Hi Li, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.16-rc7] [cannot apply to next-20180327] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Li-RongQing/mm-list_lru-replace-spinlock-with-RCU-in-__list_lru_count_one/20180328-042620 reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> mm/list_lru.c:59:15: sparse: incompatible types in comparison expression (different address spaces) mm/list_lru.c:61:24: sparse: incompatible types in comparison expression (different address spaces) >> mm/list_lru.c:59:15: sparse: incompatible types in comparison expression (different address spaces) mm/list_lru.c:61:24: sparse: incompatible types in comparison expression (different address spaces) >> mm/list_lru.c:59:15: sparse: incompatible types in comparison expression (different address spaces) mm/list_lru.c:61:24: sparse: incompatible types in comparison expression (different address spaces) >> mm/list_lru.c:59:15: sparse: incompatible types in comparison expression (different address spaces) mm/list_lru.c:61:24: sparse: incompatible types in comparison expression (different address spaces) >> mm/list_lru.c:59:15: sparse: incompatible types in comparison expression (different address spaces) mm/list_lru.c:61:24: sparse: incompatible types in comparison expression (different address spaces) >> mm/list_lru.c:59:15: sparse: incompatible types in comparison expression (different address spaces) mm/list_lru.c:61:24: sparse: incompatible types in comparison expression (different address spaces) vim +59 mm/list_lru.c 51 52 static inline struct list_lru_one * 53 list_lru_from_memcg_idx(struct list_lru_node *nlru, int idx) 54 { 55 struct list_lru_memcg *tmp; 56 57 WARN_ON_ONCE(!rcu_read_lock_held()); 58 > 59 tmp = rcu_dereference(nlru->memcg_lrus); 60 if (tmp && idx >= 0) 61 return rcu_dereference(tmp->lru[idx]); 62 63 return &nlru->lru; 64 } 65 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
