Make full use of aofrwblock's buf (#8975)

Make aof rewrite buffer memory size more accurate, before, there may be 20%
deviation with its real memory usage.

The implication are both lower memory usage, and also a more accurate INFO.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/object.c b/src/object.c
index c7b25ffd4..8e8ba7785 100644
--- a/src/object.c
+++ b/src/object.c
@@ -1011,7 +1011,7 @@ struct redisMemOverhead *getMemoryOverheadData(void) {
     mem = 0;
     if (server.aof_state != AOF_OFF) {
         mem += sdsZmallocSize(server.aof_buf);
-        mem += aofRewriteBufferSize();
+        mem += aofRewriteBufferMemoryUsage();
     }
     mh->aof_buffer = mem;
     mem_total+=mem;