On Wed, 29 Mar 2023 14:10:09 +0100
Vincent Donnefort [off-list ref] wrote:

The v2 of this series only updates the head page in the update ioctl
(ring_buffer_update_meta_page()) Couldn't find a nice way around that as it can
be either updated by the reader or the writer. So the best solution seemed a
call to set_head_page().

Yes, the update will race between readers and writers. Let's not worry
about this at the moment and not expose it yet. I'm looking at other
ways around this too.

-- Steve