From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, target-devel@vger.kernel.org
Subject: Re: [PATCH 4/8] scsi: remove the cmd field from struct scsi_request
Date: Tue, 22 Feb 2022 22:31:20 -0500 [thread overview]
Message-ID: <yq1ley2b6rw.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20220222140443.589882-5-hch@lst.de> (Christoph Hellwig's message of "Tue, 22 Feb 2022 15:04:39 +0100")
Christoph,
> Change all submitters of SCSI passthrough request to store the CDB
> information directly in the scsi_cmnd, and while doing so allocate the
> full 32 bytes that cover all Linux supported SCSI hosts instead of
> requiring dynamic allocation for > 16 byte CDBs.
Been wanting to get rid of that for so long!
> On 64-bit systems this does not change the size of the scsi_cmnd at
> all, while on 32-bit systems it slightly increases it for now, but
> that increase will be made up by the removal of the remaining
> scsi_request fields.
Excellent!
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2022-02-23 3:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 14:04 remove struct scsi_request Christoph Hellwig
2022-02-22 14:04 ` [PATCH 1/8] bsg: don't include scsi_request.h in bsg-lib.h Christoph Hellwig
2022-02-22 18:33 ` Bart Van Assche
2022-02-22 14:04 ` [PATCH 2/8] target/pscsi: remove struct pscsi_plugin_task Christoph Hellwig
2022-02-22 14:04 ` [PATCH 3/8] scsi: don't memset the entire scsi_cmnd in scsi_init_command Christoph Hellwig
2022-02-23 12:21 ` John Garry
2022-02-23 12:39 ` Christoph Hellwig
2022-02-23 12:56 ` John Garry
2022-02-23 12:58 ` Christoph Hellwig
2022-02-23 20:16 ` Bart Van Assche
2022-02-24 6:52 ` Christoph Hellwig
2022-02-23 23:03 ` Bart Van Assche
2022-02-24 8:28 ` John Garry
2022-02-24 16:27 ` Christoph Hellwig
2022-02-24 16:38 ` John Garry
2022-02-22 14:04 ` [PATCH 4/8] scsi: remove the cmd field from struct scsi_request Christoph Hellwig
2022-02-23 3:31 ` Martin K. Petersen [this message]
2022-02-23 23:36 ` Bart Van Assche
2022-02-22 14:04 ` [PATCH 5/8] scsi: remove the sense and sense_len fields " Christoph Hellwig
2022-02-23 23:39 ` Bart Van Assche
2022-02-24 6:53 ` Christoph Hellwig
2022-02-22 14:04 ` [PATCH 6/8] scsi: move the resid_len field from struct scsi_request to struct scsi_cmnd Christoph Hellwig
2022-02-23 23:41 ` Bart Van Assche
2022-02-22 14:04 ` [PATCH 7/8] scsi: move the result " Christoph Hellwig
2022-02-23 23:43 ` Bart Van Assche
2022-02-22 14:04 ` [PATCH 8/8] scsi: remove struct scsi_request Christoph Hellwig
2022-02-23 23:48 ` Bart Van Assche
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