From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Hannes Reinecke <hare@suse.de>
Cc: Bart Van Assche <bvanassche@acm.org>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Christoph Hellwig <hch@lst.de>,
James Bottomley <james.bottomley@hansenpartnership.com>,
linux-scsi@vger.kernel.org, John Garry <john.garry@huawei.com>
Subject: Re: [PATCH 02/15] scsi: add scsi_{get,put}_internal_cmd() helper
Date: Mon, 29 Nov 2021 23:17:19 -0500 [thread overview]
Message-ID: <yq1y256xp5b.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <239804d1-aae7-63ba-c3bf-ca1dd523df6c@suse.de> (Hannes Reinecke's message of "Sun, 28 Nov 2021 13:44:53 +0100")
Hannes,
> I have oriented myself at __scsi_execute(), which also has
> 'data_direction' as an integer. Presumably to avoid header clutter.
> Martin?
Just a vestige from ancient times. I really hate scsi_execute() and its
10,000 randomly ordered arguments. The more sanity checking we have in
that department, the better.
At some point I proposed having scsi_execute() take a single struct as
argument to get better input validation. I've lost count how many things
have been broken because of misordered arguments to this function.
Backporting patches almost inevitably causes regressions because of this
interface.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2021-11-30 4:17 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-25 15:10 [PATCHv9 00/15] scsi: enabled reserved commands for LLDDs Hannes Reinecke
2021-11-25 15:10 ` [PATCH 01/15] scsi: allocate host device Hannes Reinecke
2021-11-25 23:16 ` Bart Van Assche
2021-11-27 16:21 ` Hannes Reinecke
2021-11-26 2:47 ` chenxiang (M)
2021-11-27 16:52 ` Hannes Reinecke
2021-11-29 10:59 ` Hannes Reinecke
2021-11-25 15:10 ` [PATCH 02/15] scsi: add scsi_{get,put}_internal_cmd() helper Hannes Reinecke
2021-11-26 9:58 ` John Garry
2021-11-26 23:13 ` Bart Van Assche
2021-11-28 10:36 ` Hannes Reinecke
2021-12-06 17:15 ` John Garry
2021-12-06 17:46 ` Hannes Reinecke
2021-12-07 12:50 ` John Garry
2021-11-26 23:12 ` Bart Van Assche
2021-11-28 12:44 ` Hannes Reinecke
2021-11-30 4:17 ` Martin K. Petersen [this message]
2021-11-30 6:51 ` Hannes Reinecke
2021-11-28 3:33 ` Bart Van Assche
2021-11-28 13:05 ` Hannes Reinecke
2021-11-25 15:10 ` [PATCH 03/15] scsi: implement reserved command handling Hannes Reinecke
2021-11-26 23:15 ` Bart Van Assche
2021-11-29 19:15 ` Asutosh Das (asd)
2021-11-25 15:10 ` [PATCH 04/15] hpsa: move hpsa_hba_inquiry after scsi_add_host() Hannes Reinecke
2021-11-25 15:10 ` [PATCH 05/15] hpsa: use reserved commands Hannes Reinecke
2021-11-25 15:10 ` [PATCH 06/15] hpsa: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
2021-11-26 9:33 ` John Garry
2021-11-27 17:00 ` Hannes Reinecke
2021-11-25 15:10 ` [PATCH 07/15] hpsa: drop refcount field from CommandList Hannes Reinecke
2021-11-25 15:10 ` [PATCH 08/15] aacraid: return valid status from aac_scsi_cmd() Hannes Reinecke
2021-11-25 15:10 ` [PATCH 09/15] aacraid: don't bother with setting SCp.Status Hannes Reinecke
2021-11-25 15:10 ` [PATCH 10/15] aacraid: move scsi_add_host() Hannes Reinecke
2021-11-25 15:10 ` [PATCH 11/15] aacraid: move container ID into struct fib Hannes Reinecke
2021-11-25 15:10 ` [PATCH 12/15] aacraid: fsa_dev pointer is always valid Hannes Reinecke
2021-11-25 15:10 ` [PATCH 13/15] aacraid: store callback in scsi_cmnd.host_scribble Hannes Reinecke
2021-11-25 15:10 ` [PATCH 14/15] aacraid: use scsi_get_internal_cmd() Hannes Reinecke
2021-11-25 15:10 ` [PATCH 15/15] aacraid: use scsi_host_busy_iter() to traverse outstanding commands Hannes Reinecke
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