fsync: giving up on dirty
0xc4e5a880: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 850 mountedhere 0xc4dfab00
    flags ()
    v_object 0xc103d318 ref 0 pages 9511
     lock type devfs: EXCL (count 1) by thread 0xc550e480 (pid 42749)
        dev ar0s1f
fsync: giving up on dirty
0xc4e5a880: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 851 mountedhere 0xc4dfab00
    flags ()
    v_object 0xc103d318 ref 0 pages 9511
     lock type devfs: EXCL (count 1) by thread 0xc550e480 (pid 42749)
        dev ar0s1f