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From:   Christoph Hellwig <hch@lst.de>
To:     "Darrick J. Wong" <djwong@kernel.org>
Cc:     Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
        Al Viro <viro@zeniv.linux.org.uk>,
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Subject: Re: [PATCH 6/9] block: add a mark_dead holder operation
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On Fri, May 05, 2023 at 11:37:49AM -0700, Darrick J. Wong wrote:
> Now that we have blockdev callbacks, can we add a pair for freeze_bdev
> and thaw_bdev so that LVM snapshotting an xfs log device can actually
> quiesce the filesystem?

Probably.  Assuming we're not creating any really weird locking dependency
that way.