tree 9f3bdf438bcb0d5f6e723665ced23308fffb8368
parent 281ab031a8c9e5b593142eb4ec59a87faae8676a
author Linus Torvalds <torvalds@g5.osdl.org> 1134757283 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> 1134757283 -0800

Make sure we copy pages inserted with "vm_insert_page()" on fork

The logic that decides that a fork() might be able to avoid copying a VM
area when it can be re-created by page faults didn't know about the new
vm_insert_page() case.

Also make some things a bit more anal wrt VM_PFNMAP.

Pointed out by Hugh Dickins <hugh@veritas.com>

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