From: Mike Christie <michaelc@cs.wisc.edu>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: "Dachepalli, Sudhir" <Sudhir.Dachepalli@lsi.com>,
Benny Halevy <bhalevy@panasas.com>,
Jens Axboe <jens.axboe@oracle.com>,
Boaz Harrosh <bharrosh@panasas.com>,
linux-scsi@vger.kernel.org
Subject: Re: Possible bug in scsi_lib.c:scsi_req_map_sg()
Date: Sun, 04 Mar 2007 11:04:13 -0600 [thread overview]
Message-ID: <45EAFC0D.3020701@cs.wisc.edu> (raw)
In-Reply-To: <1173027096.3372.62.camel@mulgrave.il.steeleye.com>
James Bottomley wrote:
> On Sun, 2007-03-04 at 10:21 -0600, Mike Christie wrote:
>> I think they get around this and other request settings that need
>> resetting by using scsi_execute_async. They will take the command, data
>> direction and buffer fields from the original scsi_cmnd, then pass those
>> on to scsi_ececute_async which would allocate a new request and then as
>> you know that new request gets sent to the scsi layer and looks like a
>> brand new request. So I misspoke above. It might be better to say they
>> are using it for routing what the other multipath layers would call
>> cloned commands.
>
> But actually, that's what I don't think they want to do.
Yeah, you are right. Proper cloning is the better way to go.
next prev parent reply other threads:[~2007-03-04 17:04 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-27 17:44 Possible bug in scsi_lib.c:scsi_req_map_sg() Boaz Harrosh
2006-11-27 19:13 ` Mike Christie
2006-11-27 19:27 ` Mike Christie
2006-11-27 21:52 ` Kai Makisara
2006-11-28 18:57 ` Jens Axboe
2006-11-29 9:30 ` Benny Halevy
2007-03-02 16:45 ` Dachepalli, Sudhir
2007-03-02 21:19 ` Mike Christie
2007-03-02 21:59 ` Mike Christie
2007-03-02 23:45 ` Dachepalli, Sudhir
2007-03-04 0:04 ` Mike Christie
2007-03-04 7:36 ` Dachepalli, Sudhir
2007-03-04 14:31 ` James Bottomley
2007-03-04 15:43 ` Mike Christie
2007-03-04 15:57 ` James Bottomley
2007-03-04 16:21 ` Mike Christie
2007-03-04 16:51 ` James Bottomley
2007-03-04 17:04 ` Mike Christie [this message]
2007-03-04 17:07 ` Mike Christie
2007-03-04 18:00 ` Dachepalli, Sudhir
2007-03-04 18:14 ` James Bottomley
2007-03-04 19:06 ` Dachepalli, Sudhir
2007-03-05 13:00 ` Christoph Hellwig
2007-03-05 13:02 ` Christoph Hellwig
2006-11-27 23:33 ` James Bottomley
2006-11-28 15:44 ` Boaz Harrosh
2006-11-28 17:30 ` Mike Christie
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