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| author | Liu Bo <liubo2009@cn.fujitsu.com> | 2012-06-29 11:58:48 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2012-07-23 22:27:57 +0200 |
| commit | e54bfa31044d602a57d4e190f6d1c3763ea76bfe (patch) | |
| tree | 5274bf7cf782bbcaeab1505c51f4eb5d58a20448 /fs/btrfs/ioctl.c | |
| parent | Btrfs: remove redundant r/o check for superblock (diff) | |
| download | linux-e54bfa31044d602a57d4e190f6d1c3763ea76bfe.tar.xz linux-e54bfa31044d602a57d4e190f6d1c3763ea76bfe.zip | |
Btrfs: use mnt_want_write_file instead of mnt_want_write
mnt_want_write_file is faster when file has been opened for write.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/btrfs/ioctl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index b8034dc62e38..13ed1c9534cc 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -3265,7 +3265,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg) if (!capable(CAP_SYS_ADMIN)) return -EPERM; - ret = mnt_want_write(file->f_path.mnt); + ret = mnt_want_write_file(file); if (ret) return ret; @@ -3335,7 +3335,7 @@ out_bargs: out: mutex_unlock(&fs_info->balance_mutex); mutex_unlock(&fs_info->volume_mutex); - mnt_drop_write(file->f_path.mnt); + mnt_drop_write_file(file); return ret; } |