Merge branch 'akpm' (patches from Andrew)

Merge second patch-bomb from Andrew Morton:
 "Almost all of the rest of MM.  There was an unusually large amount of
  MM material this time"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (141 commits)
  zpool: remove no-op module init/exit
  mm: zbud: constify the zbud_ops
  mm: zpool: constify the zpool_ops
  mm: swap: zswap: maybe_preload & refactoring
  zram: unify error reporting
  zsmalloc: remove null check from destroy_handle_cache()
  zsmalloc: do not take class lock in zs_shrinker_count()
  zsmalloc: use class->pages_per_zspage
  zsmalloc: consider ZS_ALMOST_FULL as migrate source
  zsmalloc: partial page ordering within a fullness_list
  zsmalloc: use shrinker to trigger auto-compaction
  zsmalloc: account the number of compacted pages
  zsmalloc/zram: introduce zs_pool_stats api
  zsmalloc: cosmetic compaction code adjustments
  zsmalloc: introduce zs_can_compact() function
  zsmalloc: always keep per-class stats
  zsmalloc: drop unused variable `nr_to_migrate'
  mm/memblock.c: fix comment in __next_mem_range()
  mm/page_alloc.c: fix type information of memoryless node
  memory-hotplug: fix comments in zone_spanned_pages_in_node() and zone_spanned_pages_in_node()
  ...

1 files changed, 6 insertions, 3 deletions

diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
index 76071b14cb93..2c7cca6f26a4 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -147,7 +147,8 @@ static void *locking_thread(void *arg)
 			if (sizeof(page_nr) > sizeof(rand_nr)) {
 				if (random_r(&rand, &rand_nr))
 					fprintf(stderr, "random_r 2 error\n"), exit(1);
-				page_nr |= ((unsigned long) rand_nr) << 32;
+				page_nr |= (((unsigned long) rand_nr) << 16) <<
+					   16;
 			}
 		} else
 			page_nr += 1;
@@ -290,7 +291,8 @@ static void *uffd_poll_thread(void *arg)
 				msg.event), exit(1);
 		if (msg.arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WRITE)
 			fprintf(stderr, "unexpected write fault\n"), exit(1);
-		offset = (char *)msg.arg.pagefault.address - area_dst;
+		offset = (char *)(unsigned long)msg.arg.pagefault.address -
+			 area_dst;
 		offset &= ~(page_size-1);
 		if (copy_page(offset))
 			userfaults++;
@@ -327,7 +329,8 @@ static void *uffd_read_thread(void *arg)
 		if (bounces & BOUNCE_VERIFY &&
 		    msg.arg.pagefault.flags & UFFD_PAGEFAULT_FLAG_WRITE)
 			fprintf(stderr, "unexpected write fault\n"), exit(1);
-		offset = (char *)msg.arg.pagefault.address - area_dst;
+		offset = (char *)(unsigned long)msg.arg.pagefault.address -
+			 area_dst;
 		offset &= ~(page_size-1);
 		if (copy_page(offset))
 			(*this_cpu_userfaults)++;