On 7/29/26 18:48, Lorenzo Stoakes (ARM) wrote: > Introduce __vma_address() which abstracts the VMA start page offset field > as pgoff_start, then update vma_address() to use it. > > Then introduce vma_anon_address() which does the equivalent of > vma_address(), only using the anonymous page offset of the VMA rather than > the file-backed one. > > Also add an assert to ensure that the function is not called for mappings > which are file-backed but not MAP_PRIVATE to ensure it is only used in the > correct places. > > This will be necessary for determining the address of a folio's index > within a VMA when the folio belongs to a MAP_PRIVATE file-backed VMA but > has been CoW'd, and thus is anonymous, once the anonymous VMA page offset > field is used for the reverse mapping. > > No callers are updated, so no functional change intended. > > Signed-off-by: Lorenzo Stoakes (ARM) <[email protected]> > ---
Acked-by: David Hildenbrand (Arm) <[email protected]> -- Cheers, David
