From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B521F17736; Tue, 10 Jun 2025 13:34:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749562486; cv=none; b=s1M5sGTU9MR/kX5QsndZmKWQm5XSLKnKtcwRfR2iNty6t+vzkqOpXi639pBt3/dMf03+iTh5uRuwY9FVjFbO62NMsNsPPbj5AUY3Fz33A/j6d8fYE3pJbOZT8lLxNsG9F4g+BIMPO/g3r3vJ4vdtBN0rBtWGQrGqmWzcyCNQABs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749562486; c=relaxed/simple; bh=MOOfKRpPRTUUZtP6G8zk3QqaFEwZW/S6yRgDsEYfs+4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=S52Qbgi6/kndbH1gvV/XcVQkogsyG+qY5yqn97vE1/sUc+SqlWLVP9Yz+sLsro5ia4fgXT33oWDye4BRTFXaekH8Knm/Bj+gWJyECxlTeAyqsK10aNyH9qalmU4FShATP0huY493KJ+FytSYHQZg9W4zPNEruPGPj8nVjbEn0h0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=U0Ep+1JR; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="U0Ep+1JR" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=MOOfKRpPRTUUZtP6G8zk3QqaFEwZW/S6yRgDsEYfs+4=; b=U0Ep+1JRg1+M/75WhPBAUZs+Oq 6iycChpWzpXMnUGEmJqdZUSdpqoh+g0REuJ+Cdw9o8cwoOJpvNq6bVioy9erzYPsIDc/DrnOyFe6D OsC5q1oDTpmwc/MGSHXjpRwE2v/OE2ItG875dknYWDEbrhGMoWBUOQQzwd1OwC7cBJRzLjntGfpaB /WdPZq3JIQeuEu4wyUU5qkF28R411HgORdmfPIWeeewAJX0UQ+BYCp7z2WX47v/WL0aFYpwiK95J9 FfPxD28BlKafN77peVqWJxzKhm2z8ZoDzvBq3CnLvVGBMSBN+6rUbzM7HrSTgmjiJ/HlD3nxJOVPf FryPjXQg==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uOz7Z-00000006zNd-2xsx; Tue, 10 Jun 2025 13:34:33 +0000 Date: Tue, 10 Jun 2025 06:34:33 -0700 From: Christoph Hellwig To: wangtao Cc: Christoph Hellwig , Christian =?iso-8859-1?Q?K=F6nig?= , "sumit.semwal@linaro.org" , "kraxel@redhat.com" , "vivek.kasireddy@intel.com" , "viro@zeniv.linux.org.uk" , "brauner@kernel.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "amir73il@gmail.com" , "benjamin.gaignard@collabora.com" , "Brian.Starkey@arm.com" , "jstultz@google.com" , "tjmercier@google.com" , "jack@suse.cz" , "baolin.wang@linux.alibaba.com" , "linux-media@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "linaro-mm-sig@lists.linaro.org" , "linux-kernel@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" , "wangbintian(BintianWang)" , yipengxiang , liulu 00013167 , hanfeng 00012985 Subject: Re: [PATCH v4 0/4] Implement dmabuf direct I/O via copy_file_range Message-ID: References: <20250603095245.17478-1-tao.wangtao@honor.com> <09c8fb7c-a337-4813-9f44-3a538c4ee8b1@amd.com> <5d36abace6bf492aadd847f0fabc38be@honor.com> <761986ec0f404856b6f21c3feca67012@honor.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <761986ec0f404856b6f21c3feca67012@honor.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Mon, Jun 09, 2025 at 09:32:20AM +0000, wangtao wrote: > Are you suggesting adding an ITER_DMABUF type to iov_iter, Yes.