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[146.241.231.243]) by smtp.gmail.com with ESMTPSA id v14-20020a0cdd8e000000b005dd8b9345b9sm4898755qvk.81.2023.06.23.03.21.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Jun 2023 03:21:20 -0700 (PDT) Message-ID: Subject: Re: [PATCH net-next v3 01/18] net: Copy slab data for sendmsg(MSG_SPLICE_PAGES) From: Paolo Abeni To: David Howells Cc: Jakub Kicinski , Eric Dumazet , netdev@vger.kernel.org, Alexander Duyck , "David S. Miller" , Willem de Bruijn , David Ahern , Matthew Wilcox , Jens Axboe , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Menglong Dong Date: Fri, 23 Jun 2023 12:21:16 +0200 In-Reply-To: <2048548.1687514811@warthog.procyon.org.uk> References: <20230622191134.54d5cb0b@kernel.org> <20230622132835.3c4e38ea@kernel.org> <20230622111234.23aadd87@kernel.org> <20230620145338.1300897-1-dhowells@redhat.com> <20230620145338.1300897-2-dhowells@redhat.com> <1952674.1687462843@warthog.procyon.org.uk> <1958077.1687474471@warthog.procyon.org.uk> <1969749.1687511298@warthog.procyon.org.uk> <2048548.1687514811@warthog.procyon.org.uk> User-Agent: Evolution 3.46.4 (3.46.4-1.fc37) MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 65065C000D X-Stat-Signature: c6yhdducwhsuebomjgno5bnqwgtnk7s3 X-HE-Tag: 1687515683-133052 X-HE-Meta: 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 kK9fHxyj 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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: On Fri, 2023-06-23 at 11:06 +0100, David Howells wrote: > Paolo Abeni wrote: >=20 > > I'm unsure I follow the above ?!? I *thought* sendpage could be killed > > even without patch 1/18 and 2/18, leaving some patches in this series > > unmodified, and mangling those explicitly leveraging 1/18 to use > > multiple sendmsg()s with different flags? >=20 > That's what I meant. >=20 > With the example, I was showing the minimum needed replacement for a call= to > sendpage. Thank LGTM! Thanks, Paolo