Re: [PATCH] mm: Drop "PFNs busy" printk in an expected path.

From: Michal Nazarewicz
Date: Sat Dec 31 2016 - 00:08:59 EST

On Fri, Dec 30 2016, Eric Anholt wrote:
> OK, so the design is bad. When you said bug, I definitely thought you
> were saying that the message shouldn't happen in the design.
> Given CMA's current design, should everyone using CMA see their logs
> slowly growing with this message that is an secret code for "CMA's
> design hasn't yet changed"?

Just to be clear, itâs not CMAâs design; itâs movable pageâs design that
is bad (at least in the context of this discussion).

But yes, because of the way movable pages are, everyone is likely to see
the message.

> If you want to have people be able to track how often this is
> happening, let's make a perf event for it or something instead.


Best regards
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