!4627 [sync] PR-4531: fs:/dcache.c: fix negative dentry flag warning in dentry_free

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/4531 
 
PR sync from: Long Li <leo.lilong@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/ANTY7AGD6HT5WNQYJ53JQUBRHHSNZDAD/ 
 
https://gitee.com/openeuler/kernel/issues/I8WPQW 
 
Link:https://gitee.com/openeuler/kernel/pulls/4627

 

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