Re: chained bio fixes and improvements

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On Sat, Mar 12, 2016 at 12:34 AM, Christoph Hellwig <hch@xxxxxx> wrote:
> Hi Jens,
>
> Brian Foster pointed out that chained bios might be clobbering an error
> set in bi_error when a later chained bio completes successfully.  This
> sounds unusual, but the way my new XFS writeback code uses bio chaining
> it would actually be the mormal case, as we chain earlier to later bios
> to make the code work.
>
> While looking at the code I also found a couple additional improvements
> that seemed worthwhile.

Looks a good fix/improvement.

Reviewed-by: Ming Lei <tom.leiming@xxxxxxxxx>


Thanks,
Ming Lei
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