[dm-devel] [PATCH 1/1] dm-zoned: Zoned block device target

[Christoph Hellwig]

On Thu, Feb 09, 2017 at 01:18:49PM +0900, Damien Le Moal wrote:
> +
> +/*
> + * Target BIO completion.
> + */
> +static inline void dmz_bio_end(struct bio *bio, int err)
> +{
> +	struct dm_zone_bioctx *bioctx =
> +		dm_per_bio_data(bio, sizeof(struct dm_zone_bioctx));
> +
> +	if (atomic_dec_and_test(&bioctx->ref)) {

It seems like this could be simplified a bit by using bio_chain
to chain the clones to the original bio.