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authorEric W. Biederman <ebiederm@xmission.com>2014-12-22 18:30:08 -0600
committerEric W. Biederman <ebiederm@xmission.com>2015-04-02 20:34:18 -0500
commit590ce4bcbfb4e0462a720a4ad901e84416080bba (patch)
treee5597263904eda7b9e869e57851c6f5dd6737e47 /fs/pnode.c
parentc003b26ff98ca04a180ff34c38c007a3998d62f9 (diff)
downloadlinux-590ce4bcbfb4e0462a720a4ad901e84416080bba.tar.bz2
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>
Diffstat (limited to 'fs/pnode.c')
-rw-r--r--fs/pnode.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/pnode.c b/fs/pnode.c
index bf012af709dd..ac3aa0d43b90 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -384,6 +384,7 @@ static void __propagate_umount(struct mount *mnt)
if (child && list_empty(&child->mnt_mounts)) {
list_del_init(&child->mnt_child);
hlist_del_init_rcu(&child->mnt_hash);
+ child->mnt.mnt_flags |= MNT_UMOUNT;
list_move_tail(&child->mnt_list, &mnt->mnt_list);
}
}