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Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: 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> To: Paolo Abeni Cc: dhowells@redhat.com, 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 Subject: Re: [PATCH net-next v3 01/18] net: Copy slab data for sendmsg(MSG_SPLICE_PAGES) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <2048547.1687514811.1@warthog.procyon.org.uk> Date: Fri, 23 Jun 2023 11:06:51 +0100 Message-ID: <2048548.1687514811@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 X-Rspamd-Queue-Id: 450B8140014 X-Rspam-User: X-Stat-Signature: jp1eb41awjawk3x173twy7y9s5yj54f3 X-Rspamd-Server: rspam01 X-HE-Tag: 1687514820-308351 X-HE-Meta: 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 Td1vBc7N vTUSesS74YoJ5NQcfCeSjIv9tNCAwI4rOIkS2t3AuNvTVasFcUfZt1V+hj1ItJSgrJLYHFuR6FwvQIpQh4xKjbpXt/J92wN7yoLd5no5MBt8VJ5AZHfC8yMmpvUnCC0VKy5EqhO3d0fHmX4u6txqyLvw0V+H+AJnKw/Fu9QWZIQSqgiPJw6b1Mz+Z13L9Bv/ljKKpjJaflooAvQWjYlG3tLB1w/sDcnJEQC0lxZURCeOj+RJfAylPsfUEpkPcUqb9JrgBa07+abvyNkypBlh8NJiTJVtVe4teD2iKeQSACxbpbz4= 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: Paolo Abeni wrote: > 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? That's what I meant. With the example, I was showing the minimum needed replacement for a call to sendpage. David