tcp: Convert do_tcp_sendpages() to use MSG_SPLICE_PAGES

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Convert do_tcp_sendpages() to use sendmsg() with MSG_SPLICE_PAGES rather
than directly splicing in the pages itself.  do_tcp_sendpages() can then be
inlined in subsequent patches into its callers.

This allows ->sendpage() to be replaced by something that can handle
multiple multipage folios in a single transaction.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: David Ahern <dsahern@kernel.org>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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David Howells 2023-05-22 13:11:14 +01:00 • committed by Jakub Kicinski

parent 270a1c3de4

commit c5c37af6ec

1 changed files with 7 additions and 151 deletions

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net/ipv4/tcp.c

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