Bug#911281: disorderfs: can not update only mtime

[Bernhard M. Wiedemann]

Package: disorderfs
Version: 0.5.4
Severity: normal

Dear Maintainer,

   * I found that files extracted by tar into a disorderfs did not
     have their original mtime restored by futimens / utimensat syscalls
   * Same effect for touch -m -d at 123 $FILE or touch -a
     that left mtime and atime unchanged
   * Both use the special UTIME_OMIT value in a tv_nsec field
   * But using touch to update both atime and mtime works fine.

-- System Information:
openSUSE Release: 15.0
Architecture: amd64 (x86_64)

Kernel: Linux 4.12.14 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash