* grub-core/kern/mm.c (grub_real_malloc): Don't update the pointer to

current memory when allocating large chunks. This significantly
	decreases memory fragmentation.

grub-core/kern/mm.c

@@ -298,7 +298,10 @@ grub_real_malloc (grub_mm_header_t *first, grub_size_t n, grub_size_t align)
 	  /* Mark find as a start marker for next allocation to fasten it.
 	     This will have side effect of fragmenting memory as small
 	     pieces before this will be un-used.  */
-	  *first = q;
+	  /* So do it only for chunks under 64K.  */
+	  if (n < (0x10000 >> GRUB_MM_ALIGN_LOG2)
+	      || *first == p)
+	    *first = q;
 
 	  return p + 1;
 	}