tree 849ce2a8bf2c2574b8ea9a368873aebfb25186b0
parent a5abba989deceb731047425812d268daf7536575
author Lai Jiangshan <laijs@cn.fujitsu.com> 1299741708 +0800
committer Pekka Enberg <penberg@kernel.org> 1299859594 +0200

slub: automatically reserve bytes at the end of slab

There is no "struct" for slub's slab, it shares with struct page.
But struct page is very small, it is insufficient when we need
to add some metadata for slab.

So we add a field "reserved" to struct kmem_cache, when a slab
is allocated, kmem_cache->reserved bytes are automatically reserved
at the end of the slab for slab's metadata.

Changed from v1:
	Export the reserved field via sysfs

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>