[patch 081/166] mm/slub: add missing annotation for put_map()

Andrew Morton
2020-04-07T03:08:21Z

From: Jules Irenge <jbi.octave@gmail.com>
Subject: mm/slub: add missing annotation for put_map()

Sparse reports a warning at put_map()()

warning: context imbalance in put_map() - unexpected unlock

The root cause is the missing annotation at put_map()
Add the missing __releases(&object_map_lock) annotation

Link: http://lkml.kernel.org/r/20200214204741.94112-10-jbi.octave@gmail.com
Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

mm/slub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/slub.c~mm-slub-add-missing-annotation-for-put_map
+++ a/mm/slub.c
@@ -466,7 +466,7 @@ static unsigned long *get_map(struct kme
return object_map;
}

-static void put_map(unsigned long *map)
+static void put_map(unsigned long *map) __releases(&object_map_lock)
{
VM_BUG_ON(map != object_map);
lockdep_assert_held(&object_map_lock);
_