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mm/slub: add missing annotation for get_map()

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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

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200214204741.94112-9-jbi.octave@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jules Irenge 2020-04-06 20:08:15 -07:00 • committed by Linus Torvalds
parent 959a7e136d
commit 31364c2e16
1 changed files with 1 additions and 0 deletions
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1
mm/slub.c
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@ -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);