[dm-devel] [RFC] add a bi_error field

[Liu Bo]

On Wed, Jun 03, 2015 at 03:42:38PM +0200, Christoph Hellwig wrote:
> Bio error reporting has been a mess for a while, and the increasing
> use of chained bios makes it worse.
> 
> This series attempts to add a proper error field to struct bio
> to sort this out.  It's working fine for me, but MD and btrfs were
> doing pretty nasty things with the BIO_UPTODATE flag, so I would
> appreciate some detailed review there.

Somehow the patch is missing from my mailbox, but this cover letter
remains, I have to review it from online archive.

Anyway, I went through btrfs part and it looks good.

Reviewed-by: Liu Bo <bo.li.liu at oracle.com> (btrfs part)

Thanks,

-liubo