linux-kernel - RE: [PATCH v3 03/55] net: Declare MSG_SPLICE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <642997b31bf8f_2d2a202088e@willemb.c.googlers.com.notmuch>
Date:   Sun, 02 Apr 2023 10:56:51 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     David Howells <dhowells@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     David Howells <dhowells@...hat.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Christoph Hellwig <hch@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, Jeff Layton <jlayton@...nel.org>,
        Christian Brauner <brauner@...nel.org>,
        Chuck Lever III <chuck.lever@...cle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        netdev@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>
Subject: RE: [PATCH v3 03/55] net: Declare MSG_SPLICE_PAGES internal sendmsg()
 flag

David Howells wrote:
> Declare MSG_SPLICE_PAGES, an internal sendmsg() flag, that hints to a
> network protocol that it should splice pages from the source iterator
> rather than copying the data if it can.  This flag is added to a list that
> is cleared by sendmsg and recvmsg syscalls on entry.

nit: comment not longer matches implementation: recvmsg
 
> This is intended as a replacement for the ->sendpage() op, allowing a way
> to splice in several multipage folios in one go.
> 
> Signed-off-by: David Howells <dhowells@...hat.com>
> cc: Willem de Bruijn <willemdebruijn.kernel@...il.com>
> cc: "David S. Miller" <davem@...emloft.net>
> cc: Eric Dumazet <edumazet@...gle.com>
> cc: Jakub Kicinski <kuba@...nel.org>
> cc: Paolo Abeni <pabeni@...hat.com>
> cc: Jens Axboe <axboe@...nel.dk>
> cc: Matthew Wilcox <willy@...radead.org>
> cc: netdev@...r.kernel.org

Aside from that

Reviewed-by: Willem de Bruijn <willemb@...gle.com>