.. option:: fdatasync=int
Like :option:`fsync` but uses :manpage:`fdatasync(2)` to only sync data and
- not metadata blocks. In Windows, FreeBSD, and DragonFlyBSD there is no
+ not metadata blocks. In Windows, FreeBSD, DragonFlyBSD or OSX there is no
:manpage:`fdatasync(2)` so this falls back to using :manpage:`fsync(2)`.
Defaults to 0, which means fio does not periodically issue and wait for a
data-only sync to complete.