wbc
)
268 struct f2fs_sb_info
*sbi
= F2FS_M_SB(mapping
);
271 /* collect a number of dirty meta pages and write together */
272 if (wbc
->for_kupdate
||
273 get_pages(sbi
, F2FS_DIRTY_META
) < nr_pages_to_skip(sbi
, META
))
276 trace_f2fs_writepages(mapping
->host
, wbc
, META
);
278 /* if mounting is failed, skip writing node pages */
279 mutex_lock(&sbi
->cp_mutex
);
280 diff
= nr_pages_to_write(sbi
, META
, wbc
);
281 written
= sync_meta_pages(sbi
, META
, wbc
->nr_to_write
);
282 mutex_unlock(&sbi
->cp_mutex
);
283 wbc
->nr_to_write
= max((long)0, wbc
->nr_to_write
- written
- diff
);
287 wbc
->pages_skipped
+= get_pages(sbi
, F2FS_DIRTY_META
);
288 trace_f2fs_writepages(mapping
->host
, wbc
, META
);
292 long sync_meta_pages(struct f2fs_sb_info
*sbi
, enum page_type type
,
295 struct address_space
*mapping
= META_MAPPING(sbi
);
296 pgoff_t index
= 0, end
= ULONG_MAX
, prev
= ULONG_MAX
;
299 struct writeback_control wbc
= {
302 struct blk_plug plug
;
304 pagevec_init(&pvec
, 0);
306 blk_start_plug(&plug
);
308 while (index
<= end
) {
310 nr_pages
= pagevec_lookup_tag(&pvec
, mapping
, &index
,
312 min(end
- index
, (pgoff_t
)PAGEVEC_SIZE
-1) + 1);
313 if (unlikely(nr_pages
== 0))
316 for (i
= 0; i
< nr_pages
; i
++) {
317 struct page
*page
= pvec
.pages
[i
];
319 if (prev
== ULONG_MAX
)
320 prev
= page
->index
- 1;
321 if (nr_to_write
!= LONG_MAX
&& page
->index
!= prev
+ 1) {
322 pagevec_release(&pvec
);
328 if (unlikely(page
->mapping
!= mapping
)) {
333 if (!PageDirty(page
)) {
334 /* someone wrote it for us */
335 goto continue_unlock
;
338 f2fs_wait_on_page_writeback(page
, META
, true);
340 BUG_ON(PageWriteback(page
));
341 if (!clear_page_dirty_for_io(page
))
342 goto continue_unlock
;
344 if (mapping
->a_ops
->writepage(page
, &wbc
)) {
350 if (unlikely(nwritten
>= nr_to_write
))
353 pagevec_release(&pvec
);
358 f2fs_submit_merged_bio(sbi
, type
, WRITE
);
360 blk_finish_plug(&plug
);
365 static int f2fs_set_meta_page_dirty(struct page
*page
)
367 trace_f2fs_set_page_dirty(page
, META
);
369 SetPageUptodate(page
);
370 if (!PageDirty(page
)) {
371 __set_page_dirty_nobuffers(page
);
372 inc_page_count(F2FS_P_SB(page
), F2FS_DIRTY_META
);
373 SetPagePrivate(page
);
374 f2fs_trace_pid(page
);
380 const struct address_space_operations f2fs_meta_aops
= {
381 .writepage
= f2fs_write_meta_page
,
382 .writepages
= f2fs_write_meta_pages
,
383 .set_page_dirty
= f2fs_set_meta_page_dirty
,
384 .invalidatepage
= f2fs_invalidate_page
,
385 .releasepage
= f2fs_release_page
,
388 static void __add_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
390 struct inode_management
*im
= &sbi
->im
[type
];
391 struct ino_entry
*e
, *tmp
;
393 tmp
= f2fs_kmem_cache_alloc(ino_entry_slab
, GFP_NOFS
);
395 radix_tree_preload(GFP_NOFS
| __GFP_NOFAIL
);
397 spin_lock(&im
->ino_lock
);
398 e
= radix_tree_lookup(&im
->ino_root
, ino
);
401 if (radix_tree_insert(&im
->ino_root
, ino
, e
)) {
402 spin_unlock(&im
->ino_lock
);
403 radix_tree_preload_end();
406 memset(e
, 0, sizeof(struct ino_entry
));
409 list_add_tail(&e
->list
, &im
->ino_list
);
410 if (type
!= ORPHAN_INO
)
413 spin_unlock(&im
->ino_lock
);
414 radix_tree_preload_end();
417 kmem_cache_free(ino_entry_slab
, tmp
);
420 static void __remove_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
422 struct inode_management
*im
= &sbi
->im
[type
];
425 spin_lock(&im
->ino_lock
);
426 e
= radix_tree_lookup(&im
->ino_root
, ino
);
429 radix_tree_delete(&im
->ino_root
, ino
);
431 spin_unlock(&im
->ino_lock
);
432 kmem_cache_free(ino_entry_slab
, e
);
435 spin_unlock(&im
->ino_lock
);
438 void add_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
440 /* add new dirty ino entry into list */
441 __add_ino_entry(sbi
, ino
, type
);
444 void remove_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
446 /* remove dirty ino entry from list */
447 __remove_ino_entry(sbi
, ino
, type
);
450 /* mode should be APPEND_INO or UPDATE_INO */
451 bool exist_written_data(struct f2fs_sb_info
*sbi
, nid_t ino
, int mode
)
453 struct inode_management
*im
= &sbi
->im
[mode
];
456 spin_lock(&im
->ino_lock
);
457 e
= radix_tree_lookup(&im
->ino_root
, ino
);
458 spin_unlock(&im
->ino_lock
);
459 return e
? true : false;
462 void release_ino_entry(struct f2fs_sb_info
*sbi
, bool all
)
464 struct ino_entry
*e
, *tmp
;
467 for (i
= all
? ORPHAN_INO
: APPEND_INO
; i
<= UPDATE_INO
; i
++) {
468 struct inode_management
*im
= &sbi
->im
[i
];
470 spin_lock(&im
->ino_lock
);
471 list_for_each_entry_safe(e
, tmp
, &im
->ino_list
, list
) {
473 radix_tree_delete(&im
->ino_root
, e
->ino
);
474 kmem_cache_free(ino_entry_slab
, e
);
477 spin_unlock(&im
->ino_lock
);
481 int acquire_orphan_inode(struct f2fs_sb_info
*sbi
)
483 struct inode_management
*im
= &sbi
->im
[ORPHAN_INO
];
486 spin_lock(&im
->ino_lock
);
488 #ifdef CONFIG_F2FS_FAULT_INJECTION
489 if (time_to_inject(FAULT_ORPHAN
)) {
490 spin_unlock(&im
->ino_lock
);
494 if (unlikely(im
->ino_num
>= sbi
->max_orphans
))
498 spin_unlock(&im
->ino_lock
);
503 void release_orphan_inode(struct f2fs_sb_info
*sbi
)
505 struct inode_management
*im
= &sbi
->im
[ORPHAN_INO
];
507 spin_lock(&im
->ino_lock
);
508 f2fs_bug_on(sbi
, im
->ino_num
== 0);
510 spin_unlock(&im
->ino_lock
);
513 void add_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
515 /* add new orphan ino entry into list */
516 __add_ino_entry(sbi
, ino
, ORPHAN_INO
);
519 void remove_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
521 /* remove orphan entry from orphan list */
522 __remove_ino_entry(sbi
, ino
, ORPHAN_INO
);
525 static int recover_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
529 inode
= f2fs_iget(sbi
->sb
, ino
);
532 * there should be a bug that we can't find the entry
535 f2fs_bug_on(sbi
, PTR_ERR(inode
) == -ENOENT
);
536 return PTR_ERR(inode
);
541 /* truncate all the data during iput */
546 int recover_orphan_inodes(struct f2fs_sb_info
*sbi
)
548 block_t start_blk
, orphan_blocks
, i
, j
;
551 if (!is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
))
554 start_blk
= __start_cp_addr(sbi
) + 1 + __cp_payload(sbi
);
555 orphan_blocks
= __start_sum_addr(sbi
) - 1 - __cp_payload(sbi
);
557 ra_meta_pages(sbi
, start_blk
, orphan_blocks
, META_CP
, true);
559 for (i
= 0; i
< orphan_blocks
; i
++) {
560 struct page
*page
= get_meta_page(sbi
, start_blk
+ i
);
561 struct f2fs_orphan_block
*orphan_blk
;
563 orphan_blk
= (struct f2fs_orphan_block
*)page_address(page
);
564 for (j
= 0; j
< le32_to_cpu(orphan_blk
->entry_count
); j
++) {
565 nid_t ino
= le32_to_cpu(orphan_blk
->ino
[j
]);
566 err
= recover_orphan_inode(sbi
, ino
);
568 f2fs_put_page(page
, 1);
572 f2fs_put_page(page
, 1);
574 /* clear Orphan Flag */
575 clear_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
);
579 static void write_orphan_inodes(struct f2fs_sb_info
*sbi
, block_t start_blk
)
581 struct list_head
*head
;
582 struct f2fs_orphan_block
*orphan_blk
= NULL
;
583 unsigned int nentries
= 0;
584 unsigned short index
= 1;
585 unsigned short orphan_blocks
;
586 struct page
*page
= NULL
;
587 struct ino_entry
*orphan
= NULL
;
588 struct inode_management
*im
= &sbi
->im
[ORPHAN_INO
];
590 orphan_blocks
= GET_ORPHAN_BLOCKS(im
->ino_num
);
593 * we don't need to do spin_lock(&im->ino_lock) here, since all the
594 * orphan inode operations are covered under f2fs_lock_op().
595 * And, spin_lock should be avoided due to page operations below.
597 head
= &im
->ino_list
;
599 /* loop for each orphan inode entry and write them in Jornal block */
600 list_for_each_entry(orphan
, head
, list
) {
602 page
= grab_meta_page(sbi
, start_blk
++);
604 (struct f2fs_orphan_block
*)page_address(page
);
605 memset(orphan_blk
, 0, sizeof(*orphan_blk
));
608 orphan_blk
->ino
[nentries
++] = cpu_to_le32(orphan
->ino
);
610 if (nentries
== F2FS_ORPHANS_PER_BLOCK
) {
612 * an orphan block is full of 1020 entries,
613 * then we need to flush current orphan blocks
614 * and bring another one in memory
616 orphan_blk
->blk_addr
= cpu_to_le16(index
);
617 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
618 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
619 set_page_dirty(page
);
620 f2fs_put_page(page
, 1);
628 orphan_blk
->blk_addr
= cpu_to_le16(index
);
629 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
630 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
631 set_page_dirty(page
);
632 f2fs_put_page(page
, 1);
636 static struct page
*validate_checkpoint(struct f2fs_sb_info
*sbi
,
637 block_t cp_addr
, unsigned long long *version
)
639 struct page
*cp_page_1
, *cp_page_2
= NULL
;
640 unsigned long blk_size
= sbi
->blocksize
;
641 struct f2fs_checkpoint
*cp_block
;
642 unsigned long long cur_version
= 0, pre_version
= 0;
646 /* Read the 1st cp block in this CP pack */
647 cp_page_1
= get_meta_page(sbi
, cp_addr
);
649 /* get the version number */
650 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_1
);
651 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
652 if (crc_offset
>= blk_size
)
655 crc
= le32_to_cpu(*((__le32
*)((unsigned char *)cp_block
+ crc_offset
)));
656 if (!f2fs_crc_valid(sbi
, crc
, cp_block
, crc_offset
))
659 pre_version
= cur_cp_version(cp_block
);
661 /* Read the 2nd cp block in this CP pack */
662 cp_addr
+= le32_to_cpu(cp_block
->cp_pack_total_block_count
) - 1;
663 cp_page_2
= get_meta_page(sbi
, cp_addr
);
665 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_2
);
666 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
667 if (crc_offset
>= blk_size
)
670 crc
= le32_to_cpu(*((__le32
*)((unsigned char *)cp_block
+ crc_offset
)));
671 if (!f2fs_crc_valid(sbi
, crc
, cp_block
, crc_offset
))
674 cur_version
= cur_cp_version(cp_block
);
676 if (cur_version
== pre_version
) {
677 *version
= cur_version
;
678 f2fs_put_page(cp_page_2
, 1);
682 f2fs_put_page(cp_page_2
, 1);
684 f2fs_put_page(cp_page_1
, 1);
688 int get_valid_checkpoint(struct f2fs_sb_info
*sbi
)
690 struct f2fs_checkpoint
*cp_block
;
691 struct f2fs_super_block
*fsb
= sbi
->raw_super
;
692 struct page
*cp1
, *cp2
, *cur_page
;
693 unsigned long blk_size
= sbi
->blocksize
;
694 unsigned long long cp1_version
= 0, cp2_version
= 0;
695 unsigned long long cp_start_blk_no
;
696 unsigned int cp_blks
= 1 + __cp_payload(sbi
);
700 sbi
->ckpt
= kzalloc(cp_blks
* blk_size
, GFP_KERNEL
);
704 * Finding out valid cp block involves read both
705 * sets( cp pack1 and cp pack 2)
707 cp_start_blk_no
= le32_to_cpu(fsb
->cp_blkaddr
);
708 cp1
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp1_version
);
710 /* The second checkpoint pack should start at the next segment */
711 cp_start_blk_no
+= ((unsigned long long)1) <<
712 le32_to_cpu(fsb
->log_blocks_per_seg
);
713 cp2
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp2_version
);
716 if (ver_after(cp2_version
, cp1_version
))
728 cp_block
= (struct f2fs_checkpoint
*)page_address(cur_page
);
729 memcpy(sbi
->ckpt
, cp_block
, blk_size
);
731 /* Sanity checking of checkpoint */
732 if (sanity_check_ckpt(sbi
))
738 cp_blk_no
= le32_to_cpu(fsb
->cp_blkaddr
);
740 cp_blk_no
+= 1 << le32_to_cpu(fsb
->log_blocks_per_seg
);
742 for (i
= 1; i
< cp_blks
; i
++) {
743 void *sit_bitmap_ptr
;
744 unsigned char *ckpt
= (unsigned char *)sbi
->ckpt
;
746 cur_page
= get_meta_page(sbi
, cp_blk_no
+ i
);
747 sit_bitmap_ptr
= page_address(cur_page
);
748 memcpy(ckpt
+ i
* blk_size
, sit_bitmap_ptr
, blk_size
);
749 f2fs_put_page(cur_page
, 1);
752 f2fs_put_page(cp1
, 1);
753 f2fs_put_page(cp2
, 1);
761 static void __add_dirty_inode(struct inode
*inode
, enum inode_type type
)
763 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
764 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
765 int flag
= (type
== DIR_INODE
) ? FI_DIRTY_DIR
: FI_DIRTY_FILE
;
767 if (is_inode_flag_set(fi
, flag
))
770 set_inode_flag(fi
, flag
);
771 list_add_tail(&fi
->dirty_list
, &sbi
->inode_list
[type
]);
772 stat_inc_dirty_inode(sbi
, type
);
775 static void __remove_dirty_inode(struct inode
*inode
, enum inode_type type
)
777 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
778 int flag
= (type
== DIR_INODE
) ? FI_DIRTY_DIR
: FI_DIRTY_FILE
;
780 if (get_dirty_pages(inode
) ||
781 !is_inode_flag_set(F2FS_I(inode
), flag
))
784 list_del_init(&fi
->dirty_list
);
785 clear_inode_flag(fi
, flag
);
786 stat_dec_dirty_inode(F2FS_I_SB(inode
), type
);
789 void update_dirty_page(struct inode
*inode
, struct page
*page
)
791 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
792 enum inode_type type
= S_ISDIR(inode
->i_mode
) ? DIR_INODE
: FILE_INODE
;
794 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
795 !S_ISLNK(inode
->i_mode
))
798 if (type
!= FILE_INODE
|| test_opt(sbi
, DATA_FLUSH
)) {
799 spin_lock(&sbi
->inode_lock
[type
]);
800 __add_dirty_inode(inode
, type
);
801 spin_unlock(&sbi
->inode_lock
[type
]);
804 inode_inc_dirty_pages(inode
);
805 SetPagePrivate(page
);
806 f2fs_trace_pid(page
);
809 void remove_dirty_inode(struct inode
*inode
)
811 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
812 enum inode_type type
= S_ISDIR(inode
->i_mode
) ? DIR_INODE
: FILE_INODE
;
814 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
815 !S_ISLNK(inode
->i_mode
))
818 if (type
== FILE_INODE
&& !test_opt(sbi
, DATA_FLUSH
))
821 spin_lock(&sbi
->inode_lock
[type
]);
822 __remove_dirty_inode(inode
, type
);
823 spin_unlock(&sbi
->inode_lock
[type
]);
826 int sync_dirty_inodes(struct f2fs_sb_info
*sbi
, enum inode_type type
)
828 struct list_head
*head
;
830 struct f2fs_inode_info
*fi
;
831 bool is_dir
= (type
== DIR_INODE
);
833 trace_f2fs_sync_dirty_inodes_enter(sbi
->sb
, is_dir
,
834 get_pages(sbi
, is_dir
?
835 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
));
837 if (unlikely(f2fs_cp_error(sbi
)))
840 spin_lock(&sbi
->inode_lock
[type
]);
842 head
= &sbi
->inode_list
[type
];
843 if (list_empty(head
)) {
844 spin_unlock(&sbi
->inode_lock
[type
]);
845 trace_f2fs_sync_dirty_inodes_exit(sbi
->sb
, is_dir
,
846 get_pages(sbi
, is_dir
?
847 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
));
850 fi
= list_entry(head
->next
, struct f2fs_inode_info
, dirty_list
);
851 inode
= igrab(&fi
->vfs_inode
);
852 spin_unlock(&sbi
->inode_lock
[type
]);
854 filemap_fdatawrite(inode
->i_mapping
);
858 * We should submit bio, since it exists several
859 * wribacking dentry pages in the freeing inode.
861 f2fs_submit_merged_bio(sbi
, DATA
, WRITE
);
868 * Freeze all the FS-operations for checkpoint.
870 static int block_operations(struct f2fs_sb_info
*sbi
)
872 struct writeback_control wbc
= {
873 .sync_mode
= WB_SYNC_ALL
,
874 .nr_to_write
= LONG_MAX
,
877 struct blk_plug plug
;
880 blk_start_plug(&plug
);
884 /* write all the dirty dentry pages */
885 if (get_pages(sbi
, F2FS_DIRTY_DENTS
)) {
886 f2fs_unlock_all(sbi
);
887 err
= sync_dirty_inodes(sbi
, DIR_INODE
);
890 goto retry_flush_dents
;
894 * POR: we should ensure that there are no dirty node pages
895 * until finishing nat/sit flush.
898 down_write(&sbi
->node_write
);
900 if (get_pages(sbi
, F2FS_DIRTY_NODES
)) {
901 up_write(&sbi
->node_write
);
902 err
= sync_node_pages(sbi
, &wbc
);
904 f2fs_unlock_all(sbi
);
907 goto retry_flush_nodes
;
910 blk_finish_plug(&plug
);
914 static void unblock_operations(struct f2fs_sb_info
*sbi
)
916 up_write(&sbi
->node_write
);
917 f2fs_unlock_all(sbi
);
920 static void wait_on_all_pages_writeback(struct f2fs_sb_info
*sbi
)
925 prepare_to_wait(&sbi
->cp_wait
, &wait
, TASK_UNINTERRUPTIBLE
);
927 if (!atomic_read(&sbi
->nr_wb_bios
))
930 io_schedule_timeout(5*HZ
);
932 finish_wait(&sbi
->cp_wait
, &wait
);
935 static int do_checkpoint(struct f2fs_sb_info
*sbi
, struct cp_control
*cpc
)
937 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
938 struct curseg_info
*curseg
= CURSEG_I(sbi
, CURSEG_WARM_NODE
);
939 struct f2fs_nm_info
*nm_i
= NM_I(sbi
);
940 unsigned long orphan_num
= sbi
->im
[ORPHAN_INO
].ino_num
;
941 nid_t last_nid
= nm_i
->next_scan_nid
;
943 unsigned int data_sum_blocks
, orphan_blocks
;
946 int cp_payload_blks
= __cp_payload(sbi
);
947 block_t discard_blk
= NEXT_FREE_BLKADDR(sbi
, curseg
);
948 bool invalidate
= false;
949 struct super_block
*sb
= sbi
->sb
;
950 struct curseg_info
*seg_i
= CURSEG_I(sbi
, CURSEG_HOT_NODE
);
954 * This avoids to conduct wrong roll-forward operations and uses
955 * metapages, so should be called prior to sync_meta_pages below.
957 if (discard_next_dnode(sbi
, discard_blk
))
960 /* Flush all the NAT/SIT pages */
961 while (get_pages(sbi
, F2FS_DIRTY_META
)) {
962 sync_meta_pages(sbi
, META
, LONG_MAX
);
963 if (unlikely(f2fs_cp_error(sbi
)))
967 next_free_nid(sbi
, &last_nid
);
971 * version number is already updated
973 ckpt
->elapsed_time
= cpu_to_le64(get_mtime(sbi
));
974 ckpt
->valid_block_count
= cpu_to_le64(valid_user_blocks(sbi
));
975 ckpt
->free_segment_count
= cpu_to_le32(free_segments(sbi
));
976 for (i
= 0; i
< NR_CURSEG_NODE_TYPE
; i
++) {
977 ckpt
->cur_node_segno
[i
] =
978 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_NODE
));
979 ckpt
->cur_node_blkoff
[i
] =
980 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_NODE
));
981 ckpt
->alloc_type
[i
+ CURSEG_HOT_NODE
] =
982 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_NODE
);
984 for (i
= 0; i
< NR_CURSEG_DATA_TYPE
; i
++) {
985 ckpt
->cur_data_segno
[i
] =
986 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_DATA
));
987 ckpt
->cur_data_blkoff
[i
] =
988 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_DATA
));
989 ckpt
->alloc_type
[i
+ CURSEG_HOT_DATA
] =
990 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_DATA
);
993 ckpt
->valid_node_count
= cpu_to_le32(valid_node_count(sbi
));
994 ckpt
->valid_inode_count
= cpu_to_le32(valid_inode_count(sbi
));
995 ckpt
->next_free_nid
= cpu_to_le32(last_nid
);
997 /* 2 cp + n data seg summary + orphan inode blocks */
998 data_sum_blocks
= npages_for_summary_flush(sbi
, false);
999 if (data_sum_blocks
< NR_CURSEG_DATA_TYPE
)
1000 set_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
1002 clear_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
1004 orphan_blocks
= GET_ORPHAN_BLOCKS(orphan_num
);
1005 ckpt
->cp_pack_start_sum
= cpu_to_le32(1 + cp_payload_blks
+
1008 if (__remain_node_summaries(cpc
->reason
))
1009 ckpt
->cp_pack_total_block_count
= cpu_to_le32(F2FS_CP_PACKS
+
1010 cp_payload_blks
+ data_sum_blocks
+
1011 orphan_blocks
+ NR_CURSEG_NODE_TYPE
);
1013 ckpt
->cp_pack_total_block_count
= cpu_to_le32(F2FS_CP_PACKS
+
1014 cp_payload_blks
+ data_sum_blocks
+
1017 if (cpc
->reason
== CP_UMOUNT
)
1018 set_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
1020 clear_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
1022 if (cpc
->reason
== CP_FASTBOOT
)
1023 set_ckpt_flags(ckpt
, CP_FASTBOOT_FLAG
);
1025 clear_ckpt_flags(ckpt
, CP_FASTBOOT_FLAG
);
1028 set_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
1030 clear_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
1032 if (is_sbi_flag_set(sbi
, SBI_NEED_FSCK
))
1033 set_ckpt_flags(ckpt
, CP_FSCK_FLAG
);
1035 /* update SIT/NAT bitmap */
1036 get_sit_bitmap(sbi
, __bitmap_ptr(sbi
, SIT_BITMAP
));
1037 get_nat_bitmap(sbi
, __bitmap_ptr(sbi
, NAT_BITMAP
));
1039 crc32
= f2fs_crc32(sbi
, ckpt
, le32_to_cpu(ckpt
->checksum_offset
));
1040 *((__le32
*)((unsigned char *)ckpt
+
1041 le32_to_cpu(ckpt
->checksum_offset
)))
1042 = cpu_to_le32(crc32
);
1044 start_blk
= __start_cp_addr(sbi
);
1046 /* need to wait for end_io results */
1047 wait_on_all_pages_writeback(sbi
);
1048 if (unlikely(f2fs_cp_error(sbi
)))
1051 /* write out checkpoint buffer at block 0 */
1052 update_meta_page(sbi
, ckpt
, start_blk
++);
1054 for (i
= 1; i
< 1 + cp_payload_blks
; i
++)
1055 update_meta_page(sbi
, (char *)ckpt
+ i
* F2FS_BLKSIZE
,
1059 write_orphan_inodes(sbi
, start_blk
);
1060 start_blk
+= orphan_blocks
;
1063 write_data_summaries(sbi
, start_blk
);
1064 start_blk
+= data_sum_blocks
;
1066 /* Record write statistics in the hot node summary */
1067 kbytes_written
= sbi
->kbytes_written
;
1068 if (sb
->s_bdev
->bd_part
)
1069 kbytes_written
+= BD_PART_WRITTEN(sbi
);
1071 seg_i
->journal
->info
.kbytes_written
= cpu_to_le64(kbytes_written
);
1073 if (__remain_node_summaries(cpc
->reason
)) {
1074 write_node_summaries(sbi
, start_blk
);
1075 start_blk
+= NR_CURSEG_NODE_TYPE
;
1078 /* writeout checkpoint block */
1079 update_meta_page(sbi
, ckpt
, start_blk
);
1081 /* wait for previous submitted node/meta pages writeback */
1082 wait_on_all_pages_writeback(sbi
);
1084 if (unlikely(f2fs_cp_error(sbi
)))
1087 filemap_fdatawait_range(NODE_MAPPING(sbi
), 0, LLONG_MAX
);
1088 filemap_fdatawait_range(META_MAPPING(sbi
), 0, LLONG_MAX
);
1090 /* update user_block_counts */
1091 sbi
->last_valid_block_count
= sbi
->total_valid_block_count
;
1092 percpu_counter_set(&sbi
->alloc_valid_block_count
, 0);
1094 /* Here, we only have one bio having CP pack */
1095 sync_meta_pages(sbi
, META_FLUSH
, LONG_MAX
);
1097 /* wait for previous submitted meta pages writeback */
1098 wait_on_all_pages_writeback(sbi
);
1101 * invalidate meta page which is used temporarily for zeroing out
1102 * block at the end of warm node chain.
1105 invalidate_mapping_pages(META_MAPPING(sbi
), discard_blk
,
1108 release_ino_entry(sbi
, false);
1110 if (unlikely(f2fs_cp_error(sbi
)))
1113 clear_prefree_segments(sbi
, cpc
);
1114 clear_sbi_flag(sbi
, SBI_IS_DIRTY
);
1120 * We guarantee that this checkpoint procedure will not fail.
1122 int write_checkpoint(struct f2fs_sb_info
*sbi
, struct cp_control
*cpc
)
1124 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1125 unsigned long long ckpt_ver
;
1128 mutex_lock(&sbi
->cp_mutex
);
1130 if (!is_sbi_flag_set(sbi
, SBI_IS_DIRTY
) &&
1131 (cpc
->reason
== CP_FASTBOOT
|| cpc
->reason
== CP_SYNC
||
1132 (cpc
->reason
== CP_DISCARD
&& !sbi
->discard_blks
)))
1134 if (unlikely(f2fs_cp_error(sbi
))) {
1138 if (f2fs_readonly(sbi
->sb
)) {
1143 trace_f2fs_write_checkpoint(sbi
->sb
, cpc
->reason
, "start block_ops");
1145 err
= block_operations(sbi
);
1149 trace_f2fs_write_checkpoint(sbi
->sb
, cpc
->reason
, "finish block_ops");
1151 f2fs_flush_merged_bios(sbi
);
1154 * update checkpoint pack index
1155 * Increase the version number so that
1156 * SIT entries and seg summaries are written at correct place
1158 ckpt_ver
= cur_cp_version(ckpt
);
1159 ckpt
->checkpoint_ver
= cpu_to_le64(++ckpt_ver
);
1161 /* write cached NAT/SIT entries to NAT/SIT area */
1162 flush_nat_entries(sbi
);
1163 flush_sit_entries(sbi
, cpc
);
1165 /* unlock all the fs_lock[] in do_checkpoint() */
1166 err
= do_checkpoint(sbi
, cpc
);
1168 unblock_operations(sbi
);
1169 stat_inc_cp_count(sbi
->stat_info
);
1171 if (cpc
->reason
== CP_RECOVERY
)
1172 f2fs_msg(sbi
->sb
, KERN_NOTICE
,
1173 "checkpoint: version = %llx", ckpt_ver
);
1175 /* do checkpoint periodically */
1176 f2fs_update_time(sbi
, CP_TIME
);
1177 trace_f2fs_write_checkpoint(sbi
->sb
, cpc
->reason
, "finish checkpoint");
1179 mutex_unlock(&sbi
->cp_mutex
);
1183 void init_ino_entry_info(struct f2fs_sb_info
*sbi
)
1187 for (i
= 0; i
< MAX_INO_ENTRY
; i
++) {
1188 struct inode_management
*im
= &sbi
->im
[i
];
1190 INIT_RADIX_TREE(&im
->ino_root
, GFP_ATOMIC
);
1191 spin_lock_init(&im
->ino_lock
);
1192 INIT_LIST_HEAD(&im
->ino_list
);
1196 sbi
->max_orphans
= (sbi
->blocks_per_seg
- F2FS_CP_PACKS
-
1197 NR_CURSEG_TYPE
- __cp_payload(sbi
)) *
1198 F2FS_ORPHANS_PER_BLOCK
;
1201 int __init
create_checkpoint_caches(void)
1203 ino_entry_slab
= f2fs_kmem_cache_create("f2fs_ino_entry",
1204 sizeof(struct ino_entry
));
1205 if (!ino_entry_slab
)
1207 inode_entry_slab
= f2fs_kmem_cache_create("f2fs_inode_entry",
1208 sizeof(struct inode_entry
));
1209 if (!inode_entry_slab
) {
1210 kmem_cache_destroy(ino_entry_slab
);
1216 void destroy_checkpoint_caches(void)
1218 kmem_cache_destroy(ino_entry_slab
);
1219 kmem_cache_destroy(inode_entry_slab
);