Re: [PATCH v3 05/14] mm: Move 'private' union within struct page

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On 04/18/2018 08:49 PM, Matthew Wilcox wrote:
> From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
> 
> By moving page->private to the fourth word of struct page, we can put
> the SLUB counters in the same word as SLAB's s_mem and still do the
> cmpxchg_double trick.  Now the SLUB counters no longer overlap with
> the refcount.
> 
> Signed-off-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>




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