From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@fb.com>
Cc: Mike Snitzer <snitzer@redhat.com>,
Junichi Nomura <j-nomura@ce.jp.nec.com>,
linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-raid@vger.kernel.org, dm-devel@redhat.com
Subject: split scsi passthrough fields out of struct request V2
Date: Wed, 25 Jan 2017 18:25:08 +0100 [thread overview]
Message-ID: <1485365126-23210-1-git-send-email-hch@lst.de> (raw)
Hi all,
this series splits the support for SCSI passthrough commands from the
main struct request used all over the block layer into a separate
scsi_request structure that drivers that want to support SCSI passthough
need to embedded as the first thing into their request-private data,
similar to how we handle NVMe passthrough commands.
To support this I've added support for that the private data after
request structure to the legacy request path instead, so that it can
be treated the same way as the blk-mq path. Compare to the current
scsi_cmnd allocator that actually is a major simplification.
Changes since V1:
- fix handling of a NULL sense pointer in __scsi_execute
- clean up handling of the flush flags in the block layer and MD
- additional small cleanup in dm-rq
next reply other threads:[~2017-01-25 17:25 UTC|newest]
Thread overview: 172+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-25 17:25 Christoph Hellwig [this message]
2017-01-25 17:25 ` [PATCH 01/18] block: add a op_is_flush helper Christoph Hellwig
2017-01-26 2:58 ` Martin K. Petersen
2017-01-26 22:38 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 02/18] md: cleanup bio op / flags handling in raid1_write_request Christoph Hellwig
2017-01-26 2:59 ` Martin K. Petersen
2017-01-26 23:18 ` Bart Van Assche
2017-01-26 23:18 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 03/18] block: fix elevator init check Christoph Hellwig
2017-01-26 3:01 ` Martin K. Petersen
2017-01-26 23:21 ` Bart Van Assche
2017-01-26 23:21 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 04/18] block: simplify blk_init_allocated_queue Christoph Hellwig
2017-01-26 3:02 ` Martin K. Petersen
2017-01-26 23:27 ` Bart Van Assche
2017-01-26 23:27 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 05/18] block: allow specifying size for extra command data Christoph Hellwig
2017-01-26 3:15 ` Martin K. Petersen
2017-01-27 16:12 ` Christoph Hellwig
2017-01-27 16:12 ` Christoph Hellwig
2017-01-27 17:21 ` Bart Van Assche
2017-01-27 17:21 ` Bart Van Assche
2017-01-27 17:26 ` Jens Axboe
2017-01-27 17:26 ` Jens Axboe
2017-01-27 17:30 ` Bart Van Assche
2017-01-27 17:30 ` Bart Van Assche
2017-01-27 17:33 ` Jens Axboe
2017-01-25 17:25 ` [PATCH 06/18] dm: remove incomple BLOCK_PC support Christoph Hellwig
2017-01-27 17:32 ` Bart Van Assche
2017-01-27 17:32 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 07/18] dm: always defer request allocation to the owner of the request_queue Christoph Hellwig
2017-01-27 16:34 ` Mike Snitzer
2017-01-27 16:34 ` Mike Snitzer
2017-01-27 16:36 ` Christoph Hellwig
2017-01-27 16:36 ` Christoph Hellwig
2017-01-27 16:44 ` Mike Snitzer
2017-01-27 16:44 ` Mike Snitzer
2017-01-25 17:25 ` [PATCH 08/18] scsi_dh_rdac: switch to scsi_execute_req_flags() Christoph Hellwig
2017-01-26 3:18 ` Martin K. Petersen
2017-01-25 17:25 ` [PATCH 09/18] scsi_dh_emc: " Christoph Hellwig
2017-01-26 3:19 ` Martin K. Petersen
2017-01-25 17:25 ` [PATCH 10/18] scsi_dh_hp_sw: " Christoph Hellwig
2017-01-26 3:20 ` Martin K. Petersen
2017-01-26 3:20 ` Martin K. Petersen
2017-01-25 17:25 ` [PATCH 11/18] scsi: remove gfp_flags member in scsi_host_cmd_pool Christoph Hellwig
2017-01-26 3:21 ` Martin K. Petersen
2017-01-27 17:38 ` Bart Van Assche
2017-01-27 17:38 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 12/18] scsi: respect unchecked_isa_dma for blk-mq Christoph Hellwig
2017-01-26 3:23 ` Martin K. Petersen
2017-01-27 17:45 ` Bart Van Assche
2017-01-27 17:45 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 13/18] scsi: remove scsi_cmd_dma_pool Christoph Hellwig
2017-01-26 3:24 ` Martin K. Petersen
2017-01-27 17:51 ` Bart Van Assche
2017-01-27 17:51 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 14/18] scsi: remove __scsi_alloc_queue Christoph Hellwig
2017-01-26 3:25 ` Martin K. Petersen
2017-01-27 17:58 ` Bart Van Assche
2017-01-27 17:58 ` Bart Van Assche
2017-01-28 8:23 ` hch
2017-01-25 17:25 ` [PATCH 15/18] scsi: allocate scsi_cmnd structures as part of struct request Christoph Hellwig
2017-01-26 3:30 ` Martin K. Petersen
2017-01-27 18:39 ` Bart Van Assche
2017-01-27 18:39 ` Bart Van Assche
2017-01-28 8:25 ` hch
2017-01-28 8:25 ` hch
2017-01-25 17:25 ` [PATCH 16/18] block/bsg: move queue creation into bsg_setup_queue Christoph Hellwig
2017-01-27 18:48 ` Bart Van Assche
2017-01-27 18:48 ` Bart Van Assche
2017-01-25 17:25 ` [PATCH 17/18] block: split scsi_request out of struct request Christoph Hellwig
2017-01-25 17:25 ` [PATCH 18/18] block: don't assign cmd_flags in __blk_rq_prep_clone Christoph Hellwig
2017-01-26 3:31 ` Martin K. Petersen
2017-01-26 18:29 ` split scsi passthrough fields out of struct request V2 Bart Van Assche
2017-01-26 18:29 ` Bart Van Assche
2017-01-26 18:44 ` Jens Axboe
2017-01-26 18:52 ` Bart Van Assche
2017-01-26 18:52 ` Bart Van Assche
2017-01-26 18:57 ` Jens Axboe
2017-01-26 18:59 ` hch
2017-01-26 19:01 ` Jens Axboe
2017-01-26 19:01 ` Jens Axboe
2017-01-26 20:47 ` [dm-devel] " Bart Van Assche
2017-01-26 20:54 ` Jens Axboe
2017-01-26 20:54 ` [dm-devel] " Jens Axboe
2017-01-26 21:01 ` Bart Van Assche
2017-01-26 21:01 ` Bart Van Assche
2017-01-26 21:12 ` Jens Axboe
2017-01-26 21:12 ` [dm-devel] " Jens Axboe
2017-01-26 21:47 ` Bart Van Assche
2017-01-26 21:47 ` [dm-devel] " Bart Van Assche
2017-01-26 21:51 ` Jens Axboe
2017-01-26 21:51 ` [dm-devel] " Jens Axboe
2017-01-26 23:14 ` Bart Van Assche
2017-01-26 23:14 ` Bart Van Assche
2017-01-26 23:26 ` Jens Axboe
2017-01-26 23:26 ` Jens Axboe
2017-01-26 23:26 ` [dm-devel] " Jens Axboe
2017-01-26 23:47 ` Bart Van Assche
2017-01-26 23:47 ` [dm-devel] " Bart Van Assche
2017-01-26 23:50 ` Jens Axboe
2017-01-27 0:33 ` Jens Axboe
2017-01-27 0:33 ` [dm-devel] " Jens Axboe
2017-01-27 0:38 ` Bart Van Assche
2017-01-27 0:38 ` Bart Van Assche
2017-01-27 0:41 ` Jens Axboe
2017-01-27 1:15 ` Bart Van Assche
2017-01-27 1:15 ` [dm-devel] " Bart Van Assche
2017-01-27 1:22 ` Jens Axboe
2017-01-27 1:22 ` [dm-devel] " Jens Axboe
2017-01-27 6:40 ` Jens Axboe
2017-01-27 8:04 ` Jens Axboe
2017-01-27 8:04 ` [dm-devel] " Jens Axboe
2017-01-27 16:52 ` Bart Van Assche
2017-01-27 16:52 ` [dm-devel] " Bart Van Assche
2017-01-27 16:56 ` Jens Axboe
2017-01-27 16:56 ` [dm-devel] " Jens Axboe
2017-01-27 17:03 ` Bart Van Assche
2017-01-27 17:03 ` [dm-devel] " Bart Van Assche
2017-01-31 1:12 ` Bart Van Assche
2017-01-31 1:12 ` Bart Van Assche
2017-01-31 1:38 ` Jens Axboe
2017-01-31 1:38 ` Jens Axboe
2017-01-31 4:13 ` Jens Axboe
2017-01-31 4:13 ` [dm-devel] " Jens Axboe
2017-01-31 21:35 ` Bart Van Assche
2017-01-31 21:35 ` Bart Van Assche
2017-01-31 21:55 ` Bart Van Assche
2017-01-31 21:55 ` Bart Van Assche
2017-01-31 21:58 ` Jens Axboe
2017-02-01 1:01 ` Bart Van Assche
2017-02-01 6:38 ` Jens Axboe
2017-02-01 16:46 ` Bart Van Assche
2017-02-01 17:13 ` Jens Axboe
2017-02-01 17:28 ` Bart Van Assche
2017-02-01 19:21 ` Bart Van Assche
2017-02-01 22:01 ` Bart Van Assche
2017-02-02 17:27 ` Bart Van Assche
2017-02-02 18:33 ` Mike Snitzer
2017-02-02 18:43 ` Bart Van Assche
2017-02-02 19:13 ` Mike Snitzer
2017-02-02 19:46 ` Bart Van Assche
2017-02-02 21:04 ` Mike Snitzer
2017-02-02 21:10 ` Mike Snitzer
2017-02-03 0:20 ` Bart Van Assche
2017-02-03 0:42 ` Mike Snitzer
2017-02-02 22:38 ` Bart Van Assche
2017-01-27 17:02 ` [dm-devel] " Bart Van Assche
2017-01-27 17:02 ` Bart Van Assche
2017-01-27 16:11 ` Jens Axboe
2017-01-27 16:11 ` Jens Axboe
2017-01-27 16:17 ` Christoph Hellwig
2017-01-27 16:17 ` Christoph Hellwig
2017-01-27 16:21 ` Jens Axboe
2017-01-27 16:21 ` Jens Axboe
2017-01-27 16:23 ` Christoph Hellwig
2017-01-27 16:23 ` Christoph Hellwig
2017-01-27 16:27 ` Jens Axboe
2017-01-27 16:27 ` Jens Axboe
2017-01-27 16:34 ` Christoph Hellwig
2017-01-27 16:34 ` Christoph Hellwig
2017-01-27 16:38 ` Jens Axboe
2017-01-27 16:38 ` Jens Axboe
2017-01-27 16:42 ` Christoph Hellwig
2017-01-27 16:42 ` Christoph Hellwig
2017-01-27 16:58 ` Jens Axboe
2017-01-27 16:58 ` Jens Axboe
2017-01-27 21:27 ` Bart Van Assche
2017-01-27 21:27 ` Bart Van Assche
2017-01-28 8:29 ` hch
2017-01-30 6:58 ` Hannes Reinecke
2017-01-30 6:58 ` Hannes Reinecke
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