--- ceph-12.2.9/src/osd/PrimaryLogPG.cc.orig	2018-10-29 09:12:57.766116270 -0400
+++ ceph-12.2.9/src/osd/PrimaryLogPG.cc	2018-10-29 09:32:37.146116270 -0400
@@ -20,6 +20,7 @@
 #include "PG.h"
 #include "PrimaryLogPG.h"
 #include "OSD.h"
+#include <algorithm>
 #include "OpRequest.h"
 #include "ScrubStore.h"
 #include "Session.h"
@@ -1586,7 +1587,7 @@
       pg_log.get_log().approx_size() > target) {
     dout(10) << __func__ << " approx pg log length =  "
              << pg_log.get_log().approx_size() << dendl;
-    size_t num_to_trim = std::min(pg_log.get_log().approx_size() - target,
+    size_t num_to_trim = std::min<uint64_t>(pg_log.get_log().approx_size() - target,
 				  cct->_conf->osd_pg_log_trim_max);
     dout(10) << __func__ << " num_to_trim =  " << num_to_trim << dendl;
     if (num_to_trim < cct->_conf->osd_pg_log_trim_min &&