Merge branch 'devicetree/for-x86' of git://git.secretlab.ca/git/linux-2.6 into x86...

[firefly-linux-kernel-4.4.55.git] / mm / swap_state.c

diff --git a/mm/swap_state.c b/mm/swap_state.c
index e10f5833167f6d5b564a534484985dc3c7dee745..5c8cfabbc9bc3abdbf7f342656ea8c58b727aae8 100644 (file)
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -157,6 +157,12 @@ 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