linux-kernel - Re: [PATCH 2/6] LBS: fix uninitialized swapper

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Date:	Wed, 26 Sep 2007 19:34:29 +0100 (BST)
From:	Hugh Dickins <hugh@...itas.com>
To:	Christoph Lameter <clameter@....com>
cc:	Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] LBS: fix uninitialized swapper_space

On Mon, 24 Sep 2007, Christoph Lameter wrote:
> On Fri, 21 Sep 2007, Hugh Dickins wrote:
> 
> > Swapping crashed immediately: must initialize new fields of swapper_space.
> 
> Thanks for finding that. It may be better though to use the new
> mapping_setup() function instead? That way there is no #ifdef.

Probably better, yes.  In -mm Peter is doing an #ifdef CONFIG_SWAP
bdi_init() on swapper_space.  Would make sense to do both together,
perhaps move them to a swapper_space_init() in swap_state.c, saving
his #ifdef too.  I suggest leave such cleanups until one or the
other is mainlined.

Hugh
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