ocfs2: silence a compile warning in dlm_alloc_pagevec()

Reported by Andrew Morton.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

fs/ocfs2/dlm/dlmdomain.c

@@ -68,8 +68,8 @@ static void **dlm_alloc_pagevec(int pages)
 		if (!(vec[i] = (void *)__get_free_page(GFP_KERNEL)))
 			goto out_free;
 
-	mlog(0, "Allocated DLM hash pagevec; %d pages (%lu expected), %Zd buckets per page\n",
-	     pages, DLM_HASH_PAGES, DLM_BUCKETS_PER_PAGE);
+	mlog(0, "Allocated DLM hash pagevec; %d pages (%lu expected), %lu buckets per page\n",
+	     pages, DLM_HASH_PAGES, (unsigned long)DLM_BUCKETS_PER_PAGE);
 	return vec;
 out_free:
 	dlm_free_pagevec(vec, i);