[patch 080/166] mm/slub: add missing annotation for get_map()

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

Sparse reports a warning at get_map()()

 warning: context imbalance in get_map() - wrong count at exit

The root cause is the missing annotation at get_map()
Add the missing __acquires(&object_map_lock) annotation

Link: http://lkml.kernel.org/r/20200214204741.94112-9-jbi.octave@xxxxxxxxx
Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

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

--- a/mm/slub.c~mm-slub-add-missing-annotation-for-get_map
+++ a/mm/slub.c
@@ -449,6 +449,7 @@ static DEFINE_SPINLOCK(object_map_lock);
  * not vanish from under us.
  */
 static unsigned long *get_map(struct kmem_cache *s, struct page *page)
+	__acquires(&object_map_lock)
 {
 	void *p;
 	void *addr = page_address(page);
_




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