handle aof_flush_postponed_start as well

src/aof.c

@@ -1109,9 +1109,9 @@ void flushAppendOnlyFile(int force) {
             if (server.aof_flush_postponed_start == 0) {
                 /* No previous write postponing, remember that we are
                  * postponing the flush and return. */
-                server.aof_flush_postponed_start = server.unixtime;
+                server.aof_flush_postponed_start = server.mstime;
                 return;
-            } else if (server.unixtime - server.aof_flush_postponed_start < 2) {
+            } else if (server.mstime - server.aof_flush_postponed_start < 2000) {
                 /* We were already waiting for fsync to finish, but for less
                  * than two seconds this is still ok. Postpone again. */
                 return;

src/server.h

@@ -1778,7 +1778,7 @@ struct redisServer {
     sds aof_buf;      /* AOF buffer, written before entering the event loop */
     int aof_fd;       /* File descriptor of currently selected AOF file */
     int aof_selected_db; /* Currently selected DB in AOF */
-    time_t aof_flush_postponed_start; /* UNIX time of postponed AOF flush */
+    time_t aof_flush_postponed_start; /* mstime of postponed AOF flush */
     time_t aof_last_fsync;            /* mstime of last fsync() */
     time_t aof_rewrite_time_last;   /* Time used by last AOF rewrite run. */
     time_t aof_rewrite_time_start;  /* Current AOF rewrite start time. */