btrfs: fix memory leak when there is no more seed device

When we replace all the seed device in the system there is
no point in just keeping the btrfs_fs_devices with out
any device

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 27a14f1c5a7c..94a0d186de4c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1868,6 +1868,8 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info,
                         tmp_fs_devices = tmp_fs_devices->seed;
                 }
                 fs_devices->seed = NULL;
+                __btrfs_close_devices(fs_devices);
+                free_fs_devices(fs_devices);
         }
 }