Re: [PATCH v4 10/20] mm/rmap: track whether the page VMA mapped pgoff is anonymous

On 8/6/26 22:21, Lorenzo Stoakes (ARM) wrote:

Update the page_vma_mapped_walk structure to track whether the pgoff being
tracked is an anonymous pgoff or not and update the comments to reflect
this.

This is necessary in order to determine the correct VMA page
offset in vma_address_end() when pvmw->nr_pages > 1.

Also document that pvmw->pgoff is meaningless for pvmw->nr_pages == 1 and
for KSM.

Do not set this field where pgoff is not specified.

This is laying the groundwork for eventually using anonymous page offsets
as the index for all anonymous folios.

No functional change intended.

Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

Acked-by: David Hildenbrand (Arm) <david@kernel.org>

-- 
Cheers,

David