From: Ian Kent <ra...@themaw.net>

We missed a memory deallocation in commit 450ba0ea.

If an existing super block is found at mount and there is no
error condition then the pre-allocated tree_root and fs_info
are no not used and are not freeded.

Signed-off-by: Ian Kent <ra...@themaw.net>
Signed-off-by: Li Zefan <l...@cn.fujitsu.com>
---
 fs/btrfs/super.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 61bd79a..f50253c 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -654,6 +654,8 @@ static int btrfs_get_sb(struct file_system_type *fs_type, 
int flags,
                }
 
                btrfs_close_devices(fs_devices);
+               kfree(fs_info);
+               kfree(tree_root);
        } else {
                char b[BDEVNAME_SIZE];
 
-- 
1.6.3
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