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