On Sat, Aug 19, 2006 at 12:11:34AM -0400, Douglas Gilbert wrote:
> > Your point about the change to sg_vma_nopage() between
> > lk 2.6.15 and lk 2.6.16 also seems to be correct.
> > The most indented part of that function has been
> > changed from incrementing the change count on the
> > reported page (as indicated by 'offset') in a
> > compound page allocation to ignoring the 'offset'
> > and incrementing the page count on the first page
> > in a compound page allocation.
> if (offset < len) {
> - page = sg->page;
> + page = virt_to_page(page_address(sg->page) + offset);
> get_page(page); /* increment page count */
But page_address can return NULL on highmem machines. Or are you
guaranteed that these are lowmem pages?
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