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authorJens Axboe <jens.axboe@oracle.com>2007-04-02 10:06:42 +0200
committerJens Axboe <axboe@nelson.home.kernel.dk>2007-04-30 09:08:17 +0200
commit5972511b77809cb7c9ccdb79b825c54921c5c546 (patch)
tree8dec5821badf9750be04f339f0f621fab2114c8a /drivers/md/dm-io.c
parentb9099ff63c75216d6ca10bce5a1abcd9293c27e6 (diff)
downloadop-kernel-dev-5972511b77809cb7c9ccdb79b825c54921c5c546.zip
op-kernel-dev-5972511b77809cb7c9ccdb79b825c54921c5c546.tar.gz
[BLOCK] Don't pin lots of memory in mempools
Currently we scale the mempool sizes depending on memory installed in the machine, except for the bio pool itself which sits at a fixed 256 entry pre-allocation. There's really no point in "optimizing" this OOM path, we just need enough preallocated to make progress. A single unit is enough, lets scale it down to 2 just to be on the safe side. This patch saves ~150kb of pinned kernel memory on a 32-bit box. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/md/dm-io.c')
-rw-r--r--drivers/md/dm-io.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 4eb73d3..8bdc8a8 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -60,7 +60,7 @@ static int resize_pool(unsigned int new_ios)
if (!_io_pool)
return -ENOMEM;
- _bios = bioset_create(16, 16, 4);
+ _bios = bioset_create(16, 16);
if (!_bios) {
mempool_destroy(_io_pool);
_io_pool = NULL;
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