1 files changed, 20 insertions, 16 deletions

diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index a65a87726d6..b36cce034ea 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -1507,10 +1507,11 @@ way_up_top:
 
                 /* take care of the easy cases up front */
                 spin_lock(&res->spinlock);
-                if (res->state & DLM_LOCK_RES_RECOVERING) {
+                if (res->state & (DLM_LOCK_RES_RECOVERING|
+                                  DLM_LOCK_RES_MIGRATING)) {
                         spin_unlock(&res->spinlock);
                         mlog(0, "returning DLM_MASTER_RESP_ERROR since res is "
-                             "being recovered\n");
+                             "being recovered/migrated\n");
                         response = DLM_MASTER_RESP_ERROR;
                         if (mle)
                                 kmem_cache_free(dlm_mle_cache, mle);
@@ -2493,6 +2494,9 @@ fail:
          * the lockres
          */
 
+        /* now that remote nodes are spinning on the MIGRATING flag,
+         * ensure that all assert_master work is flushed. */
+        flush_workqueue(dlm->dlm_worker);
 
         /* get an extra reference on the mle.
          * otherwise the assert_master from the new
@@ -2547,7 +2551,8 @@ fail:
                             res->owner == target)
                                 break;
 
-                        mlog(0, "timed out during migration\n");
+                        mlog(0, "%s:%.*s: timed out during migration\n",
+                             dlm->name, res->lockname.len, res->lockname.name);
                         /* avoid hang during shutdown when migrating lockres 
                          * to a node which also goes down */
                         if (dlm_is_node_dead(dlm, target)) {
@@ -2555,20 +2560,19 @@ fail:
                                      "target %u is no longer up, restarting\n",
                                      dlm->name, res->lockname.len,
                                      res->lockname.name, target);
-                                ret = -ERESTARTSYS;
+                                ret = -EINVAL;
+                                /* migration failed, detach and clean up mle */
+                                dlm_mle_detach_hb_events(dlm, mle);
+                                dlm_put_mle(mle);
+                                dlm_put_mle_inuse(mle);
+                                spin_lock(&res->spinlock);
+                                res->state &= ~DLM_LOCK_RES_MIGRATING;
+                                spin_unlock(&res->spinlock);
+                                goto leave;
                         }
-                }
-                if (ret == -ERESTARTSYS) {
-                        /* migration failed, detach and clean up mle */
-                        dlm_mle_detach_hb_events(dlm, mle);
-                        dlm_put_mle(mle);
-                        dlm_put_mle_inuse(mle);
-                        spin_lock(&res->spinlock);
-                        res->state &= ~DLM_LOCK_RES_MIGRATING;
-                        spin_unlock(&res->spinlock);
-                        goto leave;
-                }
-                /* TODO: if node died: stop, clean up, return error */
+                } else
+                        mlog(0, "%s:%.*s: caught signal during migration\n",
+                             dlm->name, res->lockname.len, res->lockname.name);
         }
 
         /* all done, set the owner, clear the flag */