From e54bfa31044d602a57d4e190f6d1c3763ea76bfe Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Fri, 29 Jun 2012 03:58:48 -0600 Subject: [PATCH] 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 --- fs/btrfs/ioctl.c | 4 ++-- 1 file 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; }