Not sure this makes sense, but after 1/2 we can also split fifo_open()
and pipe_poll() to factor out the wait_for_partner/wake_up_partner logic.

Link to v1: https://lore.kernel.org/all/20250204132153.GA20921@redhat.com/

Oleg.
---

 fs/internal.h |  1 +
 fs/pipe.c     | 60 ++++++++++++++++++++++++++++++++++++++++++++---------------
 2 files changed, 46 insertions(+), 15 deletions(-)