btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-07-19 11:17:49 +04:00
parent 765927b2d5
commit 11e62a8fab

View File

@@ -3268,7 +3268,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
if (fs_info->sb->s_flags & MS_RDONLY) if (fs_info->sb->s_flags & MS_RDONLY)
return -EROFS; return -EROFS;
ret = mnt_want_write(file->f_path.mnt); ret = mnt_want_write_file(file);
if (ret) if (ret)
return ret; return ret;
@@ -3338,7 +3338,7 @@ out_bargs:
out: out:
mutex_unlock(&fs_info->balance_mutex); mutex_unlock(&fs_info->balance_mutex);
mutex_unlock(&fs_info->volume_mutex); mutex_unlock(&fs_info->volume_mutex);
mnt_drop_write(file->f_path.mnt); mnt_drop_write_file(file);
return ret; return ret;
} }