22 static int get_name(const struct path *path, char *name, struct dentry *child);
25 static int exportfs_get_name(struct vfsmount *mnt, struct dentry *dir,  in exportfs_get_name()
26 		char *name, struct dentry *child)  in exportfs_get_name()
29 	struct path path = {.mnt = mnt, .dentry = dir};  in exportfs_get_name()
40 static struct dentry *
41 find_acceptable_alias(struct dentry *result,  in find_acceptable_alias()
42 		int (*acceptable)(void *context, struct dentry *dentry),  in find_acceptable_alias()  argument
45 	struct dentry *dentry, *toput = NULL;  in find_acceptable_alias()  local
53 	hlist_for_each_entry(dentry, &inode->i_dentry, d_u.d_alias) {  in find_acceptable_alias()
54 		dget(dentry);  in find_acceptable_alias()
58 		if (dentry != result && acceptable(context, dentry)) {  in find_acceptable_alias()
60 			return dentry;  in find_acceptable_alias()
63 		toput = dentry;  in find_acceptable_alias()
72 static bool dentry_connected(struct dentry *dentry)  in dentry_connected()  argument
74 	dget(dentry);  in dentry_connected()
75 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in dentry_connected()
76 		struct dentry *parent = dget_parent(dentry);  in dentry_connected()
78 		dput(dentry);  in dentry_connected()
79 		if (IS_ROOT(dentry)) {  in dentry_connected()
83 		dentry = parent;  in dentry_connected()
85 	dput(dentry);  in dentry_connected()
89 static void clear_disconnected(struct dentry *dentry)  in clear_disconnected()  argument
91 	dget(dentry);  in clear_disconnected()
92 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in clear_disconnected()
93 		struct dentry *parent = dget_parent(dentry);  in clear_disconnected()
95 		WARN_ON_ONCE(IS_ROOT(dentry));  in clear_disconnected()
97 		spin_lock(&dentry->d_lock);  in clear_disconnected()
98 		dentry->d_flags &= ~DCACHE_DISCONNECTED;  in clear_disconnected()
99 		spin_unlock(&dentry->d_lock);  in clear_disconnected()
101 		dput(dentry);  in clear_disconnected()
102 		dentry = parent;  in clear_disconnected()
104 	dput(dentry);  in clear_disconnected()
119 static struct dentry *reconnect_one(struct vfsmount *mnt,  in reconnect_one()
120 		struct dentry *dentry, char *nbuf)  in reconnect_one()  argument
122 	struct dentry *parent;  in reconnect_one()
123 	struct dentry *tmp;  in reconnect_one()
127 	mutex_lock(&dentry->d_inode->i_mutex);  in reconnect_one()
129 		parent = mnt->mnt_sb->s_export_op->get_parent(dentry);  in reconnect_one()
130 	mutex_unlock(&dentry->d_inode->i_mutex);  in reconnect_one()
134 			__func__, dentry->d_inode->i_ino, PTR_ERR(parent));  in reconnect_one()
139 		dentry->d_inode->i_ino, parent->d_inode->i_ino);  in reconnect_one()
140 	err = exportfs_get_name(mnt, parent, nbuf, dentry);  in reconnect_one()
153 	if (tmp != dentry) {  in reconnect_one()
158 	if (IS_ROOT(dentry)) {  in reconnect_one()
182 	if (!dentry_connected(dentry))  in reconnect_one()
205 reconnect_path(struct vfsmount *mnt, struct dentry *target_dir, char *nbuf)  in reconnect_path()
207 	struct dentry *dentry, *parent;  in reconnect_path()  local
209 	dentry = dget(target_dir);  in reconnect_path()
211 	while (dentry->d_flags & DCACHE_DISCONNECTED) {  in reconnect_path()
212 		BUG_ON(dentry == mnt->mnt_sb->s_root);  in reconnect_path()
214 		if (IS_ROOT(dentry))  in reconnect_path()
215 			parent = reconnect_one(mnt, dentry, nbuf);  in reconnect_path()
217 			parent = dget_parent(dentry);  in reconnect_path()
221 		dput(dentry);  in reconnect_path()
224 		dentry = parent;  in reconnect_path()
226 	dput(dentry);  in reconnect_path()
270 static int get_name(const struct path *path, char *name, struct dentry *child)  in get_name()
273 	struct inode *dir = path->dentry->d_inode;  in get_name()
279 		.dentry = child,  in get_name()
389 int exportfs_encode_fh(struct dentry *dentry, struct fid *fid, int *max_len,  in exportfs_encode_fh()  argument
393 	struct dentry *p = NULL;  in exportfs_encode_fh()
394 	struct inode *inode = dentry->d_inode, *parent = NULL;  in exportfs_encode_fh()
397 		p = dget_parent(dentry);  in exportfs_encode_fh()
412 struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,  in exportfs_decode_fh()
414 		int (*acceptable)(void *, struct dentry *), void *context)  in exportfs_decode_fh()  argument
417 	struct dentry *result, *alias;  in exportfs_decode_fh()
457 		struct dentry *target_dir, *nresult;  in exportfs_decode_fh()