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authorMel Gorman <mel@csn.ul.ie>2007-10-16 04:25:52 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 12:43:00 -0400
commite12ba74d8ff3e2f73a583500d7095e406df4d093 (patch)
treea0d3385b65f0b3e1e00b0bbf11b75e7538a93edb /kernel/cpuset.c
parentc361be55b3128474aa66d31092db330b07539103 (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 'kernel/cpuset.c')
-rw-r--r--kernel/cpuset.c2
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,
1463 ssize_t retval = 0; 1463 ssize_t retval = 0;
1464 char *s; 1464 char *s;
1465 1465
1466 if (!(page = (char *)__get_free_page(GFP_KERNEL))) 1466 if (!(page = (char *)__get_free_page(GFP_TEMPORARY)))
1467 return -ENOMEM; 1467 return -ENOMEM;
1468 1468
1469 s = page; 1469 s = page;