openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/config', 0x0, 0x0)
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/config', 0x0, 0x0)
openat$cgroup_int(r0, &(0x7f0000000100)='blkio.throttle.write_bps_device\x00', 0x2, 0x0)