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-rw-r--r--include/linux/gfp.h3
-rw-r--r--include/linux/pagemap.h4
-rw-r--r--mm/page_alloc.c2
3 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index af7407e8cfc..208535fd483 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -39,6 +39,7 @@ struct vm_area_struct;
#define __GFP_COMP 0x4000u /* Add compound page metadata */
#define __GFP_ZERO 0x8000u /* Return zeroed page on success */
#define __GFP_NOMEMALLOC 0x10000u /* Don't use emergency reserves */
+#define __GFP_NORECLAIM 0x20000u /* No realy zone reclaim during allocation */
#define __GFP_BITS_SHIFT 20 /* Room for 20 __GFP_FOO bits */
#define __GFP_BITS_MASK ((1 << __GFP_BITS_SHIFT) - 1)
@@ -47,7 +48,7 @@ struct vm_area_struct;
#define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
__GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
__GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP| \
- __GFP_NOMEMALLOC)
+ __GFP_NOMEMALLOC|__GFP_NORECLAIM)
#define GFP_ATOMIC (__GFP_HIGH)
#define GFP_NOIO (__GFP_WAIT)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 0422031161b..d9a25647a29 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -52,12 +52,12 @@ void release_pages(struct page **pages, int nr, int cold);
static inline struct page *page_cache_alloc(struct address_space *x)
{
- return alloc_pages(mapping_gfp_mask(x), 0);
+ return alloc_pages(mapping_gfp_mask(x)|__GFP_NORECLAIM, 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(mapping_gfp_mask(x)|__GFP_COLD|__GFP_NORECLAIM, 0);
}
typedef int filler_t(void *, struct page *);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3c0f69ded6b..a9da20bc2ed 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -729,6 +729,8 @@ should_reclaim_zone(struct zone *z, unsigned int gfp_mask)
{
if (!z->reclaim_pages)
return 0;
+ if (gfp_mask & __GFP_NORECLAIM)
+ return 0;
return 1;
}