Andrey, please review.

--
Best regards,

Konstantin Khorenko,
Virtuozzo Linux Kernel Team

On 06/06/2016 03:45 PM, 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.

https://jira.sw.ru/browse/PSBM-46437

Signed-off-by: Vasily Averin <[email protected]>

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