From: Bart Van Assche <Bart.VanAssche@sandisk.com>
To: "hch@lst.de" <hch@lst.de>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"James.Bottomley@HansenPartnership.com"
<James.Bottomley@HansenPartnership.com>,
"hare@suse.com" <hare@suse.com>,
"kys@microsoft.com" <kys@microsoft.com>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
"longli@microsoft.com" <longli@microsoft.com>
Subject: Re: [PATCH 15/18] scsi: storvsc: Initialize driver-private command before using it
Date: Mon, 22 May 2017 17:15:37 +0000 [thread overview]
Message-ID: <1495473336.1017.1.camel@sandisk.com> (raw)
In-Reply-To: <20170521065134.GF12891@lst.de>
On Sun, 2017-05-21 at 08:51 +0200, Christoph Hellwig wrote:
> On Fri, May 19, 2017 at 11:30:13AM -0700, Bart Van Assche wrote:
> > The storvsc driver is the only SCSI LLD that uses driver-private
> > command data and that does not zero-initialize that data before
> > reading it. Make this driver consistent with the other SCSI LLDs
> > that use driver-private command data.
>
> Well. Either we add zeroing to storvsc and remove it from common
> code, or we remove the zeroing from the drivers.
>
> We shouldn't do both. Given that we already zero the remaining
> command it seems to me like keeping the zeroing in common code
> would be preferred, but I'm open to discussion.
Hello Christoph,
I will remove the code that zeroes driver-private command data from the other
SCSI LLDs and add it to the scsi-sq request preparation code path.
Bart.
next prev parent reply other threads:[~2017-05-22 17:16 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-19 18:29 [PATCH 00/18] Unify and simplify SCSI request initialization Bart Van Assche
2017-05-19 18:29 ` [PATCH 01/18] block: Introduce blk_queue_cmd_size() Bart Van Assche
2017-05-21 6:54 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 02/18] bsg: Check private request size before attaching to a queue Bart Van Assche
2017-05-21 6:32 ` Christoph Hellwig
2017-05-21 14:33 ` Bart Van Assche
2017-05-22 7:49 ` hch
2017-05-19 18:30 ` [PATCH 03/18] pktcdvd: " Bart Van Assche
2017-05-19 18:30 ` [PATCH 04/18] cdrom: " Bart Van Assche
2017-05-19 18:30 ` [PATCH 05/18] nfsd: Check private request size before submitting a SCSI request Bart Van Assche
2017-05-19 19:03 ` J . Bruce Fields
2017-05-19 18:30 ` [PATCH 06/18] scsi: Make scsi_ioctl_reset() pass the request queue pointer to blk_rq_init() Bart Van Assche
2017-05-21 6:50 ` Christoph Hellwig
2017-05-21 16:41 ` Bart Van Assche
2017-05-22 6:06 ` Hannes Reinecke
2017-05-22 7:54 ` hch
2017-05-22 8:46 ` Hannes Reinecke
2017-05-22 12:48 ` hch
2017-05-22 12:56 ` Hannes Reinecke
2017-05-22 13:00 ` hch
2017-05-19 18:30 ` [PATCH 07/18] block: Introduce request_queue.initialize_rq_fn() Bart Van Assche
2017-05-21 6:34 ` Christoph Hellwig
2017-05-22 17:07 ` Bart Van Assche
2017-05-19 18:30 ` [PATCH 08/18] block: Make scsi_req_init() calls implicit Bart Van Assche
2017-05-21 6:42 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 09/18] scsi: Change argument type of scsi_req_init() Bart Van Assche
2017-05-21 6:43 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 10/18] scsi: Only add commands to the device command list if required by the LLD Bart Van Assche
2017-05-21 6:44 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 11/18] scsi: Move most of scsi_init_command() into scsi_initialize_rq() Bart Van Assche
2017-05-21 6:45 ` Christoph Hellwig
2017-05-21 6:46 ` Christoph Hellwig
2017-05-21 6:47 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 12/18] scsi: Inline scsi_init_command() Bart Van Assche
2017-05-21 6:47 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 13/18] scsi: Move sense buffer pointer initialization into scsi_initialize_rq() Bart Van Assche
2017-05-21 6:48 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 14/18] scsi: Make scsi_initialize_rq() zero the entire struct scsi_cmnd Bart Van Assche
2017-05-21 6:49 ` Christoph Hellwig
2017-05-22 17:12 ` Bart Van Assche
2017-05-19 18:30 ` [PATCH 15/18] scsi: storvsc: Initialize driver-private command before using it Bart Van Assche
2017-05-21 6:51 ` Christoph Hellwig
2017-05-22 17:15 ` Bart Van Assche [this message]
2017-05-19 18:30 ` [PATCH 16/18] scsi-mq: Make behavior scsi_mq_prep_fn() closer to that of scsi_prep_fn() Bart Van Assche
2017-05-21 6:52 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 17/18] scsi: Consolidate more initialization code Bart Van Assche
2017-05-21 6:52 ` Christoph Hellwig
2017-05-19 18:30 ` [PATCH 18/18] scsi_setup_fs_cmnd(): Call scsi_req_init() instead of open-coding it Bart Van Assche
2017-05-21 6:52 ` Christoph Hellwig
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