xfs: drop s_umount over opening the log and RT devices

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Just like get_tree_bdev needs to drop s_umount when opening the main
device, we need to do the same for the xfs log and RT devices to avoid a
potential lock order reversal with s_unmount for the mark_dead path.

It might be preferable to just drop s_umount over ->fill_super entirely,
but that will require a fairly massive audit first, so we'll do the easy
version here first.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Message-Id: <20230802154131.2221419-12-hch@lst.de>
Signed-off-by: Christian Brauner <brauner@kernel.org>

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Christoph Hellwig 2023-08-02 17:41:30 +02:00 • committed by Christian Brauner

parent 8bed178375

commit 8d945b595e

1 changed files with 14 additions and 4 deletions

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fs/xfs/xfs_super.c

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