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| author |   Gang He <ghe@suse.com> | 2018-01-31 16:15:21 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 17:18:35 -0800 |
| commit | ac604d3cdb20a12d67131d20095c4c7905aeb722 (patch) | |
| tree | d5222493f47a4c9bfe810769418b1544ce044041 /fs/ocfs2/extent_map.h | |
| parent | ocfs2: add ocfs2_try_rw_lock() and ocfs2_try_inode_lock() (diff) | |
| download | linux-dev-ac604d3cdb20a12d67131d20095c4c7905aeb722.tar.xz linux-dev-ac604d3cdb20a12d67131d20095c4c7905aeb722.zip | |
ocfs2: add ocfs2_overwrite_io()
Add ocfs2_overwrite_io function, which is used to judge if overwrite
allocated blocks, otherwise, the write will bring extra block allocation
overhead.
[ghe@suse.com: v3]
Link: http://lkml.kernel.org/r/1514455665-16325-3-git-send-email-ghe@suse.com
[ghe@suse.com: v2]
Link: http://lkml.kernel.org/r/1511944612-9629-3-git-send-email-ghe@suse.com
Link: http://lkml.kernel.org/r/1511775987-841-3-git-send-email-ghe@suse.com
Signed-off-by: Gang He <ghe@suse.com>
Reviewed-by: Changwei Ge <ge.changwei@h3c.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: alex chen <alex.chen@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | fs/ocfs2/extent_map.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ocfs2/extent_map.h b/fs/ocfs2/extent_map.h index 67ea57d2fd59..1057586ec19f 100644 --- a/fs/ocfs2/extent_map.h +++ b/fs/ocfs2/extent_map.h @@ -53,6 +53,9 @@ int ocfs2_extent_map_get_blocks(struct inode *inode, u64 v_blkno, u64 *p_blkno, int ocfs2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u64 map_start, u64 map_len); +int ocfs2_overwrite_io(struct inode *inode, struct buffer_head *di_bh, + u64 map_start, u64 map_len); + int ocfs2_seek_data_hole_offset(struct file *file, loff_t *offset, int origin); int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster, |