closes[t:2692] Fix two races that helgrind reports.

Technically neither one causes any problems.

git-svn-id: file:///svn/toku/tokudb@20881 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/brt.c

@@ -2758,8 +2758,8 @@ int toku_brt_maybe_insert (BRT brt, DBT *key, DBT *val, TOKUTXN txn, BOOL oplsn_
         if (r!=0) return r;
     }
 
-    LSN treelsn = toku_brt_checkpoint_lsn(brt);
-    if (oplsn_valid && oplsn.lsn <= treelsn.lsn) {
+    LSN treelsn;
+    if (oplsn_valid && oplsn.lsn <= (treelsn = toku_brt_checkpoint_lsn(brt)).lsn) {
         r = 0;
     } else {
         BRT_MSG_S brtcmd = { type, message_xids, .u.id={key,val}};
@@ -2825,8 +2825,8 @@ int toku_brt_maybe_delete(BRT brt, DBT *key, TOKUTXN txn, BOOL oplsn_valid, LSN
         if (r!=0) return r;
     }
     
-    LSN treelsn = toku_brt_checkpoint_lsn(brt);
-    if (oplsn_valid && oplsn.lsn <= treelsn.lsn) {
+    LSN treelsn;
+    if (oplsn_valid && oplsn.lsn <= (treelsn = toku_brt_checkpoint_lsn(brt)).lsn) {
         r = 0;
     } else {
         DBT val;
@@ -5377,8 +5377,8 @@ int toku_brt_maybe_delete_both(BRT brt, DBT *key, DBT *val, TOKUTXN txn, BOOL op
         if (r!=0) return r;
     }
 
-    LSN treelsn = toku_brt_checkpoint_lsn(brt);
-    if (oplsn_valid && oplsn.lsn <= treelsn.lsn) {
+    LSN treelsn;
+    if (oplsn_valid && oplsn.lsn <= (treelsn = toku_brt_checkpoint_lsn(brt)).lsn) {
         r = 0;
     } else {
         BRT_MSG_S brtcmd = { BRT_DELETE_BOTH, message_xids, .u.id={key,val}};

newbrt/logger.c

@@ -475,19 +475,14 @@ int toku_logger_fsync (TOKULOGGER logger)
 
 int
 toku_logger_fsync_if_lsn_not_fsynced (TOKULOGGER logger, LSN lsn) {
-    int r = 0;
-    if (logger->is_panicked) r = EINVAL;
-    else if (logger->write_log_files && logger->fsynced_lsn.lsn < lsn.lsn) {
+    int r;
+    if (logger->is_panicked) return EINVAL;
     r = ml_lock(&logger->input_lock);        assert(r==0);
     logger->input_lock_ctr++;
     r = toku_logger_maybe_fsync(logger, lsn, TRUE);
     if (r!=0) {
 	toku_logger_panic(logger, r);
     }
-        else {
-            assert(logger->fsynced_lsn.lsn >= lsn.lsn);
-        }
-    }
     return r;
 }