mem: fix real_used stats for realloc

[sip-router] / mem / q_malloc.c

diff --git a/mem/q_malloc.c b/mem/q_malloc.c
index 09cb5c7..04c6dc9 100644 (file)
--- a/mem/q_malloc.c
+++ b/mem/q_malloc.c
@@ -562,8 +562,11 @@ void* qm_realloc(struct qm_block* qm, void* p, unsigned long size)
 #else
                if(split_frag(qm, f, size)!=0){
 #endif
-                       /* update used sizes: freed the spitted frag */
-                       qm->real_used-=(orig_size-f->size-FRAG_OVERHEAD);
+                       /* update used sizes: freed the splited frag */
+                       /* split frag already adds FRAG_OVERHEAD for the newly created
+                          free frag, so here we only need orig_size-f->size for real used
+                        */
+                       qm->real_used-=(orig_size-f->size);
                        qm->used-=(orig_size-f->size);
                }