# {"procs":1,"slowdown":1,"sandbox":"","sandbox_arg":0,"close_fds":false,"callcomments":true}
openat$nullb(0xffffffffffffff9c, &(0x7f0000000080), 0x4000000004182, 0x0)
mknodat$loop(0xffffffffffffff9c, &(0x7f0000000180)='./file2\x00', 0x6000, 0x0)
r0 = open(&(0x7f0000000040)='./file2\x00', 0x1, 0x104)
ioctl$BTRFS_IOC_DEFRAG(r0, 0x4c00, 0x3)