Jens,
> We have a pwritev2(2) interface based on passing in flags. Add an
> fcntl interface for querying these flags, and also for setting them
> as well:
>
> F_GET_WRITE_LIFE Returns one of the valid type of write hints,
> like WRITE_HINT_MEDIUM.
>
> F_SET_WRITE_LIFE Pass in a WRITE_HINT_* type to set the
> write life time hint for this file/inode.
> Returns 0 on succes, -1 otherwise.
It seems like an overkill to have different fcntls for different
hints. And since we are expecting more, maybe these should be
F_{GET,SET}_HINT and then the individual flags can be
WRITE_LIFETIME_FOOBAR?
Otherwise OK with the fnctl approach.
--
Martin K. Petersen Oracle Linux Engineering
