linux-kernel - Re: Discard support (was Re: [PATCH] swap: send callback when swap slot is freed)

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Message-ID: <4A898752.9000205@tmr.com>
Date:	Mon, 17 Aug 2009 12:37:38 -0400
From:	Bill Davidsen <davidsen@....com>
To:	James Bottomley <James.Bottomley@...e.de>
CC:	Mark Lord <liml@....ca>, Arjan van de Ven <arjan@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Chris Worley <worleys@...il.com>,
	Matthew Wilcox <matthew@....cx>,
	Bryan Donlan <bdonlan@...il.com>, david@...g.hm,
	Greg Freemyer <greg.freemyer@...il.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Nitin Gupta <ngupta@...are.org>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-scsi@...r.kernel.org, linux-ide@...r.kernel.org,
	Linux RAID <linux-raid@...r.kernel.org>
Subject: Re: Discard support (was Re: [PATCH] swap: send callback when swap
 slot is freed)

James Bottomley wrote:
> On Sun, 2009-08-16 at 14:19 -0400, Mark Lord wrote:
>   
>> James Bottomley wrote:
>>     
>>> Heh, OS writers not having access to the devices is about par for the
>>> current course.
>>>       
>> ..
>>
>> Pity the Linux Foundation doesn't simply step in and supply hardware
>> to us for new tech like this.  Cheap for them, expensive for folks like me.
>>     
>
> Um, to give a developer a selection of manufacturers' SSDs at retail
> prices, you're talking several thousand dollars  ... in these lean
> times, that would be two or three developers not getting travel
> sponsorship per chosen SSD recipient.  It's not a worthwhile tradeoff.
>
> The best the LF can likely do is try to explain to the manufacturers
> that handing out samples at linux conferences (like plumbers) is in
> their own interests.  It can also manage the handout if necessary
> through its HW lending library.
>   

Of install the hardware on a machine and give people access to the 
machine in time slots. Faster than FedEx-ing the hardware, and 
relatively fast to reinstall the OS from scratch. Testing of this type 
doesn't need huge bandwidth.

-- 
bill davidsen <davidsen@....com>
  CTO TMR Associates, Inc

"You are disgraced professional losers. And by the way, give us our money back."
    - Representative Earl Pomeroy,  Democrat of North Dakota
on the A.I.G. executives who were paid bonuses  after a federal bailout.


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