From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01943EE57CF for ; Fri, 8 Sep 2023 06:16:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237529AbjIHGQr (ORCPT ); Fri, 8 Sep 2023 02:16:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230228AbjIHGQq (ORCPT ); Fri, 8 Sep 2023 02:16:46 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4171B1BD9; Thu, 7 Sep 2023 23:16:42 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id E7AD4218E7; Fri, 8 Sep 2023 06:16:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1694153800; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cfiRMiLiljQPPOhhpNNBkApUXT20U3F3E5R68i/OMvk=; b=kRet6pO+tsSrG82Rwvv1LyygTDeAuDqcQvVQHNuT+wHctPZU1qp1ipdxRGQNUTuuY1iqEJ 25dcUERNuPvHqVGHDx0iGpZhZSguIeMPo8QeBUR3zRtYG6W3uNSzvp0d0AyXg2NbSjBdNO vRWDoikWhtc4OLXe1vKoakW8hOAqxUM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1694153800; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=cfiRMiLiljQPPOhhpNNBkApUXT20U3F3E5R68i/OMvk=; b=m+QzdY88ivA30UWFiCkWR71EfkwDvFkXyiaqpuqwEUnvy5x1HQwHdfItrKeBiB/MbEWhxw FhqKG5e9iwUHiNCQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 616D0131FD; 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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