rem: return vfs_unmount(buf, true);
add: return fs_unmount(buf, true);
context: sys_unmount(const char *path){	char buf[SYS_MAX_PATH_LEN+1];	strncpy(buf, path, SYS_MAX_PATH_LEN);	buf[SYS_MAX_PATH_LEN] = 0;	return vfs_unmount(buf, true);}