!1896 [sync] PR-1853: ring-buffer: Fix deadloop issue on reading trace_pipe

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/1853 
 
PR sync from: Zheng Yejian <zhengyejian1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/Z3U5IIBFKGQEGPESNSJ6KDC2MC7NFUCF/ 
 
https://gitee.com/openeuler/kernel/issues/I7TKEB 
 
Link:https://gitee.com/openeuler/kernel/pulls/1896

 

Reviewed-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>