Re: [PATCH v2 05/10] mm, kfence: insert KFENCE hooks for SLUB

Alexander Potapenko
2020-09-17T09:51:34Z

On Thu, Sep 17, 2020 at 11:40 AM Christopher Lameter <cl@linux.com> wrote:
>
> On Tue, 15 Sep 2020, Marco Elver wrote:
>
> > void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
> > {
> > - void *ret = slab_alloc(s, gfpflags, _RET_IP_);
> > + void *ret = slab_alloc(s, gfpflags, _RET_IP_, s->object_size);
>
> The additional size parameter is a part of a struct kmem_cache that is
> already passed to the function. Why does the parameter list need to be
> expanded?

See my response to the similar question about the SLAB allocator:
https://lore.kernel.org/linux-arm-kernel/CAG_fn=XMc8NPZPFtUE=rdoR=XJH4F+TxZs-w5n4VuaWKTjcasw@mail.gmail.com/

--
Alexander Potapenko
Software Engineer

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