linux-kernel - Re: [PATCHv4 3/7] zsmalloc: use page->private instead of page->first

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Message-ID: <20150831013052.GA2168@swordfish>
Date:	Mon, 31 Aug 2015 10:30:52 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
To:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hughd@...gle.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	David Rientjes <rientjes@...gle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCHv4 3/7] zsmalloc: use page->private instead of
 page->first_page

On (08/27/15 16:59), Kirill A. Shutemov wrote:
> We are going to rework how compound_head() work. It will not use
> page->first_page as we have it now.
> 
> The only other user of page->first_page beyond compound pages is
> zsmalloc.
> 
> Let's use page->private instead of page->first_page here. It occupies
> the same storage space.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Acked-by: Vlastimil Babka <vbabka@...e.cz>

Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>

	-ss
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