Re: [PATCH v9 15/69] damon: Convert __damon_va_three_regions to use the VMA iterator

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* SeongJae Park <sj@xxxxxxxxxx> [220510 03:44]:
> On Wed, 4 May 2022 01:12:26 +0000 Liam Howlett <liam.howlett@xxxxxxxxxx> wrote:
> 
> > From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
> > 
> > This rather specialised walk can use the VMA iterator.  If this proves to
> > be too slow, we can write a custom routine to find the two largest gaps,
> > but it will be somewhat complicated, so let's see if we need it first.
> > 
> > Update the kunit test case to use the maple tree.  This also fixes an
> > issue with the kunit testcase not adding the last VMA to the list.
> > 
> > Fixes: 17ccae8bb5c9 (mm/damon: add kunit tests)
> > Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
> > Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
> > Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>
> > ---
> >  mm/damon/vaddr-test.h | 37 +++++++++++-------------------
> >  mm/damon/vaddr.c      | 53 ++++++++++++++++++++++---------------------
> >  2 files changed, 40 insertions(+), 50 deletions(-)
> > 
> > diff --git a/mm/damon/vaddr-test.h b/mm/damon/vaddr-test.h
> > index 5431da4fe9d4..dbf2b8759607 100644
> > --- a/mm/damon/vaddr-test.h
> > +++ b/mm/damon/vaddr-test.h
> > @@ -13,34 +13,21 @@
> >  #define _DAMON_VADDR_TEST_H
> >  
> >  #include <kunit/test.h>
> > +#include "../../mm/internal.h"
> 
> V9 maple tree patchset has moved the definition of vma_mas_store() from
> internal.h to mmap.c, so inclusion of internal.h wouldn't needed here, right?
> 
> If we end up moving the definitions back to internal.h, because this file is
> under mm/damon/, we can also use shorter include path, "../internal.h".

Yeah, that seems like a good plan.

I will be moving it back to internal to restore functionality to nommu.





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