diff options
| author | Mel Gorman <mel@csn.ul.ie> | 2007-10-16 01:25:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:00 -0700 |
| commit | e12ba74d8ff3e2f73a583500d7095e406df4d093 (patch) | |
| tree | a0d3385b65f0b3e1e00b0bbf11b75e7538a93edb /mm/shmem.c | |
| parent | c361be55b3128474aa66d31092db330b07539103 (diff) | |
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 <mel@csn.ul.ie>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 4 |
1 files changed, 2 insertions, 2 deletions
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); } |