[PATCH] remove HASH_HIGHMEM

It has no users and it's doubtful that we'll need it again.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/bootmem.h

@@ -119,8 +119,7 @@ extern void *alloc_large_system_hash(const char *tablename,
 				     unsigned int *_hash_mask,
 				     unsigned long limit);
 
-#define HASH_HIGHMEM	0x00000001	/* Consider highmem? */
-#define HASH_EARLY	0x00000002	/* Allocating during early boot? */
+#define HASH_EARLY	0x00000001	/* Allocating during early boot? */
 
 /* Only NUMA needs hash distribution.
  * IA64 is known to have sufficient vmalloc space.

mm/page_alloc.c

@@ -3226,7 +3226,7 @@ void *__init alloc_large_system_hash(const char *tablename,
 	/* allow the kernel cmdline to have a say */
 	if (!numentries) {
 		/* round applicable memory size up to nearest megabyte */
-		numentries = (flags & HASH_HIGHMEM) ? nr_all_pages : nr_kernel_pages;
+		numentries = nr_kernel_pages;
 		numentries += (1UL << (20 - PAGE_SHIFT)) - 1;
 		numentries >>= 20 - PAGE_SHIFT;
 		numentries <<= 20 - PAGE_SHIFT;