Re: [RFC 06/12] bio: don't check target->bi_status on error

[Christoph Hellwig]

On Mon, Dec 08, 2025 at 12:10:13PM +0000, Andreas Gruenbacher wrote:
> In a few places, target->bi_status is set to source->bi_status only if
> source->bi_status is not 0 and target->bi_status is (still) 0.  Here,
> checking the value of target->bi_status before setting it is an
> unnecessary micro optimization because we are already on an error path.

What is source and target here?  I have a hard time trying to follow
what this is trying to do.