On Thu, 3 Apr 2025 at 09:45, Kees Cook <[email protected]> wrote:
>
> pstore tries to work with either real RAM or with iomem things. What
> is there now Currently Works Fine, but should this be using
> vmap_page_range()?
Yes, I don't see the point of using vmap() on something that is
contiguous but is made to look like a collection of random pfns.
IOW, that whole 'pages[]' array (and the kmalloc/kfree) seems pointless.
I *suspect* the history is simply that 'vmap()' predates 'vmap_page_range()'.
But maybe I'm missing something, and there is some limitation to
vmap_page_range() that I'm not seeing.
Linus
