linux-kernel - Re: [dm-devel] [PATCH v3 11/26] block: Add submit_bio

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Date:	Tue, 2 Oct 2012 13:11:05 -0700
From:	Kent Overstreet <koverstreet@...gle.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org,
	dm-devel@...hat.com, tj@...nel.org, axboe@...nel.dk
Subject: Re: [dm-devel] [PATCH v3 11/26] block: Add submit_bio_wait(), remove
 from md

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
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