rem: devfs_remove_vnode(fs_cookie _fs, fs_vnode _v, bool reenter)
add: devfs_remove_vnode(fs_volume _fs, fs_vnode _v, bool reenter)
context: devfs_remove_vnode(fs_cookie _fs, fs_vnode _v, bool reenter){	struct devfs *fs = (struct devfs *)_fs;	struct devfs_vnode *vnode = (struct devfs_vnode *)_v;	TRACE(("devfs_removevnode: remove %p (%Ld), reenter %d\n", vnode, vnode->id, reenter));	if (!reenter)		mutex_lock(&fs->lock);	if (vnode->dir_next) {		// can't remove node if it's linked to the dir		panic("devfs_removevnode: vnode %p asked to be removed is present in dir\n", vnode);	}	devfs_delete_vnode(fs, vnode, false);	if (!reenter)		mutex_unlock(&fs->lock);	return B_OK;}