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List: linux-mm
Subject: Re: [PATCH v2 RESEND] mm/mmap: convert all mas except mas_detach to vma iterator
From: "Liam R. Howlett" <Liam.Howlett () Oracle ! com>
Date: 2024-03-25 20:26:48
Message-ID: 20240325202648.ogekznob5vsayd6k () revolver
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* Helge Deller <deller@gmx.de> [240325 16:24]:
> On 3/25/24 19:53, Andrew Morton wrote:
> > On Mon, 25 Mar 2024 14:32:58 +0800 Yajun Deng <yajun.deng@linux.dev> wrote:
> >
> > > There are two types of iterators mas and vmi in the current code. If the
> > > maple tree comes from the mm structure, we can use the vma iterator. Avoid
> > > using mas directly as possible.
> > >
> > > Keep using mas for the mt_detach tree, since it doesn't come from the mm
> > > structure.
> > >
> > > Remove as many uses of mas as possible, but we will still have a few that
> > > must be passed through in unmap_vmas() and free_pgtables().
> > >
> > > Also introduce vma_iter_reset, vma_iter_{prev, next}_range_limit and
> > > vma_iter_area_{lowest, highest} helper functions for using the vma
> > > interator.
> > >
> >
> > I assume Liam's earlier request still applies?
> >
> > : Helge,
> > :
> > : Yajun has changed code that affects parisc with this patch, which hasn't
> > : been tested.
> > : ...
> > : Can you make sure that the expand_upwards() still functions on parisc?
>
> Oh, I didn't noticed that request earlier.
> Anyway, I now tested this patch on top of 6.9-rc1, and the kernel still
> boots up nicely on parisc and as such expand_upwards() seem to work as before.
> So, you may add:
>
> Tested-by: Helge Deller <deller@gmx.de> # parisc
Thanks Helge!
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
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