linux-kernel - Re: BUG? "Call fasync() functions without the BKL" is racy

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Date:	Tue, 02 Dec 2008 17:30:45 +0100
From:	Andi Kleen <ak@...ux.intel.com>
To:	Oleg Nesterov <oleg@...hat.com>
CC:	Jonathan Corbet <corbet@....net>,
	Al Viro <viro@...iv.linux.org.uk>,
	Vitaly Mayatskikh <vmayatsk@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: BUG? "Call fasync() functions without the BKL" is racy


> Still I'd like to see the better fix for the long term, the only (afaics)
> flag with the "side effect" is FASYNC, perhaps we can move it to (say)
> ->f_mode, but this is ugly of course and still need serialization for the
> pathes which play with FASYNC.

I wonder if we need FASYNC at all. This could be gotten implicitely by
looking at the fasync_list

-Andi
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