Re: alternative take on the same page merging leak fix

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On Wed, Jun 12, 2019 at 09:09:23AM +0800, Ming Lei wrote:
> We have to backport the fixes to -stable tree, and downstream need to
> ship the fix too.
> 
> The issue is quite serious because the leak is in IO path and the whole
> system ram can be used up easily on some workloads. So I think the fix
> should be for 5.2, however, regression risk might be increased by
> pulling cleanup & re-factor in now.
> 
> I really appreciate you may cook a fix-only patch for this issue.
> Especially the change in add pc page code isn't necessary for fixing
> the issue.

Patches 3 and 4 have no dependencies on 1 and 2, and should have
arguably been ordered first in the series.



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