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    SubjectRe: [PATCH 03/34] teach move_mount(2) to work with OPEN_TREE_CLONE [ver #12]
    Date
    The attached change seems to fix the lazy-umount problem.

    David
    ---
    diff --git a/fs/namespace.c b/fs/namespace.c
    index 5adeeea2a4d9..d43f0fa152e9 100644
    --- a/fs/namespace.c
    +++ b/fs/namespace.c
    @@ -2472,7 +2472,7 @@ static int do_move_mount(struct path *old_path, struct path *new_path)
    if (old->mnt_ns && !attached)
    goto out1;

    - if (old->mnt.mnt_flags & MNT_LOCKED)
    + if (old->mnt.mnt_flags & (MNT_LOCKED | MNT_UMOUNT))
    goto out1;

    if (old_path->dentry != old_path->mnt->mnt_root)
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