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 /fs/jbd/journal.c | |
| parent | Move free pages between lists on steal (diff) | |
| download | linux-dev-e12ba74d8ff3e2f73a583500d7095e406df4d093.tar.xz linux-dev-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 'fs/jbd/journal.c')
| -rw-r--r-- | fs/jbd/journal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c index 06ab3c10b1b8..a6be78c05dce 100644 --- a/fs/jbd/journal.c +++ b/fs/jbd/journal.c @@ -1710,7 +1710,7 @@ static int journal_init_journal_head_cache(void) journal_head_cache = kmem_cache_create("journal_head", sizeof(struct journal_head), 0, /* offset */ - 0, /* flags */ + SLAB_TEMPORARY, /* flags */ NULL); /* ctor */ retval = 0; if (journal_head_cache == 0) { @@ -2006,7 +2006,7 @@ static int __init journal_init_handle_cache(void) jbd_handle_cache = kmem_cache_create("journal_handle", sizeof(handle_t), 0, /* offset */ - 0, /* flags */ + SLAB_TEMPORARY, /* flags */ NULL); /* ctor */ if (jbd_handle_cache == NULL) { printk(KERN_EMERG "JBD: failed to create handle cache\n"); |