Re: [RFC PATCH 28/34] zonefs: use bio_new

Damien Le Moal
2021-01-28T07:30:07Z

On 2021/01/28 16:15, Chaitanya Kulkarni wrote:
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
> ---
> fs/zonefs/super.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
> index ab68e27bb322..620d67965a22 100644
> --- a/fs/zonefs/super.c
> +++ b/fs/zonefs/super.c
> @@ -661,6 +661,7 @@ static const struct iomap_dio_ops zonefs_write_dio_ops = {
>
> static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
> {
> + unsigned int op = REQ_OP_ZONE_APPEND | REQ_SYNC | REQ_IDLE;

I do not see the point of adding this variable since it is used only for the
bio_new() call. Pass the op value directly.

> struct inode *inode = file_inode(iocb->ki_filp);
> struct zonefs_inode_info *zi = ZONEFS_I(inode);
> struct block_device *bdev = inode->i_sb->s_bdev;
> @@ -678,15 +679,12 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
> if (!nr_pages)
> return 0;
>
> - bio = bio_alloc(GFP_NOFS, nr_pages);
> + bio = bio_new(bdev, zi->i_zsector, op, 0, GFP_NOFS, nr_pages);
> if (!bio)
> return -ENOMEM;
>
> - bio_set_dev(bio, bdev);
> - bio->bi_iter.bi_sector = zi->i_zsector;
> bio->bi_write_hint = iocb->ki_hint;
> bio->bi_ioprio = iocb->ki_ioprio;
> - bio->bi_opf = REQ_OP_ZONE_APPEND | REQ_SYNC | REQ_IDLE;
> if (iocb->ki_flags & IOCB_DSYNC)
> bio->bi_opf |= REQ_FUA;
>
>

--
Damien Le Moal
Western Digital Research