From: Eric W. Biederman <ebiederm@xmission.com>
Date: Tue, 23 Dec 2014 00:30:08 +0000 (-0600)
Subject: mnt: Add MNT_UMOUNT flag
X-Git-Tag: omap-for-v4.1/fixes-rc1~99^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=590ce4bcbfb4e0462a720a4ad901e84416080bba;p=pandora-kernel.git

mnt: Add MNT_UMOUNT flag

In some instances it is necessary to know if the the unmounting
process has begun on a mount.  Add MNT_UMOUNT to make that reliably
testable.

This fix gets used in fixing locked mounts in MNT_DETACH

Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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