[PATCH v13 9/70] mm: add VMA iterator

[Davidlohr Bueso]

On Mon, 22 Aug 2022, Liam Howlett wrote:

>From: "Matthew Wilcox (Oracle)" <willy at infradead.org>
>
>This thin layer of abstraction over the maple tree state is for iterating
>over VMAs.  You can go forwards, go backwards or ask where the iterator
>is.  Rename the existing vma_next() to __vma_next() -- it will be removed
>by the end of this series.
>
>Signed-off-by: Matthew Wilcox (Oracle) <willy at infradead.org>
>Signed-off-by: Liam R. Howlett <Liam.Howlett at Oracle.com>
>Acked-by: Vlastimil Babka <vbabka at suse.cz>
>Reviewed-by: David Hildenbrand <david at redhat.com>

Reviewed-by: Davidlohr Bueso <dave at stgolabs.net>