slub: Fix signedness warnings

The bit-ops routines require its arg to be a pointer to unsigned long.
This leads sparse to complain about different signedness as follows:

 mm/slub.c:2425:49: warning: incorrect type in argument 2 (different signedness)
 mm/slub.c:2425:49:    expected unsigned long volatile *addr
 mm/slub.c:2425:49:    got long *map

Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

diff --git a/mm/slub.c b/mm/slub.c
index aad00ba486f2ec19b4b9b460c6ea9b2e2e3cb177..ac236b1ced169966724b5abded2ec642513256e6 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2433,9 +2433,8 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page,
 #ifdef CONFIG_SLUB_DEBUG
        void *addr = page_address(page);
        void *p;
-       long *map = kzalloc(BITS_TO_LONGS(page->objects) * sizeof(long),
-                           GFP_ATOMIC);
-
+       unsigned long *map = kzalloc(BITS_TO_LONGS(page->objects) *
+                                    sizeof(long), GFP_ATOMIC);
        if (!map)
                return;
        slab_err(s, page, "%s", text);
@@ -3660,7 +3659,7 @@ static int add_location(struct loc_track *t, struct kmem_cache *s,
 
 static void process_slab(struct loc_track *t, struct kmem_cache *s,
                struct page *page, enum track_item alloc,
-               long *map)
+               unsigned long *map)
 {
        void *addr = page_address(page);
        void *p;