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From: Greg KH <gregkh@linuxfoundation.org>
To: Xiaoming Ni <nixiaoming@huawei.com>
Cc: adobriyan@gmail.com, akpm@linux-foundation.org,
	anna.schumaker@netapp.com, arjan@linux.intel.com,
	bfields@fieldses.org, chuck.lever@oracle.com,
	davem@davemloft.net, jlayton@kernel.org, luto@kernel.org,
	mingo@kernel.org, Nadia.Derbey@bull.net,
	paulmck@linux.vnet.ibm.com, semen.protsenko@linaro.org,
	stable@kernel.org, stern@rowland.harvard.edu, tglx@linutronix.de,
	torvalds@linux-foundation.org, trond.myklebust@hammerspace.com,
	viresh.kumar@linaro.org, vvs@virtuozzo.com,
	alex.huangjianhui@huawei.com, dylix.dailei@huawei.com,
	linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org,
	netdev@vger.kernel.org
Subject: Re: [PATCH v3 0/3] kernel/notifier.c: avoid duplicate registration
Date: Wed, 10 Jul 2019 07:56:28 +0200
Message-ID: <20190710055628.GB5778@kroah.com> (raw)
In-Reply-To: <1562728147-30251-1-git-send-email-nixiaoming@huawei.com>

On Wed, Jul 10, 2019 at 11:09:07AM +0800, Xiaoming Ni wrote:
> Registering the same notifier to a hook repeatedly can cause the hook
> list to form a ring or lose other members of the list.

Then don't do that :)

Is there any in-kernel users that do do this?  If so, please just fix
them.

thanks,

greg k-h

  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-10  3:09 Xiaoming Ni
2019-07-10  5:49 ` Vasily Averin
2019-07-11  1:55   ` Nixiaoming
2019-07-11 13:57     ` Vasily Averin
2019-07-12 13:11       ` Xiaoming Ni
2019-07-12 14:07         ` gregkh
2019-07-14  2:45           ` Xiaoming Ni
2019-07-15  5:38             ` Vasily Averin
2019-07-16  2:00               ` Xiaoming Ni
2019-07-16 10:20                 ` Vasily Averin
2019-07-16 14:07                   ` Xiaoming Ni
2019-07-17 11:15                     ` Vasily Averin
2019-09-10  3:57                       ` Xiaoming Ni
2019-07-10  5:56 ` Greg KH [this message]
2019-07-11  1:32   ` Nixiaoming

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