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
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxx>
---
mm/slub.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index 13fffe1..e137688 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2414,9 +2414,8 @@ 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);
@@ -3635,7 +3634,7 @@ 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;
--
1.7.2.2
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