Hi!

> From: Björn Töpel <bjorn.topel@intel.com>
> 
> [ Upstream commit 7fd3253a7de6a317a0683f83739479fb880bffc8 ]
> 
> The existing busy-polling mode, enabled by the SO_BUSY_POLL socket
> option or system-wide using the /proc/sys/net/core/busy_read knob, is
> an opportunistic. That means that if the NAPI context is not

Do we need this in -stable? It is rather long at 400 lines, and
introduces new API feature, does not fix a bug.

I can revert it on top of 5.10-stable, so I don't believe we have
bugfix depending on it.

Best regards,
								Pavel
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