diff options
Diffstat (limited to 'fs/mount.h')
| -rw-r--r-- | fs/mount.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/fs/mount.h b/fs/mount.h index 64a858143ff..d64c594be6c 100644 --- a/fs/mount.h +++ b/fs/mount.h @@ -29,6 +29,7 @@ struct mount { struct mount *mnt_parent; struct dentry *mnt_mountpoint; struct vfsmount mnt; + struct rcu_head mnt_rcu; #ifdef CONFIG_SMP struct mnt_pcp __percpu *mnt_pcp; #else @@ -55,7 +56,7 @@ struct mount { int mnt_group_id; /* peer group identifier */ int mnt_expiry_mark; /* true if marked for expiry */ int mnt_pinned; - int mnt_ghosts; + struct path mnt_ex_mountpoint; }; #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */ @@ -76,13 +77,28 @@ static inline int is_mounted(struct vfsmount *mnt) return !IS_ERR_OR_NULL(real_mount(mnt)); } -extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int); +extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *); +extern struct mount *__lookup_mnt_last(struct vfsmount *, struct dentry *); + +extern bool legitimize_mnt(struct vfsmount *, unsigned); static inline void get_mnt_ns(struct mnt_namespace *ns) { atomic_inc(&ns->count); } +extern seqlock_t mount_lock; + +static inline void lock_mount_hash(void) +{ + write_seqlock(&mount_lock); +} + +static inline void unlock_mount_hash(void) +{ + write_sequnlock(&mount_lock); +} + struct proc_mounts { struct seq_file m; struct mnt_namespace *ns; |