From: Xiubo Li <xiubli@redhat.com>
Date: Tue, 7 Feb 2023 13:04:52 +0800
Subject: ceph: flush cap releases when the session is flushed
Git-commit: e7d84c6a1296d059389f7342d9b4b7defb518d3a
Patch-mainline: v6.2-rc8
References: bsc#1208428
MDS expects the completed cap release prior to responding to the
session flush for cache drop.
Cc: stable@vger.kernel.org
Link: http://tracker.ceph.com/issues/38009
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
fs/ceph/mds_client.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index e163f58ff3c5..27a245d959c0 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -3685,6 +3685,12 @@ static void handle_session(struct ceph_mds_session *session,
break;
case CEPH_SESSION_FLUSHMSG:
+ /* flush cap releases */
+ spin_lock(&session->s_cap_lock);
+ if (session->s_num_cap_releases)
+ ceph_flush_cap_releases(mdsc, session);
+ spin_unlock(&session->s_cap_lock);
+
send_flushmsg_ack(mdsc, session, seq);
break;