thanks for review my patch.

I want to move these macros to linux/slab.h cause I don't want perform
merge in slab level.   for example. ss read /proc/slabinfo to finger out
how many requests pending in the TCP listern queue.  it  use slabe name
"tcp_timewait_sock_ops" search in /proc/slabinfo, although the name is
obsolete. so I committed other patch  to iproute2, replaced
tcp_timewait_sock_ops by request_sock_TCP, but it still not work, because
slab request_sock_TCP  merge into kmalloc-256.

how could I prevent this merge happen.  I'm new to kernel, this is my first
time submit a kernel patch, thanks!


On Wed, Jan 7, 2015 at 11:16 AM, Christoph Lameter <cl@linux.com> wrote:

> On Wed, 7 Jan 2015, Bryton Lee wrote:
>
> > move MACRO SLAB_NEVER_MERGE and SLAB_MERGE_SAME from file
> mm/slab_common.c
> > to file linux/slab.h.
> > let other kernel code create slab can use these flags.
>
> This does not make sense. The fact that a slab has been merged is
> available from a field in the kmem_cache structure (aliases).
>
>
> These two macros are criteria for the slab allocators to perform merges.
> The merge decision is the slab allocators decision and not the decision of
> other kernel code.
>
>
>


-- 
Best Regards

Bryton.Lee