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f2fs: test before set/clear bits 

If the bit is already set, we don't need to reset it, and vice versa.
Because we don't need to make the caches dirty for that.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
hifive-unleashed-5.1
Jaegeuk Kim 2014-07-25 15:47:23 -07:00
parent 01229f5e1b
commit 61e0f2d0a5
1 changed files with 4 additions and 2 deletions
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6
fs/f2fs/f2fs.h
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@ -1003,7 +1003,8 @@ enum {
static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
{
set_bit(flag, &fi->flags);
if (!test_bit(flag, &fi->flags))
set_bit(flag, &fi->flags);
}
static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
@ -1013,7 +1014,8 @@ static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag)
static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag)
{
clear_bit(flag, &fi->flags);
if (test_bit(flag, &fi->flags))
clear_bit(flag, &fi->flags);
}
static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode)