linux-kernel - Re: [PATCH 07/15] percpu: make percpu-km set chunk->populated bitmap properly

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Message-ID: <alpine.DEB.2.11.1408231059470.29970@gentwo.org>
Date:	Sat, 23 Aug 2014 11:00:05 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Tejun Heo <tj@...nel.org>
cc:	akpm@...ux-foundation.org, laijs@...fujitsu.com,
	linux-kernel@...r.kernel.org, vgoyal@...hat.com
Subject: Re: [PATCH 07/15] percpu: make percpu-km set chunk->populated bitmap
 properly

On Fri, 22 Aug 2014, Tejun Heo wrote:

> percpu-km instantiates the whole chunk on creation and doesn't make
> use of chunk->populated bitmap and leaves it as zero.  While this
> currently doesn't cause any problem, the inconsistency makes it
> difficult to build further logic on top of chunk->populated.  This
> patch makes percpu-km fill chunk->populated on creation so that the
> bitmap is always consistent.

Acked-by: Christoph Lameter <cl@...ux.com>
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