Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp

Conflicts:
	litmus/sched_cedf.c

1 files changed, 7 insertions, 4 deletions

diff --git a/mm/swap_state.c b/mm/swap_state.c
index e10f5833167f..46680461785b 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -24,12 +24,10 @@
 
 /*
  * swapper_space is a fiction, retained to simplify the path through
- * vmscan's shrink_page_list, to make sync_page look nicer, and to allow
- * future use of radix_tree tags in the swap cache.
+ * vmscan's shrink_page_list.
  */
 static const struct address_space_operations swap_aops = {
         .writepage      = swap_writepage,
-        .sync_page      = block_sync_page,
         .set_page_dirty = __set_page_dirty_nobuffers,
         .migratepage    = migrate_page,
 };
@@ -37,7 +35,6 @@ static const struct address_space_operations swap_aops = {
 static struct backing_dev_info swap_backing_dev_info = {
         .name           = "swap",
         .capabilities   = BDI_CAP_NO_ACCT_AND_WRITEBACK | BDI_CAP_SWAP_BACKED,
-        .unplug_io_fn   = swap_unplug_io_fn,
 };
 
 struct address_space swapper_space = {
@@ -157,6 +154,12 @@ int add_to_swap(struct page *page)
         if (!entry.val)
                 return 0;
 
+        if (unlikely(PageTransHuge(page)))
+                if (unlikely(split_huge_page(page))) {
+                        swapcache_free(entry, NULL);
+                        return 0;
+                }
+
         /*
          * Radix-tree node allocations from PF_MEMALLOC contexts could
          * completely exhaust the page allocator. __GFP_NOMEMALLOC