linux-kernel - Re: [PATCH 3/5] ata: Add TRIM infrastructure

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Message-ID: <20090402164742.GP2661@linux.intel.com>
Date:	Thu, 2 Apr 2009 09:47:42 -0700
From:	Matthew Wilcox <willy@...ux.intel.com>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	jgarzik@...hat.com, David Woodhouse <David.Woodhouse@...el.com>
Subject: Re: [PATCH 3/5] ata: Add TRIM infrastructure

On Thu, Apr 02, 2009 at 08:32:56PM +0400, Sergei Shtylyov wrote:
> Matthew Wilcox wrote:
>
>>>   I wonder where to read about the word 169 and commnand 0x06... 
>>> what's it all about?
>
>> It's in d2015r1-ATAATAPI_Command_Set_-_2_ACS-2.pdf which can be found on
>> the t13 website.
>
>    But since neither ATA/PI-7 nor ATA/PI-8 mention neither the word nor  
> command, why your validity check requires only ATA/PI-7+ compliance?

Because there are ATA-7 devices which implement this feature.
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