Re: [PATCHv3 1/5] mm: drop page->slab_page

[Kirill A. Shutemov]

On Mon, Aug 24, 2015 at 05:02:16PM +0200, Vlastimil Babka wrote:
> On 08/19/2015 11:21 AM, Kirill A. Shutemov wrote:
> >Since 8456a648cf44 ("slab: use struct page for slab management") nobody
> >uses slab_page field in struct page.
> >
> >Let's drop it.
> 
> Ah, how about dropping this comment in mm/slab.c:slab_destroy() as well?
> 
>                 /*
>                  * RCU free overloads the RCU head over the LRU.
>                  * slab_page has been overloeaded over the LRU,
>                  * however it is not used from now on so that
>                  * we can use it safely.
>                  */

Actually, whole block can be replaced by

	call_rcu(&page->rcu_head, kmem_rcu_free);

Thanks.

-- 
 Kirill A. Shutemov
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