diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmzone.h | 8 | ||||
| -rw-r--r-- | include/linux/swap.h | 3 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index d71ff763c9d..da8eb8ad9e9 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -24,6 +24,14 @@ #endif #define MAX_ORDER_NR_PAGES (1 << (MAX_ORDER - 1)) +/* + * PAGE_ALLOC_COSTLY_ORDER is the order at which allocations are deemed + * costly to service. That is between allocation orders which should + * coelesce naturally under reasonable reclaim pressure and those which + * will not. + */ +#define PAGE_ALLOC_COSTLY_ORDER 3 + struct free_area { struct list_head free_list; unsigned long nr_free; diff --git a/include/linux/swap.h b/include/linux/swap.h index 00686888134..665f85f2a3a 100644 --- a/include/linux/swap.h +++ b/include/linux/swap.h @@ -188,7 +188,8 @@ extern int rotate_reclaimable_page(struct page *page); extern void swap_setup(void); /* linux/mm/vmscan.c */ -extern unsigned long try_to_free_pages(struct zone **, gfp_t); +extern unsigned long try_to_free_pages(struct zone **zones, int order, + gfp_t gfp_mask); extern unsigned long shrink_all_memory(unsigned long nr_pages); extern int vm_swappiness; extern int remove_mapping(struct address_space *mapping, struct page *page); |