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    /*
     *  linux/fs/pnode.h
     *
     * (C) Copyright IBM Corporation 2005.
     *	Released under GPL v2.
     *
     */
    #ifndef _LINUX_PNODE_H
    #define _LINUX_PNODE_H
    
    #include <linux/list.h>
    #include "mount.h"
    
    #define IS_MNT_SHARED(m) ((m)->mnt.mnt_flags & MNT_SHARED)
    #define IS_MNT_SLAVE(m) ((m)->mnt_master)
    #define IS_MNT_NEW(m)  (!(m)->mnt_ns)
    #define CLEAR_MNT_SHARED(m) ((m)->mnt.mnt_flags &= ~MNT_SHARED)
    #define IS_MNT_UNBINDABLE(m) ((m)->mnt.mnt_flags & MNT_UNBINDABLE)
    #define IS_MNT_MARKED(m) ((m)->mnt.mnt_flags & MNT_MARKED)
    #define SET_MNT_MARK(m) ((m)->mnt.mnt_flags |= MNT_MARKED)
    #define CLEAR_MNT_MARK(m) ((m)->mnt.mnt_flags &= ~MNT_MARKED)
    #define IS_MNT_LOCKED(m) ((m)->mnt.mnt_flags & MNT_LOCKED)
    
    #define CL_EXPIRE    		0x01
    #define CL_SLAVE     		0x02
    #define CL_COPY_UNBINDABLE	0x04
    #define CL_MAKE_SHARED 		0x08
    #define CL_PRIVATE 		0x10
    #define CL_SHARED_TO_SLAVE	0x20
    #define CL_UNPRIVILEGED		0x40
    #define CL_COPY_MNT_NS_FILE	0x80
    
    #define CL_COPY_ALL		(CL_COPY_UNBINDABLE | CL_COPY_MNT_NS_FILE)
    
    static inline void set_mnt_shared(struct mount *mnt)
    {
    	mnt->mnt.mnt_flags &= ~MNT_SHARED_MASK;
    	mnt->mnt.mnt_flags |= MNT_SHARED;
    }
    
    void change_mnt_propagation(struct mount *, int);
    int propagate_mnt(struct mount *, struct mountpoint *, struct mount *,
    		struct hlist_head *);
    int propagate_umount(struct list_head *);
    int propagate_mount_busy(struct mount *, int);
    void propagate_mount_unlock(struct mount *);
    void mnt_release_group_id(struct mount *);
    int get_dominating_id(struct mount *mnt, const struct path *root);
    unsigned int mnt_get_count(struct mount *mnt);
    void mnt_set_mountpoint(struct mount *, struct mountpoint *,
    			struct mount *);
    void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp,
    			   struct mount *mnt);
    struct mount *copy_tree(struct mount *, struct dentry *, int);
    bool is_path_reachable(struct mount *, struct dentry *,
    			 const struct path *root);
    int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
    #endif /* _LINUX_PNODE_H */