gru: handle blades without memory

Do not use alloc_pages_exact_node() to allocate GRU tables.  If a blade
has no local memory, nid will be -1.  Use alloc_pages_node() instead.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/misc/sgi-gru/grufile.c

@@ -266,8 +266,8 @@ static int gru_init_tables(unsigned long gru_base_paddr, void *gru_base_vaddr)
 	max_user_dsr_bytes = GRU_NUM_DSR_BYTES;
 	for_each_possible_blade(bid) {
 		pnode = uv_blade_to_pnode(bid);
-		nid = uv_blade_to_memory_nid(bid);
-		page = alloc_pages_exact_node(nid, GFP_KERNEL, order);
+		nid = uv_blade_to_memory_nid(bid);/* -1 if no memory on blade */
+		page = alloc_pages_node(nid, GFP_KERNEL, order);
 		if (!page)
 			goto fail;
 		gru_base[bid] = page_address(page);