linux-kernel - Re: [PATCH v5 02/12] dm: Use bioset's front_pad for dm_rq_clone_bio

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Date:	Tue, 14 Aug 2012 14:33:20 +0900
From:	"Jun'ichi Nomura" <j-nomura@...jp.nec.com>
To:	Kent Overstreet <koverstreet@...gle.com>
CC:	linux-bcache@...r.kernel.org, linux-kernel@...r.kernel.org,
	dm-devel@...hat.com, tj@...nel.org, axboe@...nel.dk,
	agk@...hat.com, neilb@...e.de, drbd-dev@...ts.linbit.com,
	vgoyal@...hat.com, mpatocka@...hat.com, sage@...dream.net,
	yehuda@...newdream.net
Subject: Re: [PATCH v5 02/12] dm: Use bioset's front_pad for dm_rq_clone_bio_info

On 08/07/12 07:08, Kent Overstreet wrote:
>  struct dm_rq_clone_bio_info {
>  	struct bio *orig;
>  	struct dm_rq_target_io *tio;
> +	struct bio clone;
>  };
...
> -	pools->bs = bioset_create(pool_size, 0);
> +	pools->bs = bioset_create(pool_size,
> +				  offsetof(struct dm_rq_clone_bio_info, orig));
>  	if (!pools->bs)
>  		goto free_tio_pool_and_out;

Shouldn't this be offsetof(struct dm_rq_clone_bio_info, clone)?

-- 
Jun'ichi Nomura, NEC Corporation
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