1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index fd5585b8d382..0a2eb32ffe43 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2892,7 +2892,8 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
         spin_unlock(&session->s_cap_lock);
 
         /* trim unused caps to reduce MDS's cache rejoin time */
-        shrink_dcache_parent(mdsc->fsc->sb->s_root);
+        if (mdsc->fsc->sb->s_root)
+                shrink_dcache_parent(mdsc->fsc->sb->s_root);
 
         ceph_con_close(&session->s_con);
         ceph_con_open(&session->s_con,