From: Matthew Wilcox <willy@infradead.org>
To: Jan Kara <jack@suse.cz>
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@infradead.org>,
Alasdair Kergon <agk@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Anna Schumaker <anna@kernel.org>, Chao Yu <chao@kernel.org>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
"Darrick J. Wong" <djwong@kernel.org>,
Dave Kleikamp <shaggy@kernel.org>,
David Sterba <dsterba@suse.com>,
dm-devel@redhat.com, drbd-dev@lists.linbit.com,
Gao Xiang <xiang@kernel.org>, Jack Wang <jinpu.wang@ionos.com>,
Jaegeuk Kim <jaegeuk@kernel.org>,
jfs-discussion@lists.sourceforge.net,
Joern Engel <joern@lazybastard.org>,
Joseph Qi <joseph.qi@linux.alibaba.com>,
Kent Overstreet <kent.overstreet@gmail.com>,
linux-bcache@vger.kernel.org
Subject: Re: [PATCH 01/32] block: Provide blkdev_get_handle_* functions
Date: Tue, 4 Jul 2023 13:43:51 +0100 [thread overview]
Message-ID: <ZKQUB4rU8Gebhq6R@casper.infradead.org> (raw)
In-Reply-To: <20230704122224.16257-1-jack@suse.cz>
On Tue, Jul 04, 2023 at 02:21:28PM +0200, Jan Kara wrote:
> +struct bdev_handle *blkdev_get_handle_by_dev(dev_t dev, blk_mode_t mode,
> + void *holder, const struct blk_holder_ops *hops)
> +{
> + struct bdev_handle *handle = kmalloc(sizeof(struct bdev_handle),
> + GFP_KERNEL);
> + struct block_device *bdev;
> +
> + if (!handle)
> + return ERR_PTR(-ENOMEM);
> + bdev = blkdev_get_by_dev(dev, mode, holder, hops);
> + if (IS_ERR(bdev))
> + return ERR_CAST(bdev);
Would we be better off with a handle->error (and a NULL return from this
function means "we couldn't allocate a handle")? I have no objection
to what you've done here, just wondering if it might end up nicer for
the users.
next prev parent reply other threads:[~2023-07-04 12:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-04 12:21 [PATCH RFC 0/32] block: Make blkdev_get_by_*() return handle Jan Kara
2023-07-04 12:21 ` [PATCH 01/32] block: Provide blkdev_get_handle_* functions Jan Kara
2023-07-04 12:43 ` Matthew Wilcox [this message]
[not found] ` <ZKQUB4rU8Gebhq6R-FZi0V3Vbi30CUdFEqe4BF2D2FQJk+8+b@public.gmane.org>
2023-07-04 13:03 ` Jan Kara
2023-07-04 14:06 ` Bart Van Assche
2023-07-04 16:14 ` Matthew Wilcox
2023-07-05 15:19 ` Bart Van Assche
[not found] ` <bb91e76b-0bd8-a949-f8b9-868f919ebcb9-HInyCGIudOg@public.gmane.org>
2023-07-05 16:12 ` Jan Kara
2023-07-04 16:28 ` Keith Busch
2023-07-05 10:21 ` Jan Kara
2023-07-06 15:38 ` Christoph Hellwig
[not found] ` <ZKbgAG5OoHVyUKOG-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2023-07-06 16:14 ` Jan Kara
2023-07-07 11:28 ` Christoph Hellwig
2023-07-07 12:24 ` Jan Kara
2023-07-12 13:39 ` Haris Iqbal
2023-07-12 16:06 ` Haris Iqbal
[not found] ` <CAJpMwyiUcw+mH0sZa8f8UJsaSZ7NSE65s2gZDEia+pASyP_gJQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2023-07-31 10:50 ` Jan Kara
2023-07-31 11:13 ` Christoph Hellwig
[not found] ` <20230629165206.383-1-jack-AlSwsSmVLrQ@public.gmane.org>
2023-07-04 12:21 ` [PATCH 27/32] nilfs2: Convert to use blkdev_get_handle_by_path() Jan Kara
[not found] ` <20230704122224.16257-27-jack-AlSwsSmVLrQ@public.gmane.org>
2023-07-21 5:22 ` Ryusuke Konishi
2023-07-04 12:21 ` [PATCH 32/32] block: Rename blkdev_get_handle_by_*() and blkdev_handle_put() Jan Kara
2023-07-06 14:54 ` [PATCH RFC 0/32] block: Make blkdev_get_by_*() return handle Christoph Hellwig
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