From: Mikulas Patocka <mpatocka@redhat.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jens Axboe <jens.axboe@oracle.com>,
linux-kernel@vger.kernel.org, Neil Brown <neilb@suse.de>
Subject: Re: [PATCH 1/2] Avoid bio_endio recursion
Date: Thu, 3 Jul 2008 19:51:59 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0807031946580.21723@engineering.redhat.com> (raw)
In-Reply-To: <20080704000010.08db5daf@lxorguk.ukuu.org.uk>
On Fri, 4 Jul 2008, Alan Cox wrote:
>> SCSI. Even the NCQ commands are done via IDE registers, not SCSI command
>> block. It seems like someone wanted to save few weeks of coding by reusing
>
> Thats really a trivial question of encoding, in all but actual
> byte encoding it is SCSI. Once you look at SAS and ATAPI it's all the
> more clear.
For SAS and ATAPI you're right - that's SCSI.
But not for SATA disks. The only thing SCSI and SATA disk have common is
that they may process concurrently more requests. There's nothing else.
Mikulas
next prev parent reply other threads:[~2008-07-03 23:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-24 5:22 Mikulas Patocka
2008-06-24 6:08 ` Neil Brown
2008-06-24 14:36 ` Mikulas Patocka
2008-06-24 8:07 ` Jens Axboe
2008-06-24 14:27 ` Mikulas Patocka
2008-06-25 8:24 ` Jens Axboe
2008-06-26 0:13 ` Mikulas Patocka
2008-06-26 7:07 ` Jens Axboe
2008-07-02 4:09 ` Mikulas Patocka
2008-07-02 8:00 ` Alan Cox
2008-07-03 21:03 ` Mikulas Patocka
2008-07-02 8:25 ` Jens Axboe
2008-07-03 21:08 ` Mikulas Patocka
2008-07-03 21:04 ` Alan Cox
2008-07-03 22:54 ` Mikulas Patocka
2008-07-03 23:00 ` Alan Cox
2008-07-03 23:51 ` Mikulas Patocka [this message]
2008-07-03 23:44 ` Alan Cox
2008-07-04 3:26 ` Mikulas Patocka
2008-07-04 8:11 ` Alan Cox
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