summaryrefslogblamecommitdiffstats
path: root/fs/mount.h
blob: c5fc3f7a9580dca3ae740217fbb5e84b548165e2 (plain) (tree)
1
2
3
4
5
6
7
8
9

                        




                        
              
                                  
                                 
                                      
                            






                                                                               

                                                                               

                                                                               
                                  



                                                                             
                                                                                
                                                                  

                                                                   


                                                                       






                                                            
                                                   
 
                                      
 

                                                                           
#include <linux/mount.h>

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 */
	/* yet to be moved - fsnotify ones go here */
	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 */
	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);