From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns Date: Wed, 2 Dec 2015 11:58:39 -0500 Message-ID: <20151202165839.GD19878@mtj.duckdns.org> References: <1447703505-29672-1-git-send-email-serge@hallyn.com> <1447703505-29672-8-git-send-email-serge@hallyn.com> <20151124171610.GS17033@mtj.duckdns.org> <20151127051745.GA24521@mail.hallyn.com> <20151130150938.GF3535@mtj.duckdns.org> <20151201040704.GA31067@mail.hallyn.com> <20151201164649.GD12922@mtj.duckdns.org> <20151201215853.GA9153@mail.hallyn.com> <20151202165312.GB19878@mtj.duckdns.org> <20151202165637.GA20840@mail.hallyn.com> Mime-Version: 1.0 Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; bh=QxbkxMh5IhLzwsC7E/oGQglJaOVK08g4g2sW+fTGtmY=; b=SMoQJffs9chsZ4LLYdgdImcNfVEo8Y6jdY/+WUiftk4C55oZj0LwoOMV62wXTJVo6q HIMgrIvgFY0kMo7KbmdFnNR6vGChnvTExbZ9iQd6R33EaEf3Ht1orwX1lmAhla3xjtja 8UlksGkXMa3wQI/p8KnxKSS/O+0/Cstu5bPXJmzxl+aqj9NuY1iJ7RJLfcWguAE3CZB3 ejLPmLvMcQUBiVocf/xSocfN2Sm4Q/Zac0AL9V/kFx9EdrYKMtjAICXjgSzKTCkDTNE6 yuOiOHabhDqYL5pcwJJYKr7bsZ/YOogkRS+JFgM86Gw66YLIQxd7IabmY+W/1v7OzaC+ QKgg== Content-Disposition: inline In-Reply-To: <20151202165637.GA20840-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "Serge E. Hallyn" Cc: serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, adityakali-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, lxc-devel-cunTk1MwBs9qMoObBWhMNEqPaTDuhLve2LY78lusg7I@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org On Wed, Dec 02, 2015 at 10:56:37AM -0600, Serge E. Hallyn wrote: > Can it be flushed when we know that the cgroup is being pinned by > a css_set? (There's either a task or a cgroup_namespace pinning it > or we wouldn't get here) Yeap, it can be flushed. There's no ref coming out of cgroup to the vfs objects. Thanks. -- tejun