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authorAndrea Arcangeli <aarcange@redhat.com>2011-11-03 00:37:36 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-11 21:36:48 +0400
commit621112ec06bbe3a6dbb6af5f4db3451d01b309f9 (patch)
tree1b8dbf57854f8bee13a88a7492d7ba8ca93ceb8c /arch/powerpc
parent1a2417c30c86961992afae7eb8f803acca2f6b9b (diff)
downloadlinux-621112ec06bbe3a6dbb6af5f4db3451d01b309f9.tar.xz
thp: share get_huge_page_tail()
commit b35a35b556f5e6b7993ad0baf20173e75c09ce8c upstream. This avoids duplicating the function in every arch gup_fast. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <jweiner@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/mm/hugetlbpage.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 1c59d94f5942..da5eb3885702 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -385,17 +385,6 @@ follow_huge_pmd(struct mm_struct *mm, unsigned long address,
return NULL;
}
-static inline void get_huge_page_tail(struct page *page)
-{
- /*
- * __split_huge_page_refcount() cannot run
- * from under us.
- */
- VM_BUG_ON(page_mapcount(page) < 0);
- VM_BUG_ON(atomic_read(&page->_count) != 0);
- atomic_inc(&page->_mapcount);
-}
-
static noinline int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr,
unsigned long end, int write, struct page **pages, int *nr)
{