From: Elias Oltmanns <eo@nebensachen.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Peter Teoh <htmldeveloper@gmail.com>,
Maciej Rutecki <maciej.rutecki@gmail.com>,
Boaz Harrosh <bharrosh@panasas.com>,
USB Storage list <usb-storage@lists.one-eyed-alien.net>,
SCSI development list <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH] SCSI: erase invalid data returned by device
Date: Wed, 16 Jul 2008 16:39:39 +0200 [thread overview]
Message-ID: <87lk0151w4.fsf@denkblock.local> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0807161026340.2322-100000@iolanthe.rowland.org> (Alan Stern's message of "Wed, 16 Jul 2008 10:28:12 -0400 (EDT)")
Alan Stern <stern@rowland.harvard.edu> wrote:
> On Wed, 16 Jul 2008, Elias Oltmanns wrote:
>
>> Oh, I see. The name fooled me there, I suppose. So, the meaning of
>> req->data_len is inverted, as it were, when the LLDD performs the data
>> transfer, right?
>
> The inversion takes place in the midlayer, not in the LLDD. Take a
> look inside scsi_io_completion():
>
> if (blk_pc_request(req)) { /* SG_IO ioctl from block level */
> ...
> req->data_len = scsi_get_resid(cmd);
> }
Right, thanks for the hint.
Regards,
Elias
next prev parent reply other threads:[~2008-07-16 14:39 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <48328E81.2080504@panasas.com>
2008-05-20 14:23 ` [Re: Linux 2.6.26-rc2] Write protect on on Alan Stern
2008-06-03 15:02 ` Alan Stern
2008-06-13 16:57 ` Maciej Rutecki
2008-06-13 18:02 ` Alan Stern
2008-06-14 7:02 ` Maciej Rutecki
2008-06-20 20:22 ` Alan Stern
2008-06-20 20:56 ` James Bottomley
2008-06-20 21:46 ` Alan Stern
2008-06-20 22:09 ` James Bottomley
2008-06-21 2:17 ` Alan Stern
2008-06-23 15:04 ` Alan Stern
2008-06-24 3:25 ` Peter Teoh
2008-06-24 4:09 ` Peter Teoh
2008-06-24 18:03 ` [PATCH] SCSI: erase invalid data returned by device Alan Stern
2008-07-10 23:15 ` Cal Peake
2008-07-10 23:23 ` Linus Torvalds
2008-07-10 23:28 ` James Bottomley
2008-07-10 23:35 ` Linus Torvalds
2008-07-16 13:41 ` Elias Oltmanns
2008-07-16 13:55 ` James Bottomley
2008-07-16 14:12 ` Elias Oltmanns
2008-07-16 14:28 ` Alan Stern
2008-07-16 14:39 ` Elias Oltmanns [this message]
2008-07-16 14:01 ` Boaz Harrosh
2008-06-24 14:59 ` [Re: Linux 2.6.26-rc2] Write protect on on Alan Stern
2008-06-24 16:59 ` Maciej Rutecki
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