tree f9a097d8da73f33703622d8ef4237997248b6f39
parent e438444de82f354563d46ee5d991b5916dd19b01
author Christoph Lameter <cl@linux-foundation.org> 1279557551 -0500
committer Pekka Enberg <penberg@cs.helsinki.fi> 1280809712 +0300

slub: Allow removal of slab caches during boot

Serialize kmem_cache_create and kmem_cache_destroy using the slub_lock. Only
possible after the use of the slub_lock during dynamic dma creation has been
removed.

Then make sure that the setup of the slab sysfs entries does not race
with kmem_cache_create and kmem_cache destroy.

If a slab cache is removed before we have setup sysfs then simply skip over
the sysfs handling.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Roland Dreier <rdreier@cisco.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>