linux-kernel - Re: [PATCH 1/8] mm, hugetlb: unify region structure handling

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Message-ID: <1390856539-4i40zgqy-mutt-n-horiguchi@ah.jp.nec.com>
Date:	Mon, 27 Jan 2014 16:02:19 -0500
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Davidlohr Bueso <davidlohr@...com>
Cc:	akpm@...ux-foundation.org, iamjoonsoo.kim@....com, riel@...hat.com,
	mgorman@...e.de, mhocko@...e.cz, aneesh.kumar@...ux.vnet.ibm.com,
	kamezawa.hiroyu@...fujitsu.com, hughd@...gle.com,
	david@...son.dropbear.id.au, js1304@...il.com,
	liwanp@...ux.vnet.ibm.com, dhillf@...il.com, rientjes@...gle.com,
	aswin@...com, scott.norton@...com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/8] mm, hugetlb: unify region structure handling

On Sun, Jan 26, 2014 at 07:52:19PM -0800, Davidlohr Bueso wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@....com>
> 
> Currently, to track reserved and allocated regions, we use two different
> ways, depending on the mapping. For MAP_SHARED, we use address_mapping's
> private_list and, while for MAP_PRIVATE, we use a resv_map.
> 
> Now, we are preparing to change a coarse grained lock which protect a
> region structure to fine grained lock, and this difference hinder it.
> So, before changing it, unify region structure handling, consistently
> using a resv_map regardless of the kind of mapping.
> 
> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
> [Updated changelog]
> Signed-off-by: Davidlohr Bueso <davidlohr@...com>

Reviewed-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
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