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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> 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 X-Rspamd-Server: rspam01 X-Stat-Signature: aawx8qsps78e67fy635ygk3h81mgsxu7 X-Rspamd-Queue-Id: 02C6C180004 X-Rspam-User: X-HE-Tag: 1750051463-225182 X-HE-Meta: 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 BkcpRBOl 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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.