ext4: release donor reference when EXT4_IOC_MOVE_EXT ioctl fails

When the EXT4_IOC_MOVE_EXT ioctl() fails on bigalloc file systems, we
should jump to the 'mext_out' label to release the donor file reference.

Signed-off-by: Djalal Harouni <tixxdz@opendz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 4c8174aa685c..17c53a69454d 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -258,7 +258,8 @@ group_extend_out:
                                EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
                         ext4_msg(sb, KERN_ERR,
                                  "Online defrag not supported with bigalloc");
-                        return -EOPNOTSUPP;
+                        err = -EOPNOTSUPP;
+                        goto mext_out;
                 }
 
                 err = mnt_want_write_file(filp);