ocfs2_dlm: Make dlmunlock() wait for migration to complete

dlmunlock() was not waiting for migration to complete before releasing locks
on locally mastered locks.

Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ocfs2/dlm/dlmunlock.c b/fs/ocfs2/dlm/dlmunlock.c
index 37be4b2e0d4a..3c8a250fcfec 100644
--- a/fs/ocfs2/dlm/dlmunlock.c
+++ b/fs/ocfs2/dlm/dlmunlock.c
@@ -147,6 +147,10 @@ static enum dlm_status dlmunlock_common(struct dlm_ctxt *dlm,
                 goto leave;
         }
 
+        if (res->state & DLM_LOCK_RES_MIGRATING) {
+                status = DLM_MIGRATING;
+                goto leave;
+        }
 
         /* see above for what the spec says about
          * LKM_CANCEL and the lock queue state */