[PATCH] ceph: ensure we flush delayed caps when unmounting

[Jeff Layton <jlayton@kernel.org>]

I've seen some warnings when testing recently that indicate that there
are caps still delayed on the delayed list even after we've started
unmounting.

When checking delayed caps, process the whole list if we're unmounting,
and check for delayed caps after setting the stopping var and flushing
dirty caps.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/ceph/caps.c       | 3 ++-
 fs/ceph/mds_client.c | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index a5e93b185515..68b4c6dfe4db 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -4236,7 +4236,8 @@ void ceph_check_delayed_caps(struct ceph_mds_client *mdsc)
 		ci = list_first_entry(&mdsc->cap_delay_list,
 				      struct ceph_inode_info,
 				      i_cap_delay_list);
-		if ((ci->i_ceph_flags & CEPH_I_FLUSH) == 0 &&
+		if (!mdsc->stopping &&
+		    (ci->i_ceph_flags & CEPH_I_FLUSH) == 0 &&
 		    time_before(jiffies, ci->i_hold_caps_max))
 			break;
 		list_del_init(&ci->i_cap_delay_list);
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index e5af591d3bd4..916af5497829 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -4691,6 +4691,7 @@ void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc)
 
 	lock_unlock_sessions(mdsc);
 	ceph_flush_dirty_caps(mdsc);
+	ceph_check_delayed_caps(mdsc);
 	wait_requests(mdsc);
 
 	/*
-- 
2.31.1