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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Tejun Heo <tj@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>, Cgroups <cgroups@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] kernfs: fix kernfs_node_from_dentry()
Date: Fri, 14 Feb 2014 14:04:40 -0800	[thread overview]
Message-ID: <20140214220440.GA3998@kroah.com> (raw)
In-Reply-To: <20140214160301.GE31544@htj.dyndns.org>

On Fri, Feb 14, 2014 at 11:03:01AM -0500, Tejun Heo wrote:
> On Fri, Feb 14, 2014 at 04:57:27PM +0800, Li Zefan wrote:
> > Currently kernfs_node_from_dentry() returns NULL for root dentry,
> > because root_dentry->d_op == NULL.
> > 
> > Due to this bug cgroupstats_build() returns -EINVAL for root cgroup.
> > 
> >   # mount -t cgroup -o cpuacct /cgroup
> >   # Documentation/accounting/getdelays -C /cgroup
> >   fatal reply error,  errno -22
> > 
> > With this fix:
> > 
> >   # Documentation/accounting/getdelays -C /cgroup
> >   sleeping 305, blocked 0, running 1, stopped 0, uninterruptible 1
> > 
> > Signed-off-by: Li Zefan <lizefan@huawei.com>
> 
> Acked-by: Tejun Heo <tj@kernel.org>

Is this needed for 3.14-final or 3.15-rc1?

thanks,

greg k-h

  reply	other threads:[~2014-02-14 22:04 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-14  8:57 [PATCH] kernfs: fix kernfs_node_from_dentry() Li Zefan
2014-02-14  8:57 ` Li Zefan
     [not found] ` <52FDDA77.6070606-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2014-02-14 16:03   ` Tejun Heo
2014-02-14 16:03     ` Tejun Heo
2014-02-14 22:04     ` Greg Kroah-Hartman [this message]
2014-02-14 22:04       ` Tejun Heo

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