slab: introduce slab_max_order kernel parameter
authorDavid Rientjes <rientjes@google.com>
Wed, 19 Oct 2011 05:09:28 +0000 (22:09 -0700)
committerPekka Enberg <penberg@kernel.org>
Thu, 10 Nov 2011 19:25:30 +0000 (21:25 +0200)
commit3df1cccdfb3fab6aa9176beb655d802eb384eabc
treeab3e1e206a9120e936caa52ea85193aecf670e42
parent543585cc5b07fa99a2dc897159fbf48c1eb73058
slab: introduce slab_max_order kernel parameter

Introduce new slab_max_order kernel parameter which is the equivalent of
slub_max_order.

For immediate purposes, allows users to override the heuristic that sets
the max order to 1 by default if they have more than 32MB of RAM.  This
may result in page allocation failures if there is substantial
fragmentation.

Another usecase would be to increase the max order for better
performance.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Documentation/kernel-parameters.txt
mm/slab.c