From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff Moyer <jmoyer@redhat.com>
Subject: Re: [patch] fs: aio fix rcu lookup
Date: Wed, 19 Jan 2011 14:13:34 -0500
Message-ID: <x49ei88d7vl.fsf@segfault.boston.devel.redhat.com>
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Cc: Nick Piggin <npiggin@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	linux-kernel@vger.kernel.org
To: Jan Kara <jack@suse.cz>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <20110119132123.GC4246@quack.suse.cz> (Jan Kara's message of
	"Wed, 19 Jan 2011 14:21:23 +0100")
Sender: linux-kernel-owner@vger.kernel.org
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Jan Kara <jack@suse.cz> writes:

>  But there's the second race I describe making it possible
> for new IO to be created after io_destroy() has waited for all IO to
> finish...

Can't that be solved by introducing memory barriers around the accesses
to ->dead?

Cheers,
Jeff