23 static int get_name(const struct path *path, char *name, struct dentry *child);
26 static int exportfs_get_name(struct vfsmount *mnt, struct dentry *dir,  in exportfs_get_name()
27 		char *name, struct dentry *child)  in exportfs_get_name()
30 	struct path path = {.mnt = mnt, .dentry = dir};  in exportfs_get_name()
41 static struct dentry *
42 find_acceptable_alias(struct dentry *result,  in find_acceptable_alias()
43 		int (*acceptable)(void *context, struct dentry *dentry),  in find_acceptable_alias()  argument
46 	struct dentry *dentry, *toput = NULL;  in find_acceptable_alias()  local
54 	hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {  in find_acceptable_alias()
55 		dget(dentry);  in find_acceptable_alias()
59 		if (dentry != result && acceptable(context, dentry)) {  in find_acceptable_alias()
61 			return dentry;  in find_acceptable_alias()
64 		toput = dentry;  in find_acceptable_alias()
73 static bool dentry_connected(struct dentry *dentry)  in dentry_connected()  argument
75 	dget(dentry);  in dentry_connected()
76 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in dentry_connected()
77 		struct dentry *parent = dget_parent(dentry);  in dentry_connected()
79 		dput(dentry);  in dentry_connected()
80 		if (IS_ROOT(dentry)) {  in dentry_connected()
84 		dentry = parent;  in dentry_connected()
86 	dput(dentry);  in dentry_connected()
90 static void clear_disconnected(struct dentry *dentry)  in clear_disconnected()  argument
92 	dget(dentry);  in clear_disconnected()
93 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in clear_disconnected()
94 		struct dentry *parent = dget_parent(dentry);  in clear_disconnected()
96 		WARN_ON_ONCE(IS_ROOT(dentry));  in clear_disconnected()
98 		spin_lock(&dentry->d_lock);  in clear_disconnected()
99 		dentry->d_flags &= ~DCACHE_DISCONNECTED;  in clear_disconnected()
100 		spin_unlock(&dentry->d_lock);  in clear_disconnected()
102 		dput(dentry);  in clear_disconnected()
103 		dentry = parent;  in clear_disconnected()
105 	dput(dentry);  in clear_disconnected()
120 static struct dentry *reconnect_one(struct vfsmount *mnt,  in reconnect_one()
121 		struct dentry *dentry, char *nbuf)  in reconnect_one()  argument
123 	struct dentry *parent;  in reconnect_one()
124 	struct dentry *tmp;  in reconnect_one()
128 	inode_lock(dentry->d_inode);  in reconnect_one()
130 		parent = mnt->mnt_sb->s_export_op->get_parent(dentry);  in reconnect_one()
131 	inode_unlock(dentry->d_inode);  in reconnect_one()
135 			__func__, dentry->d_inode->i_ino, PTR_ERR(parent));  in reconnect_one()
140 		dentry->d_inode->i_ino, parent->d_inode->i_ino);  in reconnect_one()
141 	err = exportfs_get_name(mnt, parent, nbuf, dentry);  in reconnect_one()
152 	if (tmp != dentry) {  in reconnect_one()
163 	if (IS_ROOT(dentry)) {  in reconnect_one()
187 	if (!dentry_connected(dentry))  in reconnect_one()
210 reconnect_path(struct vfsmount *mnt, struct dentry *target_dir, char *nbuf)  in reconnect_path()
212 	struct dentry *dentry, *parent;  in reconnect_path()  local
214 	dentry = dget(target_dir);  in reconnect_path()
216 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in reconnect_path()
217 		BUG_ON(dentry == mnt->mnt_sb->s_root);  in reconnect_path()
219 		if (IS_ROOT(dentry))  in reconnect_path()
220 			parent = reconnect_one(mnt, dentry, nbuf);  in reconnect_path()
222 			parent = dget_parent(dentry);  in reconnect_path()
226 		dput(dentry);  in reconnect_path()
229 		dentry = parent;  in reconnect_path()
231 	dput(dentry);  in reconnect_path()
275 static int get_name(const struct path *path, char *name, struct dentry *child)  in get_name()
278 	struct inode *dir = path->dentry->d_inode;  in get_name()
284 		.dentry = child,  in get_name()
395 int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len,  in exportfs_encode_fh()  argument
399 	struct dentry *p = NULL;  in exportfs_encode_fh()
400 	struct inode *inode = dentry->d_inode, *parent = NULL;  in exportfs_encode_fh()
403 		p = dget_parent(dentry);  in exportfs_encode_fh()
418 struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,  in exportfs_decode_fh()
420 		int (*acceptable)(void *, struct dentry *), void *context)  in exportfs_decode_fh()  argument
423 	struct dentry *result, *alias;  in exportfs_decode_fh()
472 		struct dentry *target_dir, *nresult;  in exportfs_decode_fh()