linux-kernel - Re: [PATCH] fix flags length in net 9p

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Message-ID: <Pine.LNX.4.58.0805011721150.12785@gandalf.stny.rr.com>
Date:	Thu, 1 May 2008 17:25:48 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	LKML <linux-kernel@...r.kernel.org>, lucho@...kov.net,
	ericvh@...il.com, mingo@...dmis.org
Subject: Re: [PATCH] fix flags length in net 9p

[ I added Ingo since I think he created the check ]

On Thu, 1 May 2008, Andrew Morton wrote:

> On Thu, 1 May 2008 17:08:05 -0400 (EDT)
> Steven Rostedt <rostedt@...dmis.org> wrote:
>
> > Some files in the net/9p directory uses "int" for flags. This can
> > cause hard to find bugs on some architectures. This patch converts the
> > flags to use "long" instead.
>
> gargh.
>
> > This bug was discovered by doing an allyesconfig make on the -rt kernel
> > where checks are done to ensure all flags are of size sizeof(long).
>
> I was about to suggest that we do something like that...
>
> I wonder how messy it is.  I long ago lost the ability to follow the
> convolutions in include/linux/spinlock*.h :(  gotta patch?

It's not messy at all, it's actually quite elegant. I can pull it out of
the -rt tree, or perhaps Ingo can quickly whip one up as well.

Ingo, you want me to pull it out?

-- Steve

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