From: James Bottomley <James.Bottomley@SteelEye.com>
To: Tejun Heo <htejun@gmail.com>
Cc: Jens Axboe <axboe@suse.de>,
SCSI Mailing List <linux-scsi@vger.kernel.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH scsi-misc-2.6 08/13] scsi: move request preps in other places into prep_fn()
Date: Thu, 31 Mar 2005 12:07:44 -0600 [thread overview]
Message-ID: <1112292464.5619.30.camel@mulgrave> (raw)
In-Reply-To: <20050331090647.94FFEC1E@htj.dyndns.org>
On Thu, 2005-03-31 at 18:08 +0900, Tejun Heo wrote:
> Move request preparations scattered in scsi_request_fn() and
> scsi_dispatch_cmd() into scsi_prep_fn().
>
> * CDB_SIZE check in scsi_dispatch_cmd()
> * SCSI-2 LUN preparation in scsi_dispatch_cmd()
> * scsi_init_cmd_errh() in scsi_request_fn()
>
> No invalid request reaches scsi_request_fn() anymore.
This one, I like, there's just one small problem:
You can't move scsi_init_cmd_errh() out of the request function path:
It's where we set up the sense buffer handling, so it has to be done
every time the command is prepared for execution (the prep function is
only called once)---think what happens if we turn a command around for
retry based on a sense indication.
So redo the patch and I'll put it in.
James
next prev parent reply other threads:[~2005-03-31 18:08 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-31 9:07 [PATCH scsi-misc-2.6 00/13] scsi: scsi_request_fn() rewrite & stuff Tejun Heo
2005-03-31 9:07 ` [PATCH scsi-misc-2.6 01/13] scsi: don't use blk_insert_request() for requeueing Tejun Heo
2005-03-31 10:12 ` Christoph Hellwig
2005-04-01 4:18 ` Tejun Heo
2005-03-31 17:53 ` James Bottomley
2005-04-01 5:01 ` Tejun Heo
2005-04-01 18:09 ` James Bottomley
2005-04-01 22:21 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 02/13] scsi: don't turn on REQ_SPECIAL on sgtable allocation failure Tejun Heo
2005-03-31 17:53 ` James Bottomley
2005-04-01 5:14 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 03/13] scsi: remove unused scsi_cmnd->internal_timeout field Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 04/13] scsi: remove meaningless volatile qualifiers from structure definitions Tejun Heo
2005-03-31 10:11 ` Christoph Hellwig
2005-04-01 5:15 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 05/13] scsi: remove a timer race from scsi_queue_insert() and cleanup timer Tejun Heo
2005-03-31 10:13 ` Christoph Hellwig
2005-04-01 5:15 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 06/13] scsi: remove meaningless scsi_cmnd->serial_number_at_timeout field Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 07/13] scsi: move error handling out of scsi_init_io() into scsi_prep_fn() Tejun Heo
2005-04-01 18:23 ` James Bottomley
2005-04-01 23:07 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 08/13] scsi: move request preps in other places into prep_fn() Tejun Heo
2005-03-31 10:20 ` Christoph Hellwig
2005-04-01 5:20 ` Tejun Heo
2005-03-31 18:07 ` James Bottomley [this message]
2005-04-01 5:25 ` Tejun Heo
2005-04-04 18:39 ` James Bottomley
2005-04-05 6:19 ` Tejun Heo
2005-04-05 14:20 ` James Bottomley
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 09/13] scsi: in scsi_prep_fn(), remove bogus comments & clean up Tejun Heo
2005-03-31 10:22 ` Christoph Hellwig
2005-03-31 18:02 ` James Bottomley
2005-04-01 5:29 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 10/13] scsi: rewrite scsi_request_fn() Tejun Heo
2005-03-31 11:14 ` Christoph Hellwig
2005-04-01 5:44 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 11/13] scsi: add reprep arg to scsi_requeue_command() and make it public Tejun Heo
2005-03-31 10:32 ` Christoph Hellwig
2005-04-01 5:35 ` Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 12/13] scsi: replace scsi_queue_insert() with scsi_requeue_command() Tejun Heo
2005-03-31 9:08 ` [PATCH scsi-misc-2.6 13/13] scsi: consolidate scsi_cmd_retry() calls in scsi_error.c Tejun Heo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1112292464.5619.30.camel@mulgrave \
--to=james.bottomley@steeleye.com \
--cc=axboe@suse.de \
--cc=htejun@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.