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-rw-r--r--libglusterfs/src/glusterfs/mem-pool.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/libglusterfs/src/glusterfs/mem-pool.h b/libglusterfs/src/glusterfs/mem-pool.h
index 004aa17..e044175 100644
--- a/libglusterfs/src/glusterfs/mem-pool.h
+++ b/libglusterfs/src/glusterfs/mem-pool.h
@@ -230,7 +230,10 @@ typedef struct pooled_obj_hdr {
struct mem_pool *pool;
} pooled_obj_hdr_t;
-#define AVAILABLE_SIZE(p2) (1 << (p2))
+/* Each memory block inside a pool has a fixed size that is a power of two.
+ * However each object will have a header that will reduce the available
+ * space. */
+#define AVAILABLE_SIZE(p2) ((1UL << (p2)) - sizeof(pooled_obj_hdr_t))
typedef struct per_thread_pool {
/* the pool that was used to request this allocation */