Re: [v12 1/2] fs: New zonefs file system

From: Markus Elfring
Date: Fri Feb 07 2020 - 02:18:39 EST


> > Hmmm. I'm wondering if it would be better to return -EOPNOTSUPP here
> > so that the application knows it can't do non-blocking write AIO to
> > this file.
>
> I wondered the same too. In the end, I decided to go with silently ignoring
> the flag (for now) since raw block device accesses do the same (the NOWAIT
> support is not complete and IOs may wait on free tags). I have an idea for
> fixing simply the out-of-order issuing that may result from using nowait.

I find this aspect interesting for further clarification.


> I will send a patch for that later and can then remove this.

Should another software improvement be integrated into the initial proposal?

Regards,
Markus