GFS2: Fix error path ref counting for root inode

We were keeping hold of an extra ref to the root inode in one
of the error paths, that resulted in a hang.

Reported-by: Nate Straz <nstraz@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Tested-by: Robert Peterson <rpeterso@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 95bb33e41a76..e502b379a4da 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1258,6 +1258,8 @@ fail_sb:
                 dput(sdp->sd_root_dir);
         if (sdp->sd_master_dir)
                 dput(sdp->sd_master_dir);
+        if (sb->s_root)
+                dput(sb->s_root);
         sb->s_root = NULL;
 fail_locking:
         init_locking(sdp, &mount_gh, UNDO);