From: Somnath Roy <somnath.roy@sandisk.com>
Date: Thu, 31 Jul 2014 22:03:53 +0000 (-0700)
Subject: FileStore: Introduced a RLock instead of WLock
X-Git-Tag: v0.85~37^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=b24db81ea060b563ff9c2249b054064a27ec42e2;p=ceph.git

FileStore: Introduced a RLock instead of WLock

While calling index->collection_version, there is no need to
hold WLock at the index level. RLock should be sufficient.

Signed-off-by: Somnath Roy <somnath.roy@sandisk.com>
---

diff --git a/src/os/FileStore.cc b/src/os/FileStore.cc
index feb317162ca6..4481c93f56b6 100644
--- a/src/os/FileStore.cc
+++ b/src/os/FileStore.cc
@@ -4248,7 +4248,7 @@ int FileStore::collection_version_current(coll_t c, uint32_t *version)
     return r;
 
   assert(NULL != index.index);
-  RWLock::WLocker l((index.index)->access_lock);
+  RWLock::RLocker l((index.index)->access_lock);
 
   *version = index->collection_version();
   if (*version == target_version)