linux-kernel - Re: [RESEND GIT PATCH tj-percpu] percpu: fix spurious alignment WARN in legacy SMP percpu allocator

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Date:	Wed, 11 Mar 2009 10:31:10 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Tejun Heo <tj@...nel.org>
Cc:	"Sachin P. Sant" <sachinp@...ibm.com>, linux-next@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linuxppc-dev@...abs.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND GIT PATCH tj-percpu] percpu: fix spurious alignment
	WARN in legacy SMP percpu allocator


* Tejun Heo <tj@...nel.org> wrote:

> Impact: remove spurious WARN on legacy SMP percpu allocator
> 
> Commit f2a8205c4ef1af917d175c36a4097ae5587791c8 incorrectly added too
> tight WARN_ON_ONCE() on alignments for UP and legacy SMP percpu
> allocator.  Commit e317603694bfd17b28a40de9d65e1a4ec12f816e fixed it
> for UP but legacy SMP allocator was forgotten.  Fix it.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Reported-by: Sachin P. Sant <sachinp@...ibm.com>
> ---
> (RESEND: cc'ing Ingo. :-)
> 
> Oops, that was a stupid omission.  This patch should fix it.  Ingo,
> please pull from the following git vector to receive the first first
> four patches from the use-dynamic-percpu-allocator-by-default patchset
> (without the actual conversion which can disrupt archs) + this patch.
> I moved the actual conversion patch into #tj-percpu-exp branch, so the
> pull should be safe.
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git tj-percpu
> 
> Thanks.

Pulled into tip:core/percpu, thanks a lot Tejun!

	Ingo
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