[dm-devel] [PATCH v3 11/26] block: Add submit_bio_wait(), remove from md

[Kent Overstreet]

On Tue, Oct 02, 2012 at 03:41:32PM -0400, Vivek Goyal wrote:
> On Mon, Sep 24, 2012 at 03:34:51PM -0700, Kent Overstreet wrote:
> > Random cleanup - this code was duplicated and it's not really specific
> > to md.
> > 
> > Also added the ability to return the actual error code.
> 
> Who is going to make use of actual error code and why checking
> BIO_UPTODATE is not sufficient (as existing code is doing)?

Some things do, though it's not common and I forget where I saw it -
checking for -ENOTSUPPORTED vs. other stuff