[Drbd-dev] [PATCH 28/45] target: use bio op accessors

[Hannes Reinecke]

On 06/05/2016 09:32 PM, mchristi at redhat.com wrote:
> From: Mike Christie <mchristi at redhat.com>
> 
> Separate the op from the rq_flag_bits and have the target layer
> set/get the bio using bio_set_op_attrs/bio_op.
> 
> Signed-off-by: Mike Christie <mchristi at redhat.com>
> ---
>  drivers/target/target_core_iblock.c | 29 ++++++++++++++---------------
>  drivers/target/target_core_pscsi.c  |  2 +-
>  2 files changed, 15 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
> index c25109c..22af12f 100644
> --- a/drivers/target/target_core_iblock.c
> +++ b/drivers/target/target_core_iblock.c
[ .. ]
> @@ -689,18 +690,15 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
>  		 * Force writethrough using WRITE_FUA if a volatile write cache
>  		 * is not enabled, or if initiator set the Force Unit Access bit.
>  		 */
> +		op = REQ_OP_WRITE;
>  		if (test_bit(QUEUE_FLAG_FUA, &q->queue_flags)) {
>  			if (cmd->se_cmd_flags & SCF_FUA)
> -				rw = WRITE_FUA;
> +				op_flags = WRITE_FUA;
>  			else if (!test_bit(QUEUE_FLAG_WC, &q->queue_flags))
> -				rw = WRITE_FUA;
> -			else
> -				rw = WRITE;
> -		} else {
> -			rw = WRITE;
> +				op_flags = WRITE_FUA;
>  		}
Wrong intendation.

>  	} else {
> -		rw = READ;
> +		op = REQ_OP_READ;
>  	}
>  
>  	ibr = kzalloc(sizeof(struct iblock_req), GFP_KERNEL);
> @@ -714,7 +712,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
>  		return 0;
>  	}
>  
> -	bio = iblock_get_bio(cmd, block_lba, sgl_nents, rw);
> +	bio = iblock_get_bio(cmd, block_lba, sgl_nents, op, op_flags);
>  	if (!bio)
>  		goto fail_free_ibr;
>  
> @@ -738,7 +736,8 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
>  				bio_cnt = 0;
>  			}
>  
> -			bio = iblock_get_bio(cmd, block_lba, sg_num, rw);
> +			bio = iblock_get_bio(cmd, block_lba, sg_num, op,
> +					     op_flags);
>  			if (!bio)
>  				goto fail_put_bios;
>  
> diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
> index de18790..81564c8 100644
> --- a/drivers/target/target_core_pscsi.c
> +++ b/drivers/target/target_core_pscsi.c
> @@ -922,7 +922,7 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
>  					goto fail;
>  
>  				if (rw)
> -					bio->bi_rw |= REQ_WRITE;
> +					bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
>  
>  				pr_debug("PSCSI: Allocated bio: %p,"
>  					" dir: %s nr_vecs: %d\n", bio,
> 
Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare at suse.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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