Max lat of sync pause should be set when greater value comes, not inced to it.
Signed-off-by: haoyixing <haoyixing@kuaishou.com>
       dout(10) << __FUNC__ << ": commit took " << lat << ", interval was " << dur << dendl;
       utime_t max_pause_lat = logger->tget(l_filestore_sync_pause_max_lat);
       if (max_pause_lat < utime_t{dur - lat}) {
-        logger->tinc(l_filestore_sync_pause_max_lat, dur - lat);
+        logger->tset(l_filestore_sync_pause_max_lat, utime_t{dur - lat});
       }
 
       logger->inc(l_filestore_commitcycle);