mkfs.f2fs.8: Better document the -g argument.

To use Android defaults, you must use `-g android`. However, the man
page previously implied that you need only use `-g`.

Since you must specify `android`, I figured it would be appropriate
to name that field `default-options` in the man page. If there was ever
a reason to have a different set of default options, the `-g` option
could be used with a new `default-options` value, i.e. `-g example`.

Signed-off-by: John A. Leuenhagen <>
Signed-off-by: Jaegeuk Kim <>
1 file changed