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/f2fs_fs.h>
13 #include <linux/buffer_head.h>
14 #include <linux/mpage.h>
15 #include <linux/writeback.h>
16 #include <linux/backing-dev.h>
17 #include <linux/pagevec.h>
18 #include <linux/blkdev.h>
19 #include <linux/bio.h>
20 #include <linux/prefetch.h>
21 #include <linux/uio.h>
22 #include <linux/cleancache.h>
28 #include <trace/events/f2fs.h>
30 static void f2fs_read_end_io(struct bio
*bio
)
35 if (f2fs_bio_encrypted(bio
)) {
37 f2fs_release_crypto_ctx(bio
->bi_private
);
39 f2fs_end_io_crypto_work(bio
->bi_private
, bio
);
44 bio_for_each_segment_all(bvec
, bio
, i
) {
45 struct page
*page
= bvec
->bv_page
;
48 SetPageUptodate(page
);
50 ClearPageUptodate(page
);
58 static void f2fs_write_end_io(struct bio
*bio
)
60 struct f2fs_sb_info
*sbi
= bio
->bi_private
;
64 bio_for_each_segment_all(bvec
, bio
, i
) {
65 struct page
*page
= bvec
->bv_page
;
67 f2fs_restore_and_release_control_page(&page
);
69 if (unlikely(bio
->bi_error
)) {
71 set_bit(AS_EIO
, &page
->mapping
->flags
);
72 f2fs_stop_checkpoint(sbi
);
74 end_page_writeback(page
);
75 dec_page_count(sbi
, F2FS_WRITEBACK
);
78 if (!get_pages(sbi
, F2FS_WRITEBACK
) &&
79 !list_empty(&sbi
->cp_wait
.task_list
))
80 wake_up(&sbi
->cp_wait
);
86 * Low-level block read/write IO operations.
88 static struct bio
*__bio_alloc(struct f2fs_sb_info
*sbi
, block_t blk_addr
,
89 int npages
, bool is_read
)
93 bio
= f2fs_bio_alloc(npages
);
95 bio
->bi_bdev
= sbi
->sb
->s_bdev
;
96 bio
->bi_iter
.bi_sector
= SECTOR_FROM_BLOCK(blk_addr
);
97 bio
->bi_end_io
= is_read
? f2fs_read_end_io
: f2fs_write_end_io
;
98 bio
->bi_private
= is_read
? NULL
: sbi
;
103 static void __submit_merged_bio(struct f2fs_bio_info
*io
)
105 struct f2fs_io_info
*fio
= &io
->fio
;
110 if (is_read_io(fio
->rw
))
111 trace_f2fs_submit_read_bio(io
->sbi
->sb
, fio
, io
->bio
);
113 trace_f2fs_submit_write_bio(io
->sbi
->sb
, fio
, io
->bio
);
115 submit_bio(fio
->rw
, io
->bio
);
119 bool is_merged_page(struct f2fs_sb_info
*sbi
, struct page
*page
,
122 enum page_type btype
= PAGE_TYPE_OF_BIO(type
);
123 struct f2fs_bio_info
*io
= &sbi
->write_io
[btype
];
124 struct bio_vec
*bvec
;
128 down_read(&io
->io_rwsem
);
130 up_read(&io
->io_rwsem
);
134 bio_for_each_segment_all(bvec
, io
->bio
, i
) {
136 if (bvec
->bv_page
->mapping
) {
137 target
= bvec
->bv_page
;
139 struct f2fs_crypto_ctx
*ctx
;
142 ctx
= (struct f2fs_crypto_ctx
*)page_private(
144 target
= ctx
->w
.control_page
;
147 if (page
== target
) {
148 up_read(&io
->io_rwsem
);
153 up_read(&io
->io_rwsem
);
157 void f2fs_submit_merged_bio(struct f2fs_sb_info
*sbi
,
158 enum page_type type
, int rw
)
160 enum page_type btype
= PAGE_TYPE_OF_BIO(type
);
161 struct f2fs_bio_info
*io
;
163 io
= is_read_io(rw
) ? &sbi
->read_io
: &sbi
->write_io
[btype
];
165 down_write(&io
->io_rwsem
);
167 /* change META to META_FLUSH in the checkpoint procedure */
168 if (type
>= META_FLUSH
) {
169 io
->fio
.type
= META_FLUSH
;
170 if (test_opt(sbi
, NOBARRIER
))
171 io
->fio
.rw
= WRITE_FLUSH
| REQ_META
| REQ_PRIO
;
173 io
->fio
.rw
= WRITE_FLUSH_FUA
| REQ_META
| REQ_PRIO
;
175 __submit_merged_bio(io
);
176 up_write(&io
->io_rwsem
);
180 * Fill the locked page with data located in the block address.
181 * Return unlocked page.
183 int f2fs_submit_page_bio(struct f2fs_io_info
*fio
)
186 struct page
*page
= fio
->encrypted_page
? fio
->encrypted_page
: fio
->page
;
188 trace_f2fs_submit_page_bio(page
, fio
);
189 f2fs_trace_ios(fio
, 0);
191 /* Allocate a new bio */
192 bio
= __bio_alloc(fio
->sbi
, fio
->blk_addr
, 1, is_read_io(fio
->rw
));
194 if (bio_add_page(bio
, page
, PAGE_CACHE_SIZE
, 0) < PAGE_CACHE_SIZE
) {
199 submit_bio(fio
->rw
, bio
);
203 void f2fs_submit_page_mbio(struct f2fs_io_info
*fio
)
205 struct f2fs_sb_info
*sbi
= fio
->sbi
;
206 enum page_type btype
= PAGE_TYPE_OF_BIO(fio
->type
);
207 struct f2fs_bio_info
*io
;
208 bool is_read
= is_read_io(fio
->rw
);
209 struct page
*bio_page
;
211 io
= is_read
? &sbi
->read_io
: &sbi
->write_io
[btype
];
213 verify_block_addr(sbi
, fio
->blk_addr
);
215 down_write(&io
->io_rwsem
);
218 inc_page_count(sbi
, F2FS_WRITEBACK
);
220 if (io
->bio
&& (io
->last_block_in_bio
!= fio
->blk_addr
- 1 ||
221 io
->fio
.rw
!= fio
->rw
))
222 __submit_merged_bio(io
);
224 if (io
->bio
== NULL
) {
225 int bio_blocks
= MAX_BIO_BLOCKS(sbi
);
227 io
->bio
= __bio_alloc(sbi
, fio
->blk_addr
, bio_blocks
, is_read
);
231 bio_page
= fio
->encrypted_page
? fio
->encrypted_page
: fio
->page
;
233 if (bio_add_page(io
->bio
, bio_page
, PAGE_CACHE_SIZE
, 0) <
235 __submit_merged_bio(io
);
239 io
->last_block_in_bio
= fio
->blk_addr
;
240 f2fs_trace_ios(fio
, 0);
242 up_write(&io
->io_rwsem
);
243 trace_f2fs_submit_page_mbio(fio
->page
, fio
);
247 * Lock ordering for the change of data block address:
250 * update block addresses in the node page
252 void set_data_blkaddr(struct dnode_of_data
*dn
)
254 struct f2fs_node
*rn
;
256 struct page
*node_page
= dn
->node_page
;
257 unsigned int ofs_in_node
= dn
->ofs_in_node
;
259 f2fs_wait_on_page_writeback(node_page
, NODE
);
261 rn
= F2FS_NODE(node_page
);
263 /* Get physical address of data block */
264 addr_array
= blkaddr_in_node(rn
);
265 addr_array
[ofs_in_node
] = cpu_to_le32(dn
->data_blkaddr
);
266 if (set_page_dirty(node_page
))
267 dn
->node_changed
= true;
270 int reserve_new_block(struct dnode_of_data
*dn
)
272 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dn
->inode
);
274 if (unlikely(is_inode_flag_set(F2FS_I(dn
->inode
), FI_NO_ALLOC
)))
276 if (unlikely(!inc_valid_block_count(sbi
, dn
->inode
, 1)))
279 trace_f2fs_reserve_new_block(dn
->inode
, dn
->nid
, dn
->ofs_in_node
);
281 dn
->data_blkaddr
= NEW_ADDR
;
282 set_data_blkaddr(dn
);
283 mark_inode_dirty(dn
->inode
);
288 int f2fs_reserve_block(struct dnode_of_data
*dn
, pgoff_t index
)
290 bool need_put
= dn
->inode_page
? false : true;
293 err
= get_dnode_of_data(dn
, index
, ALLOC_NODE
);
297 if (dn
->data_blkaddr
== NULL_ADDR
)
298 err
= reserve_new_block(dn
);
304 int f2fs_get_block(struct dnode_of_data
*dn
, pgoff_t index
)
306 struct extent_info ei
;
307 struct inode
*inode
= dn
->inode
;
309 if (f2fs_lookup_extent_cache(inode
, index
, &ei
)) {
310 dn
->data_blkaddr
= ei
.blk
+ index
- ei
.fofs
;
314 return f2fs_reserve_block(dn
, index
);
317 struct page
*get_read_data_page(struct inode
*inode
, pgoff_t index
,
318 int rw
, bool for_write
)
320 struct address_space
*mapping
= inode
->i_mapping
;
321 struct dnode_of_data dn
;
323 struct extent_info ei
;
325 struct f2fs_io_info fio
= {
326 .sbi
= F2FS_I_SB(inode
),
329 .encrypted_page
= NULL
,
332 if (f2fs_encrypted_inode(inode
) && S_ISREG(inode
->i_mode
))
333 return read_mapping_page(mapping
, index
, NULL
);
335 page
= f2fs_grab_cache_page(mapping
, index
, for_write
);
337 return ERR_PTR(-ENOMEM
);
339 if (f2fs_lookup_extent_cache(inode
, index
, &ei
)) {
340 dn
.data_blkaddr
= ei
.blk
+ index
- ei
.fofs
;
344 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
345 err
= get_dnode_of_data(&dn
, index
, LOOKUP_NODE
);
350 if (unlikely(dn
.data_blkaddr
== NULL_ADDR
)) {
355 if (PageUptodate(page
)) {
361 * A new dentry page is allocated but not able to be written, since its
362 * new inode page couldn't be allocated due to -ENOSPC.
363 * In such the case, its blkaddr can be remained as NEW_ADDR.
364 * see, f2fs_add_link -> get_new_data_page -> init_inode_metadata.
366 if (dn
.data_blkaddr
== NEW_ADDR
) {
367 zero_user_segment(page
, 0, PAGE_CACHE_SIZE
);
368 SetPageUptodate(page
);
373 fio
.blk_addr
= dn
.data_blkaddr
;
375 err
= f2fs_submit_page_bio(&fio
);
381 f2fs_put_page(page
, 1);
385 struct page
*find_data_page(struct inode
*inode
, pgoff_t index
)
387 struct address_space
*mapping
= inode
->i_mapping
;
390 page
= find_get_page(mapping
, index
);
391 if (page
&& PageUptodate(page
))
393 f2fs_put_page(page
, 0);
395 page
= get_read_data_page(inode
, index
, READ_SYNC
, false);
399 if (PageUptodate(page
))
402 wait_on_page_locked(page
);
403 if (unlikely(!PageUptodate(page
))) {
404 f2fs_put_page(page
, 0);
405 return ERR_PTR(-EIO
);
411 * If it tries to access a hole, return an error.
412 * Because, the callers, functions in dir.c and GC, should be able to know
413 * whether this page exists or not.
415 struct page
*get_lock_data_page(struct inode
*inode
, pgoff_t index
,
418 struct address_space
*mapping
= inode
->i_mapping
;
421 page
= get_read_data_page(inode
, index
, READ_SYNC
, for_write
);
425 /* wait for read completion */
427 if (unlikely(!PageUptodate(page
))) {
428 f2fs_put_page(page
, 1);
429 return ERR_PTR(-EIO
);
431 if (unlikely(page
->mapping
!= mapping
)) {
432 f2fs_put_page(page
, 1);
439 * Caller ensures that this data page is never allocated.
440 * A new zero-filled data page is allocated in the page cache.
442 * Also, caller should grab and release a rwsem by calling f2fs_lock_op() and
444 * Note that, ipage is set only by make_empty_dir, and if any error occur,
445 * ipage should be released by this function.
447 struct page
*get_new_data_page(struct inode
*inode
,
448 struct page
*ipage
, pgoff_t index
, bool new_i_size
)
450 struct address_space
*mapping
= inode
->i_mapping
;
452 struct dnode_of_data dn
;
455 page
= f2fs_grab_cache_page(mapping
, index
, true);
458 * before exiting, we should make sure ipage will be released
459 * if any error occur.
461 f2fs_put_page(ipage
, 1);
462 return ERR_PTR(-ENOMEM
);
465 set_new_dnode(&dn
, inode
, ipage
, NULL
, 0);
466 err
= f2fs_reserve_block(&dn
, index
);
468 f2fs_put_page(page
, 1);
474 if (PageUptodate(page
))
477 if (dn
.data_blkaddr
== NEW_ADDR
) {
478 zero_user_segment(page
, 0, PAGE_CACHE_SIZE
);
479 SetPageUptodate(page
);
481 f2fs_put_page(page
, 1);
483 /* if ipage exists, blkaddr should be NEW_ADDR */
484 f2fs_bug_on(F2FS_I_SB(inode
), ipage
);
485 page
= get_lock_data_page(inode
, index
, true);
490 if (new_i_size
&& i_size_read(inode
) <
491 ((loff_t
)(index
+ 1) << PAGE_CACHE_SHIFT
)) {
492 i_size_write(inode
, ((loff_t
)(index
+ 1) << PAGE_CACHE_SHIFT
));
493 /* Only the directory inode sets new_i_size */
494 set_inode_flag(F2FS_I(inode
), FI_UPDATE_DIR
);
499 static int __allocate_data_block(struct dnode_of_data
*dn
)
501 struct f2fs_sb_info
*sbi
= F2FS_I_SB(dn
->inode
);
502 struct f2fs_inode_info
*fi
= F2FS_I(dn
->inode
);
503 struct f2fs_summary sum
;
505 int seg
= CURSEG_WARM_DATA
;
508 if (unlikely(is_inode_flag_set(F2FS_I(dn
->inode
), FI_NO_ALLOC
)))
511 dn
->data_blkaddr
= datablock_addr(dn
->node_page
, dn
->ofs_in_node
);
512 if (dn
->data_blkaddr
== NEW_ADDR
)
515 if (unlikely(!inc_valid_block_count(sbi
, dn
->inode
, 1)))
519 get_node_info(sbi
, dn
->nid
, &ni
);
520 set_summary(&sum
, dn
->nid
, dn
->ofs_in_node
, ni
.version
);
522 if (dn
->ofs_in_node
== 0 && dn
->inode_page
== dn
->node_page
)
523 seg
= CURSEG_DIRECT_IO
;
525 allocate_data_block(sbi
, NULL
, dn
->data_blkaddr
, &dn
->data_blkaddr
,
527 set_data_blkaddr(dn
);
530 fofs
= start_bidx_of_node(ofs_of_node(dn
->node_page
), fi
) +
532 if (i_size_read(dn
->inode
) < ((loff_t
)(fofs
+ 1) << PAGE_CACHE_SHIFT
))
533 i_size_write(dn
->inode
,
534 ((loff_t
)(fofs
+ 1) << PAGE_CACHE_SHIFT
));
538 static int __allocate_data_blocks(struct inode
*inode
, loff_t offset
,
541 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
542 struct dnode_of_data dn
;
543 u64 start
= F2FS_BYTES_TO_BLK(offset
);
544 u64 len
= F2FS_BYTES_TO_BLK(count
);
545 bool allocated
= false;
552 /* When reading holes, we need its node page */
553 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
554 err
= get_dnode_of_data(&dn
, start
, ALLOC_NODE
);
559 end_offset
= ADDRS_PER_PAGE(dn
.node_page
, F2FS_I(inode
));
561 while (dn
.ofs_in_node
< end_offset
&& len
) {
564 if (unlikely(f2fs_cp_error(sbi
))) {
569 blkaddr
= datablock_addr(dn
.node_page
, dn
.ofs_in_node
);
570 if (blkaddr
== NULL_ADDR
|| blkaddr
== NEW_ADDR
) {
571 err
= __allocate_data_block(&dn
);
582 sync_inode_page(&dn
);
587 f2fs_balance_fs(sbi
, allocated
);
593 sync_inode_page(&dn
);
597 f2fs_balance_fs(sbi
, allocated
);
602 * f2fs_map_blocks() now supported readahead/bmap/rw direct_IO with
603 * f2fs_map_blocks structure.
604 * If original data blocks are allocated, then give them to blockdev.
606 * a. preallocate requested block addresses
607 * b. do not use extent cache for better performance
608 * c. give the block addresses to blockdev
610 int f2fs_map_blocks(struct inode
*inode
, struct f2fs_map_blocks
*map
,
611 int create
, int flag
)
613 unsigned int maxblocks
= map
->m_len
;
614 struct dnode_of_data dn
;
615 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
616 int mode
= create
? ALLOC_NODE
: LOOKUP_NODE_RA
;
617 pgoff_t pgofs
, end_offset
;
618 int err
= 0, ofs
= 1;
619 struct extent_info ei
;
620 bool allocated
= false;
626 /* it only supports block size == page size */
627 pgofs
= (pgoff_t
)map
->m_lblk
;
629 if (f2fs_lookup_extent_cache(inode
, pgofs
, &ei
)) {
630 map
->m_pblk
= ei
.blk
+ pgofs
- ei
.fofs
;
631 map
->m_len
= min((pgoff_t
)maxblocks
, ei
.fofs
+ ei
.len
- pgofs
);
632 map
->m_flags
= F2FS_MAP_MAPPED
;
639 /* When reading holes, we need its node page */
640 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
641 err
= get_dnode_of_data(&dn
, pgofs
, mode
);
648 if (dn
.data_blkaddr
== NEW_ADDR
|| dn
.data_blkaddr
== NULL_ADDR
) {
650 if (unlikely(f2fs_cp_error(sbi
))) {
654 err
= __allocate_data_block(&dn
);
658 map
->m_flags
= F2FS_MAP_NEW
;
660 if (flag
!= F2FS_GET_BLOCK_FIEMAP
||
661 dn
.data_blkaddr
!= NEW_ADDR
) {
662 if (flag
== F2FS_GET_BLOCK_BMAP
)
668 * preallocated unwritten block should be mapped
671 if (dn
.data_blkaddr
== NEW_ADDR
)
672 map
->m_flags
= F2FS_MAP_UNWRITTEN
;
676 map
->m_flags
|= F2FS_MAP_MAPPED
;
677 map
->m_pblk
= dn
.data_blkaddr
;
680 end_offset
= ADDRS_PER_PAGE(dn
.node_page
, F2FS_I(inode
));
685 if (map
->m_len
>= maxblocks
)
688 if (dn
.ofs_in_node
>= end_offset
) {
690 sync_inode_page(&dn
);
695 f2fs_balance_fs(sbi
, allocated
);
700 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
701 err
= get_dnode_of_data(&dn
, pgofs
, mode
);
708 end_offset
= ADDRS_PER_PAGE(dn
.node_page
, F2FS_I(inode
));
711 blkaddr
= datablock_addr(dn
.node_page
, dn
.ofs_in_node
);
713 if (blkaddr
== NEW_ADDR
|| blkaddr
== NULL_ADDR
) {
715 if (unlikely(f2fs_cp_error(sbi
))) {
719 err
= __allocate_data_block(&dn
);
723 map
->m_flags
|= F2FS_MAP_NEW
;
724 blkaddr
= dn
.data_blkaddr
;
727 * we only merge preallocated unwritten blocks
730 if (flag
!= F2FS_GET_BLOCK_FIEMAP
||
736 /* Give more consecutive addresses for the readahead */
737 if ((map
->m_pblk
!= NEW_ADDR
&&
738 blkaddr
== (map
->m_pblk
+ ofs
)) ||
739 (map
->m_pblk
== NEW_ADDR
&&
740 blkaddr
== NEW_ADDR
)) {
750 sync_inode_page(&dn
);
756 f2fs_balance_fs(sbi
, allocated
);
759 trace_f2fs_map_blocks(inode
, map
, err
);
763 static int __get_data_block(struct inode
*inode
, sector_t iblock
,
764 struct buffer_head
*bh
, int create
, int flag
)
766 struct f2fs_map_blocks map
;
770 map
.m_len
= bh
->b_size
>> inode
->i_blkbits
;
772 ret
= f2fs_map_blocks(inode
, &map
, create
, flag
);
774 map_bh(bh
, inode
->i_sb
, map
.m_pblk
);
775 bh
->b_state
= (bh
->b_state
& ~F2FS_MAP_FLAGS
) | map
.m_flags
;
776 bh
->b_size
= map
.m_len
<< inode
->i_blkbits
;
781 static int get_data_block(struct inode
*inode
, sector_t iblock
,
782 struct buffer_head
*bh_result
, int create
, int flag
)
784 return __get_data_block(inode
, iblock
, bh_result
, create
, flag
);
787 static int get_data_block_dio(struct inode
*inode
, sector_t iblock
,
788 struct buffer_head
*bh_result
, int create
)
790 return __get_data_block(inode
, iblock
, bh_result
, create
,
794 static int get_data_block_bmap(struct inode
*inode
, sector_t iblock
,
795 struct buffer_head
*bh_result
, int create
)
797 /* Block number less than F2FS MAX BLOCKS */
798 if (unlikely(iblock
>= F2FS_I_SB(inode
)->max_file_blocks
))
801 return __get_data_block(inode
, iblock
, bh_result
, create
,
802 F2FS_GET_BLOCK_BMAP
);
805 static inline sector_t
logical_to_blk(struct inode
*inode
, loff_t offset
)
807 return (offset
>> inode
->i_blkbits
);
810 static inline loff_t
blk_to_logical(struct inode
*inode
, sector_t blk
)
812 return (blk
<< inode
->i_blkbits
);
815 int f2fs_fiemap(struct inode
*inode
, struct fiemap_extent_info
*fieinfo
,
818 struct buffer_head map_bh
;
819 sector_t start_blk
, last_blk
;
821 u64 logical
= 0, phys
= 0, size
= 0;
825 ret
= fiemap_check_flags(fieinfo
, FIEMAP_FLAG_SYNC
);
829 if (f2fs_has_inline_data(inode
)) {
830 ret
= f2fs_inline_data_fiemap(inode
, fieinfo
, start
, len
);
837 isize
= i_size_read(inode
);
841 if (start
+ len
> isize
)
844 if (logical_to_blk(inode
, len
) == 0)
845 len
= blk_to_logical(inode
, 1);
847 start_blk
= logical_to_blk(inode
, start
);
848 last_blk
= logical_to_blk(inode
, start
+ len
- 1);
851 memset(&map_bh
, 0, sizeof(struct buffer_head
));
854 ret
= get_data_block(inode
, start_blk
, &map_bh
, 0,
855 F2FS_GET_BLOCK_FIEMAP
);
860 if (!buffer_mapped(&map_bh
)) {
861 /* Go through holes util pass the EOF */
862 if (blk_to_logical(inode
, start_blk
++) < isize
)
864 /* Found a hole beyond isize means no more extents.
865 * Note that the premise is that filesystems don't
866 * punch holes beyond isize and keep size unchanged.
868 flags
|= FIEMAP_EXTENT_LAST
;
872 if (f2fs_encrypted_inode(inode
))
873 flags
|= FIEMAP_EXTENT_DATA_ENCRYPTED
;
875 ret
= fiemap_fill_next_extent(fieinfo
, logical
,
879 if (start_blk
> last_blk
|| ret
)
882 logical
= blk_to_logical(inode
, start_blk
);
883 phys
= blk_to_logical(inode
, map_bh
.b_blocknr
);
884 size
= map_bh
.b_size
;
886 if (buffer_unwritten(&map_bh
))
887 flags
= FIEMAP_EXTENT_UNWRITTEN
;
889 start_blk
+= logical_to_blk(inode
, size
);
893 if (fatal_signal_pending(current
))
906 * This function was originally taken from fs/mpage.c, and customized for f2fs.
907 * Major change was from block_size == page_size in f2fs by default.
909 static int f2fs_mpage_readpages(struct address_space
*mapping
,
910 struct list_head
*pages
, struct page
*page
,
913 struct bio
*bio
= NULL
;
915 sector_t last_block_in_bio
= 0;
916 struct inode
*inode
= mapping
->host
;
917 const unsigned blkbits
= inode
->i_blkbits
;
918 const unsigned blocksize
= 1 << blkbits
;
919 sector_t block_in_file
;
921 sector_t last_block_in_file
;
923 struct block_device
*bdev
= inode
->i_sb
->s_bdev
;
924 struct f2fs_map_blocks map
;
931 for (page_idx
= 0; nr_pages
; page_idx
++, nr_pages
--) {
933 prefetchw(&page
->flags
);
935 page
= list_entry(pages
->prev
, struct page
, lru
);
936 list_del(&page
->lru
);
937 if (add_to_page_cache_lru(page
, mapping
,
938 page
->index
, GFP_KERNEL
))
942 block_in_file
= (sector_t
)page
->index
;
943 last_block
= block_in_file
+ nr_pages
;
944 last_block_in_file
= (i_size_read(inode
) + blocksize
- 1) >>
946 if (last_block
> last_block_in_file
)
947 last_block
= last_block_in_file
;
950 * Map blocks using the previous result first.
952 if ((map
.m_flags
& F2FS_MAP_MAPPED
) &&
953 block_in_file
> map
.m_lblk
&&
954 block_in_file
< (map
.m_lblk
+ map
.m_len
))
958 * Then do more f2fs_map_blocks() calls until we are
959 * done with this page.
963 if (block_in_file
< last_block
) {
964 map
.m_lblk
= block_in_file
;
965 map
.m_len
= last_block
- block_in_file
;
967 if (f2fs_map_blocks(inode
, &map
, 0,
968 F2FS_GET_BLOCK_READ
))
972 if ((map
.m_flags
& F2FS_MAP_MAPPED
)) {
973 block_nr
= map
.m_pblk
+ block_in_file
- map
.m_lblk
;
974 SetPageMappedToDisk(page
);
976 if (!PageUptodate(page
) && !cleancache_get_page(page
)) {
977 SetPageUptodate(page
);
981 zero_user_segment(page
, 0, PAGE_CACHE_SIZE
);
982 SetPageUptodate(page
);
988 * This page will go to BIO. Do we need to send this
991 if (bio
&& (last_block_in_bio
!= block_nr
- 1)) {
993 submit_bio(READ
, bio
);
997 struct f2fs_crypto_ctx
*ctx
= NULL
;
999 if (f2fs_encrypted_inode(inode
) &&
1000 S_ISREG(inode
->i_mode
)) {
1002 ctx
= f2fs_get_crypto_ctx(inode
);
1004 goto set_error_page
;
1006 /* wait the page to be moved by cleaning */
1007 f2fs_wait_on_encrypted_page_writeback(
1008 F2FS_I_SB(inode
), block_nr
);
1011 bio
= bio_alloc(GFP_KERNEL
,
1012 min_t(int, nr_pages
, BIO_MAX_PAGES
));
1015 f2fs_release_crypto_ctx(ctx
);
1016 goto set_error_page
;
1018 bio
->bi_bdev
= bdev
;
1019 bio
->bi_iter
.bi_sector
= SECTOR_FROM_BLOCK(block_nr
);
1020 bio
->bi_end_io
= f2fs_read_end_io
;
1021 bio
->bi_private
= ctx
;
1024 if (bio_add_page(bio
, page
, blocksize
, 0) < blocksize
)
1025 goto submit_and_realloc
;
1027 last_block_in_bio
= block_nr
;
1031 zero_user_segment(page
, 0, PAGE_CACHE_SIZE
);
1036 submit_bio(READ
, bio
);
1042 page_cache_release(page
);
1044 BUG_ON(pages
&& !list_empty(pages
));
1046 submit_bio(READ
, bio
);
1050 static int f2fs_read_data_page(struct file
*file
, struct page
*page
)
1052 struct inode
*inode
= page
->mapping
->host
;
1055 trace_f2fs_readpage(page
, DATA
);
1057 /* If the file has inline data, try to read it directly */
1058 if (f2fs_has_inline_data(inode
))
1059 ret
= f2fs_read_inline_data(inode
, page
);
1061 ret
= f2fs_mpage_readpages(page
->mapping
, NULL
, page
, 1);
1065 static int f2fs_read_data_pages(struct file
*file
,
1066 struct address_space
*mapping
,
1067 struct list_head
*pages
, unsigned nr_pages
)
1069 struct inode
*inode
= file
->f_mapping
->host
;
1070 struct page
*page
= list_entry(pages
->prev
, struct page
, lru
);
1072 trace_f2fs_readpages(inode
, page
, nr_pages
);
1074 /* If the file has inline data, skip readpages */
1075 if (f2fs_has_inline_data(inode
))
1078 return f2fs_mpage_readpages(mapping
, pages
, NULL
, nr_pages
);
1081 int do_write_data_page(struct f2fs_io_info
*fio
)
1083 struct page
*page
= fio
->page
;
1084 struct inode
*inode
= page
->mapping
->host
;
1085 struct dnode_of_data dn
;
1088 set_new_dnode(&dn
, inode
, NULL
, NULL
, 0);
1089 err
= get_dnode_of_data(&dn
, page
->index
, LOOKUP_NODE
);
1093 fio
->blk_addr
= dn
.data_blkaddr
;
1095 /* This page is already truncated */
1096 if (fio
->blk_addr
== NULL_ADDR
) {
1097 ClearPageUptodate(page
);
1101 if (f2fs_encrypted_inode(inode
) && S_ISREG(inode
->i_mode
)) {
1103 /* wait for GCed encrypted page writeback */
1104 f2fs_wait_on_encrypted_page_writeback(F2FS_I_SB(inode
),
1107 fio
->encrypted_page
= f2fs_encrypt(inode
, fio
->page
);
1108 if (IS_ERR(fio
->encrypted_page
)) {
1109 err
= PTR_ERR(fio
->encrypted_page
);
1114 set_page_writeback(page
);
1117 * If current allocation needs SSR,
1118 * it had better in-place writes for updated data.
1120 if (unlikely(fio
->blk_addr
!= NEW_ADDR
&&
1121 !is_cold_data(page
) &&
1122 !IS_ATOMIC_WRITTEN_PAGE(page
) &&
1123 need_inplace_update(inode
))) {
1124 rewrite_data_page(fio
);
1125 set_inode_flag(F2FS_I(inode
), FI_UPDATE_WRITE
);
1126 trace_f2fs_do_write_data_page(page
, IPU
);
1128 write_data_page(&dn
, fio
);
1129 set_data_blkaddr(&dn
);
1130 f2fs_update_extent_cache(&dn
);
1131 trace_f2fs_do_write_data_page(page
, OPU
);
1132 set_inode_flag(F2FS_I(inode
), FI_APPEND_WRITE
);
1133 if (page
->index
== 0)
1134 set_inode_flag(F2FS_I(inode
), FI_FIRST_BLOCK_WRITTEN
);
1137 f2fs_put_dnode(&dn
);
1141 static int f2fs_write_data_page(struct page
*page
,
1142 struct writeback_control
*wbc
)
1144 struct inode
*inode
= page
->mapping
->host
;
1145 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1146 loff_t i_size
= i_size_read(inode
);
1147 const pgoff_t end_index
= ((unsigned long long) i_size
)
1148 >> PAGE_CACHE_SHIFT
;
1149 unsigned offset
= 0;
1150 bool need_balance_fs
= false;
1152 struct f2fs_io_info fio
= {
1155 .rw
= (wbc
->sync_mode
== WB_SYNC_ALL
) ? WRITE_SYNC
: WRITE
,
1157 .encrypted_page
= NULL
,
1160 trace_f2fs_writepage(page
, DATA
);
1162 if (page
->index
< end_index
)
1166 * If the offset is out-of-range of file size,
1167 * this page does not have to be written to disk.
1169 offset
= i_size
& (PAGE_CACHE_SIZE
- 1);
1170 if ((page
->index
>= end_index
+ 1) || !offset
)
1173 zero_user_segment(page
, offset
, PAGE_CACHE_SIZE
);
1175 if (unlikely(is_sbi_flag_set(sbi
, SBI_POR_DOING
)))
1177 if (f2fs_is_drop_cache(inode
))
1179 if (f2fs_is_volatile_file(inode
) && !wbc
->for_reclaim
&&
1180 available_free_memory(sbi
, BASE_CHECK
))
1183 /* Dentry blocks are controlled by checkpoint */
1184 if (S_ISDIR(inode
->i_mode
)) {
1185 if (unlikely(f2fs_cp_error(sbi
)))
1187 err
= do_write_data_page(&fio
);
1191 /* we should bypass data pages to proceed the kworkder jobs */
1192 if (unlikely(f2fs_cp_error(sbi
))) {
1197 if (!wbc
->for_reclaim
)
1198 need_balance_fs
= true;
1199 else if (has_not_enough_free_secs(sbi
, 0))
1204 if (f2fs_has_inline_data(inode
))
1205 err
= f2fs_write_inline_data(inode
, page
);
1207 err
= do_write_data_page(&fio
);
1208 f2fs_unlock_op(sbi
);
1210 if (err
&& err
!= -ENOENT
)
1213 clear_cold_data(page
);
1215 inode_dec_dirty_pages(inode
);
1217 ClearPageUptodate(page
);
1219 f2fs_balance_fs(sbi
, need_balance_fs
);
1220 if (wbc
->for_reclaim
|| unlikely(f2fs_cp_error(sbi
))) {
1221 f2fs_submit_merged_bio(sbi
, DATA
, WRITE
);
1222 remove_dirty_inode(inode
);
1227 redirty_page_for_writepage(wbc
, page
);
1228 return AOP_WRITEPAGE_ACTIVATE
;
1231 static int __f2fs_writepage(struct page
*page
, struct writeback_control
*wbc
,
1234 struct address_space
*mapping
= data
;
1235 int ret
= mapping
->a_ops
->writepage(page
, wbc
);
1236 mapping_set_error(mapping
, ret
);
1241 * This function was copied from write_cche_pages from mm/page-writeback.c.
1242 * The major change is making write step of cold data page separately from
1243 * warm/hot data page.
1245 static int f2fs_write_cache_pages(struct address_space
*mapping
,
1246 struct writeback_control
*wbc
, writepage_t writepage
,
1251 struct pagevec pvec
;
1253 pgoff_t
uninitialized_var(writeback_index
);
1255 pgoff_t end
; /* Inclusive */
1258 int range_whole
= 0;
1262 pagevec_init(&pvec
, 0);
1264 if (wbc
->range_cyclic
) {
1265 writeback_index
= mapping
->writeback_index
; /* prev offset */
1266 index
= writeback_index
;
1273 index
= wbc
->range_start
>> PAGE_CACHE_SHIFT
;
1274 end
= wbc
->range_end
>> PAGE_CACHE_SHIFT
;
1275 if (wbc
->range_start
== 0 && wbc
->range_end
== LLONG_MAX
)
1277 cycled
= 1; /* ignore range_cyclic tests */
1279 if (wbc
->sync_mode
== WB_SYNC_ALL
|| wbc
->tagged_writepages
)
1280 tag
= PAGECACHE_TAG_TOWRITE
;
1282 tag
= PAGECACHE_TAG_DIRTY
;
1284 if (wbc
->sync_mode
== WB_SYNC_ALL
|| wbc
->tagged_writepages
)
1285 tag_pages_for_writeback(mapping
, index
, end
);
1287 while (!done
&& (index
<= end
)) {
1290 nr_pages
= pagevec_lookup_tag(&pvec
, mapping
, &index
, tag
,
1291 min(end
- index
, (pgoff_t
)PAGEVEC_SIZE
- 1) + 1);
1295 for (i
= 0; i
< nr_pages
; i
++) {
1296 struct page
*page
= pvec
.pages
[i
];
1298 if (page
->index
> end
) {
1303 done_index
= page
->index
;
1307 if (unlikely(page
->mapping
!= mapping
)) {
1313 if (!PageDirty(page
)) {
1314 /* someone wrote it for us */
1315 goto continue_unlock
;
1318 if (step
== is_cold_data(page
))
1319 goto continue_unlock
;
1321 if (PageWriteback(page
)) {
1322 if (wbc
->sync_mode
!= WB_SYNC_NONE
)
1323 f2fs_wait_on_page_writeback(page
, DATA
);
1325 goto continue_unlock
;
1328 BUG_ON(PageWriteback(page
));
1329 if (!clear_page_dirty_for_io(page
))
1330 goto continue_unlock
;
1332 ret
= (*writepage
)(page
, wbc
, data
);
1333 if (unlikely(ret
)) {
1334 if (ret
== AOP_WRITEPAGE_ACTIVATE
) {
1338 done_index
= page
->index
+ 1;
1344 if (--wbc
->nr_to_write
<= 0 &&
1345 wbc
->sync_mode
== WB_SYNC_NONE
) {
1350 pagevec_release(&pvec
);
1359 if (!cycled
&& !done
) {
1362 end
= writeback_index
- 1;
1365 if (wbc
->range_cyclic
|| (range_whole
&& wbc
->nr_to_write
> 0))
1366 mapping
->writeback_index
= done_index
;
1371 static int f2fs_write_data_pages(struct address_space
*mapping
,
1372 struct writeback_control
*wbc
)
1374 struct inode
*inode
= mapping
->host
;
1375 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1376 bool locked
= false;
1380 trace_f2fs_writepages(mapping
->host
, wbc
, DATA
);
1382 /* deal with chardevs and other special file */
1383 if (!mapping
->a_ops
->writepage
)
1386 /* skip writing if there is no dirty page in this inode */
1387 if (!get_dirty_pages(inode
) && wbc
->sync_mode
== WB_SYNC_NONE
)
1390 if (S_ISDIR(inode
->i_mode
) && wbc
->sync_mode
== WB_SYNC_NONE
&&
1391 get_dirty_pages(inode
) < nr_pages_to_skip(sbi
, DATA
) &&
1392 available_free_memory(sbi
, DIRTY_DENTS
))
1395 /* skip writing during file defragment */
1396 if (is_inode_flag_set(F2FS_I(inode
), FI_DO_DEFRAG
))
1399 /* during POR, we don't need to trigger writepage at all. */
1400 if (unlikely(is_sbi_flag_set(sbi
, SBI_POR_DOING
)))
1403 diff
= nr_pages_to_write(sbi
, DATA
, wbc
);
1405 if (!S_ISDIR(inode
->i_mode
) && wbc
->sync_mode
== WB_SYNC_ALL
) {
1406 mutex_lock(&sbi
->writepages
);
1409 ret
= f2fs_write_cache_pages(mapping
, wbc
, __f2fs_writepage
, mapping
);
1410 f2fs_submit_merged_bio(sbi
, DATA
, WRITE
);
1412 mutex_unlock(&sbi
->writepages
);
1414 remove_dirty_inode(inode
);
1416 wbc
->nr_to_write
= max((long)0, wbc
->nr_to_write
- diff
);
1420 wbc
->pages_skipped
+= get_dirty_pages(inode
);
1424 static void f2fs_write_failed(struct address_space
*mapping
, loff_t to
)
1426 struct inode
*inode
= mapping
->host
;
1427 loff_t i_size
= i_size_read(inode
);
1430 truncate_pagecache(inode
, i_size
);
1431 truncate_blocks(inode
, i_size
, true);
1435 static int prepare_write_begin(struct f2fs_sb_info
*sbi
,
1436 struct page
*page
, loff_t pos
, unsigned len
,
1437 block_t
*blk_addr
, bool *node_changed
)
1439 struct inode
*inode
= page
->mapping
->host
;
1440 pgoff_t index
= page
->index
;
1441 struct dnode_of_data dn
;
1443 bool locked
= false;
1444 struct extent_info ei
;
1447 if (f2fs_has_inline_data(inode
) ||
1448 (pos
& PAGE_CACHE_MASK
) >= i_size_read(inode
)) {
1453 /* check inline_data */
1454 ipage
= get_node_page(sbi
, inode
->i_ino
);
1455 if (IS_ERR(ipage
)) {
1456 err
= PTR_ERR(ipage
);
1460 set_new_dnode(&dn
, inode
, ipage
, ipage
, 0);
1462 if (f2fs_has_inline_data(inode
)) {
1463 if (pos
+ len
<= MAX_INLINE_DATA
) {
1464 read_inline_data(page
, ipage
);
1465 set_inode_flag(F2FS_I(inode
), FI_DATA_EXIST
);
1466 set_inline_node(ipage
);
1467 sync_inode_page(&dn
);
1469 err
= f2fs_convert_inline_page(&dn
, page
);
1472 if (dn
.data_blkaddr
== NULL_ADDR
)
1473 err
= f2fs_get_block(&dn
, index
);
1475 } else if (locked
) {
1476 err
= f2fs_get_block(&dn
, index
);
1478 if (f2fs_lookup_extent_cache(inode
, index
, &ei
)) {
1479 dn
.data_blkaddr
= ei
.blk
+ index
- ei
.fofs
;
1482 err
= get_dnode_of_data(&dn
, index
, LOOKUP_NODE
);
1483 if (err
|| (!err
&& dn
.data_blkaddr
== NULL_ADDR
)) {
1484 f2fs_put_dnode(&dn
);
1492 /* convert_inline_page can make node_changed */
1493 *blk_addr
= dn
.data_blkaddr
;
1494 *node_changed
= dn
.node_changed
;
1496 f2fs_put_dnode(&dn
);
1499 f2fs_unlock_op(sbi
);
1503 static int f2fs_write_begin(struct file
*file
, struct address_space
*mapping
,
1504 loff_t pos
, unsigned len
, unsigned flags
,
1505 struct page
**pagep
, void **fsdata
)
1507 struct inode
*inode
= mapping
->host
;
1508 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1509 struct page
*page
= NULL
;
1510 pgoff_t index
= ((unsigned long long) pos
) >> PAGE_CACHE_SHIFT
;
1511 bool need_balance
= false;
1512 block_t blkaddr
= NULL_ADDR
;
1515 trace_f2fs_write_begin(inode
, pos
, len
, flags
);
1518 * We should check this at this moment to avoid deadlock on inode page
1519 * and #0 page. The locking rule for inline_data conversion should be:
1520 * lock_page(page #0) -> lock_page(inode_page)
1523 err
= f2fs_convert_inline_inode(inode
);
1528 page
= grab_cache_page_write_begin(mapping
, index
, flags
);
1536 err
= prepare_write_begin(sbi
, page
, pos
, len
,
1537 &blkaddr
, &need_balance
);
1541 if (need_balance
&& has_not_enough_free_secs(sbi
, 0)) {
1543 f2fs_balance_fs(sbi
, true);
1545 if (page
->mapping
!= mapping
) {
1546 /* The page got truncated from under us */
1547 f2fs_put_page(page
, 1);
1552 f2fs_wait_on_page_writeback(page
, DATA
);
1554 /* wait for GCed encrypted page writeback */
1555 if (f2fs_encrypted_inode(inode
) && S_ISREG(inode
->i_mode
))
1556 f2fs_wait_on_encrypted_page_writeback(sbi
, blkaddr
);
1558 if (len
== PAGE_CACHE_SIZE
)
1560 if (PageUptodate(page
))
1563 if ((pos
& PAGE_CACHE_MASK
) >= i_size_read(inode
)) {
1564 unsigned start
= pos
& (PAGE_CACHE_SIZE
- 1);
1565 unsigned end
= start
+ len
;
1567 /* Reading beyond i_size is simple: memset to zero */
1568 zero_user_segments(page
, 0, start
, end
, PAGE_CACHE_SIZE
);
1572 if (blkaddr
== NEW_ADDR
) {
1573 zero_user_segment(page
, 0, PAGE_CACHE_SIZE
);
1575 struct f2fs_io_info fio
= {
1579 .blk_addr
= blkaddr
,
1581 .encrypted_page
= NULL
,
1583 err
= f2fs_submit_page_bio(&fio
);
1588 if (unlikely(!PageUptodate(page
))) {
1592 if (unlikely(page
->mapping
!= mapping
)) {
1593 f2fs_put_page(page
, 1);
1597 /* avoid symlink page */
1598 if (f2fs_encrypted_inode(inode
) && S_ISREG(inode
->i_mode
)) {
1599 err
= f2fs_decrypt_one(inode
, page
);
1605 SetPageUptodate(page
);
1607 clear_cold_data(page
);
1611 f2fs_put_page(page
, 1);
1612 f2fs_write_failed(mapping
, pos
+ len
);
1616 static int f2fs_write_end(struct file
*file
,
1617 struct address_space
*mapping
,
1618 loff_t pos
, unsigned len
, unsigned copied
,
1619 struct page
*page
, void *fsdata
)
1621 struct inode
*inode
= page
->mapping
->host
;
1623 trace_f2fs_write_end(inode
, pos
, len
, copied
);
1625 set_page_dirty(page
);
1627 if (pos
+ copied
> i_size_read(inode
)) {
1628 i_size_write(inode
, pos
+ copied
);
1629 mark_inode_dirty(inode
);
1630 update_inode_page(inode
);
1633 f2fs_put_page(page
, 1);
1634 f2fs_update_time(F2FS_I_SB(inode
), REQ_TIME
);
1638 static int check_direct_IO(struct inode
*inode
, struct iov_iter
*iter
,
1641 unsigned blocksize_mask
= inode
->i_sb
->s_blocksize
- 1;
1643 if (offset
& blocksize_mask
)
1646 if (iov_iter_alignment(iter
) & blocksize_mask
)
1652 static ssize_t
f2fs_direct_IO(struct kiocb
*iocb
, struct iov_iter
*iter
,
1655 struct file
*file
= iocb
->ki_filp
;
1656 struct address_space
*mapping
= file
->f_mapping
;
1657 struct inode
*inode
= mapping
->host
;
1658 size_t count
= iov_iter_count(iter
);
1661 /* we don't need to use inline_data strictly */
1662 err
= f2fs_convert_inline_inode(inode
);
1666 if (f2fs_encrypted_inode(inode
) && S_ISREG(inode
->i_mode
))
1669 err
= check_direct_IO(inode
, iter
, offset
);
1673 trace_f2fs_direct_IO_enter(inode
, offset
, count
, iov_iter_rw(iter
));
1675 if (iov_iter_rw(iter
) == WRITE
) {
1676 err
= __allocate_data_blocks(inode
, offset
, count
);
1681 err
= blockdev_direct_IO(iocb
, inode
, iter
, offset
, get_data_block_dio
);
1683 if (err
< 0 && iov_iter_rw(iter
) == WRITE
)
1684 f2fs_write_failed(mapping
, offset
+ count
);
1686 trace_f2fs_direct_IO_exit(inode
, offset
, count
, iov_iter_rw(iter
), err
);
1691 void f2fs_invalidate_page(struct page
*page
, unsigned int offset
,
1692 unsigned int length
)
1694 struct inode
*inode
= page
->mapping
->host
;
1695 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
1697 if (inode
->i_ino
>= F2FS_ROOT_INO(sbi
) &&
1698 (offset
% PAGE_CACHE_SIZE
|| length
!= PAGE_CACHE_SIZE
))
1701 if (PageDirty(page
)) {
1702 if (inode
->i_ino
== F2FS_META_INO(sbi
))
1703 dec_page_count(sbi
, F2FS_DIRTY_META
);
1704 else if (inode
->i_ino
== F2FS_NODE_INO(sbi
))
1705 dec_page_count(sbi
, F2FS_DIRTY_NODES
);
1707 inode_dec_dirty_pages(inode
);
1710 /* This is atomic written page, keep Private */
1711 if (IS_ATOMIC_WRITTEN_PAGE(page
))
1714 ClearPagePrivate(page
);
1717 int f2fs_release_page(struct page
*page
, gfp_t wait
)
1719 /* If this is dirty page, keep PagePrivate */
1720 if (PageDirty(page
))
1723 /* This is atomic written page, keep Private */
1724 if (IS_ATOMIC_WRITTEN_PAGE(page
))
1727 ClearPagePrivate(page
);
1731 static int f2fs_set_data_page_dirty(struct page
*page
)
1733 struct address_space
*mapping
= page
->mapping
;
1734 struct inode
*inode
= mapping
->host
;
1736 trace_f2fs_set_page_dirty(page
, DATA
);
1738 SetPageUptodate(page
);
1740 if (f2fs_is_atomic_file(inode
)) {
1741 if (!IS_ATOMIC_WRITTEN_PAGE(page
)) {
1742 register_inmem_page(inode
, page
);
1746 * Previously, this page has been registered, we just
1752 if (!PageDirty(page
)) {
1753 __set_page_dirty_nobuffers(page
);
1754 update_dirty_page(inode
, page
);
1760 static sector_t
f2fs_bmap(struct address_space
*mapping
, sector_t block
)
1762 struct inode
*inode
= mapping
->host
;
1764 if (f2fs_has_inline_data(inode
))
1767 /* make sure allocating whole blocks */
1768 if (mapping_tagged(mapping
, PAGECACHE_TAG_DIRTY
))
1769 filemap_write_and_wait(mapping
);
1771 return generic_block_bmap(mapping
, block
, get_data_block_bmap
);
1774 const struct address_space_operations f2fs_dblock_aops
= {
1775 .readpage
= f2fs_read_data_page
,
1776 .readpages
= f2fs_read_data_pages
,
1777 .writepage
= f2fs_write_data_page
,
1778 .writepages
= f2fs_write_data_pages
,
1779 .write_begin
= f2fs_write_begin
,
1780 .write_end
= f2fs_write_end
,
1781 .set_page_dirty
= f2fs_set_data_page_dirty
,
1782 .invalidatepage
= f2fs_invalidate_page
,
1783 .releasepage
= f2fs_release_page
,
1784 .direct_IO
= f2fs_direct_IO
,