From: Jeff Garzik <jeff@garzik.org>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: rwheeler@redhat.com, snitzer@redhat.com, neilb@suse.de,
James.Bottomley@hansenpartnership.com, jens.axboe@oracle.com,
linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: [PATCH 13/13] libata: Media rotation rate and form factor heuristics
Date: Fri, 15 May 2009 14:17:45 -0400 [thread overview]
Message-ID: <4A0DB1C9.9090502@garzik.org> (raw)
In-Reply-To: <1242362435-11953-14-git-send-email-martin.petersen@oracle.com>
Martin K. Petersen wrote:
> From: Martin K. Petersen <martin.petersen@oracle.com>
>
> This patch provides new heuristics for parsing both the form factor and
> media rotation rate ATA IDENFITY words.
>
> The reported ATA version must be 7 or greater and the device must return
> values defined as valid in the standard. Only then are the
> characteristics reported to SCSI via the VPD B1 page.
>
> This seems like a reasonable compromise to me considering that we have
> been shipping several kernel releases that key off the rotation rate bit
> without any version checking whatsoever. With no complaints so far.
>
> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
> ---
> drivers/ata/libata-scsi.c | 15 ++++++---------
> include/linux/ata.h | 28 ++++++++++++++++++++++++++++
> 2 files changed, 34 insertions(+), 9 deletions(-)
applied, after dropping the NONROT bit as inappropriate for 2.6.30-rc
(which is where I applied the rest)
prev parent reply other threads:[~2009-05-15 18:18 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-15 4:40 I/O Topology v3 Martin K. Petersen
2009-05-15 4:40 ` [PATCH 01/13] block: Do away with the notion of hardsect_size Martin K. Petersen
2009-05-15 4:40 ` [PATCH 02/13] block: Use accessor functions for queue limits Martin K. Petersen
2009-05-31 15:51 ` Bartlomiej Zolnierkiewicz
2009-06-01 5:08 ` Martin K. Petersen
2009-06-01 5:15 ` Jens Axboe
2009-06-01 5:28 ` Martin K. Petersen
2009-05-15 4:40 ` [PATCH 03/13] block: Move queue limits to an embedded struct Martin K. Petersen
2009-05-18 18:50 ` Mike Snitzer
2009-05-18 18:52 ` Mike Snitzer
2009-05-19 16:46 ` Martin K. Petersen
2009-05-15 4:40 ` [PATCH 04/13] block: Expose stacked device queues in sysfs Martin K. Petersen
2009-05-15 4:40 ` [PATCH 05/13] block: Export I/O topology for block devices and partitions Martin K. Petersen
2009-05-18 17:57 ` Jens Axboe
2009-05-18 18:12 ` Mike Snitzer
2009-05-19 16:41 ` Martin K. Petersen
2009-05-19 18:15 ` Jens Axboe
2009-05-20 21:19 ` Martin K. Petersen
2009-05-22 7:30 ` Jens Axboe
2009-05-22 13:34 ` Martin K. Petersen
2009-05-22 18:16 ` Jens Axboe
2009-05-15 4:40 ` [PATCH 06/13] MD: Use new topology calls to indicate alignment and I/O sizes Martin K. Petersen
2009-05-15 4:40 ` [PATCH 07/13] block: Deprecate blk_queue_stack_limits Martin K. Petersen
2009-05-15 4:40 ` [PATCH 08/13] sd: Physical block size and alignment support Martin K. Petersen
2009-05-15 4:40 ` [PATCH 09/13] sd: Detect non-rotational devices Martin K. Petersen
2009-05-15 4:40 ` [PATCH 10/13] sd: Block limits VPD support Martin K. Petersen
2009-05-15 4:40 ` [PATCH 11/13] scsi_debug: Add support for physical block exponent and alignment Martin K. Petersen
2009-05-19 15:11 ` Douglas Gilbert
2009-05-15 4:40 ` [PATCH 12/13] libata: Report disk alignment and physical block size Martin K. Petersen
2009-05-15 18:17 ` Jeff Garzik
2009-05-15 4:40 ` [PATCH 13/13] libata: Media rotation rate and form factor heuristics Martin K. Petersen
2009-05-15 18:17 ` Jeff Garzik [this message]
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