btrfs: disable device manipulation ioctl's EXTENT_TREE_V2

[sfrench/cifs-2.6.git] / fs / btrfs / volumes.c

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 4c0f8a10e5cd36f3739bbb9195c5fdaaa2696ec8..fa7fee09e39b8677ddc98c07ed35ecb124554137 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2085,6 +2085,11 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
        u64 num_devices;
        int ret = 0;
 
+       if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2)) {
+               btrfs_err(fs_info, "device remove not supported on extent tree v2 yet");
+               return -EINVAL;
+       }
+
        /*
         * The device list in fs_devices is accessed without locks (neither
         * uuid_mutex nor device_list_mutex) as it won't change on a mounted