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From: Christoph Hellwig <hch@lst.de>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@fb.com>,
	linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
	dm-devel@redhat.com
Subject: Re: RFC: split scsi passthrough fields out of struct request
Date: Thu, 12 Jan 2017 08:59:55 +0100	[thread overview]
Message-ID: <20170112075952.GC7567@lst.de> (raw)
In-Reply-To: <20170111224142.GA19238@redhat.com>

On Wed, Jan 11, 2017 at 05:41:42PM -0500, Mike Snitzer wrote:
> I removed blk-mq on request_fn paths support because it was one of the
> permutations that I felt least useful/stable (see commit c5248f79f3 "dm:
> remove support for stacking dm-mq on .request_fn device(s)")
> 
> As for all of the different IO paths.  I've always liked the idea of
> blk-mq ruling the world.  With Jens' blk-mq IO scheduling advances maybe
> we're closer!

That removed blk-mq on top of request_fn code would do the right thing
for this series if it entirely replaced the old request_fn code in dm-mpath.
(as would the new bio code for that matter)

      reply	other threads:[~2017-01-12  7:59 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-10 15:06 RFC: split scsi passthrough fields out of struct request Christoph Hellwig
2017-01-10 15:06 ` [PATCH 01/15] virtio_blk: avoid DMA to stack for the sense buffer Christoph Hellwig
2017-01-11  8:26   ` Johannes Thumshirn
2017-01-11  8:26     ` Johannes Thumshirn
2017-01-11  8:43     ` Christoph Hellwig
2017-01-10 15:06 ` [PATCH 02/15] nvme-rdma: fix nvme_rdma_queue_is_ready Christoph Hellwig
2017-01-10 15:06 ` [PATCH 03/15] block: simplify blk_init_allocated_queue Christoph Hellwig
2017-01-10 15:06 ` [PATCH 04/15] block: allow specifying size for extra command data Christoph Hellwig
2017-01-10 15:06 ` [PATCH 05/15] dm: remove incomple BLOCK_PC support Christoph Hellwig
2017-01-12  1:09   ` Mike Snitzer
2017-01-12  8:00     ` Christoph Hellwig
2017-01-12 22:28       ` Mike Snitzer
2017-01-13  8:14         ` Christoph Hellwig
2017-01-13  8:14           ` Christoph Hellwig
2017-01-10 15:06 ` [PATCH 06/15] scsi_dh_rdac: switch to scsi_execute_req_flags() Christoph Hellwig
2017-01-10 15:06 ` [PATCH 07/15] scsi_dh_emc: " Christoph Hellwig
2017-01-10 15:06 ` [PATCH 08/15] scsi_dh_hp_sw: " Christoph Hellwig
2017-01-10 15:06 ` [PATCH 09/15] scsi: remove gfp_flags member in scsi_host_cmd_pool Christoph Hellwig
2017-01-10 15:06 ` [PATCH 10/15] scsi: respect unchecked_isa_dma for blk-mq Christoph Hellwig
2017-01-10 15:06 ` [PATCH 11/15] scsi: remove scsi_cmd_dma_pool Christoph Hellwig
2017-01-10 15:06 ` [PATCH 12/15] scsi: remove __scsi_alloc_queue Christoph Hellwig
2017-01-10 15:06 ` [PATCH 13/15] scsi: allocate scsi_cmnd structures as part of struct request Christoph Hellwig
2017-01-10 15:06 ` [PATCH 14/15] block/bsg: move queue creation into bsg_setup_queue Christoph Hellwig
2017-01-11  8:42   ` Johannes Thumshirn
2017-01-11  8:42     ` Johannes Thumshirn
2017-01-11  8:45     ` Christoph Hellwig
2017-01-11  8:56       ` Johannes Thumshirn
2017-01-11  8:56         ` Johannes Thumshirn
2017-01-11  8:59         ` Christoph Hellwig
2017-01-11  8:59       ` Hannes Reinecke
2017-01-11  8:59         ` Hannes Reinecke
2017-01-11  9:01         ` Christoph Hellwig
2017-01-11  9:37           ` Hannes Reinecke
2017-01-11  9:37             ` Hannes Reinecke
2017-01-11 22:08             ` Mike Snitzer
2017-01-11 22:01       ` Mike Snitzer
2017-01-12  7:57         ` Christoph Hellwig
2017-01-10 15:06 ` [PATCH 15/15] block: split scsi_request out of struct request Christoph Hellwig
2017-01-12  3:59   ` Jens Axboe
2017-01-12  3:59     ` Jens Axboe
2017-01-11 22:41 ` RFC: split scsi passthrough fields " Mike Snitzer
2017-01-12  7:59   ` Christoph Hellwig [this message]

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