linux-kernel - Re: [PATCH 16/16] rxrpc: Replace smp_read_barrier_depends() with lockless

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Date:	Thu, 13 Nov 2014 23:07:27 +0000
From:	David Howells <dhowells@...hat.com>
To:	Pranith Kumar <bobby.prani@...il.com>
Cc:	dhowells@...hat.com, "David S. Miller" <davem@...emloft.net>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	"open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>,
	paulmck@...ux.vnet.ibm.com
Subject: Re: [PATCH 16/16] rxrpc: Replace smp_read_barrier_depends() with lockless_dereference()

Pranith Kumar <bobby.prani@...il.com> wrote:

> OK. Should I send in a patch removing these barriers then?

No.  There need to be stronger barriers, at least in some of the cases.
circular-buffers.txt details what is required, but not all of the cases match
the pattern there, so it needs a bit more consideration.

David
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