Description: Increase GRUB_DISK_CACHE_SIZE from 8 to 1024 sectors
Author: Kamal Mostafa <kamal@canonical.com>

  * Increase GRUB_DISK_CACHE_SIZE from 8 to 1024 sectors for improved
    disk I/O performance.

--- grub2-1.99.orig/include/grub/disk.h
+++ grub2-1.99/include/grub/disk.h
@@ -133,8 +133,8 @@
 #define GRUB_DISK_CACHE_NUM	1021
 
 /* The size of a disk cache in sector units.  */
-#define GRUB_DISK_CACHE_SIZE	8
-#define GRUB_DISK_CACHE_BITS	3
+#define GRUB_DISK_CACHE_SIZE	1024
+#define GRUB_DISK_CACHE_BITS	10
 
 /* Return value of grub_disk_get_size() in case disk size is unknown. */
 #define GRUB_DISK_SIZE_UNKNOWN	 0xffffffffffffffffULL