4 Feb
2013
4 Feb
'13
3:11 p.m.
On Mon, Feb 04, 2013 at 03:42:26PM +0100, Michal Nazarewicz wrote:
On Mon, Feb 04, 2013 at 03:24:51PM +0100, Michal Nazarewicz wrote:
Perhaps it should use lowmem_page_address() then?
On Mon, Feb 04 2013, Russell King - ARM Linux wrote:
It's well defined that page_address() will be non-NULL for lowmem pages. There is nothing wrong with the above.
It would save on a branch and a function call though.
Depending on the size of struct page, if we care that much, we can probably enable WANT_PAGE_VIRTUAL which'll make it even cheaper as it's just a dereference.