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); _
