ceph: queue cap release when trimming cap

So the client will later send cap release message to MDS

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 78e2f57..0d54368 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -997,9 +997,9 @@
 	return 0;
 }
 
-static void __queue_cap_release(struct ceph_mds_session *session,
-				u64 ino, u64 cap_id, u32 migrate_seq,
-				u32 issue_seq)
+void __queue_cap_release(struct ceph_mds_session *session,
+			 u64 ino, u64 cap_id, u32 migrate_seq,
+			 u32 issue_seq)
 {
 	struct ceph_msg *msg;
 	struct ceph_mds_cap_release *head;