linux-kernel - Re: [PATCH 20/27] dm: dm-bufio.c: use bio_set_vec

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Date:	Tue, 5 Apr 2016 06:04:02 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Jens Axboe <axboe@...com>, linux-kernel@...r.kernel.org,
	linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>,
	Boaz Harrosh <boaz@...xistor.com>,
	Alasdair Kergon <agk@...hat.com>,
	Mike Snitzer <snitzer@...hat.com>,
	"maintainer:DEVICE-MAPPER (LVM)" <dm-devel@...hat.com>,
	Shaohua Li <shli@...nel.org>,
	"open list:SOFTWARE RAID (Multiple Disks) SUPPORT" 
	<linux-raid@...r.kernel.org>
Subject: Re: [PATCH 20/27] dm: dm-bufio.c: use bio_set_vec_table()

On Tue, Apr 05, 2016 at 08:07:35PM +0800, Ming Lei wrote:
> Signed-off-by: Ming Lei <tom.leiming@...il.com>
> ---
>  drivers/md/dm-bufio.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
> index cd77216..0e48ad7 100644
> --- a/drivers/md/dm-bufio.c
> +++ b/drivers/md/dm-bufio.c
> @@ -624,8 +624,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw, sector_t block,
>  	int len;
>  
>  	bio_init(&b->bio);
> -	b->bio.bi_io_vec = b->bio_vec;
> -	b->bio.bi_max_vecs = DM_BUFIO_INLINE_VECS;
> +	bio_set_vec_table(&b->bio, b->bio_vec, DM_BUFIO_INLINE_VECS);
>  	b->bio.bi_iter.bi_sector = block << b->c->sectors_per_block_bits;
>  	b->bio.bi_bdev = b->c->bdev;
>  	b->bio.bi_end_io = inline_endio;

Should be switched to use bio_alloc instead.