!8130 v2 CVE-2021-47493

Merge Pull Request from: @ci-robot 
 
PR sync from: liwei <liwei728@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/P4DV47FWMGQTO34BVHU6LAV7XO6HLYML/ 
CVE-2021-47493

Gautham Ananthakrishna (1):
  ocfs2: fix race between searching chunks and release journal_head from
    buffer_head

Joseph Qi (2):
  ocfs2: fix a deadlock when commit trans
  jbd2: export jbd2_journal_[grab|put]_journal_head


-- 
2.25.1
 
https://gitee.com/src-openeuler/kernel/issues/I9RDCV 
 
Link:https://gitee.com/openeuler/kernel/pulls/8130

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>