Re: mmotm 2011-04-29 - wonky VmRSS and VmHWM values after swapping

[Valdis . Kletnieks]

On Tue, 10 May 2011 18:04:45 +0200, Peter Zijlstra said:

> I haven't quite figured out how to reproduce, but does the below cure
> things? If so, it should probably be folded into the first patch
> (mm-mmu_gather-rework.patch?) since that is the one introducing this.
> 
> ---
> Subject: mm: Fix RSS zap_pte_range() accounting
> 
> Since we update the RSS counters when breaking out of the loop and
> release the PTE lock, we should start with fresh deltas when we
> restart the gather loop.

Confirming this patch makes the numbers look sane and plausible again, so
feel free to stick a Tested-By: to match the Reported-By:.

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