I'll attach 11877.4.diff:

- Docu change (i hope to be better)
- Kept NetBSD after looking into
    http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/kern/vfs_syscalls.c?rev=1.423&content-type=text/x-cvsweb-markup&only_with_tag=MAIN
  because fsync_range() with FDISKSYNC set causes a FSYNC_CACHE
  flag to be passed through to VOP_FSYNC() in addition to
  FSYNC_WAIT, which is what plain fsync() passes exclusively.
  (I have not furtherly discovered that.  FDISKSYNC was introduced
  2005.  I believe existence of such a flag will sooner or later
  force somebody to make a difference in wether it is set or not.)
- Drop of AIX.  According to the systems manual (link in
  msg134213) there does not seem to be a difference in between
  fsync() and fsync_range()
- Drop of Linux sync_file_range() (see messages above).
  By the way, does Linux still require