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Fri, 8 Sep 2023 06:16:40 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id baswFki8+mQibgAAMHmgww (envelope-from ); Fri, 08 Sep 2023 06:16:40 +0000 Message-ID: <7bdf32f4-6fac-4ed4-a11f-b6dfe1c45177@suse.de> Date: Fri, 8 Sep 2023 08:16:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v15 12/12] null_blk: add support for copy offload Content-Language: en-US To: Nitesh Shetty , Jens Axboe , Jonathan Corbet , Alasdair Kergon , Mike Snitzer , dm-devel@redhat.com, Keith Busch , Christoph Hellwig , Sagi Grimberg , Chaitanya Kulkarni , Alexander Viro , Christian Brauner Cc: martin.petersen@oracle.com, mcgrof@kernel.org, gost.dev@samsung.com, Damien Le Moal , Anuj Gupta , Vincent Fu , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org References: <20230906163844.18754-1-nj.shetty@samsung.com> <20230906163844.18754-13-nj.shetty@samsung.com> From: Hannes Reinecke In-Reply-To: <20230906163844.18754-13-nj.shetty@samsung.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230907_231642_366625_AB0B4867 X-CRM114-Status: GOOD ( 11.49 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On 9/6/23 18:38, Nitesh Shetty wrote: > Implementation is based on existing read and write infrastructure. > copy_max_bytes: A new configfs and module parameter is introduced, which > can be used to set hardware/driver supported maximum copy limit. > Only request based queue mode will support for copy offload. > Added tracefs support to copy IO tracing. > > Suggested-by: Damien Le Moal > Signed-off-by: Anuj Gupta > Signed-off-by: Nitesh Shetty > Signed-off-by: Vincent Fu > --- > Documentation/block/null_blk.rst | 5 ++ > drivers/block/null_blk/main.c | 97 ++++++++++++++++++++++++++++++- > drivers/block/null_blk/null_blk.h | 1 + > drivers/block/null_blk/trace.h | 23 ++++++++ > 4 files changed, 123 insertions(+), 3 deletions(-) > Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), Geschäftsführer: Ivo Totev, Andrew Myers, Andrew McDonald, Martje Boudien Moerman