ceph: properly put ceph_string reference after async create attempt

commit 932a9b5870d38b87ba0a9923c804b1af7d3605b9 upstream.

The reference acquired by try_prep_async_create is currently leaked.
Ensure we put it.

Cc: stable@vger.kernel.org
Fixes: 9a8d03ca2e2c ("ceph: attempt to do async create when possible")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index e873c2ba7a7ffee3001492229def85706d2931b9..31ded797d93539ee4916f02e375f1b935d765d32 100644 (file)
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -744,8 +744,10 @@ retry:
                                restore_deleg_ino(dir, req->r_deleg_ino);
                                ceph_mdsc_put_request(req);
                                try_async = false;
+                               ceph_put_string(rcu_dereference_raw(lo.pool_ns));
                                goto retry;
                        }
+                       ceph_put_string(rcu_dereference_raw(lo.pool_ns));
                        goto out_req;
                }
        }