tree 47f33960c42e4884f56136a61d5dc024895a810e
parent 213eeb9fd9d66c33109e2ace242df214dc3a653d
author David Rientjes <rientjes@google.com> 1326143985 -0800
committer Pekka Enberg <penberg@kernel.org> 1326223869 +0200

slub: disallow changing cpu_partial from userspace for debug caches

For caches with debugging enabled, "slub: Switch per cpu partial page
support off for debugging" changes cpu_partial to 0.  It shouldn't be
tunable from userspace for such caches, otherwise the same accounting
issues arise during validation.

This patch disallows tuning /sys/kernel/slab/cache/cpu_partial to be non-
zero for caches with debugging enabled.

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>