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Fri, 31 Mar 2023 06:05:17 -0700 (PDT) Message-ID: <94f0894d-f72c-daa3-10e2-e83e0e15a759@redhat.com> Date: Fri, 31 Mar 2023 09:05:01 -0400 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> From: Xiubo Li In-Reply-To: <709552.1680158901@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-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 87F0C40024 X-Stat-Signature: frrt7xdforcdwb9ufwf57pu4was7n54u X-HE-Tag: 1680267923-841332 X-HE-Meta: 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 9k7vdkIk y9XhU9zEQce4TI/JD4TmpGvYIiaIRfQQMbKUA1WJyndjexK/X7xwvYgXjy7TypIU1dYUYkmfPhHK+5ApgfPyvb2wCmKS3/wa4tIs7POprDoqKz/F22zBOj1DhY7M3qeFNND+3XQWnW/iTcdWG+eL+4sIRucS5Rr2CFaoIBxz5uOHIZZm/JRKPvjatHNp4cZEijBObOUiyaTd0PCDW7ijBkX5J2oKrmv0ZJl5X8Mian4vyl42A49TtqrAMRY0ELG4w0HzMwoclQJ5/lq8H9967Xi9hpvcWiuVrHcC0PgESeoFNtS/IDiAUTd74MGYXoxZ+UtS6N0PhTSibN153AS7Y9/mTX/azMlSJard+pg6CMpiSO2fAnIy6OJXa9xXTHUzJuxUNIGgbDqLWW50S/xMMv77OtZ7KuYnoHFtoi8FvlD/6yi2ntUcmZEXxohJblBUGx7UpJooz3j2LDSw= 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 3/30/23 02:48, 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. Okay, I will check that. Thanks. > David >