slob: make slob_alloc_node() static and remove EXPORT_SYMBOL()

slob_alloc_node() is only used in slob.c.  Remove the EXPORT_SYMBOL and
make slob_alloc_node() static.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/slob.c

diff --git a/mm/slob.c b/mm/slob.c
index 94a7fed..4765f65 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -532,7 +532,7 @@
 	return 0;
 }
 
-void *slob_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
+static void *slob_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
 {
 	void *b;
 
@@ -558,7 +558,6 @@
 	kmemleak_alloc_recursive(b, c->size, 1, c->flags, flags);
 	return b;
 }
-EXPORT_SYMBOL(slob_alloc_node);
 
 void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
 {