linux-kernel - Re: setting up CDB filters in udev (was Re: [PATCH v2 0/3] block: add queue-private command filter, editable via sysfs)

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Message-ID: <20121105200955.GA26735@htj.dyndns.org>
Date:	Mon, 5 Nov 2012 12:09:55 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Paolo Bonzini <pbonzini@...hat.com>,
	Ric Wheeler <rwheeler@...hat.com>,
	Petr Matousek <pmatouse@...hat.com>,
	Kay Sievers <kay@...hat.com>, Jens Axboe <axboe@...nel.dk>,
	linux-kernel@...r.kernel.org,
	"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>
Subject: Re: setting up CDB filters in udev (was Re: [PATCH v2 0/3] block:
 add queue-private command filter, editable via sysfs)

Hey, Alan.

On Mon, Nov 05, 2012 at 08:12:08PM +0000, Alan Cox wrote:
> There are two sensible choices here IMHO
> 
> - The simple sysctl
> 
> - Doing the job right
> 
> A half way solution such as that you are proposing seems to me to achieve
> nothing other than guaranteeing we'll have another pile of useless crap
> to maintain forever as ABI.

I'm all for simple.  Just throw in a sysfs binary switch to allow all
SG_IO for a given block device for users w/ write access.  I'd be
completely happy with that.

Thanks.

-- 
tejun
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