kcm: Convert kcm_sendpage() to use MSG_SPLICE_PAGES

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Convert kcm_sendpage() to use sendmsg() with MSG_SPLICE_PAGES rather than
directly splicing in the pages itself.

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: Tom Herbert <tom@herbertland.com>
cc: Tom Herbert <tom@quantonium.net>
cc: Cong Wang <cong.wang@bytedance.com>
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 2023-05-31 12:04:22 +01:00 • committed by Jakub Kicinski

parent 2b03bcae66

commit 5bb3a5cb3e

1 changed files with 18 additions and 143 deletions

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net/kcm/kcmsock.c

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