===== include/linux/pagemap.h 1.43 vs edited =====
--- 1.43/include/linux/pagemap.h	2004-06-24 01:55:57 -07:00
+++ edited/include/linux/pagemap.h	2004-08-12 13:57:04 -07:00
@@ -49,15 +49,24 @@
 #define page_cache_get(page)		get_page(page)
 #define page_cache_release(page)	put_page(page)
 void release_pages(struct page **pages, int nr, int cold);
+/* Used for spreading out page cache allocations */
+extern int next_node;
 
 static inline struct page *page_cache_alloc(struct address_space *x)
 {
-	return alloc_pages(mapping_gfp_mask(x), 0);
+	/*
+	 * We use a mod function here so that we don't have trouble with
+	 * preemption since the value of the nid argument will always be
+	 * less than numnodes.
+	 */
+	return alloc_pages_node(next_node++ % numnodes, mapping_gfp_mask(x),
+				0);
 }
 
 static inline struct page *page_cache_alloc_cold(struct address_space *x)
 {
-	return alloc_pages(mapping_gfp_mask(x)|__GFP_COLD, 0);
+	return alloc_pages_node(next_node++ % numnodes,
+				mapping_gfp_mask(x)|__GFP_COLD, 0);
 }
 
 typedef int filler_t(void *, struct page *);
===== mm/mmap.c 1.135 vs edited =====
--- 1.135/mm/mmap.c	2004-07-17 17:00:00 -07:00
+++ edited/mm/mmap.c	2004-08-12 13:57:39 -07:00
@@ -59,6 +59,8 @@
 int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
 atomic_t vm_committed_space = ATOMIC_INIT(0);
 
+int next_node; /* Used for NUMA page cache distribution */
+
 EXPORT_SYMBOL(sysctl_overcommit_memory);
 EXPORT_SYMBOL(sysctl_overcommit_ratio);
 EXPORT_SYMBOL(sysctl_max_map_count);