memcg: fix deadlock between lock_page_cgroup and mapping tree_lock

[sfrench/cifs-2.6.git] / include / linux / swap.h

diff --git a/include/linux/swap.h b/include/linux/swap.h
index 62d81435347a7e2a7fa212fd9ae2b17e3e43224c..d476aad3ff577faf4fe7883dc7b33a3aea99b38a 100644 (file)
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -437,6 +437,11 @@ static inline int mem_cgroup_cache_charge_swapin(struct page *page,
        return 0;
 }
 
+static inline void
+mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent)
+{
+}
+
 #endif /* CONFIG_SWAP */
 #endif /* __KERNEL__*/
 #endif /* _LINUX_SWAP_H */