[dm-devel] [PATCH] dm-ebs: Fix incorrect checking for REQ_OP_FLUSH.

[Heinz Mauelshagen]

Acked-by: Heinz Mauelshagen <heinzm at redhat.com>

On 8/1/20 12:46 AM, John Dorminy wrote:
> REQ_OP_FLUSH was being treated as a flag, but the operation
> part of bio->bi_opf must be treated as a whole. Change to
> accessing the operation part via bio_op(bio) and checking
> for equality.
>
> Signed-off-by: John Dorminy <jdorminy at redhat.com>
> ---
>   drivers/md/dm-ebs-target.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/md/dm-ebs-target.c b/drivers/md/dm-ebs-target.c
> index 44451276f128..cb85610527c2 100644
> --- a/drivers/md/dm-ebs-target.c
> +++ b/drivers/md/dm-ebs-target.c
> @@ -363,7 +363,7 @@ static int ebs_map(struct dm_target *ti, struct bio *bio)
>   	bio_set_dev(bio, ec->dev->bdev);
>   	bio->bi_iter.bi_sector = ec->start + dm_target_offset(ti, bio->bi_iter.bi_sector);
>   
> -	if (unlikely(bio->bi_opf & REQ_OP_FLUSH))
> +	if (unlikely(bio_op(bio) == REQ_OP_FLUSH))
>   		return DM_MAPIO_REMAPPED;
>   	/*
>   	 * Only queue for bufio processing in case of partial