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Sun, 09 Apr 2023 17:38:39 -0700 (PDT) Message-ID: <5019ac6e-6871-9439-b24f-6bcb24bd89d8@redhat.com> Date: Mon, 10 Apr 2023 08:38:31 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.1 Subject: Re: [RFC PATCH v2 37/48] ceph: Use sendmsg(MSG_SPLICE_PAGES) rather than sendpage() To: David Howells Cc: Matthew Wilcox , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Al Viro , Christoph Hellwig , Jens Axboe , Jeff Layton , Christian Brauner , Chuck Lever III , Linus Torvalds , netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Ilya Dryomov , ceph-devel@vger.kernel.org References: <7f7947d6-2a03-688b-dc5e-3887553f0106@redhat.com> <20230329141354.516864-1-dhowells@redhat.com> <20230329141354.516864-38-dhowells@redhat.com> <709552.1680158901@warthog.procyon.org.uk> <1814785.1680510766@warthog.procyon.org.uk> From: Xiubo Li In-Reply-To: <1814785.1680510766@warthog.procyon.org.uk> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: fs3adrzfh9mkjtqbimahzcygg76zzg3d X-Rspam-User: X-Rspamd-Queue-Id: 368C82000D X-Rspamd-Server: rspam06 X-HE-Tag: 1681087131-689020 X-HE-Meta: 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 LFPvUaPC J+1gCxY0N4pOt2suVWk7aggEd6pXRL7RWxSIg2M0lUHLBZprL9p6q/4gRY8p1qyzIcsEhCLxRgY9RIeZFQLaDvJ1RuVAwUVLcqtVPf8GyqC6yKul6dFjpTB2tYUfBZPvyfo/swaCoa87sAF5u0LrzH0Uftog6wUYf72ZI85n1q6VOfukGM9WjuTcrvkjTp0XLwDmLP6KbIs8z7n8UOCkwleuER9TZ+4NceSd9NjG6Im+53d7+xDq1OSpQme+63sKbzFUjiI0amADO5r0FLkL/KFWKfJk/FusMQquG2vhe+vKs2+btUKaWB3ExGuQBc8WSDhEhnghdXyIQ/wfLZ01oujo69ekvr0YTZipPneom98cZOXjGwBAPvNjbF7Lf0vrt3dTsolLIcdjXDvX+S8uN+Z19N6HBEfbvUAnMt2yLLCOUeA9Dv1+D9De9qobeWHOcAh7FAp0Z+opZFSE= 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: On 4/3/23 16:32, David Howells wrote: > Xiubo Li wrote: > >> On 3/30/23 14:48, David Howells wrote: >>> Xiubo Li wrote: >>> >>>> BTW, will this two patch depend on the others in this patch series ? >>> Yes. You'll need patches that affect TCP at least so that TCP supports >>> MSG_SPLICE_PAGES, so 04-08 and perhaps 09. It's also on top of the >>> patches that remove ITER_PIPE on my iov-extract branch, but I don't think >>> that should affect you. >> Why I asked this is because I only could see these two ceph relevant patches >> currently. > Depends on how you defined 'relevant', I guess. Only two patches modify ceph > directly, but there's a dependency: to make those work, TCP needs altering > also. Okay. Will run the test today. I was reinstalling my laptop last week. Thanks - Xiubo > David >