[S390] add support for nonquiescing sske
Improve performance of the sske operation by using the nonquiescing
variant if the affected page has no mappings established. On machines
with no support for the new sske variant the mask bit will be ignored.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index f4d4120..6f3c6ae 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -108,7 +108,7 @@
#endif
#ifndef __HAVE_ARCH_PAGE_CLEAR_DIRTY
-#define page_clear_dirty(page) do { } while (0)
+#define page_clear_dirty(page, mapped) do { } while (0)
#endif
#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 6fa3178..5f38c46 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -310,7 +310,7 @@
{
#ifdef CONFIG_S390
if (!test_and_set_bit(PG_uptodate, &page->flags))
- page_clear_dirty(page);
+ page_clear_dirty(page, 0);
#else
/*
* Memory barrier must be issued before setting the PG_uptodate bit,