David Laight <david.lai...@aculab.com> wrote:
> From: Pablo Neira Ayuso
> > Sent: 06 July 2016 15:24
> > From: Florian Westphal <f...@strlen.de>
> >
> > increases struct size by 32 bytes (288 -> 320), but it is the right thing,
> > else any attempt to (re-)arrange nf_conn members by cacheline won't work.
> ...
> > nf_conntrack_cachep = kmem_cache_create("nf_conntrack",
> > sizeof(struct nf_conn), 0,
> > - SLAB_DESTROY_BY_RCU, NULL);
> > + SLAB_DESTROY_BY_RCU |
> > SLAB_HWCACHE_ALIGN, NULL);
>
> What happens on systems with cache lines that are longer than 64 bytes?
Sorry, I don't have a secret decoder ring.
HWCACHE_ALIGN is used for several other net slab caches, including
skbuff, so why is this a problem here?
