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
= {
66 .rw
= READ_SYNC
| REQ_META
| REQ_PRIO
,
69 .encrypted_page
= NULL
,
72 if (unlikely(!is_meta
))
75 page
= f2fs_grab_cache_page(mapping
, index
, false);
80 if (PageUptodate(page
))
85 if (f2fs_submit_page_bio(&fio
)) {
86 f2fs_put_page(page
, 1);
91 if (unlikely(page
->mapping
!= mapping
)) {
92 f2fs_put_page(page
, 1);
97 * if there is any IO error when accessing device, make our filesystem
98 * readonly and make sure do not write checkpoint with non-uptodate
101 if (unlikely(!PageUptodate(page
)))
102 f2fs_stop_checkpoint(sbi
, false);
107 struct page
*get_meta_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
109 return __get_meta_page(sbi
, index
, true);
113 struct page
*get_tmp_page(struct f2fs_sb_info
*sbi
, pgoff_t index
)
115 return __get_meta_page(sbi
, index
, false);
118 bool is_valid_blkaddr(struct f2fs_sb_info
*sbi
, block_t blkaddr
, int type
)
124 if (unlikely(blkaddr
>= SIT_BLK_CNT(sbi
)))
128 if (unlikely(blkaddr
>= MAIN_BLKADDR(sbi
) ||
129 blkaddr
< SM_I(sbi
)->ssa_blkaddr
))
133 if (unlikely(blkaddr
>= SIT_I(sbi
)->sit_base_addr
||
134 blkaddr
< __start_cp_addr(sbi
)))
138 if (unlikely(blkaddr
>= MAX_BLKADDR(sbi
) ||
139 blkaddr
< MAIN_BLKADDR(sbi
)))
150 * Readahead CP/NAT/SIT/SSA pages
152 int ra_meta_pages(struct f2fs_sb_info
*sbi
, block_t start
, int nrpages
,
156 block_t blkno
= start
;
157 struct f2fs_io_info fio
= {
160 .rw
= sync
? (READ_SYNC
| REQ_META
| REQ_PRIO
) : READA
,
161 .encrypted_page
= NULL
,
163 struct blk_plug plug
;
165 if (unlikely(type
== META_POR
))
168 blk_start_plug(&plug
);
169 for (; nrpages
-- > 0; blkno
++) {
171 if (!is_valid_blkaddr(sbi
, blkno
, type
))
176 if (unlikely(blkno
>=
177 NAT_BLOCK_OFFSET(NM_I(sbi
)->max_nid
)))
179 /* get nat block addr */
180 fio
.new_blkaddr
= current_nat_addr(sbi
,
181 blkno
* NAT_ENTRY_PER_BLOCK
);
184 /* get sit block addr */
185 fio
.new_blkaddr
= current_sit_addr(sbi
,
186 blkno
* SIT_ENTRY_PER_BLOCK
);
191 fio
.new_blkaddr
= blkno
;
197 page
= f2fs_grab_cache_page(META_MAPPING(sbi
),
198 fio
.new_blkaddr
, false);
201 if (PageUptodate(page
)) {
202 f2fs_put_page(page
, 1);
207 fio
.old_blkaddr
= fio
.new_blkaddr
;
208 f2fs_submit_page_mbio(&fio
);
209 f2fs_put_page(page
, 0);
212 f2fs_submit_merged_bio(sbi
, META
, READ
);
213 blk_finish_plug(&plug
);
214 return blkno
- start
;
217 void ra_meta_pages_cond(struct f2fs_sb_info
*sbi
, pgoff_t index
)
220 bool readahead
= false;
222 page
= find_get_page(META_MAPPING(sbi
), index
);
223 if (!page
|| !PageUptodate(page
))
225 f2fs_put_page(page
, 0);
228 ra_meta_pages(sbi
, index
, MAX_BIO_BLOCKS(sbi
), META_POR
, true);
231 static int f2fs_write_meta_page(struct page
*page
,
232 struct writeback_control
*wbc
)
234 struct f2fs_sb_info
*sbi
= F2FS_P_SB(page
);
236 trace_f2fs_writepage(page
, META
);
238 if (unlikely(is_sbi_flag_set(sbi
, SBI_POR_DOING
)))
240 if (wbc
->for_reclaim
&& page
->index
< GET_SUM_BLOCK(sbi
, 0))
242 if (unlikely(f2fs_cp_error(sbi
)))
245 write_meta_page(sbi
, page
);
246 dec_page_count(sbi
, F2FS_DIRTY_META
);
248 if (wbc
->for_reclaim
)
249 f2fs_submit_merged_bio_cond(sbi
, NULL
, page
, 0, META
, WRITE
);
253 if (unlikely(f2fs_cp_error(sbi
)))
254 f2fs_submit_merged_bio(sbi
, META
, WRITE
);
259 redirty_page_for_writepage(wbc
, page
);
260 return AOP_WRITEPAGE_ACTIVATE
;
263 static int f2fs_write_meta_pages(struct address_space
*mapping
,
264 struct writeback_control
*wbc
)
266 struct f2fs_sb_info
*sbi
= F2FS_M_SB(mapping
);
269 /* collect a number of dirty meta pages and write together */
270 if (wbc
->for_kupdate
||
271 get_pages(sbi
, F2FS_DIRTY_META
) < nr_pages_to_skip(sbi
, META
))
274 trace_f2fs_writepages(mapping
->host
, wbc
, META
);
276 /* if mounting is failed, skip writing node pages */
277 mutex_lock(&sbi
->cp_mutex
);
278 diff
= nr_pages_to_write(sbi
, META
, wbc
);
279 written
= sync_meta_pages(sbi
, META
, wbc
->nr_to_write
);
280 mutex_unlock(&sbi
->cp_mutex
);
281 wbc
->nr_to_write
= max((long)0, wbc
->nr_to_write
- written
- diff
);
285 wbc
->pages_skipped
+= get_pages(sbi
, F2FS_DIRTY_META
);
286 trace_f2fs_writepages(mapping
->host
, wbc
, META
);
290 long sync_meta_pages(struct f2fs_sb_info
*sbi
, enum page_type type
,
293 struct address_space
*mapping
= META_MAPPING(sbi
);
294 pgoff_t index
= 0, end
= ULONG_MAX
, prev
= ULONG_MAX
;
297 struct writeback_control wbc
= {
300 struct blk_plug plug
;
302 pagevec_init(&pvec
, 0);
304 blk_start_plug(&plug
);
306 while (index
<= end
) {
308 nr_pages
= pagevec_lookup_tag(&pvec
, mapping
, &index
,
310 min(end
- index
, (pgoff_t
)PAGEVEC_SIZE
-1) + 1);
311 if (unlikely(nr_pages
== 0))
314 for (i
= 0; i
< nr_pages
; i
++) {
315 struct page
*page
= pvec
.pages
[i
];
317 if (prev
== ULONG_MAX
)
318 prev
= page
->index
- 1;
319 if (nr_to_write
!= LONG_MAX
&& page
->index
!= prev
+ 1) {
320 pagevec_release(&pvec
);
326 if (unlikely(page
->mapping
!= mapping
)) {
331 if (!PageDirty(page
)) {
332 /* someone wrote it for us */
333 goto continue_unlock
;
336 f2fs_wait_on_page_writeback(page
, META
, true);
338 BUG_ON(PageWriteback(page
));
339 if (!clear_page_dirty_for_io(page
))
340 goto continue_unlock
;
342 if (mapping
->a_ops
->writepage(page
, &wbc
)) {
348 if (unlikely(nwritten
>= nr_to_write
))
351 pagevec_release(&pvec
);
356 f2fs_submit_merged_bio(sbi
, type
, WRITE
);
358 blk_finish_plug(&plug
);
363 static int f2fs_set_meta_page_dirty(struct page
*page
)
365 trace_f2fs_set_page_dirty(page
, META
);
367 SetPageUptodate(page
);
368 if (!PageDirty(page
)) {
369 __set_page_dirty_nobuffers(page
);
370 inc_page_count(F2FS_P_SB(page
), F2FS_DIRTY_META
);
371 SetPagePrivate(page
);
372 f2fs_trace_pid(page
);
378 const struct address_space_operations f2fs_meta_aops
= {
379 .writepage
= f2fs_write_meta_page
,
380 .writepages
= f2fs_write_meta_pages
,
381 .set_page_dirty
= f2fs_set_meta_page_dirty
,
382 .invalidatepage
= f2fs_invalidate_page
,
383 .releasepage
= f2fs_release_page
,
386 static void __add_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
388 struct inode_management
*im
= &sbi
->im
[type
];
389 struct ino_entry
*e
, *tmp
;
391 tmp
= f2fs_kmem_cache_alloc(ino_entry_slab
, GFP_NOFS
);
393 radix_tree_preload(GFP_NOFS
| __GFP_NOFAIL
);
395 spin_lock(&im
->ino_lock
);
396 e
= radix_tree_lookup(&im
->ino_root
, ino
);
399 if (radix_tree_insert(&im
->ino_root
, ino
, e
)) {
400 spin_unlock(&im
->ino_lock
);
401 radix_tree_preload_end();
404 memset(e
, 0, sizeof(struct ino_entry
));
407 list_add_tail(&e
->list
, &im
->ino_list
);
408 if (type
!= ORPHAN_INO
)
411 spin_unlock(&im
->ino_lock
);
412 radix_tree_preload_end();
415 kmem_cache_free(ino_entry_slab
, tmp
);
418 static void __remove_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
420 struct inode_management
*im
= &sbi
->im
[type
];
423 spin_lock(&im
->ino_lock
);
424 e
= radix_tree_lookup(&im
->ino_root
, ino
);
427 radix_tree_delete(&im
->ino_root
, ino
);
429 spin_unlock(&im
->ino_lock
);
430 kmem_cache_free(ino_entry_slab
, e
);
433 spin_unlock(&im
->ino_lock
);
436 void add_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
438 /* add new dirty ino entry into list */
439 __add_ino_entry(sbi
, ino
, type
);
442 void remove_ino_entry(struct f2fs_sb_info
*sbi
, nid_t ino
, int type
)
444 /* remove dirty ino entry from list */
445 __remove_ino_entry(sbi
, ino
, type
);
448 /* mode should be APPEND_INO or UPDATE_INO */
449 bool exist_written_data(struct f2fs_sb_info
*sbi
, nid_t ino
, int mode
)
451 struct inode_management
*im
= &sbi
->im
[mode
];
454 spin_lock(&im
->ino_lock
);
455 e
= radix_tree_lookup(&im
->ino_root
, ino
);
456 spin_unlock(&im
->ino_lock
);
457 return e
? true : false;
460 void release_ino_entry(struct f2fs_sb_info
*sbi
, bool all
)
462 struct ino_entry
*e
, *tmp
;
465 for (i
= all
? ORPHAN_INO
: APPEND_INO
; i
<= UPDATE_INO
; i
++) {
466 struct inode_management
*im
= &sbi
->im
[i
];
468 spin_lock(&im
->ino_lock
);
469 list_for_each_entry_safe(e
, tmp
, &im
->ino_list
, list
) {
471 radix_tree_delete(&im
->ino_root
, e
->ino
);
472 kmem_cache_free(ino_entry_slab
, e
);
475 spin_unlock(&im
->ino_lock
);
479 int acquire_orphan_inode(struct f2fs_sb_info
*sbi
)
481 struct inode_management
*im
= &sbi
->im
[ORPHAN_INO
];
484 spin_lock(&im
->ino_lock
);
486 #ifdef CONFIG_F2FS_FAULT_INJECTION
487 if (time_to_inject(FAULT_ORPHAN
)) {
488 spin_unlock(&im
->ino_lock
);
492 if (unlikely(im
->ino_num
>= sbi
->max_orphans
))
496 spin_unlock(&im
->ino_lock
);
501 void release_orphan_inode(struct f2fs_sb_info
*sbi
)
503 struct inode_management
*im
= &sbi
->im
[ORPHAN_INO
];
505 spin_lock(&im
->ino_lock
);
506 f2fs_bug_on(sbi
, im
->ino_num
== 0);
508 spin_unlock(&im
->ino_lock
);
511 void add_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
513 /* add new orphan ino entry into list */
514 __add_ino_entry(sbi
, ino
, ORPHAN_INO
);
517 void remove_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
519 /* remove orphan entry from orphan list */
520 __remove_ino_entry(sbi
, ino
, ORPHAN_INO
);
523 static int recover_orphan_inode(struct f2fs_sb_info
*sbi
, nid_t ino
)
527 inode
= f2fs_iget(sbi
->sb
, ino
);
530 * there should be a bug that we can't find the entry
533 f2fs_bug_on(sbi
, PTR_ERR(inode
) == -ENOENT
);
534 return PTR_ERR(inode
);
539 /* truncate all the data during iput */
544 int recover_orphan_inodes(struct f2fs_sb_info
*sbi
)
546 block_t start_blk
, orphan_blocks
, i
, j
;
549 if (!is_set_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
))
552 start_blk
= __start_cp_addr(sbi
) + 1 + __cp_payload(sbi
);
553 orphan_blocks
= __start_sum_addr(sbi
) - 1 - __cp_payload(sbi
);
555 ra_meta_pages(sbi
, start_blk
, orphan_blocks
, META_CP
, true);
557 for (i
= 0; i
< orphan_blocks
; i
++) {
558 struct page
*page
= get_meta_page(sbi
, start_blk
+ i
);
559 struct f2fs_orphan_block
*orphan_blk
;
561 orphan_blk
= (struct f2fs_orphan_block
*)page_address(page
);
562 for (j
= 0; j
< le32_to_cpu(orphan_blk
->entry_count
); j
++) {
563 nid_t ino
= le32_to_cpu(orphan_blk
->ino
[j
]);
564 err
= recover_orphan_inode(sbi
, ino
);
566 f2fs_put_page(page
, 1);
570 f2fs_put_page(page
, 1);
572 /* clear Orphan Flag */
573 clear_ckpt_flags(F2FS_CKPT(sbi
), CP_ORPHAN_PRESENT_FLAG
);
577 static void write_orphan_inodes(struct f2fs_sb_info
*sbi
, block_t start_blk
)
579 struct list_head
*head
;
580 struct f2fs_orphan_block
*orphan_blk
= NULL
;
581 unsigned int nentries
= 0;
582 unsigned short index
= 1;
583 unsigned short orphan_blocks
;
584 struct page
*page
= NULL
;
585 struct ino_entry
*orphan
= NULL
;
586 struct inode_management
*im
= &sbi
->im
[ORPHAN_INO
];
588 orphan_blocks
= GET_ORPHAN_BLOCKS(im
->ino_num
);
591 * we don't need to do spin_lock(&im->ino_lock) here, since all the
592 * orphan inode operations are covered under f2fs_lock_op().
593 * And, spin_lock should be avoided due to page operations below.
595 head
= &im
->ino_list
;
597 /* loop for each orphan inode entry and write them in Jornal block */
598 list_for_each_entry(orphan
, head
, list
) {
600 page
= grab_meta_page(sbi
, start_blk
++);
602 (struct f2fs_orphan_block
*)page_address(page
);
603 memset(orphan_blk
, 0, sizeof(*orphan_blk
));
606 orphan_blk
->ino
[nentries
++] = cpu_to_le32(orphan
->ino
);
608 if (nentries
== F2FS_ORPHANS_PER_BLOCK
) {
610 * an orphan block is full of 1020 entries,
611 * then we need to flush current orphan blocks
612 * and bring another one in memory
614 orphan_blk
->blk_addr
= cpu_to_le16(index
);
615 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
616 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
617 set_page_dirty(page
);
618 f2fs_put_page(page
, 1);
626 orphan_blk
->blk_addr
= cpu_to_le16(index
);
627 orphan_blk
->blk_count
= cpu_to_le16(orphan_blocks
);
628 orphan_blk
->entry_count
= cpu_to_le32(nentries
);
629 set_page_dirty(page
);
630 f2fs_put_page(page
, 1);
634 static struct page
*validate_checkpoint(struct f2fs_sb_info
*sbi
,
635 block_t cp_addr
, unsigned long long *version
)
637 struct page
*cp_page_1
, *cp_page_2
= NULL
;
638 unsigned long blk_size
= sbi
->blocksize
;
639 struct f2fs_checkpoint
*cp_block
;
640 unsigned long long cur_version
= 0, pre_version
= 0;
644 /* Read the 1st cp block in this CP pack */
645 cp_page_1
= get_meta_page(sbi
, cp_addr
);
647 /* get the version number */
648 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_1
);
649 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
650 if (crc_offset
>= blk_size
)
653 crc
= le32_to_cpu(*((__le32
*)((unsigned char *)cp_block
+ crc_offset
)));
654 if (!f2fs_crc_valid(sbi
, crc
, cp_block
, crc_offset
))
657 pre_version
= cur_cp_version(cp_block
);
659 /* Read the 2nd cp block in this CP pack */
660 cp_addr
+= le32_to_cpu(cp_block
->cp_pack_total_block_count
) - 1;
661 cp_page_2
= get_meta_page(sbi
, cp_addr
);
663 cp_block
= (struct f2fs_checkpoint
*)page_address(cp_page_2
);
664 crc_offset
= le32_to_cpu(cp_block
->checksum_offset
);
665 if (crc_offset
>= blk_size
)
668 crc
= le32_to_cpu(*((__le32
*)((unsigned char *)cp_block
+ crc_offset
)));
669 if (!f2fs_crc_valid(sbi
, crc
, cp_block
, crc_offset
))
672 cur_version
= cur_cp_version(cp_block
);
674 if (cur_version
== pre_version
) {
675 *version
= cur_version
;
676 f2fs_put_page(cp_page_2
, 1);
680 f2fs_put_page(cp_page_2
, 1);
682 f2fs_put_page(cp_page_1
, 1);
686 int get_valid_checkpoint(struct f2fs_sb_info
*sbi
)
688 struct f2fs_checkpoint
*cp_block
;
689 struct f2fs_super_block
*fsb
= sbi
->raw_super
;
690 struct page
*cp1
, *cp2
, *cur_page
;
691 unsigned long blk_size
= sbi
->blocksize
;
692 unsigned long long cp1_version
= 0, cp2_version
= 0;
693 unsigned long long cp_start_blk_no
;
694 unsigned int cp_blks
= 1 + __cp_payload(sbi
);
698 sbi
->ckpt
= kzalloc(cp_blks
* blk_size
, GFP_KERNEL
);
702 * Finding out valid cp block involves read both
703 * sets( cp pack1 and cp pack 2)
705 cp_start_blk_no
= le32_to_cpu(fsb
->cp_blkaddr
);
706 cp1
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp1_version
);
708 /* The second checkpoint pack should start at the next segment */
709 cp_start_blk_no
+= ((unsigned long long)1) <<
710 le32_to_cpu(fsb
->log_blocks_per_seg
);
711 cp2
= validate_checkpoint(sbi
, cp_start_blk_no
, &cp2_version
);
714 if (ver_after(cp2_version
, cp1_version
))
726 cp_block
= (struct f2fs_checkpoint
*)page_address(cur_page
);
727 memcpy(sbi
->ckpt
, cp_block
, blk_size
);
729 /* Sanity checking of checkpoint */
730 if (sanity_check_ckpt(sbi
))
736 cp_blk_no
= le32_to_cpu(fsb
->cp_blkaddr
);
738 cp_blk_no
+= 1 << le32_to_cpu(fsb
->log_blocks_per_seg
);
740 for (i
= 1; i
< cp_blks
; i
++) {
741 void *sit_bitmap_ptr
;
742 unsigned char *ckpt
= (unsigned char *)sbi
->ckpt
;
744 cur_page
= get_meta_page(sbi
, cp_blk_no
+ i
);
745 sit_bitmap_ptr
= page_address(cur_page
);
746 memcpy(ckpt
+ i
* blk_size
, sit_bitmap_ptr
, blk_size
);
747 f2fs_put_page(cur_page
, 1);
750 f2fs_put_page(cp1
, 1);
751 f2fs_put_page(cp2
, 1);
759 static void __add_dirty_inode(struct inode
*inode
, enum inode_type type
)
761 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
762 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
763 int flag
= (type
== DIR_INODE
) ? FI_DIRTY_DIR
: FI_DIRTY_FILE
;
765 if (is_inode_flag_set(fi
, flag
))
768 set_inode_flag(fi
, flag
);
769 list_add_tail(&fi
->dirty_list
, &sbi
->inode_list
[type
]);
770 stat_inc_dirty_inode(sbi
, type
);
773 static void __remove_dirty_inode(struct inode
*inode
, enum inode_type type
)
775 struct f2fs_inode_info
*fi
= F2FS_I(inode
);
776 int flag
= (type
== DIR_INODE
) ? FI_DIRTY_DIR
: FI_DIRTY_FILE
;
778 if (get_dirty_pages(inode
) ||
779 !is_inode_flag_set(F2FS_I(inode
), flag
))
782 list_del_init(&fi
->dirty_list
);
783 clear_inode_flag(fi
, flag
);
784 stat_dec_dirty_inode(F2FS_I_SB(inode
), type
);
787 void update_dirty_page(struct inode
*inode
, struct page
*page
)
789 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
790 enum inode_type type
= S_ISDIR(inode
->i_mode
) ? DIR_INODE
: FILE_INODE
;
792 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
793 !S_ISLNK(inode
->i_mode
))
796 if (type
!= FILE_INODE
|| test_opt(sbi
, DATA_FLUSH
)) {
797 spin_lock(&sbi
->inode_lock
[type
]);
798 __add_dirty_inode(inode
, type
);
799 spin_unlock(&sbi
->inode_lock
[type
]);
802 inode_inc_dirty_pages(inode
);
803 SetPagePrivate(page
);
804 f2fs_trace_pid(page
);
807 void remove_dirty_inode(struct inode
*inode
)
809 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
810 enum inode_type type
= S_ISDIR(inode
->i_mode
) ? DIR_INODE
: FILE_INODE
;
812 if (!S_ISDIR(inode
->i_mode
) && !S_ISREG(inode
->i_mode
) &&
813 !S_ISLNK(inode
->i_mode
))
816 if (type
== FILE_INODE
&& !test_opt(sbi
, DATA_FLUSH
))
819 spin_lock(&sbi
->inode_lock
[type
]);
820 __remove_dirty_inode(inode
, type
);
821 spin_unlock(&sbi
->inode_lock
[type
]);
824 int sync_dirty_inodes(struct f2fs_sb_info
*sbi
, enum inode_type type
)
826 struct list_head
*head
;
828 struct f2fs_inode_info
*fi
;
829 bool is_dir
= (type
== DIR_INODE
);
831 trace_f2fs_sync_dirty_inodes_enter(sbi
->sb
, is_dir
,
832 get_pages(sbi
, is_dir
?
833 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
));
835 if (unlikely(f2fs_cp_error(sbi
)))
838 spin_lock(&sbi
->inode_lock
[type
]);
840 head
= &sbi
->inode_list
[type
];
841 if (list_empty(head
)) {
842 spin_unlock(&sbi
->inode_lock
[type
]);
843 trace_f2fs_sync_dirty_inodes_exit(sbi
->sb
, is_dir
,
844 get_pages(sbi
, is_dir
?
845 F2FS_DIRTY_DENTS
: F2FS_DIRTY_DATA
));
848 fi
= list_entry(head
->next
, struct f2fs_inode_info
, dirty_list
);
849 inode
= igrab(&fi
->vfs_inode
);
850 spin_unlock(&sbi
->inode_lock
[type
]);
852 filemap_fdatawrite(inode
->i_mapping
);
856 * We should submit bio, since it exists several
857 * wribacking dentry pages in the freeing inode.
859 f2fs_submit_merged_bio(sbi
, DATA
, WRITE
);
866 * Freeze all the FS-operations for checkpoint.
868 static int block_operations(struct f2fs_sb_info
*sbi
)
870 struct writeback_control wbc
= {
871 .sync_mode
= WB_SYNC_ALL
,
872 .nr_to_write
= LONG_MAX
,
875 struct blk_plug plug
;
878 blk_start_plug(&plug
);
882 /* write all the dirty dentry pages */
883 if (get_pages(sbi
, F2FS_DIRTY_DENTS
)) {
884 f2fs_unlock_all(sbi
);
885 err
= sync_dirty_inodes(sbi
, DIR_INODE
);
888 goto retry_flush_dents
;
892 * POR: we should ensure that there are no dirty node pages
893 * until finishing nat/sit flush.
896 down_write(&sbi
->node_write
);
898 if (get_pages(sbi
, F2FS_DIRTY_NODES
)) {
899 up_write(&sbi
->node_write
);
900 err
= sync_node_pages(sbi
, &wbc
);
902 f2fs_unlock_all(sbi
);
905 goto retry_flush_nodes
;
908 blk_finish_plug(&plug
);
912 static void unblock_operations(struct f2fs_sb_info
*sbi
)
914 up_write(&sbi
->node_write
);
915 f2fs_unlock_all(sbi
);
918 static void wait_on_all_pages_writeback(struct f2fs_sb_info
*sbi
)
923 prepare_to_wait(&sbi
->cp_wait
, &wait
, TASK_UNINTERRUPTIBLE
);
925 if (!atomic_read(&sbi
->nr_wb_bios
))
928 io_schedule_timeout(5*HZ
);
930 finish_wait(&sbi
->cp_wait
, &wait
);
933 static int do_checkpoint(struct f2fs_sb_info
*sbi
, struct cp_control
*cpc
)
935 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
936 struct curseg_info
*curseg
= CURSEG_I(sbi
, CURSEG_WARM_NODE
);
937 struct f2fs_nm_info
*nm_i
= NM_I(sbi
);
938 unsigned long orphan_num
= sbi
->im
[ORPHAN_INO
].ino_num
;
939 nid_t last_nid
= nm_i
->next_scan_nid
;
941 unsigned int data_sum_blocks
, orphan_blocks
;
944 int cp_payload_blks
= __cp_payload(sbi
);
945 block_t discard_blk
= NEXT_FREE_BLKADDR(sbi
, curseg
);
946 bool invalidate
= false;
947 struct super_block
*sb
= sbi
->sb
;
948 struct curseg_info
*seg_i
= CURSEG_I(sbi
, CURSEG_HOT_NODE
);
952 * This avoids to conduct wrong roll-forward operations and uses
953 * metapages, so should be called prior to sync_meta_pages below.
955 if (discard_next_dnode(sbi
, discard_blk
))
958 /* Flush all the NAT/SIT pages */
959 while (get_pages(sbi
, F2FS_DIRTY_META
)) {
960 sync_meta_pages(sbi
, META
, LONG_MAX
);
961 if (unlikely(f2fs_cp_error(sbi
)))
965 next_free_nid(sbi
, &last_nid
);
969 * version number is already updated
971 ckpt
->elapsed_time
= cpu_to_le64(get_mtime(sbi
));
972 ckpt
->valid_block_count
= cpu_to_le64(valid_user_blocks(sbi
));
973 ckpt
->free_segment_count
= cpu_to_le32(free_segments(sbi
));
974 for (i
= 0; i
< NR_CURSEG_NODE_TYPE
; i
++) {
975 ckpt
->cur_node_segno
[i
] =
976 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_NODE
));
977 ckpt
->cur_node_blkoff
[i
] =
978 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_NODE
));
979 ckpt
->alloc_type
[i
+ CURSEG_HOT_NODE
] =
980 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_NODE
);
982 for (i
= 0; i
< NR_CURSEG_DATA_TYPE
; i
++) {
983 ckpt
->cur_data_segno
[i
] =
984 cpu_to_le32(curseg_segno(sbi
, i
+ CURSEG_HOT_DATA
));
985 ckpt
->cur_data_blkoff
[i
] =
986 cpu_to_le16(curseg_blkoff(sbi
, i
+ CURSEG_HOT_DATA
));
987 ckpt
->alloc_type
[i
+ CURSEG_HOT_DATA
] =
988 curseg_alloc_type(sbi
, i
+ CURSEG_HOT_DATA
);
991 ckpt
->valid_node_count
= cpu_to_le32(valid_node_count(sbi
));
992 ckpt
->valid_inode_count
= cpu_to_le32(valid_inode_count(sbi
));
993 ckpt
->next_free_nid
= cpu_to_le32(last_nid
);
995 /* 2 cp + n data seg summary + orphan inode blocks */
996 data_sum_blocks
= npages_for_summary_flush(sbi
, false);
997 if (data_sum_blocks
< NR_CURSEG_DATA_TYPE
)
998 set_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
1000 clear_ckpt_flags(ckpt
, CP_COMPACT_SUM_FLAG
);
1002 orphan_blocks
= GET_ORPHAN_BLOCKS(orphan_num
);
1003 ckpt
->cp_pack_start_sum
= cpu_to_le32(1 + cp_payload_blks
+
1006 if (__remain_node_summaries(cpc
->reason
))
1007 ckpt
->cp_pack_total_block_count
= cpu_to_le32(F2FS_CP_PACKS
+
1008 cp_payload_blks
+ data_sum_blocks
+
1009 orphan_blocks
+ NR_CURSEG_NODE_TYPE
);
1011 ckpt
->cp_pack_total_block_count
= cpu_to_le32(F2FS_CP_PACKS
+
1012 cp_payload_blks
+ data_sum_blocks
+
1015 if (cpc
->reason
== CP_UMOUNT
)
1016 set_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
1018 clear_ckpt_flags(ckpt
, CP_UMOUNT_FLAG
);
1020 if (cpc
->reason
== CP_FASTBOOT
)
1021 set_ckpt_flags(ckpt
, CP_FASTBOOT_FLAG
);
1023 clear_ckpt_flags(ckpt
, CP_FASTBOOT_FLAG
);
1026 set_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
1028 clear_ckpt_flags(ckpt
, CP_ORPHAN_PRESENT_FLAG
);
1030 if (is_sbi_flag_set(sbi
, SBI_NEED_FSCK
))
1031 set_ckpt_flags(ckpt
, CP_FSCK_FLAG
);
1033 /* update SIT/NAT bitmap */
1034 get_sit_bitmap(sbi
, __bitmap_ptr(sbi
, SIT_BITMAP
));
1035 get_nat_bitmap(sbi
, __bitmap_ptr(sbi
, NAT_BITMAP
));
1037 crc32
= f2fs_crc32(sbi
, ckpt
, le32_to_cpu(ckpt
->checksum_offset
));
1038 *((__le32
*)((unsigned char *)ckpt
+
1039 le32_to_cpu(ckpt
->checksum_offset
)))
1040 = cpu_to_le32(crc32
);
1042 start_blk
= __start_cp_addr(sbi
);
1044 /* need to wait for end_io results */
1045 wait_on_all_pages_writeback(sbi
);
1046 if (unlikely(f2fs_cp_error(sbi
)))
1049 /* write out checkpoint buffer at block 0 */
1050 update_meta_page(sbi
, ckpt
, start_blk
++);
1052 for (i
= 1; i
< 1 + cp_payload_blks
; i
++)
1053 update_meta_page(sbi
, (char *)ckpt
+ i
* F2FS_BLKSIZE
,
1057 write_orphan_inodes(sbi
, start_blk
);
1058 start_blk
+= orphan_blocks
;
1061 write_data_summaries(sbi
, start_blk
);
1062 start_blk
+= data_sum_blocks
;
1064 /* Record write statistics in the hot node summary */
1065 kbytes_written
= sbi
->kbytes_written
;
1066 if (sb
->s_bdev
->bd_part
)
1067 kbytes_written
+= BD_PART_WRITTEN(sbi
);
1069 seg_i
->journal
->info
.kbytes_written
= cpu_to_le64(kbytes_written
);
1071 if (__remain_node_summaries(cpc
->reason
)) {
1072 write_node_summaries(sbi
, start_blk
);
1073 start_blk
+= NR_CURSEG_NODE_TYPE
;
1076 /* writeout checkpoint block */
1077 update_meta_page(sbi
, ckpt
, start_blk
);
1079 /* wait for previous submitted node/meta pages writeback */
1080 wait_on_all_pages_writeback(sbi
);
1082 if (unlikely(f2fs_cp_error(sbi
)))
1085 filemap_fdatawait_range(NODE_MAPPING(sbi
), 0, LLONG_MAX
);
1086 filemap_fdatawait_range(META_MAPPING(sbi
), 0, LLONG_MAX
);
1088 /* update user_block_counts */
1089 sbi
->last_valid_block_count
= sbi
->total_valid_block_count
;
1090 percpu_counter_set(&sbi
->alloc_valid_block_count
, 0);
1092 /* Here, we only have one bio having CP pack */
1093 sync_meta_pages(sbi
, META_FLUSH
, LONG_MAX
);
1095 /* wait for previous submitted meta pages writeback */
1096 wait_on_all_pages_writeback(sbi
);
1099 * invalidate meta page which is used temporarily for zeroing out
1100 * block at the end of warm node chain.
1103 invalidate_mapping_pages(META_MAPPING(sbi
), discard_blk
,
1106 release_ino_entry(sbi
, false);
1108 if (unlikely(f2fs_cp_error(sbi
)))
1111 clear_prefree_segments(sbi
, cpc
);
1112 clear_sbi_flag(sbi
, SBI_IS_DIRTY
);
1118 * We guarantee that this checkpoint procedure will not fail.
1120 int write_checkpoint(struct f2fs_sb_info
*sbi
, struct cp_control
*cpc
)
1122 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1123 unsigned long long ckpt_ver
;
1126 mutex_lock(&sbi
->cp_mutex
);
1128 if (!is_sbi_flag_set(sbi
, SBI_IS_DIRTY
) &&
1129 (cpc
->reason
== CP_FASTBOOT
|| cpc
->reason
== CP_SYNC
||
1130 (cpc
->reason
== CP_DISCARD
&& !sbi
->discard_blks
)))
1132 if (unlikely(f2fs_cp_error(sbi
))) {
1136 if (f2fs_readonly(sbi
->sb
)) {
1141 trace_f2fs_write_checkpoint(sbi
->sb
, cpc
->reason
, "start block_ops");
1143 err
= block_operations(sbi
);
1147 trace_f2fs_write_checkpoint(sbi
->sb
, cpc
->reason
, "finish block_ops");
1149 f2fs_flush_merged_bios(sbi
);
1152 * update checkpoint pack index
1153 * Increase the version number so that
1154 * SIT entries and seg summaries are written at correct place
1156 ckpt_ver
= cur_cp_version(ckpt
);
1157 ckpt
->checkpoint_ver
= cpu_to_le64(++ckpt_ver
);
1159 /* write cached NAT/SIT entries to NAT/SIT area */
1160 flush_nat_entries(sbi
);
1161 flush_sit_entries(sbi
, cpc
);
1163 /* unlock all the fs_lock[] in do_checkpoint() */
1164 err
= do_checkpoint(sbi
, cpc
);
1166 unblock_operations(sbi
);
1167 stat_inc_cp_count(sbi
->stat_info
);
1169 if (cpc
->reason
== CP_RECOVERY
)
1170 f2fs_msg(sbi
->sb
, KERN_NOTICE
,
1171 "checkpoint: version = %llx", ckpt_ver
);
1173 /* do checkpoint periodically */
1174 f2fs_update_time(sbi
, CP_TIME
);
1175 trace_f2fs_write_checkpoint(sbi
->sb
, cpc
->reason
, "finish checkpoint");
1177 mutex_unlock(&sbi
->cp_mutex
);
1181 void init_ino_entry_info(struct f2fs_sb_info
*sbi
)
1185 for (i
= 0; i
< MAX_INO_ENTRY
; i
++) {
1186 struct inode_management
*im
= &sbi
->im
[i
];
1188 INIT_RADIX_TREE(&im
->ino_root
, GFP_ATOMIC
);
1189 spin_lock_init(&im
->ino_lock
);
1190 INIT_LIST_HEAD(&im
->ino_list
);
1194 sbi
->max_orphans
= (sbi
->blocks_per_seg
- F2FS_CP_PACKS
-
1195 NR_CURSEG_TYPE
- __cp_payload(sbi
)) *
1196 F2FS_ORPHANS_PER_BLOCK
;
1199 int __init
create_checkpoint_caches(void)
1201 ino_entry_slab
= f2fs_kmem_cache_create("f2fs_ino_entry",
1202 sizeof(struct ino_entry
));
1203 if (!ino_entry_slab
)
1205 inode_entry_slab
= f2fs_kmem_cache_create("f2fs_inode_entry",
1206 sizeof(struct inode_entry
));
1207 if (!inode_entry_slab
) {
1208 kmem_cache_destroy(ino_entry_slab
);
1214 void destroy_checkpoint_caches(void)
1216 kmem_cache_destroy(ino_entry_slab
);
1217 kmem_cache_destroy(inode_entry_slab
);