ceph: cope with out of order (unsafe after safe) mds reply
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 114bada..40dd437 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1871,6 +1871,12 @@
mutex_unlock(&mdsc->mutex);
goto out;
}
+ if (req->r_got_safe && !head->safe) {
+ pr_warning("got unsafe after safe on %llu from mds%d\n",
+ tid, mds);
+ mutex_unlock(&mdsc->mutex);
+ goto out;
+ }
result = le32_to_cpu(head->result);