On Sat, Jun 17, 2017 at 05:09:44AM +0100, Al Viro wrote: > On Thu, Jun 15, 2017 at 10:59:56AM -0500, Goldwyn Rodrigues wrote: > > static inline int kiocb_set_rw_flags(struct kiocb *ki, int flags) > > { > > - if (unlikely(flags & ~(RWF_HIPRI | RWF_DSYNC | RWF_SYNC))) > > + if (unlikely(flags & ~(RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT))) > > Minor nit: that calls for something like > if (unlikely(flags & ~RWF_ALL) > > return -EOPNOTSUPP; > > with corresponding definition. Possibly. Note _ALL is not correct - at least RWF_HIPRI is explicitly defined a shint that can be ignored. Maybe RWF_SUPPORTED.