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From: Christoph Hellwig <hch@lst.de>
To: Chaitanya Kulkarni <kch@nvidia.com>
Cc: linux-block@vger.kernel.org, linux-raid@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	axboe@kernel.dk, agk@redhat.com, song@kernel.org,
	djwong@kernel.org, kbusch@kernel.org, hch@lst.de,
	sagi@grimberg.me, jejb@linux.ibm.com, martin.petersen@oracle.com,
	viro@zeniv.linux.org.uk, javier@javigon.com,
	johannes.thumshirn@wdc.com, bvanassche@acm.org,
	dongli.zhang@oracle.com, ming.lei@redhat.com,
	willy@infradead.org, jefflexu@linux.alibaba.com,
	josef@toxicpanda.com, clm@fb.com, dsterba@suse.com,
	jack@suse.com, tytso@mit.edu, adilger.kernel@dilger.ca,
	jlayton@kernel.org, idryomov@gmail.com,
	danil.kipnis@cloud.ionos.com, ebiggers@google.com,
	jinpu.wang@cloud.ionos.com
Subject: Re: [PATCH 4/6] nvmet: add Verify emulation support for bdev-ns
Date: Tue, 5 Jul 2022 10:35:55 +0200	[thread overview]
Message-ID: <20220705083555.GC19123@lst.de> (raw)
In-Reply-To: <20220630091406.19624-5-kch@nvidia.com>

On Thu, Jun 30, 2022 at 02:14:04AM -0700, Chaitanya Kulkarni wrote:
> Not all devices can support verify requests which can be mapped to
> the controller specific command. This patch adds a way to emulate
> REQ_OP_VERIFY for NVMeOF block device namespace. We add a new
> workqueue to offload the emulation.

How is this an "emulation"?

Also why do we need the workqueue offloads?  I can't see any good
reason to not just simply submit the bio asynchronously like all the
other bios submitted by the block device backend.

  reply	other threads:[~2022-07-05  8:36 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-30  9:14 [PATCH 0/6] block: add support for REQ_OP_VERIFY Chaitanya Kulkarni
2022-06-30  9:14 ` [PATCH 1/6] " Chaitanya Kulkarni
2022-06-30 16:18   ` Darrick J. Wong
2022-07-05 16:50     ` Chaitanya Kulkarni
2022-07-05 17:57       ` Darrick J. Wong
2022-07-06  1:32         ` Chaitanya Kulkarni
2022-07-05  8:34   ` Christoph Hellwig
2022-07-05 23:55     ` Chaitanya Kulkarni
2022-06-30  9:14 ` [PATCH 2/6] nvme: add support for the Verify command Chaitanya Kulkarni
2022-06-30 16:24   ` Keith Busch
2022-07-05  8:34     ` Christoph Hellwig
2022-07-05 23:56       ` Chaitanya Kulkarni
2022-06-30  9:14 ` [PATCH 3/6] nvmet: add Verify command support for bdev-ns Chaitanya Kulkarni
2022-06-30  9:14 ` [PATCH 4/6] nvmet: add Verify emulation " Chaitanya Kulkarni
2022-07-05  8:35   ` Christoph Hellwig [this message]
2022-07-06  0:00     ` Chaitanya Kulkarni
2022-06-30  9:14 ` [PATCH 5/6] nvmet: add verify emulation support for file-ns Chaitanya Kulkarni
2022-07-05  8:36   ` Christoph Hellwig
2022-07-06  0:06     ` Chaitanya Kulkarni
2022-06-30  9:14 ` [PATCH 6/6] null_blk: add REQ_OP_VERIFY support Chaitanya Kulkarni
2022-07-05  8:38 ` [PATCH 0/6] block: add support for REQ_OP_VERIFY Christoph Hellwig
2022-07-05 16:47   ` Chaitanya Kulkarni
2022-07-06 17:42 ` Matthew Wilcox
2022-07-13  9:14   ` Chaitanya Kulkarni
2022-07-13  9:36     ` Johannes Thumshirn
2022-07-13 12:17     ` Matthew Wilcox
2022-07-13 14:04       ` Keith Busch
2022-12-01 18:12   ` Chaitanya Kulkarni
2022-12-01 19:39     ` Matthew Wilcox
2022-12-02  7:16       ` Hannes Reinecke
2022-12-02 14:58         ` Keith Busch
2022-12-02 17:33           ` Clay Mayers
2022-12-02 18:58             ` Keith Busch
2022-12-09  4:52             ` Martin K. Petersen
2022-12-10 13:06               ` Carlos Carvalho
2022-12-12  6:30                 ` hch
2022-12-03  4:19           ` Javier González
2022-12-04 20:29             ` Keith Busch
2022-12-08 20:06               ` Javier González
2022-12-08 20:02             ` Matthew Wilcox
2022-12-02  7:13     ` Hannes Reinecke

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