Hi Geert,
On 6/03/23 20:21, Geert Uytterhoeven wrote:
Are we certain that contiguous vaddr always maps to contiguous paddr?
For a general __flush_pages_to_ram() function, that would not be
guaranteed. But as this is meant for folios, it must be true:
https://elixir.bootlin.com/linux/latest/source/include/linux/mm_types.h#L320
Thanks for explaining - that just leaves the problem of cowboys like
myself abusing __flush_pages_to_ram(addr, nr) with nr > 1 for something
that isn't a folio. Maybe a comment 'nr > 1 only valid on folios' would
help ...
Cheers,
Michael
Gr{oetje,eeting}s,
Geert
