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| author | Richard Kennedy <richard@rsk.demon.co.uk> | 2010-02-26 14:00:43 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-02-26 14:00:43 +0100 |
| commit | 58c24a61614f5da290068e47fc5ec65370eb61dd (patch) | |
| tree | ae8f51cef37239a4ebe12379deca7042680161c1 /kernel/compat.c | |
| parent | 024f9066165ffe9c8284431c78adcbcddd309831 (diff) | |
| download | op-kernel-dev-58c24a61614f5da290068e47fc5ec65370eb61dd.zip op-kernel-dev-58c24a61614f5da290068e47fc5ec65370eb61dd.tar.gz | |
block: remove padding from io_context on 64bit builds
On 64 bit builds when CONFIG_BLK_CGROUP=n (the default) this removes 8
bytes of padding from structure io_context and drops its size from 72 to
64 bytes, so needing one fewer cachelines and allowing more objects per
slab in it's kmem_cache.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
----
patch against 2.6.33
compiled & test on x86_64 AMDX2
regards
Richard
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'kernel/compat.c')
0 files changed, 0 insertions, 0 deletions
