ocfs2: add a small delay after a failed migration

Otherwise we risk starving other threads.

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

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c
index 44d3b57ae8a8..22bb58a514df 100644
--- a/fs/ocfs2/dlm/dlmthread.c
+++ b/fs/ocfs2/dlm/dlmthread.c
@@ -39,6 +39,7 @@
 #include <linux/inet.h>
 #include <linux/timer.h>
 #include <linux/kthread.h>
+#include <linux/delay.h>
 
 
 #include "cluster/heartbeat.h"
@@ -165,6 +166,7 @@ again:
         } else if (ret < 0) {
                 mlog(ML_NOTICE, "lockres %.*s: migrate failed, retrying\n",
                      lockres->lockname.len, lockres->lockname.name);
+                msleep(100);
                 goto again;
         }
 
@@ -640,8 +642,9 @@ static int dlm_thread(void *data)
                          * spinlock and do NOT have the dlm lock.
                          * safe to reserve/queue asts and run the lists. */
 
-                        mlog(0, "calling dlm_shuffle_lists with dlm=%p, "
-                             "res=%p\n", dlm, res);
+                        mlog(0, "calling dlm_shuffle_lists with dlm=%s, "
+                             "res=%.*s\n", dlm->name,
+                             res->lockname.len, res->lockname.name);
 
                         /* called while holding lockres lock */
                         dlm_shuffle_lists(dlm, res);