From e12ba74d8ff3e2f73a583500d7095e406df4d093 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Tue, 16 Oct 2007 01:25:52 -0700 Subject: Group short-lived and reclaimable kernel allocations This patch marks a number of allocations that are either short-lived such as network buffers or are reclaimable such as inode allocations. When something like updatedb is called, long-lived and unmovable kernel allocations tend to be spread throughout the address space which increases fragmentation. This patch groups these allocations together as much as possible by adding a new MIGRATE_TYPE. The MIGRATE_RECLAIMABLE type is for allocations that can be reclaimed on demand, but not moved. i.e. they can be migrated by deleting them and re-reading the information from elsewhere. Signed-off-by: Mel Gorman Cc: Andy Whitcroft Cc: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/shmem.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'mm/shmem.c') diff --git a/mm/shmem.c b/mm/shmem.c index 855b93b3637..76ecbac0d55 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -95,9 +95,9 @@ static inline struct page *shmem_dir_alloc(gfp_t gfp_mask) * BLOCKS_PER_PAGE on indirect pages, assume PAGE_CACHE_SIZE: * might be reconsidered if it ever diverges from PAGE_SIZE. * - * __GFP_MOVABLE is masked out as swap vectors cannot move + * Mobility flags are masked out as swap vectors cannot move */ - return alloc_pages((gfp_mask & ~__GFP_MOVABLE) | __GFP_ZERO, + return alloc_pages((gfp_mask & ~GFP_MOVABLE_MASK) | __GFP_ZERO, PAGE_CACHE_SHIFT-PAGE_SHIFT); } -- cgit v1.2.3