[RFC 0/2] io_uring zc notification tag override

[Pavel Begunkov <asml.silence@gmail.com>]

Following up user feedback, we'd better to have a way to set a notification
tag on the fly comparing to statically at the registration time at it's
currently implemented. Add a feature to allow to copy send_sqe->user_data
into the notification it's flushing.

With 1/2 we can also add a cqe flag for when it fallback from zerocopy
to normal copy execution.

A git branch for convenience:
https://github.com/isilence/linux.git zc-override-tag

https://github.com/isilence/linux/tree/net/zc-override-tag

Pavel Begunkov (2):
  io_uring/notif: change notif CQE uapi format
  io_uring/net: allow to override notification tag

 include/uapi/linux/io_uring.h | 10 ++++++++++
 io_uring/net.c                |  6 +++++-
 io_uring/notif.c              |  4 ++--
 3 files changed, 17 insertions(+), 3 deletions(-)

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2.37.0