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Date: Wed, 2 Aug 2017 16:16:37 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Mel Gorman <mgorman@suse.de>
Cc: torvalds@linux-foundation.org, will.deacon@arm.com, oleg@redhat.com,
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Subject: Re: [PATCH -v2 1/4] mm: Rework {set,clear,mm}_tlb_flush_pending()
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On Wed, Aug 02, 2017 at 02:52:03PM +0100, Mel Gorman wrote:
> On Wed, Aug 02, 2017 at 03:05:50PM +0200, Peter Zijlstra wrote:
> > On Wed, Aug 02, 2017 at 02:00:40PM +0100, Mel Gorman wrote:
> > > On Wed, Aug 02, 2017 at 01:38:38PM +0200, Peter Zijlstra wrote:
> > > > For this to work we need to rework migrate_misplaced_transhuge_page()
> > > > a little and move the test up into do_huge_pmd_numa_page().
> > > > 
> > > 
> > > Note that Nadav has a patch in parallel on it's way towards Andrew's
> > > tree that I suggested to always always check if a TLB flush is pending
> > > under the PTL. A conflict will happen but will be trivial to resolve.
> > 
> > Got a link?
> 
> Subject: Revert "mm: numa: defer TLB flush for THP migration as long as possible"
> 
> http://lkml.kernel.org/r/20170731164325.235019-4-namit@vmware.com
> 

Thanks, yes that should be easy to resolve.