linux-kernel - Re: [PATCH -V2 1/9] mm: move hugetlbfs region tracking function to common code

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Date:	Thu, 1 Mar 2012 14:33:45 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	linux-mm@...ck.org, mgorman@...e.de,
	kamezawa.hiroyu@...fujitsu.com, dhillf@...il.com,
	aarcange@...hat.com, mhocko@...e.cz, hannes@...xchg.org,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	Andrea Righi <andrea@...terlinux.com>,
	John Stultz <john.stultz@...aro.org>
Subject: Re: [PATCH -V2 1/9] mm:  move hugetlbfs region tracking function to
 common code

On Thu,  1 Mar 2012 14:46:12 +0530
"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> wrote:

> This patch moves the hugetlbfs region tracking function to
> common code. We will be using this in later patches in the
> series.
> 
> ...
>
> +struct file_region {
> +	struct list_head link;
> +	long from;
> +	long to;
> +};

Both Andrea Righi and John Stultz are working on (more sophisticated)
versions of file region tracking code.  And we already have a (poor)
implementation in fs/locks.c.

That's four versions of the same thing floating around the place.  This
is nutty.
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