Re: [RFC PATCH 18/34] iomap: use bio_new in iomap_dio_bio_actor

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On Wed, Jan 27, 2021 at 11:11:17PM -0800, Chaitanya Kulkarni wrote:
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
> ---
>  fs/iomap/direct-io.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
> index f6c557a1bd25..0737192f7e5c 100644
> --- a/fs/iomap/direct-io.c
> +++ b/fs/iomap/direct-io.c
> @@ -267,9 +267,8 @@ iomap_dio_bio_actor(struct inode *inode, loff_t pos, loff_t length,
>  			goto out;
>  		}
>  
> -		bio = bio_alloc(GFP_KERNEL, nr_pages);
> -		bio_set_dev(bio, iomap->bdev);
> -		bio->bi_iter.bi_sector = iomap_sector(iomap, pos);
> +		bio = bio_new(iomap->bdev, iomap_sector(iomap, pos), 0, 0,
> +			      nr_pages, GFP_KERNEL);

op == 0?  It seems a little odd to me that we'd set the field to zero
and then construct bi_opf later.

It also strikes me as a little strange that bi_opf is combined from the
third and fourth parameters, but maybe some day you'll want to do some
parameter verification on debug kernels or something...?

--D

>  		bio->bi_write_hint = dio->iocb->ki_hint;
>  		bio->bi_ioprio = dio->iocb->ki_ioprio;
>  		bio->bi_private = dio;
> -- 
> 2.22.1
> 

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