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-rw-r--r--include/linux/pagemap.h5
-rw-r--r--mm/filemap.c23
2 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index ee700c6..839f0b3 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -51,6 +51,10 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask)
#define page_cache_release(page) put_page(page)
void release_pages(struct page **pages, int nr, int cold);
+#ifdef CONFIG_NUMA
+extern struct page *page_cache_alloc(struct address_space *x);
+extern struct page *page_cache_alloc_cold(struct address_space *x);
+#else
static inline struct page *page_cache_alloc(struct address_space *x)
{
return alloc_pages(mapping_gfp_mask(x), 0);
@@ -60,6 +64,7 @@ static inline struct page *page_cache_alloc_cold(struct address_space *x)
{
return alloc_pages(mapping_gfp_mask(x)|__GFP_COLD, 0);
}
+#endif
typedef int filler_t(void *, struct page *);
diff --git a/mm/filemap.c b/mm/filemap.c
index e8f58f7..d4ff48e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -29,6 +29,7 @@
#include <linux/blkdev.h>
#include <linux/security.h>
#include <linux/syscalls.h>
+#include <linux/cpuset.h>
#include "filemap.h"
#include "internal.h"
@@ -427,6 +428,28 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
return ret;
}
+#ifdef CONFIG_NUMA
+struct page *page_cache_alloc(struct address_space *x)
+{
+ if (cpuset_do_page_mem_spread()) {
+ int n = cpuset_mem_spread_node();
+ return alloc_pages_node(n, mapping_gfp_mask(x), 0);
+ }
+ return alloc_pages(mapping_gfp_mask(x), 0);
+}
+EXPORT_SYMBOL(page_cache_alloc);
+
+struct page *page_cache_alloc_cold(struct address_space *x)
+{
+ if (cpuset_do_page_mem_spread()) {
+ int n = cpuset_mem_spread_node();
+ return alloc_pages_node(n, mapping_gfp_mask(x)|__GFP_COLD, 0);
+ }
+ return alloc_pages(mapping_gfp_mask(x)|__GFP_COLD, 0);
+}
+EXPORT_SYMBOL(page_cache_alloc_cold);
+#endif
+
/*
* In order to wait for pages to become available there must be
* waitqueues associated with pages. By using a hash table of
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