!947 locking/rwsem: Prevent potential lock starvation

Merge Pull Request from: @ci-robot 
 
PR sync from:  Yang Yingliang <yangyingliang@huawei.com>
 https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/thread/YNL7N26QMD5Q6UDTPNELYGIOXBXP4EWZ/ 
Prevent potential lock starvation by read lock.

Peter Zijlstra (1):
  locking/rwsem: Better collate rwsem_read_trylock()

Waiman Long (2):
  locking/rwsem: Pass the current atomic count to
    rwsem_down_read_slowpath()
  locking/rwsem: Prevent potential lock starvation


-- 
2.25.1
 
 
Link:https://gitee.com/openeuler/kernel/pulls/947

 

Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>