Re: [PATCH] io_uring/rsrc: replace reg buffer bit field with flags

[Pavel Begunkov <asml.silence@gmail.com>]

On 2/9/26 16:44, Caleb Sander Mateos wrote:
> On Mon, Feb 9, 2026 at 6:33 AM Pavel Begunkov <asml.silence@gmail.com> wrote:
...
>> -       if (imu->is_kbuf)
>> +       if (imu->flags & IO_REGBUF_F_KBUF)
>>                  return io_vec_fill_kern_bvec(ddir, iter, imu, iov, nr_iovs, vec);
>>
>>          return io_vec_fill_bvec(ddir, iter, imu, iov, nr_iovs, vec);
>> diff --git a/io_uring/rsrc.h b/io_uring/rsrc.h
>> index 4a5db2ad1af2..cff0f8834c35 100644
>> --- a/io_uring/rsrc.h
>> +++ b/io_uring/rsrc.h
>> @@ -28,6 +28,10 @@ enum {
>>          IO_IMU_SOURCE   = 1 << ITER_SOURCE,
>>   };
>>
>> +enum {
>> +       IO_REGBUF_F_KBUF                = 1,
> 
> 1 << 0 if this is intended to be extended with more flag bits in the future?

It's not worth of respinning, will get converted if ever
becomes a problem.

-- 
Pavel Begunkov