On Tue, May 22, 2012 at 4:59 AM, Mel Gorman [off-list ref] wrote:

This bug is really old as it triggers as far back as 2.6.32.58. I don't
know why yet.

Would somebody humor me, and try it without the MPOL_F_SHARED games?
The whole reference counting in the presense of setting and clearing
that bit looks totally crazy. I really cannot see how it could ever
work.

I realize that it avoids a copy, but I really don't see how the
refcounting is supposed to work for it..

                       Linus

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