!1145 [sync] PR-1136: gfs2: Don't deref jdesc in evict

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/1136 
 
PR sync from: ZhaoLong Wang <wangzhaolong1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/ID2Q7S2KSELYENBGS2BVZCEVGEP4WKO2/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/1145

 

Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>