Comment adjustments.

diff --git a/src/backend/utils/mmgr/balloc.c b/src/backend/utils/mmgr/balloc.c
index b9e454b9d486944a71659eeb4f0d02b578795e40..3928c85ca01a6437f929522f7f49a4f468ad2c89 100644 (file)
--- a/src/backend/utils/mmgr/balloc.c
+++ b/src/backend/utils/mmgr/balloc.c
@@ -188,12 +188,12 @@ static void BlockAllocatorUnlinkSpan(char *base, BlockAllocatorHeap *heap,
  */
 static MemoryContextMethods BlockAllocatorMethods = {
        BlockAllocatorAlloc,
-       NULL, /* XXX BlockAllocatorFree, */
-       NULL, /* XXX BlockAllocatorRealloc, */
+       NULL,   /* free: What do we do here?  Existing API doesn't work. */
+       NULL,   /* repalloc: What do we do here?  Existing API doesn't work. */
        BlockAllocatorInit,
        BlockAllocatorReset,
        BlockAllocatorDelete,
-       NULL, /* XXX BlockAllocatorGetChunkSpace, */
+       NULL,   /* chunk space: What do we do here?  Existing API doesn't work. */
        NULL, /* XXX BlockAllocatorIsEmpty, */
        NULL  /* XXX BlockAllocatorStats */
 #ifdef MEMORY_CONTEXT_CHECKING