[Ocfs2-devel] One Patch reported, Anyone review it, thanks

[Guozhonghua]

I review the code of the kernel 3.11.10.

The difference is as below:

-- ../linux-3.11.10/fs/ocfs2/dlm/dlmdomain.c       2013-11-30 02:42:37.000000000 +0800
+++ ocfs2-ko-3.11/dlm/dlmdomain.c     2014-03-11 18:57:23.323897515 +0800
@@ -1135,6 +1135,9 @@ static int dlm_query_region_handler(stru
      int status = 0;
      int locked = 0;
+    /* Wether domain locked */
+    int domain_locked = 0;
+
      qr = (struct dlm_query_region *) msg->buf;
       mlog(0, "Node %u queries hb regions on domain %s\n", qr->qr_node,
@@ -1150,6 +1153,7 @@ static int dlm_query_region_handler(stru
      status = -EINVAL;
       spin_lock(&dlm_domain_lock);
+    domain_locked = 1;
      dlm = __dlm_lookup_domain_full(qr->qr_domain, qr->qr_namelen);
      if (!dlm) {
              mlog(ML_ERROR, "Node %d queried hb regions on domain %s "
@@ -1181,9 +1185,12 @@ static int dlm_query_region_handler(stru
bail:
      if (locked)
              spin_unlock(&dlm->spinlock);
-       spin_unlock(&dlm_domain_lock);
-       kfree(local);
+    if (domain_locked)
+        spin_unlock(&dlm_domain_lock);
+
+    if (local)
+        kfree(local);
       return status;
}
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