Btrfs: Fix memory leak at umount

fs_info, which is allocated in open_ctree(), should be freed
in close_ctree().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index a5d2249e6da..089871e5cd5 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2513,6 +2513,8 @@ int close_ctree(struct btrfs_root *root)
         kfree(fs_info->chunk_root);
         kfree(fs_info->dev_root);
         kfree(fs_info->csum_root);
+        kfree(fs_info);
+
         return 0;
 }