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/evict.c b/src/evict.c
index 2f94f5942..227e15a8d 100644
--- a/src/evict.c
+++ b/src/evict.c
@@ -342,7 +342,7 @@ size_t freeMemoryGetNotCountedMemory(void) {
         }
     }
     if (server.aof_state != AOF_OFF) {
-        overhead += sdsAllocSize(server.aof_buf)+aofRewriteBufferSize();
+        overhead += sdsAllocSize(server.aof_buf)+aofRewriteBufferMemoryUsage();
     }
     return overhead;
 }