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Date:   Wed, 9 Aug 2023 18:14:11 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     "Darrick J. Wong" <djwong@kernel.org>
Cc:     Christoph Hellwig <hch@lst.de>, Al Viro <viro@zeniv.linux.org.uk>,
        Christian Brauner <brauner@kernel.org>,
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Subject: Re: [PATCH 07/13] xfs: close the external block devices in
 xfs_mount_free
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References: <20230808161600.1099516-1-hch@lst.de> <20230808161600.1099516-8-hch@lst.de> <20230809155524.GU11352@frogsfrogsfrogs>
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On Wed, Aug 09, 2023 at 08:55:24AM -0700, Darrick J. Wong wrote:
> If I'm following this correctly, putting the superblock flushes the
> bdevs (though it doesn't invalidate the bdev mapping!) and only later
> when we free the xfs_mount do we actually put the buftargs?
> 
> That works, though I still think we need to invalidate the bdev
> pagecache for the log and data bdevs.

Yes, I'll respin it with that.  And I'll also add a comment to the
invalidate_bdev calls because it's completely non-obvious as-is.