linux-kernel - Re: [PATCH 01/15] nfblock: use gendisk private

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Date:   Sat, 9 May 2020 12:38:00 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Jens Axboe <axboe@...nel.dk>, Jim Paris <jim@...n.com>,
        Geoff Levand <geoff@...radead.org>,
        Joshua Morris <josh.h.morris@...ibm.com>,
        Philip Kelleher <pjk1939@...ux.ibm.com>,
        Minchan Kim <minchan@...nel.org>,
        Nitin Gupta <ngupta@...are.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:TENSILICA XTENSA PORT (xtensa)" 
        <linux-xtensa@...ux-xtensa.org>,
        Lars Ellenberg <drbd-dev@...ts.linbit.com>,
        linux-block@...r.kernel.org,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-bcache@...r.kernel.org, linux-raid@...r.kernel.org,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>
Subject: Re: [PATCH 01/15] nfblock: use gendisk private_data

Hi Christoph,

On Fri, May 8, 2020 at 6:16 PM Christoph Hellwig <hch@....de> wrote:
> Signed-off-by: Christoph Hellwig <hch@....de>

Thanks for your patch!

> --- a/arch/m68k/emu/nfblock.c
> +++ b/arch/m68k/emu/nfblock.c
> @@ -61,7 +61,7 @@ struct nfhd_device {
>
>  static blk_qc_t nfhd_make_request(struct request_queue *queue, struct bio *bio)
>  {
> -       struct nfhd_device *dev = queue->queuedata;
> +       struct nfhd_device *dev = bio->bi_disk->private_data;
>         struct bio_vec bvec;
>         struct bvec_iter iter;
>         int dir, len, shift;
> @@ -122,7 +122,6 @@ static int __init nfhd_init_one(int id, u32 blocks, u32 bsize)
>         if (dev->queue == NULL)
>                 goto free_dev;
>
> -       dev->queue->queuedata = dev;
>         blk_queue_logical_block_size(dev->queue, bsize);
>
>         dev->disk = alloc_disk(16);
> @@ -136,6 +135,7 @@ static int __init nfhd_init_one(int id, u32 blocks, u32 bsize)
>         sprintf(dev->disk->disk_name, "nfhd%u", dev_id);
>         set_capacity(dev->disk, (sector_t)blocks * (bsize / 512));
>         dev->disk->queue = dev->queue;
> +       dev->disk->private_data = dev;

This is already set above, just before the quoted sprintf() call.

>
>         add_disk(dev->disk);

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds