tree 7181c144b28f37d27275f74a538b01f891e149f7
parent 0dc2bc49be545626a2dc6da133202ffe69ac3fcc
author Andi Kleen <ak@linux.intel.com> 1312259886 -0700
committer root <root@serles.lst.de> 1319806737 +0200

direct-io: use a slab cache for struct dio

A direct slab call is slightly faster than kmalloc and can be better cached
per CPU. It also avoids rounding to the next kmalloc slab.

In addition this enforces cache line alignment for struct dio to avoid
any false sharing.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>