From: xinxin shu <shuxinxin@chinac.com>
Date: Tue, 7 Jun 2016 04:07:55 +0000 (+0800)
Subject: librbd: object_may_exist always return true when you write an empty object
X-Git-Tag: v10.2.3~48^2~19
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=5bf4398e373ecc26958d8480171f4322341a9d82;p=ceph.git

librbd: object_may_exist always return true when you write an empty object

if you write an empty object, object map is updated firstly

Signed-off-by: xinxin shu <shuxinxin@chinac.com>
(cherry picked from commit a54073808146d205d54d6a932a6e0fd750f1dc38)
---

diff --git a/src/librbd/AioObjectRequest.cc b/src/librbd/AioObjectRequest.cc
index af34e8237ee93..f550b0b49785e 100644
--- a/src/librbd/AioObjectRequest.cc
+++ b/src/librbd/AioObjectRequest.cc
@@ -536,7 +536,7 @@ namespace librbd {
     RWLock::RLocker snap_locker(m_ictx->snap_lock);
     if (m_ictx->enable_alloc_hint &&
         (m_ictx->object_map == nullptr ||
-         !m_ictx->object_map->object_may_exist(m_object_no))) {
+         !m_object_exist)) {
       wr->set_alloc_hint(m_ictx->get_object_size(), m_ictx->get_object_size());
     }