From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 008.lax.mailroute.net (008.lax.mailroute.net [199.89.1.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D90E5232373; Tue, 10 Dec 2024 21:58:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.1.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733867937; cv=none; b=DJ3z29B7gXqLKN84tAbMpRC15UUm29N2jq0UzC820vUBdAG/8Lu25I+PI9pPekU01+E8J8b95dLVAicVGYeNUMgeuYD3qUCMdZw086wrMyrIC2650r1Gv0xg1BBp83KY7s3NUrUABtVEEbl66d5KoTG8yIN+TLmMGfHpOvp+tO0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733867937; c=relaxed/simple; bh=UMPKRvLE/QQ5urEMkscdu5mz7RjqxapRnt91HnvSfRk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=WYC8BSCs5vVpWqHC4VuKlYdRw2k/pXq4Gwta7clHBkiW55glnL7f5w40emxYOHsJyT0TGtBmA4/bAa96la4YyKJN0ksygmaxxjDphBTJzRY+IA2TmeU1ibmwaCbF8uKGPaQNaPuG5o4sPk0WkjtuG1hMzTSzuk+Uaiv5tJ9Min0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=tMCA32fv; arc=none smtp.client-ip=199.89.1.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="tMCA32fv" Received: from localhost (localhost [127.0.0.1]) by 008.lax.mailroute.net (Postfix) with ESMTP id 4Y7CL7128Qz6Cl4Ph; Tue, 10 Dec 2024 21:58:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:content-type:content-type:in-reply-to :from:from:content-language:references:subject:subject :user-agent:mime-version:date:date:message-id:received:received; s=mr01; t=1733867915; x=1736459916; bh=UMPKRvLE/QQ5urEMkscdu5mz 7RjqxapRnt91HnvSfRk=; b=tMCA32fv2C7drEaWNjV7OlmjiTUE1Jwpz1HdJrFT DM0W9B1dfiXNGJxiycfCASwnzZaeUDrqagCcJWI8nxwp1EOG0batI29+/QZo9VDM LyNaOGM7xTwKNqaUK6PZ06lrIt4Q3yH5lK68FuUl1kz3x56n1/+1laEEN/ZMsSNX tbJ8lJY6/NDCYfrlmkZAuqimyIa+kGovBvI3hUJPiIWQssGG9lwkOVGSpcB1mLHj fxdNAfwESyPELGpMs85DAsyD/ineFXbI2U3TAPnHhBURBgOFRMFHL0arK8Dvq57Q xOPOqlyEyRUhE5CtyKGYC+iG0kCBY/I7cD7ErE5b/8qN1A== X-Virus-Scanned: by MailRoute Received: from 008.lax.mailroute.net ([127.0.0.1]) by localhost (008.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id KSORL8SM_ZVp; Tue, 10 Dec 2024 21:58:35 +0000 (UTC) Received: from [100.66.154.22] (unknown [104.135.204.82]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 008.lax.mailroute.net (Postfix) with ESMTPSA id 4Y7CKg6tF3z6ClH0D; Tue, 10 Dec 2024 21:58:31 +0000 (UTC) Message-ID: <6d65d744-abed-405b-8116-b291b33796b0@acm.org> Date: Tue, 10 Dec 2024 13:58:30 -0800 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCHv10 0/9] write hints with nvme fdp, scsi streams To: Nitesh Shetty , "Martin K. Petersen" Cc: Javier Gonzalez , Matthew Wilcox , Keith Busch , Christoph Hellwig , Keith Busch , "linux-block@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "linux-scsi@vger.kernel.org" , "io-uring@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "joshi.k@samsung.com" References: <9d61a62f-6d95-4588-bcd8-de4433a9c1bb@acm.org> <8ef1ec5b-4b39-46db-a4ed-abf88cbba2cd@acm.org> <20241205080342.7gccjmyqydt2hb7z@ubuntu> <20241210095333.7qcnuwvnowterity@ubuntu> Content-Language: en-US From: Bart Van Assche In-Reply-To: <20241210095333.7qcnuwvnowterity@ubuntu> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/10/24 1:53 AM, Nitesh Shetty wrote: > We did implement payload based approach in the past[1] which aligns > with this. Since we wait till the REQ_OP_COPY_SRC completes, there won't > be issue with async type of dm IOs. > Since this would be an internal kernel plumbing, we can optimize/change > the approach moving forward. > If you are okay with the approach, I can give a respin to that version. Yes, I remember this. Let's wait with respinning/reposting until there is agreement about the approach for copy offloading. Thanks, Bart.