pnode.h

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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 CL_EXPIRE           0x01
#define CL_SLAVE            0x02
#define CL_COPY_ALL         0x04
#define CL_MAKE_SHARED      0x08
#define CL_PRIVATE      0x10

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 dentry *, struct mount *,
        struct list_head *);
int propagate_umount(struct list_head *);
int propagate_mount_busy(struct mount *, int);
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 dentry *,
            struct mount *);
void release_mounts(struct list_head *);
void umount_tree(struct mount *, int, struct list_head *);
struct mount *copy_tree(struct mount *, struct dentry *, int);
bool is_path_reachable(struct mount *, struct dentry *,
             const struct path *root);
#endif /* _LINUX_PNODE_H */