[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>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/rmap.c b/mm/rmap.c
index 92e6757f196e..5f17fad1bee8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -745,7 +745,7 @@ int page_mkclean(struct page *page)
                 if (mapping) {
                         ret = page_mkclean_file(mapping, page);
                         if (page_test_dirty(page)) {
-                                page_clear_dirty(page);
+                                page_clear_dirty(page, 1);
                                 ret = 1;
                         }
                 }
@@ -942,7 +942,7 @@ void page_remove_rmap(struct page *page)
          * containing the swap entry, but page not yet written to swap.
          */
         if ((!PageAnon(page) || PageSwapCache(page)) && page_test_dirty(page)) {
-                page_clear_dirty(page);
+                page_clear_dirty(page, 1);
                 set_page_dirty(page);
         }
         /*