linux-kernel - Re: [dm-devel] REQUEST for new 'topology' metrics to be moved out of the 'queue' sysfs directory.

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Message-ID: <771af936681abb7ddc2191eb5b6b68d0.squirrel@neil.brown.name>
Date:	Fri, 26 Jun 2009 23:41:33 +1000 (EST)
From:	"NeilBrown" <neilb@...e.de>
To:	"NeilBrown" <neilb@...e.de>
Cc:	"Jens Axboe" <jens.axboe@...cle.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	"Mike Snitzer" <snitzer@...hat.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Alasdair G Kergon" <agk@...hat.com>, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
	linux-ide@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	"device-mapper development" <dm-devel@...hat.com>
Subject: Re: [dm-devel] REQUEST for new 'topology' metrics to be moved out  
         of the 'queue' sysfs directory.

On Fri, June 26, 2009 11:16 pm, NeilBrown wrote:
> On Fri, June 26, 2009 10:50 pm, Jens Axboe wrote:
>> On Fri, Jun 26 2009, Neil Brown wrote:
>
>>> But for now, please please please can we revert the change which made
>>> 'queue' appear in md and dm devices, (and loop and ...) and put these
>>> generic values somewhere ... generic?
>>
>> No we cannot, not without a time machine. 2.6.30 is released, so it's
>> too late to revert things like that, even if we wanted.
>
> Drat... for some reason I was thinking that it only came in in 2.6.31-rc.
> However it is only documented in ABI/testing, not ABI/stable ... if there
> is any value in that distinction, then it should be possible to move it??
>

No, wait.  I was right.  The addition of 'queue' to md/dm devices
happened post-2.6.30.   So are the additions of physical_block_size etc.
So there is still time to put these in a properly generic place.

Do you have a good reason for them going in /queue?

NeilBrown


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