From: Andrew Morton <akpm@linux-foundation.org>
To: paulmck@linux.vnet.ibm.com
Cc: nickpiggin@yahoo.com.au, vegard.nossum@gmail.com, mingo@elte.hu,
stable@kernel.org, npiggin@suse.de, penberg@cs.helsinki.fi,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: fix lazy vmap purging (use-after-free error)
Date: Mon, 23 Feb 2009 12:30:45 -0800 [thread overview]
Message-ID: <20090223123045.aa993f8f.akpm@linux-foundation.org> (raw)
In-Reply-To: <20090223201236.GS6751@linux.vnet.ibm.com>
On Mon, 23 Feb 2009 12:12:36 -0800
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
> >
> > As I suggested before, please add a new state variable which is private
> > to your subsystem. That way it remains isolated from other subsystems.
>
> OK, so my thought would be to have a function call into RCU from either
> init_post() or from rest_init(). This function would then set a variable
> private to RCU.
>
> Seem reasonable?
>
If that flag will only be used by one flavour of RCU then that would be
a good way to go.
Otherwise, heck, just make it a global variable with a well-chosen name
and write to it directly. Simple, perfectly clear and understandable..
next prev parent reply other threads:[~2009-02-23 20:31 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-20 13:41 [PATCH] mm: fix lazy vmap purging (use-after-free error) Vegard Nossum
2009-02-20 13:50 ` Ingo Molnar
2009-02-20 13:58 ` Pekka Enberg
2009-02-20 14:01 ` Ingo Molnar
2009-02-20 14:18 ` Pekka Enberg
2009-02-20 15:41 ` Paul E. McKenney
2009-02-20 14:51 ` Vegard Nossum
2009-02-20 15:46 ` Paul E. McKenney
2009-02-20 16:04 ` Ingo Molnar
2009-02-20 16:44 ` Paul E. McKenney
2009-02-20 17:14 ` Ingo Molnar
2009-02-20 17:25 ` Paul E. McKenney
2009-02-20 23:51 ` Vegard Nossum
2009-02-21 1:40 ` Paul E. McKenney
2009-02-21 9:30 ` Vegard Nossum
2009-02-21 17:47 ` Paul E. McKenney
2009-02-21 18:08 ` Vegard Nossum
2009-02-21 18:33 ` Paul E. McKenney
2009-02-21 18:37 ` Vegard Nossum
2009-02-22 3:00 ` Paul E. McKenney
2009-02-23 5:17 ` Paul E. McKenney
2009-02-23 8:24 ` Vegard Nossum
2009-02-23 15:39 ` Paul E. McKenney
2009-02-23 9:07 ` Ingo Molnar
2009-02-23 9:17 ` Andrew Morton
2009-02-23 9:27 ` Ingo Molnar
2009-02-23 15:56 ` Paul E. McKenney
2009-02-23 13:29 ` Nick Piggin
2009-02-23 16:17 ` Paul E. McKenney
2009-02-23 17:20 ` Ingo Molnar
2009-02-23 19:10 ` Andrew Morton
2009-02-23 19:30 ` Paul E. McKenney
2009-02-23 19:59 ` Andrew Morton
2009-02-23 20:12 ` Paul E. McKenney
2009-02-23 20:30 ` Andrew Morton [this message]
2009-02-23 19:33 ` Ingo Molnar
2009-02-23 20:04 ` Andrew Morton
2009-02-23 20:09 ` Ingo Molnar
2009-02-23 20:44 ` Paul E. McKenney
2009-02-23 20:43 ` Paul E. McKenney
2009-02-24 3:23 ` Nick Piggin
2009-02-24 3:37 ` Paul E. McKenney
2009-02-21 19:21 ` Vegard Nossum
2009-02-20 16:01 ` Ingo Molnar
2009-02-20 16:49 ` Paul E. McKenney
2009-02-20 15:56 ` Paul E. McKenney
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