linux-ext4 - Re: [PATCH 01/32] block: Provide blkdev_get_handle

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Message-ID: <CAJpMwyiUcw+mH0sZa8f8UJsaSZ7NSE65s2gZDEia+pASyP_gJQ@mail.gmail.com>
Date:   Wed, 12 Jul 2023 18:06:35 +0200
From:   Haris Iqbal <haris.iqbal@...os.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Jan Kara <jack@...e.cz>, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Alasdair Kergon <agk@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anna Schumaker <anna@...nel.org>, Chao Yu <chao@...nel.org>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Dave Kleikamp <shaggy@...nel.org>,
        David Sterba <dsterba@...e.com>, dm-devel@...hat.com,
        drbd-dev@...ts.linbit.com, Gao Xiang <xiang@...nel.org>,
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Subject: Re: [PATCH 01/32] block: Provide blkdev_get_handle_* functions

On Thu, Jul 6, 2023 at 5:38 PM Christoph Hellwig <hch@...radead.org> wrote:
>
> On Tue, Jul 04, 2023 at 02:21:28PM +0200, Jan Kara wrote:
> > Create struct bdev_handle that contains all parameters that need to be
> > passed to blkdev_put() and provide blkdev_get_handle_* functions that
> > return this structure instead of plain bdev pointer. This will
> > eventually allow us to pass one more argument to blkdev_put() without
> > too much hassle.
>
> Can we use the opportunity to come up with better names?  blkdev_get_*
> was always a rather horrible naming convention for something that
> ends up calling into ->open.
>
> What about:
>
> struct bdev_handle *bdev_open_by_dev(dev_t dev, blk_mode_t mode, void *holder,
>                 const struct blk_holder_ops *hops);
> struct bdev_handle *bdev_open_by_path(dev_t dev, blk_mode_t mode,
>                 void *holder, const struct blk_holder_ops *hops);
> void bdev_release(struct bdev_handle *handle);

+1 to this.
Also, if we are removing "handle" from the function, should the name
of the structure it returns also change? Would something like bdev_ctx
be better?

(Apologies for the previous non-plaintext email)

>
> ?