From: Christoph Hellwig <hch@lst.de>
To: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-s390@vger.kernel.org
Subject: Re: [PATCH 4/5] block: fix bdev_disk_changed for non-partitioned devices
Date: Thu, 14 Nov 2019 15:31:28 +0100 [thread overview]
Message-ID: <20191114143128.GA1591@lst.de> (raw)
In-Reply-To: <20191114140716.GI28486@quack2.suse.cz>
On Thu, Nov 14, 2019 at 03:07:16PM +0100, Jan Kara wrote:
> I'd just note that e.g. drivers/scsi/sr.c or drivers/scsi/sd.c already call
> revalidate_disk() on device open so it seems a bit stupid to call it again
> just a bit later. But that's not really a new thing, this patch just makes
> it universal.
That whole area is a bit of a mess, including how the whole
->revalidate_disk callback works, and how we have a complicated events
mechanism, but then also md as the only remaining user of the legacy
->media_changed method. I have a few idea on how to sort some of that
out, but it's going to take a while.
next prev parent reply other threads:[~2019-11-14 14:31 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-06 15:14 disk revalidation cleanups and fixlets Christoph Hellwig
2019-11-06 15:14 ` [PATCH 1/5] block: refactor rescan_partitions Christoph Hellwig
2019-11-07 9:39 ` Hannes Reinecke
2019-11-14 13:13 ` Jan Kara
2019-11-06 15:14 ` [PATCH 2/5] block: merge invalidate_partitions into rescan_partitions Christoph Hellwig
2019-11-06 17:24 ` Keith Busch
2019-11-07 9:47 ` Hannes Reinecke
2019-11-07 9:55 ` Christoph Hellwig
2019-11-14 13:25 ` Jan Kara
2019-11-06 15:14 ` [PATCH 3/5] block: move rescan_partitions to fs/block_dev.c Christoph Hellwig
2019-11-07 9:48 ` Hannes Reinecke
2019-11-14 13:28 ` Jan Kara
2019-11-06 15:14 ` [PATCH 4/5] block: fix bdev_disk_changed for non-partitioned devices Christoph Hellwig
2019-11-14 14:07 ` Jan Kara
2019-11-14 14:31 ` Christoph Hellwig [this message]
2019-11-06 15:14 ` [PATCH 5/5] block: remove (__)blkdev_reread_part as an exported API Christoph Hellwig
2019-11-07 13:27 ` Stefan Haberland
2019-11-14 14:24 ` Jan Kara
2019-11-14 14:08 ` disk revalidation cleanups and fixlets Jens Axboe
2019-11-14 14:32 ` Christoph Hellwig
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