tree 04a82b5fbf83bdb9dcf7fec9aeaaecf92532d88c
parent e4f5c82a92c2a546a16af1614114eec19120e40a
author Linus Torvalds <torvalds@g5.osdl.org> 1134359162 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> 1134359162 -0800

Allow arbitrary shared PFNMAP's

A shared mapping doesn't cause COW-pages, so we don't need to worry
about the whole vm_pgoff logic to decide if a PFN-remapped page has
gone through COW or not.

This makes it possible to entirely avoid the special "partial remapping"
logic for the common case.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>