David Howells a0dbf5f818 af_unix: Support MSG_SPLICE_PAGES
Make AF_UNIX sendmsg() support MSG_SPLICE_PAGES, splicing in pages from the
source iterator if possible and copying the data in otherwise.

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: Kuniyuki Iwashima <kuniyu@amazon.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-05-23 20:48:27 -07:00
..
2023-05-23 20:48:27 -07:00
2023-03-08 13:21:47 +00:00
2021-08-04 09:55:52 +01:00
2023-03-08 13:21:47 +00:00