linux-kernel - Re: [PATCH 3/3] comm: ext4: Protect task->comm access by using %ptc

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Date:	Thu, 12 May 2011 15:34:11 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	David Rientjes <rientjes@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>, "Ted Ts'o" <tytso@....edu>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>, linux-mm@...ck.org
Subject: Re: [PATCH 3/3] comm: ext4: Protect task->comm access by using %ptc

On Thu, 12 May 2011 15:29:40 -0700
John Stultz <john.stultz@...aro.org> wrote:

> On Thu, 2011-05-12 at 15:14 -0700, David Rientjes wrote:
> > On Tue, 10 May 2011, John Stultz wrote:
> > 
> > > Converts ext4 comm access to use the safe printk %ptc accessor.
> > > 
> > > CC: Ted Ts'o <tytso@....edu>
> > > CC: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> > > CC: David Rientjes <rientjes@...gle.com>
> > > CC: Dave Hansen <dave@...ux.vnet.ibm.com>
> > > CC: Andrew Morton <akpm@...ux-foundation.org>
> > > CC: linux-mm@...ck.org
> > > Signed-off-by: John Stultz <john.stultz@...aro.org>
> > 
> > I like how this patch illustrates how easy it is to use the new method for 
> > printing a task's command, but it would probably be easier to get the 
> > first two patches in the series (those that add the seqlock and then %ptc) 
> > merged in mainline and then break out a series of conversions such as this 
> > that could go through the individual maintainer's trees.
> 
> Agreed. I just wanted to show how it would be used compared to the
> earlier approach.
> 
> I'll respin the first two patches shortly here. I also need to get the
> checkpatch bit done.
> 
> Andrew, should these go upstream through you?
> 

That works.  I have a little pile of task->comm patches here, but I
expect that resolving everything will be pretty straightforward.

Don't forget the checkpatch patch :)
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