return 0;
return NULL;
static int devfs_follow_link(struct dentry *dentry, struct nameidata *nd){	struct devfs_entry *p = get_devfs_entry_from_vfs_inode(dentry->d_inode);	nd_set_link(nd, p ? p->u.symlink.linkname : ERR_PTR(-ENODEV));	return 0;}				/*  End Function devfs_follow_link  */