From: Jeff Garzik <jgarzik@pobox.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org,
"Martin K. Petersen" <mkp@mkp.net>, Matthew Wilcox <willy@wil.cx>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, Mark Lord <liml@rtr.ca>
Subject: Re: [PATCH V2] libata: add TRIM support
Date: Thu, 19 Nov 2009 18:46:12 -0500 [thread overview]
Message-ID: <4B05D8C4.4000804@pobox.com> (raw)
In-Reply-To: <20091117150047.GB10748@infradead.org>
On 11/17/2009 10:00 AM, Christoph Hellwig wrote:
> Add support for the ATA TRIM command in libata. We translate a WRITE SAME 16
> command with the unmap bit set into an ATA TRIM command and export enough
> information in READ CAPACITY 16 and the block limits EVPD page so that the new
> SCSI layer discard support will driver this for us.
>
> Note that I hardcode the WRITE_SAME_16 opcode for now as the patch to introduce
> the symbolic is not in 2.6.32 yet but only in the SCSI tree - as soon as it is
> merged we can fix it up to properly use the symbolic name.
>
> Signed-off-by: Christoph Hellwig<hch@lst.de>
applied
prev parent reply other threads:[~2009-11-19 23:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-17 15:00 [PATCH V2] libata: add TRIM support Christoph Hellwig
2009-11-17 22:01 ` Jeff Garzik
2009-11-19 3:36 ` Mark Lord
2009-11-19 23:46 ` Jeff Garzik [this message]
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