netdev - Re: [PATCH 1/3] seq_file: add RCU versions of new hlist/list iterators (v3)

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Message-ID: <20100219222239.GN30031@ZenIV.linux.org.uk>
Date:	Fri, 19 Feb 2010 22:22:39 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>,
	Miklos Szeredi <mszeredi@...e.cz>,
	Eric Dumazet <eric.dumazet@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Jiri Pirko <jpirko@...hat.com>, Jiri Olsa <jolsa@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Jamal Hadi Salim <hadi@...erus.ca>,
	Neil Horman <nhorman@...driver.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 1/3] seq_file: add RCU versions of new hlist/list
 iterators (v3)

On Fri, Feb 19, 2010 at 01:59:14PM -0800, Stephen Hemminger wrote:
> Many usages of seq_file use RCU protected lists, so non RCU
> iterators will not work safely.

Looks sane, provided that you give strong warnings about access to
contents of list elements...
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