linux-kernel - Re: [PATCH v2 07/20] mm, hugetlb: unify region structure handling

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Message-ID: <20130822065613.GD13415@lge.com>
Date:	Thu, 22 Aug 2013 15:56:13 +0900
From:	Joonsoo Kim <iamjoonsoo.kim@....com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>,
	Michal Hocko <mhocko@...e.cz>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Hugh Dickins <hughd@...gle.com>,
	Davidlohr Bueso <davidlohr.bueso@...com>,
	David Gibson <david@...son.dropbear.id.au>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Wanpeng Li <liwanp@...ux.vnet.ibm.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Hillf Danton <dhillf@...il.com>
Subject: Re: [PATCH v2 07/20] mm, hugetlb: unify region structure handling

On Wed, Aug 21, 2013 at 03:27:38PM +0530, Aneesh Kumar K.V wrote:
> Joonsoo Kim <iamjoonsoo.kim@....com> writes:
> 
> > Currently, to track a reserved and allocated region, we use two different
> > ways for MAP_SHARED and MAP_PRIVATE. For MAP_SHARED, we use
> > address_mapping's private_list and, 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.
> >
> > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
> 
> As mentioned earlier kref_put is confusing because we always have
> reference count == 1 , otherwise

Okay. In that case, I will use release function directly.

> 
> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>

Thanks!
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