From: Jeff Layton <jlayton@kernel.org>
Date: Tue, 25 Jan 2022 15:39:16 -0500
Subject: ceph: properly put ceph_string reference after async create attempt
Git-commit: 932a9b5870d38b87ba0a9923c804b1af7d3605b9
Patch-mainline: v5.17-rc2
References: bsc#1195341

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>
Acked-by: Luis Henriques <lhenriques@suse.com>

---
 fs/ceph/file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 5b9104b8e453..6afae97be9da 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -750,8 +750,10 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
 				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;
 		}
 	}