linux-kernel - Re: [ANNOUNCE] Status of unlocked

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Message-ID: <20101027075349.GA32585@gargoyle.fritz.box>
Date:	Wed, 27 Oct 2010 09:53:49 +0200
From:	Andi Kleen <ak@...ux.intel.com>
To:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
Cc:	James Bottomley <James.Bottomley@...e.de>,
	Mike Anderson <andmike@...ux.vnet.ibm.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	Vasu Dev <vasu.dev@...ux.intel.com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Mike Christie <michaelc@...wisc.edu>,
	Jens Axboe <jaxboe@...ionio.com>,
	James Smart <james.smart@...lex.com>,
	Andrew Vasquez <andrew.vasquez@...gic.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Hannes Reinecke <hare@...e.de>,
	Joe Eykholt <jeykholt@...co.com>,
	Christoph Hellwig <hch@....de>,
	Jon Hawley <warthog9@...nel.org>,
	Brian King <brking@...ux.vnet.ibm.com>,
	Christof Schmitt <christof.schmitt@...ibm.com>,
	Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [ANNOUNCE] Status of unlocked_qcmds=1 operation for .37

> This sounds like a pretty reasonable compromise that I think is slightly
> less risky for the LLDs with the ghosts and cob-webs hanging off of
> them.

They won't get tested either next release cycle. Essentially
near nobody uses them.

> 
> What do you think..?

Standard linux practice is to simply push the locks down. That's a pretty
mechanical operation and shouldn't be too risky

With some luck you could even do it with coccinelle.

-Andi
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