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

From: Andrew Morton
Date: Thu May 12 2011 - 18:34:22 EST


On Thu, 12 May 2011 15:29:40 -0700
John Stultz <john.stultz@xxxxxxxxxx> 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@xxxxxxx>
> > > CC: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
> > > CC: David Rientjes <rientjes@xxxxxxxxxx>
> > > CC: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>
> > > CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> > > CC: linux-mm@xxxxxxxxx
> > > Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
> >
> > 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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