Michal Nazarewicz <mina86@xxxxxxxxxx> writes: > On Thu, Dec 29 2016, Eric Anholt wrote: >> Michal Hocko <mhocko@xxxxxxxxxx> writes: >> >>> This has been already brought up >>> http://lkml.kernel.org/r/20161130092239.GD18437@xxxxxxxxxxxxxx and there >>> was a proposed patch for that which ratelimited the output >>> http://lkml.kernel.org/r/20161130132848.GG18432@xxxxxxxxxxxxxx resp. >>> http://lkml.kernel.org/r/robbat2-20161130T195244-998539995Z@xxxxxxxxxxxxxxxxxx >>> >>> then the email thread just died out because the issue turned out to be a >>> configuration issue. Michal indicated that the message might be useful >>> so dropping it completely seems like a bad idea. I do agree that >>> something has to be done about that though. Can we reconsider the >>> ratelimit thing? >> >> I agree that the rate of the message has gone up during 4.9 -- it used >> to be a few per second. > > Sounds like a regression which should be fixed. > > This is why I don’t think removing the message is a good idea. If you > suddenly see a lot of those messages, something changed for the worse. > If you remove this message, you will never know. > >> However, if this is an expected path during normal operation, > > This depends on your definition of ‘expected’ and ‘normal’. > > In general, I would argue that the fact those ever happen is a bug > somewhere in the kernel – if memory is allocated as movable, it should > be movable damn it! I was taking "expected" from dae803e165a11bc88ca8dbc07a11077caf97bbcb -- if this is a actually a bug, how do we go about debugging it? I've had Raspbian carrying a patch downstream to remove the error message for 2 years now, and I either need to get this fixed or get this patch merged to Fedora and Debian as well, now that they're shipping some support for Raspberry Pi.
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