tree 6e23993f320cd6b0d45a5fb4832188cd2092efe2
parent df9d6985be2a7e7683c46e4c6ea608fc69f02b45
author Hillf Danton <dhillf@gmail.com> 1320106178 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1320107450 -0700

mm/huge_memory: fix copying user highpage

The THP copy-on-write handler falls back to regular-sized pages for a huge
page replacement upon allocation failure or if THP has been individually
disabled in the target VMA.  The loop responsible for copying page-sized
chunks accidentally uses multiples of PAGE_SHIFT instead of PAGE_SIZE as
the virtual address arg for copy_user_highpage().

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Acked-by: Johannes Weiner <jweiner@redhat.com>
Reviewed-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>