gistfile1.diff

diff --git a/deps/jemalloc/src/chunk_mmap.c b/deps/jemalloc/src/chunk_mmap.c
index 164e86e..c2ce465 100644
--- a/deps/jemalloc/src/chunk_mmap.c
+++ b/deps/jemalloc/src/chunk_mmap.c
@@ -48,9 +48,25 @@ pages_map(void *addr, size_t size, bool noreserve)
        if (noreserve)
                flags |= MAP_NORESERVE;
 #endif
+
+#ifdef MAP_HUGETLB
+       flags |= MAP_HUGETLB;
+#endif
        ret = mmap(addr, size, PROT_READ | PROT_WRITE, flags, -1, 0);
        assert(ret != NULL);
 
+#ifdef MAP_HUGETLB
+       /*
+        * Retry on ENOMEM when we tried to map using huge pages.
+        * This strategy is far from optimal, needs way more heuristics...
+        */
+       if (ret == MAP_FAILED && errno == ENOMEM) {
+               flags &= ~MAP_HUGETLB;
+               ret = mmap(addr, size, PROT_READ | PROT_WRITE, flags, -1, 0);
+               assert(ret != NULL);
+       }
+#endif
+
        if (ret == MAP_FAILED)
                ret = NULL;
        else if (addr != NULL && ret != addr) {