mds: fix bug in MDCache::open_ino_finish

It's wrong to erase open_ino_info_t after finishing contexts, because
MDCache::open_ino() can be called again when finishing contexts.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index 2747ca4c06973e9e7c4201ce3ca259f5d3d1909b..a7d181b02cf0a48169e915d1a2bcc30b39826738 100644 (file)
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -8293,8 +8293,10 @@ void MDCache::open_ino_finish(inodeno_t ino, open_ino_info_t& info, int ret)
 {
   dout(10) << "open_ino_finish ino " << ino << " ret " << ret << dendl;
 
-  finish_contexts(g_ceph_context, info.waiters, ret);
+  list<Context*> waiters;
+  waiters.swap(info.waiters);
   opening_inodes.erase(ino);
+  finish_contexts(g_ceph_context, waiters, ret);
 }
 
 void MDCache::do_open_ino(inodeno_t ino, open_ino_info_t& info, int err)