tree 0b3eb3ae6b7b21226cf8e1410aa6dd6d0e07a110
parent 1fbcf37128cc19bd67d9a736fb634dc444e907d7
author Paul Mundt <lethal@linux-sh.org> 1245958317 +0900
committer Paul Mundt <lethal@linux-sh.org> 1245958317 +0900

nommu: provide follow_pfn().

With the introduction of follow_pfn() as an exported symbol, modules have
begun making use of it. Unfortunately this was not reflected on nommu at
the time, so the in-tree users have subsequently all blown up with link
errors there.

This provides a simple follow_pfn() that just returns addr >> PAGE_SHIFT,
which will do the right thing on nommu. There is no need to do range
checking within the vma, as the find_vma() case will already take care of
this.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>