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At the moment you have to use sendmsg for vectorized send. While this works it's suboptimal as it also means you need to allocate a struct msghdr that needs to be kept alive until a submission happens. We can remove this limitation by just allowing to use send directly. Signed-off-by: Norman Maurer <norman_maurer@apple.com> Link: https://lore.kernel.org/r/20250729065952.26646-1-norman_maurer@apple.com [axboe: remove -EINVAL return for SENDMSG and SEND_VECTORIZED] [axboe: allow send_zc to set SEND_VECTORIZED too] Signed-off-by: Jens Axboe <axboe@kernel.dk>