Re: [dm-devel] [PATCH for-4.2 01/14] block: remove management of bi_remaining when restoring original bi_end_io

[Christoph Hellwig]

In general this looks good.  But as Jan mentioned you need to
clear BIO_CHAIN when bi_remaining reaches zero, and I'd really
prefer if bio_inc_remaining wuld not be left exported and folded
into bio_chain so that we prevent new abuses from showing up
and keep the code centralized.
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