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| 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 /kernel | |
| parent | c361be55b3128474aa66d31092db330b07539103 (diff) | |
| download | lwn-e12ba74d8ff3e2f73a583500d7095e406df4d093.tar.gz lwn-e12ba74d8ff3e2f73a583500d7095e406df4d093.zip | |
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 'kernel')
| -rw-r--r-- | kernel/cpuset.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 8b2daac4de83..e196510aa40f 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1463,7 +1463,7 @@ static ssize_t cpuset_common_file_read(struct file *file, char __user *buf, ssize_t retval = 0; char *s; - if (!(page = (char *)__get_free_page(GFP_KERNEL))) + if (!(page = (char *)__get_free_page(GFP_TEMPORARY))) return -ENOMEM; s = page; |