linux-kernel - Re: [RFC PATCH 5/6] bsg: reduce unnecessary arguments for bsg_map

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Date:   Thu, 10 Aug 2017 11:35:31 +0200
From:   Christoph Hellwig <hch@....de>
To:     Benjamin Block <bblock@...ux.vnet.ibm.com>
Cc:     "James E . J . Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        Johannes Thumshirn <jthumshirn@...e.de>,
        Christoph Hellwig <hch@....de>,
        Steffen Maier <maier@...ux.vnet.ibm.com>,
        open-iscsi@...glegroups.com
Subject: Re: [RFC PATCH 5/6] bsg: reduce unnecessary arguments for
        bsg_map_hdr()

On Wed, Aug 09, 2017 at 04:11:19PM +0200, Benjamin Block wrote:
> Since struct bsg_command is now used in every calling case, we don't
> need separation of arguments anymore that are contained in the same
> bsg_command.
> 
> Signed-off-by: Benjamin Block <bblock@...ux.vnet.ibm.com>
> ---
>  block/bsg.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/block/bsg.c b/block/bsg.c
> index 8517361a9b3f..6ee2ffca808a 100644
> --- a/block/bsg.c
> +++ b/block/bsg.c
> @@ -212,11 +212,12 @@ bsg_validate_sgv4_hdr(struct sg_io_v4 *hdr, int *op)
>   * map sg_io_v4 to a request.
>   */
>  static struct request *
> -bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
> -	    u8 *reply_buffer)
> +bsg_map_hdr(struct bsg_device *bd, struct bsg_command *bc,
> +	    fmode_t has_write_perm)

I wish we could just rename the argument to mode and pass on the
whole file->f_mode while you are cleaning up this code.  That should
be a separate patch, though.

Reviewed-by: Christoph Hellwig <hch@....de>