From: Sage Weil <sage@redhat.com>
Date: Thu, 8 Oct 2015 16:15:01 +0000 (-0400)
Subject: mon/PGMap: assert our pg counts don't go negative
X-Git-Tag: v10.0.1~26^2~22
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=2754007c4b4036c5a42aee625f4abe6d8947fe34;p=ceph.git

mon/PGMap: assert our pg counts don't go negative

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/mon/PGMap.cc b/src/mon/PGMap.cc
index 1eee600e7cf..412b00b8760 100644
--- a/src/mon/PGMap.cc
+++ b/src/mon/PGMap.cc
@@ -501,7 +501,9 @@ void PGMap::stat_pg_sub(const pg_t &pgid, const pg_stat_t &s, bool nocreating,
   pg_sum.sub(s);
 
   num_pg--;
-  if (--num_pg_by_state[s.state] == 0)
+  int end = --num_pg_by_state[s.state];
+  assert(end >= 0);
+  if (end == 0)
     num_pg_by_state.erase(s.state);
 
   if (!nocreating) {