[PATCH] mm: extend prefault helpers to fault in more than PAGE_SIZE

[Andrew Morton]

On Thu, 1 Mar 2012 00:14:53 +0100
Daniel Vetter <daniel at ffwll.ch> wrote:

> I'll redo this patch by adding _multipage versions of these 2 functions
> for i915.

OK, but I hope "for i915" doesn't mean "private to"!  Put 'em in
pagemap.h, for maintenance reasons and because they are generic.

Making them inline is a bit sad, but that's OK for now - they have few
callsites.