linux-kernel - [PATCH net-next 0/6] splice, net: Some miscellaneous MSG_SPLICE

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Message-ID: <20230609100221.2620633-1-dhowells@redhat.com>
Date:   Fri,  9 Jun 2023 11:02:15 +0100
From:   David Howells <dhowells@...hat.com>
To:     netdev@...r.kernel.org
Cc:     David Howells <dhowells@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>,
        David Ahern <dsahern@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jens Axboe <axboe@...nel.dk>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 0/6] splice, net: Some miscellaneous MSG_SPLICE_PAGES changes

Now that the splice_to_socket() has been rewritten so that nothing now uses
the ->sendpage() file op[1], some further changes can be made, so here are
some miscellaneous changes that can now be done.

 (1) Remove the ->sendpage() file op.

 (2) Remove hash_sendpage*() from AF_ALG.

 (3) Make sunrpc send multiple pages in single sendmsg() call rather than
     calling sendpage() in TCP (or maybe TLS).

 (4) Make tcp_bpf_sendpage() a wrapper around tcp_bpf_sendmsg().

 (5) Make AF_KCM use sendmsg() when calling down to TCP and then make it
     send entire fragment lists in single sendmsg calls.

I've pushed the patches here also:

	https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/?h=sendpage-3-misc

David

Link: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=fd5f4d7da29218485153fd8b4c08da7fc130c79f [1]

David Howells (6):
  Remove file->f_op->sendpage
  algif: Remove hash_sendpage*()
  sunrpc: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
  tcp_bpf: Make tcp_bpf_sendpage() go through
    tcp_bpf_sendmsg(MSG_SPLICE_PAGES)
  kcm: Use sendmsg(MSG_SPLICE_PAGES) rather then sendpage
  kcm: Send multiple frags in one sendmsg()

 crypto/algif_hash.c        |  66 --------------------
 include/linux/fs.h         |   1 -
 include/linux/sunrpc/svc.h |  11 ++--
 include/net/kcm.h          |   2 +-
 net/ipv4/tcp_bpf.c         |  49 +++------------
 net/kcm/kcmsock.c          | 120 ++++++++++++++++---------------------
 net/sunrpc/svcsock.c       |  38 ++++--------
 7 files changed, 77 insertions(+), 210 deletions(-)