On Sat, 22 Aug 2020 01:12:05 +1000 Nicholas Piggin <npiggin@xxxxxxxxx> 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. I assume this doesn't matter in current mainline? If wrong, then what are the user-visible effects and why no cc:stable? > 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.
