Btrfs: fix ioctl arg size (userland incompatible change!)

[linux-2.6-omap-h63xx.git] / fs / btrfs / super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index b4c101d9322c8f7ae7085073b5b0f805402696fe..92c9b543deffd10b86c5ace9737ed80b2f21b902 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -582,7 +582,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
 {
        struct btrfs_ioctl_vol_args *vol;
        struct btrfs_fs_devices *fs_devices;
-       int ret = 0;
+       int ret = -ENOTTY;
        int len;
 
        if (!capable(CAP_SYS_ADMIN))
@@ -594,6 +594,7 @@ static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
                goto out;
        }
        len = strnlen(vol->name, BTRFS_PATH_NAME_MAX);
+
        switch (cmd) {
        case BTRFS_IOC_SCAN_DEV:
                ret = btrfs_scan_one_device(vol->name, FMODE_READ,