From: Greg KH <greg@kroah.com>
To: Yihao Wu <wuyihao@linux.alibaba.com>
Cc: linux-nfs@vger.kernel.org, Jeff Layton <jlayton@kernel.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
stable@vger.kernel.org, Joseph Qi <joseph.qi@linux.alibaba.com>,
caspar@linux.alibaba.com
Subject: Re: [PATCH 2/2] NFSv4.1: Fix bug only the first CB_NOTIFY_LOCK is handled
Date: Wed, 8 May 2019 11:23:59 +0200 [thread overview]
Message-ID: <20190508092359.GA2361@kroah.com> (raw)
In-Reply-To: <cdba66b5-29a3-e37b-1e0f-808c171d09c3@linux.alibaba.com>
On Wed, May 08, 2019 at 05:15:03PM +0800, Yihao Wu wrote:
> When the first CB_NOTIFY_LOCK wakes a waiter, it can still fail to
> acquire the lock. Then it might goes to sleep again. However it's removed
> from the wait queue and not put back. So when the CB_NOTIFY_LOCK comes
> again, it fails to wake this waiter.
>
> Signed-off-by: Yihao Wu <wuyihao@linux.alibaba.com>
> ---
> fs/nfs/nfs4proc.c | 4 ++++
> 1 file changed, 4 insertions(+)
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.
</formletter>
next prev parent reply other threads:[~2019-05-08 9:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-08 9:11 [PATCH 0/2] Fix two bugs CB_NOTIFY_LOCK failing to wake a water Yihao Wu
2019-05-08 9:13 ` [PATCH 1/2] NFSv4.1: Again fix a race where CB_NOTIFY_LOCK fails to wake a waiter Yihao Wu
2019-05-08 9:15 ` [PATCH 2/2] NFSv4.1: Fix bug only the first CB_NOTIFY_LOCK is handled Yihao Wu
2019-05-08 9:23 ` Greg KH [this message]
2019-05-08 9:19 ` [PATCH 1/2] NFSv4.1: Again fix a race where CB_NOTIFY_LOCK fails to wake a waiter Greg KH
2019-05-08 9:39 ` Yihao Wu
2019-05-08 12:24 ` Jeff Layton
2019-05-08 18:18 ` Yihao Wu
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