linux-kernel - Re: [PATCHv3 4/5] mm: make compound

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Message-ID: <20150827160355.GI27052@dhcp22.suse.cz>
Date:	Thu, 27 Aug 2015 18:03:55 +0200
From:	Michal Hocko <mhocko@...nel.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Hugh Dickins <hughd@...gle.com>, Vlastimil Babka <vbabka@...e.cz>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Johannes Weiner <hannes@...xchg.org>,
	David Rientjes <rientjes@...gle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Christoph Lameter <cl@...ux.com>
Subject: Re: [PATCHv3 4/5] mm: make compound_head() robust

On Thu 27-08-15 17:09:17, Michal Hocko wrote:
[...]
> Btw. Do we need the same think for page::mapping and KSM?

I guess we are safe here because the address for mappings comes from
kmalloc and that aligned properly, right?
-- 
Michal Hocko
SUSE Labs
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