Re: [PATCH v2] cgroup: don't destroy the default root
From: Tejun Heo
Date: Wed Jun 04 2014 - 21:22:36 EST
On Wed, Jun 04, 2014 at 04:48:15PM +0800, Li Zefan wrote:
> The default root is allocated and initialized at boot phase, so we
> shouldn't destroy the default root when it's umounted, otherwise
> it will lead to disaster.
> Just try mount and then umount the default root, and the kernel will
> crash immediately.
> - No need to check for CSS_NO_REF in cgroup_get/put(). (Tejun)
> - Better call cgroup_put() for the default root in kill_sb(). (Tejun)
> - Add a comment.
> Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
Applied to cgroup/for-3.16.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/