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

From: Christoph Hellwig <[email-masked]>
Date: Mon, 12 Aug 2024 06:19:35 -0700

On Mon, Aug 12, 2024 at 12:57:07PM +0000, Joe Damato wrote:
> From: Martin Karsten <[email-masked]>
> 
> 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.