From: Yan, Zheng <zyan@redhat.com>
Date: Tue, 10 Mar 2015 03:11:15 +0000 (+0800)
Subject: mds: pin inode when openning snap parent
X-Git-Tag: v9.0.0~150^2~9
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=b815cf61c1d53bd0cd93186ec62842c8b122f279;p=ceph.git

mds: pin inode when openning snap parent

make sure SnapRealm not get freed before C_SR_RetryOpenParents
get executed.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
---

diff --git a/src/mds/SnapRealm.cc b/src/mds/SnapRealm.cc
index 627892421e2..080d44c7b5c 100644
--- a/src/mds/SnapRealm.cc
+++ b/src/mds/SnapRealm.cc
@@ -71,13 +71,16 @@ struct C_SR_RetryOpenParents : public MDSInternalContextBase {
   MDSInternalContextBase* fin;
   C_SR_RetryOpenParents(SnapRealm *s, snapid_t f, snapid_t l, snapid_t pl,
 			inodeno_t p, MDSInternalContextBase *c) :
-    sr(s), first(f), last(l), parent_last(pl),  parent(p), fin(c) {}
+    sr(s), first(f), last(l), parent_last(pl),  parent(p), fin(c) {
+    sr->inode->get(CInode::PIN_OPENINGSNAPPARENTS);
+  }
   MDS *get_mds() { return sr->mdcache->mds; }
   void finish(int r) {
     if (r < 0)
       sr->_remove_missing_parent(parent_last, parent, r);
     if (sr->_open_parents(fin, first, last))
       fin->complete(0);
+    sr->inode->put(CInode::PIN_OPENINGSNAPPARENTS);
   }
 };