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 1DF441C5F14; Mon, 16 Jun 2025 05:24:21 +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=1750051462; cv=none; b=pEJqOFYjJKG5WC1fxw9No6mfyJZhs0ePGF2Cz756Jb0AWu5HRlDm/Ir6Fmypk9CgkcI9hyjaqkYhTa3TU6n+NwDVJKLF53edRlhmz6BqwN7daEvIbKIeteRB3y/cNG6N+7EFnigGBrh6Dfh0mPrLtZmoWvoyn42rNyp+O4t2Vns= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750051462; c=relaxed/simple; bh=vjnuRZwyrWXoziF3PZ3jGavEdFO9Ts8C3nKy4TtQQSs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ImiMyT+7OhuPCDX9ceVypf/owbMZkgt5Eo96Qf4OH5KcPbcRjbGmiKhV1gdnGXadi6MSC6r7HFbSTMA+WUq2lRaqPgVxw2UumZdbnP5qPLxaCMrPZsonw9YM0phMDBS9AqDMI1OJgP7RTI3vaotjqhSeblMjoUl3qkmag5POvOc= 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=pQ77EsXD; 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="pQ77EsXD" 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=J+qg7kSmf2TF3wMSin7ImGQUTOPpXGE9k8KtVX9AqP8=; b=pQ77EsXDWlBVfOokOtyvM2AqZk /5sJyBbv18xN5qvJqYCVZ2zez0MNX+UfQ/zigrpsIgk0ZxNgyUqst5VWe4DLy8JebcgG7NjoCG733 +BE9KWtygS4KcEeGSVEotzZcYhpfRWwhCC5TPI0VS57ROHbI3Pst2EgwFVmDJz9hy3vlyK15q5uAd /pd+wwiGcnKcUdCQxFt8fqwgBBDy4oveuCamlEgcldv+89g96N96tHTTiUT3gzLkkYCZnboNMW32g Rk+CvNEP02gA7+EQtZh3864PDFDCUhbv6z2d8qvz+fLUSlmleCQnT+q/D2nQtAGs4rmiw7cmex1lr PIMQSFjA==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uR2KG-00000003QI9-45k3; Mon, 16 Jun 2025 05:24:09 +0000 Date: Sun, 15 Jun 2025 22:24:08 -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: <09c8fb7c-a337-4813-9f44-3a538c4ee8b1@amd.com> <5d36abace6bf492aadd847f0fabc38be@honor.com> <761986ec0f404856b6f21c3feca67012@honor.com> <80ce3ec9104c4f0abbcb589b03a5f3c7@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: <80ce3ec9104c4f0abbcb589b03a5f3c7@honor.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Fri, Jun 13, 2025 at 09:43:08AM +0000, wangtao wrote: > Here's my analysis on Linux 6.6 with F2FS/iomap. Linux 6.6 is almost two years old and completely irrelevant. Please provide numbers on 6.16 or current Linus' tree.