tree eb0347efe7e40adc78a271752c7382aa67875d6a
parent e9da73d67729b58bba256123e2b4651e0d8a01ac
author Andrea Arcangeli <aarcange@redhat.com> 1294962392 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1294968759 -0800

thp: alter compound get_page/put_page

Alter compound get_page/put_page to keep references on subpages too, in
order to allow __split_huge_page_refcount to split an hugepage even while
subpages have been pinned by one of the get_user_pages() variants.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>