#include <linux/mount.h>

  #include <linux/seq_file.h>
  #include <linux/poll.h>
  
  struct mnt_namespace {
  	atomic_t		count;

  	struct mount *	root;

  	struct list_head	list;
  	wait_queue_head_t poll;
  	int event;
  };

  struct mnt_pcp {
  	int mnt_count;
  	int mnt_writers;
  };

  struct mount {

  	struct list_head mnt_hash;

  	struct mount *mnt_parent;

  	struct dentry *mnt_mountpoint;

  	struct vfsmount mnt;

  #ifdef CONFIG_SMP
  	struct mnt_pcp __percpu *mnt_pcp;
  	atomic_t mnt_longterm;		/* how many of the refs are longterm */
  #else
  	int mnt_count;
  	int mnt_writers;
  #endif

  	struct list_head mnt_mounts;	/* list of children, anchored here */
  	struct list_head mnt_child;	/* and going through their mnt_child */

  	struct list_head mnt_instance;	/* mount instance on sb->s_mounts */

  	const char *mnt_devname;	/* Name of device e.g. /dev/dsk/hda1 */

  	struct list_head mnt_list;

  	struct list_head mnt_expire;	/* link in fs-specific expiry list */
  	struct list_head mnt_share;	/* circular list of shared mounts */
  	struct list_head mnt_slave_list;/* list of slave mounts */
  	struct list_head mnt_slave;	/* slave list entry */

  	struct mount *mnt_master;	/* slave is on master->mnt_slave_list */

  	struct mnt_namespace *mnt_ns;	/* containing namespace */

  #ifdef CONFIG_FSNOTIFY
  	struct hlist_head mnt_fsnotify_marks;
  	__u32 mnt_fsnotify_mask;
  #endif

  	int mnt_id;			/* mount identifier */
  	int mnt_group_id;		/* peer group identifier */

  	int mnt_expiry_mark;		/* true if marked for expiry */
  	int mnt_pinned;
  	int mnt_ghosts;

  };
  
  static inline struct mount *real_mount(struct vfsmount *mnt)
  {
  	return container_of(mnt, struct mount, mnt);
  }

  static inline int mnt_has_parent(struct mount *mnt)

  {

  	return mnt != mnt->mnt_parent;

  }

  
  extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);

  
  static inline void get_mnt_ns(struct mnt_namespace *ns)
  {
  	atomic_inc(&ns->count);
  }
  
  struct proc_mounts {
  	struct seq_file m; /* must be the first element */
  	struct mnt_namespace *ns;
  	struct path root;
  	int (*show)(struct seq_file *, struct vfsmount *);
  };
  
  extern const struct seq_operations mounts_op;