From 2f5092149281faa2df58241a85c3a0638a662452 Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zyan@redhat.com>
Date: Wed, 11 Jan 2017 17:14:53 +0800
Subject: [PATCH] mds: fix MDCache::trim() with max == 0

MDCache::shutdown_pass call MDCache::trim with max == 0. If the last
dentry is non-null, MDCache::trim does nothing

Signed-off-by: Yan, Zheng <zyan@redhat.com>
---
 src/mds/MDCache.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index 8d0d3a005bc..e9bf26df2d4 100644
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -6385,7 +6385,7 @@ bool MDCache::trim(int max, int count)
     }
     if (!dn->get_linkage()->is_null()) {
       trimming_nulls = false;
-      if (lru.lru_get_size() + unexpirable <= (unsigned)max) {
+      if (lru.lru_get_size() + unexpirable < (unsigned)max) {
 	unexpirables.push_back(dn);
 	break;
       }