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From: Jeff Garzik <jgarzik@pobox.com>
To: Jens Axboe <axboe@suse.de>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
	"Prakash K. Cheemplavam" <prakashkc@gmx.de>,
	marcush@onlinehome.de, linux-kernel@vger.kernel.org,
	eric_mudama@Maxtor.com
Subject: Re: Silicon Image 3112A SATA trouble
Date: Sun, 30 Nov 2003 12:48:50 -0500	[thread overview]
Message-ID: <3FCA2D82.3040606@pobox.com> (raw)
In-Reply-To: <20031130173127.GB6454@suse.de>

Jens Axboe wrote:
> On Sun, Nov 30 2003, Jeff Garzik wrote:
> 
>>Jens Axboe wrote:
>>
>>>>Well, the constraint we must satisfy is
>>>>
>>>>	sector_count % 15 != 1
>>>
>>>
>>>	(sector_count % 15 != 1) && (sector_count != 1)
>>>
>>>to be more precise :)
>>
>>
>>Thanks for the clarification, I did not know that.
>>
>>Avoiding sector_count==1 requires additional code :(  Valid requests 
>>might be a single sector.  With page-based blkdevs requests smaller than 
>>a page would certainly be infrequent, but are still possible, with bsg 
>>for example...
> 
> 
> You misread it... sector_count == 1 is fine, sector_count % 15 == 1 is
> ok when sector_count is 1 (it would have to be, or sector_count == 1
> would not be ok :)


Ahh, duh.  Thanks again.  Yeah, it makes sense since the bug arises from 
too-large Serial ATA data transactions on the SATA bus...

	Jeff




  reply	other threads:[~2003-11-30 17:49 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-25 13:59 Silicon Image 3112A SATA trouble Prakash K. Cheemplavam
2003-11-29 15:39 ` Prakash K. Cheemplavam
2003-11-29 16:38   ` Julien Oster
2003-11-29 16:54     ` Jeff Garzik
2003-11-29 17:07     ` Craig Bradney
2003-11-30  1:51       ` Prakash K. Cheemplavam
2003-11-29 16:56   ` Jeff Garzik
2003-11-29 17:41     ` Miquel van Smoorenburg
2003-11-29 18:39       ` Jeff Garzik
2003-11-29 20:24     ` Marcus Hartig
2003-11-30  2:00     ` Prakash K. Cheemplavam
2003-11-30 14:47       ` Bartlomiej Zolnierkiewicz
2003-11-30 15:52         ` Prakash K. Cheemplavam
2003-11-30 16:21           ` Bartlomiej Zolnierkiewicz
2003-11-30 16:25             ` Jens Axboe
2003-11-30 16:41               ` Jeff Garzik
2003-11-30 16:51                 ` Jens Axboe
2003-11-30 16:58                   ` Bartlomiej Zolnierkiewicz
2003-11-30 17:06                     ` Jeff Garzik
2003-11-30 17:10                       ` Jens Axboe
2003-11-30 17:22                         ` Jeff Garzik
2003-11-30 17:31                           ` Jens Axboe
2003-11-30 17:48                             ` Jeff Garzik [this message]
2003-11-30 17:56                         ` Vojtech Pavlik
2003-11-30 18:17                           ` Jens Axboe
2003-11-30 18:19                             ` Jeff Garzik
2003-11-30 18:22                               ` Jens Axboe
2003-11-30 18:31                                 ` Jeff Garzik
2003-11-30 19:44                                   ` Vojtech Pavlik
2003-11-30 21:05                                   ` Yaroslav Klyukin
2003-11-30 17:08                     ` Jens Axboe
2003-11-30 17:13                       ` Bartlomiej Zolnierkiewicz
2003-11-30 17:13                         ` Jens Axboe
2003-11-30 17:18                   ` Jeff Garzik
2003-11-30 17:28                     ` Jens Axboe
2003-11-30 17:41                       ` Jeff Garzik
2003-11-30 17:45                         ` Jens Axboe
2003-11-30 17:57                           ` Jeff Garzik
2003-11-30 18:21                             ` Jens Axboe
2003-11-30 19:04                               ` Jeff Garzik
2003-11-30 19:39                                 ` Jens Axboe
2003-11-30 20:35                                   ` Jeff Garzik
2003-12-01  9:02                                     ` Jens Axboe
2003-11-30 17:19             ` Prakash K. Cheemplavam
2003-11-30 18:07               ` Bartlomiej Zolnierkiewicz
2003-11-30 21:34                 ` Prakash K. Cheemplavam
2003-11-30 16:27         ` Jeff Garzik
2003-11-30 16:34           ` Bartlomiej Zolnierkiewicz
     [not found] <Pine.LNX.4.44.0311291453550.838-100000@coffee.psychology.mcmaster.ca>
2003-11-30 16:45 ` Jeff Garzik
2003-11-30 17:52 Luis Miguel García
2003-11-30 17:13 ` Craig Bradney
2003-11-30 18:27   ` Jeff Garzik
2003-11-30 18:41 Luis Miguel García
2003-11-30 21:15 ` Craig Bradney

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