linux-kernel - Re: [PATCH RESEND 2/2] Fix some kallsyms

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Message-Id: <20070316101514.8a8ffbc7.akpm@linux-foundation.org>
Date:	Fri, 16 Mar 2007 10:15:14 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Paulo Marques <pmarques@...popie.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Alexey Dobriyan <adobriyan@...ru>,
	linux-kernel@...r.kernel.org, devel@...nvz.org, tglx@...utronix.de,
	viro@...iv.linux.org.uk, rusty@...tcorp.com.au
Subject: Re: [PATCH RESEND 2/2] Fix some kallsyms_lookup() vs rmmod races

On Fri, 16 Mar 2007 17:16:39 +0000 Paulo Marques <pmarques@...popie.com> wrote:

> Does freeze_processes() / unfreeze_processes() solve this by only 
> freezing processes that have voluntarily scheduled (opposed to just 
> being preempted)?

It goes much much further than that.  Those processes need to actually
perform an explicit call to try_to_freeze().
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