Re: [patch] direct-io: propagate -ENOSPC errors

[Christoph Hellwig]

On Mon, Mar 14, 2016 at 05:10:00PM -0400, Jeff Moyer wrote:
> dio_bio_complete turns all errors into -EIO.  This is historical,
> since you used to only get 1 bit precision for errors (BIO_UPTODATE).
> Now that we get actual error codes, we can return the appropriate
> code to userspace.  File systems seem to only propagate either EIO
> or ENOSPC, so I've followed suit in this patch.

Do we?  Just propagating some errors defintively seems odd.  Even
if we do we should have a central helper doing that mapping instead
of opencoding it in various places.