24 static int get_name(const struct path *path, char *name, struct dentry *child);
27 static int exportfs_get_name(struct vfsmount *mnt, struct dentry *dir,  in exportfs_get_name()
28 		char *name, struct dentry *child)  in exportfs_get_name()
31 	struct path path = {.mnt = mnt, .dentry = dir};  in exportfs_get_name()
42 static struct dentry *
43 find_acceptable_alias(struct dentry *result,  in find_acceptable_alias()
44 		int (*acceptable)(void *context, struct dentry *dentry),  in find_acceptable_alias()  argument
47 	struct dentry *dentry, *toput = NULL;  in find_acceptable_alias()  local
55 	hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {  in find_acceptable_alias()
56 		dget(dentry);  in find_acceptable_alias()
60 		if (dentry != result && acceptable(context, dentry)) {  in find_acceptable_alias()
62 			return dentry;  in find_acceptable_alias()
65 		toput = dentry;  in find_acceptable_alias()
74 static bool dentry_connected(struct dentry *dentry)  in dentry_connected()  argument
76 	dget(dentry);  in dentry_connected()
77 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in dentry_connected()
78 		struct dentry *parent = dget_parent(dentry);  in dentry_connected()
80 		dput(dentry);  in dentry_connected()
81 		if (dentry == parent) {  in dentry_connected()
85 		dentry = parent;  in dentry_connected()
87 	dput(dentry);  in dentry_connected()
91 static void clear_disconnected(struct dentry *dentry)  in clear_disconnected()  argument
93 	dget(dentry);  in clear_disconnected()
94 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in clear_disconnected()
95 		struct dentry *parent = dget_parent(dentry);  in clear_disconnected()
97 		WARN_ON_ONCE(IS_ROOT(dentry));  in clear_disconnected()
99 		spin_lock(&dentry->d_lock);  in clear_disconnected()
100 		dentry->d_flags &= ~DCACHE_DISCONNECTED;  in clear_disconnected()
101 		spin_unlock(&dentry->d_lock);  in clear_disconnected()
103 		dput(dentry);  in clear_disconnected()
104 		dentry = parent;  in clear_disconnected()
106 	dput(dentry);  in clear_disconnected()
121 static struct dentry *reconnect_one(struct vfsmount *mnt,  in reconnect_one()
122 		struct dentry *dentry, char *nbuf)  in reconnect_one()  argument
124 	struct dentry *parent;  in reconnect_one()
125 	struct dentry *tmp;  in reconnect_one()
129 	inode_lock(dentry->d_inode);  in reconnect_one()
131 		parent = mnt->mnt_sb->s_export_op->get_parent(dentry);  in reconnect_one()
132 	inode_unlock(dentry->d_inode);  in reconnect_one()
136 			dentry->d_inode->i_ino, PTR_ERR(parent));  in reconnect_one()
141 		dentry->d_inode->i_ino, parent->d_inode->i_ino);  in reconnect_one()
142 	err = exportfs_get_name(mnt, parent, nbuf, dentry);  in reconnect_one()
154 	if (tmp != dentry) {  in reconnect_one()
165 	if (IS_ROOT(dentry)) {  in reconnect_one()
189 	if (!dentry_connected(dentry))  in reconnect_one()
212 reconnect_path(struct vfsmount *mnt, struct dentry *target_dir, char *nbuf)  in reconnect_path()
214 	struct dentry *dentry, *parent;  in reconnect_path()  local
216 	dentry = dget(target_dir);  in reconnect_path()
218 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in reconnect_path()
219 		BUG_ON(dentry == mnt->mnt_sb->s_root);  in reconnect_path()
221 		if (IS_ROOT(dentry))  in reconnect_path()
222 			parent = reconnect_one(mnt, dentry, nbuf);  in reconnect_path()
224 			parent = dget_parent(dentry);  in reconnect_path()
228 		dput(dentry);  in reconnect_path()
231 		dentry = parent;  in reconnect_path()
233 	dput(dentry);  in reconnect_path()
276 static int get_name(const struct path *path, char *name, struct dentry *child)  in get_name()
279 	struct inode *dir = path->dentry->d_inode;  in get_name()
285 		.dentry = child,  in get_name()
422 int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len,  in exportfs_encode_fh()  argument
426 	struct dentry *p = NULL;  in exportfs_encode_fh()
427 	struct inode *inode = dentry->d_inode, *parent = NULL;  in exportfs_encode_fh()
430 		p = dget_parent(dentry);  in exportfs_encode_fh()
445 struct dentry *
448 		       int (*acceptable)(void *, struct dentry *),  in exportfs_decode_fh_raw()  argument
452 	struct dentry *result, *alias;  in exportfs_decode_fh_raw()
499 		struct dentry *target_dir, *nresult;  in exportfs_decode_fh_raw()
594 struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,  in exportfs_decode_fh()
596 				  int (*acceptable)(void *, struct dentry *),  in exportfs_decode_fh()  argument
599 	struct dentry *ret;  in exportfs_decode_fh()