On Sun, Jan 24, 2021 at 06:22:19PM +1000, Nicholas Piggin wrote: > vmalloc_to_page returns NULL for addresses mapped by larger pages[*]. > Whether or not a vmap is huge depends on the architecture details, > alignments, boot options, etc., which the caller can not be expected > to know. Therefore HUGE_VMAP is a regression for vmalloc_to_page. > > This change teaches vmalloc_to_page about larger pages, and returns > the struct page that corresponds to the offset within the large page. > This makes the API agnostic to mapping implementation details. Maybe enable instead of fix would be better in the subject line? Otherwise this looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>
