slub: fix atomic usage in any_slab_objects()

any_slab_objects() does an atomic_read on an atomic_long_t, this
fixes it to use atomic_long_read instead.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/slub.c b/mm/slub.c
index d379b782fc8325cec775bc1daca939bbe06d6d75..a505a828ef411e08f149a413fb37f32da7c47e21 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3762,7 +3762,7 @@ static int any_slab_objects(struct kmem_cache *s)
                if (!n)
                        continue;
 
-               if (atomic_read(&n->total_objects))
+               if (atomic_long_read(&n->total_objects))
                        return 1;
        }
        return 0;