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locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
[platform/kernel/linux-rpi.git]
/
mm
/
slab.h
diff --git
a/mm/slab.h
b/mm/slab.h
index
028cdc7
..
86d7c7d
100644
(file)
--- a/
mm/slab.h
+++ b/
mm/slab.h
@@
-259,7
+259,7
@@
cache_from_memcg_idx(struct kmem_cache *s, int idx)
* memcg_caches issues a write barrier to match this (see
* memcg_create_kmem_cache()).
*/
- cachep =
lockless_dereference
(arr->entries[idx]);
+ cachep =
READ_ONCE
(arr->entries[idx]);
rcu_read_unlock();
return cachep;