On 21/10/2017 13.06, Alexey Dobriyan wrote:
struct kmem_cache::flags is "unsigned long" which is unnecessary on 64-bit as no flags are defined in the higher bits. Switch the field to 32-bit and save some space on x86_64 until such flags appear: add/remove: 0/0 grow/shrink: 0/107 up/down: 0/-657 (-657) function old new delta sysfs_slab_add 720 719 -1 ... check_object 699 676 -23 Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
Acked-by: Pekka Enberg <penb...@kernel.org>