[mirror_ubuntu-bionic-kernel.git] / fs / mount.h

#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 - up to 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 */
};

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);
Commit	Line	Data
b2dba1af AV	1	#include <linux/mount.h>
b2dba1af AV	2
68e8a9fe AV	3	struct mnt_pcp {
	4	int mnt_count;
	5	int mnt_writers;
	6	};
	7
7d6fec45	8	struct mount {
1b8e5564	9	struct list_head mnt_hash;
0714a533	10	struct mount *mnt_parent;
a73324da	11	struct dentry *mnt_mountpoint;
7d6fec45	12	struct vfsmount mnt;
68e8a9fe AV	13	#ifdef CONFIG_SMP
	14	struct mnt_pcp __percpu *mnt_pcp;
	15	atomic_t mnt_longterm; /* how many of the refs are longterm */
	16	#else
	17	int mnt_count;
	18	int mnt_writers;
	19	#endif
6b41d536 AV	20	struct list_head mnt_mounts; /* list of children, anchored here */
6b41d536 AV	21	struct list_head mnt_child; /* and going through their mnt_child */
6776db3d AV	22	/* yet to be moved - up to mnt_list */
	23	struct list_head mnt_expire; /* link in fs-specific expiry list */
	24	struct list_head mnt_share; /* circular list of shared mounts */
	25	struct list_head mnt_slave_list;/* list of slave mounts */
	26	struct list_head mnt_slave; /* slave list entry */
32301920	27	struct mount mnt_master; / slave is on master->mnt_slave_list */
143c8c91	28	struct mnt_namespace mnt_ns; / containing namespace */
15169fe7 AV	29	int mnt_id; /* mount identifier */
15169fe7 AV	30	int mnt_group_id; /* peer group identifier */
7d6fec45 AV	31	};
	32
	33	static inline struct mount real_mount(struct vfsmount mnt)
	34	{
	35	return container_of(mnt, struct mount, mnt);
	36	}
	37
676da58d	38	static inline int mnt_has_parent(struct mount *mnt)
b2dba1af	39	{
0714a533	40	return mnt != mnt->mnt_parent;
b2dba1af	41	}
c7105365 AV	42
c7105365 AV	43	extern struct mount __lookup_mnt(struct vfsmount , struct dentry *, int);