[PATCH 3/4] Btrfs: use mnt_want_write_file instead of mnt_want_write
From: Liu Bo <hidden>
Date: 2012-06-21 11:39:57
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
mnt_want_write_file is faster when file has been opened for write. Signed-off-by: Liu Bo <redacted> --- 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 069cd85..df4c04d 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c@@ -3261,7 +3261,7 @@ 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;
@@ -3331,7 +3331,7 @@ 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; }
--
1.6.5.2