In mainline rootfs is marked always as MNT_LOCKED,
sys_umount checks this flag and fails its processing.
Our kernels lacks for MNT_LOCKED flag, so we use another kind of check
to prevent incorrect operation.
v2: use mnt_has_parent()
https://jira.sw.ru/browse/PSBM-46437
Signed-off-by: Vasily Aver
On Thu, Jun 09, 2016 at 10:30:48AM +0300, Vasily Averin wrote:
> In mainline rootfs is marked always as MNT_LOCKED,
> sys_umount checks this flag and fails its processing.
> Our kernels lacks for MNT_LOCKED flag, so we use another kind of check
> to prevent incorrect operation.
>
> v2: use mnt_has
