linux-kernel - RE: [PATCH 1/3] mpt2sas: remove the use of writeq, since writeq is not atomic

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Date:	Wed, 18 May 2011 13:11:16 -0600
From:	"Moore, Eric" <Eric.Moore@....com>
To:	Milton Miller <miltonm@....com>,
	Hitoshi Mitake <h.mitake@...il.com>,
	"Sam Ravnborg" <sam@...nborg.org>, Ingo Molnar <mingo@...e.hu>,
	Ingo Molnar <mingo@...hat.com>,
	"Desai, Kashyap" <Kashyap.Desai@....com>,
	"Prakash, Sathya" <Sathya.Prakash@....com>
CC:	James Bottomley <James.Bottomley@...senPartnership.com>,
	Matthew Wilcox <matthew@....cx>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	"linux scsi dev" <linux-scsi@...r.kernel.org>,
	"paulus@...ba.org" <paulus@...ba.org>,
	linux powerpc dev <linuxppc-dev@...ts.ozlabs.org>,
	linux pci <linux-pci@...r.kernel.org>,
	linux kernel <linux-kernel@...r.kernel.org>,
	linux-arch <linux-arch@...r.kernel.org>
Subject: RE: [PATCH 1/3] mpt2sas: remove the use of writeq, since writeq is
 not atomic

On Wednesday, May 18, 2011 12:31 PM Milton Miller wrote:
> Ingo I would propose the following commits added in 2.6.29 be reverted.
> I think the current concensus is drivers must know if the writeq is
> not atomic so they can provide their own locking or other workaround.
> 


Exactly.
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