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From:   Xiaoming Ni <nixiaoming@huawei.com>
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Subject: [PATCH v4 0/3] kernel/notifier.c: intercepting duplicate registrations to avoid infinite loops
Date:   Thu, 19 Sep 2019 10:58:05 +0800
Message-ID: <1568861888-34045-1-git-send-email-nixiaoming@huawei.com>
MIME-Version: 1.0
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Registering the same notifier to a hook repeatedly can cause the hook
list to form a ring or lose other members of the list.
so, need add a check in in notifier_chain_register(),
intercepting duplicate registrations to avoid infinite loops


v1:
* use notifier_chain_cond_register replace notifier_chain_register

v2:
* Add a check in notifier_chain_register() to avoid duplicate registration
* remove notifier_chain_cond_register() to avoid duplicate code 
* remove blocking_notifier_chain_cond_register() to avoid duplicate code

v3:
* Add a cover letter.

v4:
* Add Reviewed-by and adjust the title.

Xiaoming Ni (3):
  kernel/notifier.c: intercepting duplicate registrations to avoid
    infinite loops
  kernel/notifier.c: remove notifier_chain_cond_register()
  kernel/notifier.c: remove blocking_notifier_chain_cond_register()

 include/linux/notifier.h |  4 ----
 kernel/notifier.c        | 41 +++--------------------------------------
 net/sunrpc/rpc_pipe.c    |  2 +-
 3 files changed, 4 insertions(+), 43 deletions(-)

-- 
1.8.5.6