Re: [RFC net-next 4/5] eventpoll: Trigger napi_busy_loop, if prefer_busy_poll is set

[Christoph Hellwig]

On Mon, Aug 12, 2024 at 12:57:07PM +0000, Joe Damato wrote:
> From: Martin Karsten <mkarsten@xxxxxxxxxxxx>
> 
> Setting prefer_busy_poll now leads to an effectively nonblocking
> iteration though napi_busy_loop, even when busy_poll_usecs is 0.

Hardcoding calls to the networking code from VFS code seems like
a bad idea.   Not that I disagree with the concept of disabling
interrupts during busy polling, but this needs a proper abstraction
through file_operations.