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: <b0aa07ac85efd6040501e4ea875176a3.squirrel@neil.brown.name>
Date:	Mon, 29 Jun 2009 20:52:54 +1000 (EST)
From:	"NeilBrown" <neilb@...e.de>
To:	"Jens Axboe" <jens.axboe@...cle.com>
Cc:	"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 Mon, June 29, 2009 8:18 pm, Jens Axboe wrote:
> On Sat, Jun 27 2009, Neil Brown wrote:
>> > There's no such thing as first or second class block devices. The fact
>> > that drivers using ->make_request_fn directly do not utilize the full
>> > scope of the queue isn't a very interesting fact, imho.
>>
>>  Your phrase "drivers using ->make_request_fn directly" seems to
>>  suggest you are looking at things very differently to me.
>>
>>  From my perspective, all drivers use ->make_request_fn equally.
>>  Some set it to "__make_request", some to "md_make_request", others to
>>  "dm_request" or "loop_make_request" etc.
>
> Neil, will you please stop these silly games. Stop trying to invent
> differences based on interpretations of what you read into my replies.


We do seem to be having trouble communicating don't we :-(
Be assured that it is not my intention to play games, silly or otherwise.

Maybe I should just try sending you patches.  Maybe that will
make my meaning clearer.

For the moment, I'm much more interested in the other question,
that of whether I can avoid having a 'queue' directory introduced into
md/dm/etc device directories in sysfs.

NeilBrown

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