mds: set could_consume to false when no purge queue item actually executed

Fixes: http://tracker.ceph.com/issues/24073
Signed-off-by: Xuehan Xu <xuxuehan@360.cn>
(cherry picked from commit 46b4e6afa631058fe066bfd58c76d644d5c2181d)

diff --git a/src/mds/PurgeQueue.cc b/src/mds/PurgeQueue.cc
index 49e48b04cc6d12700a4ff97ab149177a8a2f5c2b..cec43ecd34704cc3972a5372712778d62b717203 100644 (file)
--- a/src/mds/PurgeQueue.cc
+++ b/src/mds/PurgeQueue.cc
@@ -350,7 +350,6 @@ bool PurgeQueue::_consume()
 
   bool could_consume = false;
   while(can_consume()) {
-    could_consume = true;
 
     if (delayed_flush) {
       // We are now going to read from the journal, so any proactive
@@ -376,6 +375,7 @@ bool PurgeQueue::_consume()
       return could_consume;
     }
 
+    could_consume = true;
     // The journaler is readable: consume an entry
     bufferlist bl;
     bool readable = journaler.try_read_entry(bl);