Re: [PATCH V6 17/17] block: ublk_drv: apply io_uring FUSED_CMD for supporting zero copy

[Ming Lei]

On Fri, Mar 31, 2023 at 07:55:30PM +0000, Bernd Schubert wrote:
> On 3/30/23 13:36, Ming Lei wrote:

...

> > +static inline bool ublk_check_fused_buf_dir(const struct request *req,
> > +		unsigned int flags)
> > +{
> > +	flags &= IO_URING_F_FUSED_BUF;
> 
> ~IO_URING_F_FUSED_BUF ?

IO_URING_F_FUSED_BUF is buffer direction mask, and we can get direction
flags only in above way, so the above is correct.


Thanks, 
Ming