Re: [PATCH 09/12] ext4: drop s_umount over opening the log device

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On Wed, Aug 02, 2023 at 05:41:28PM +0200, Christoph Hellwig wrote:
> Just like get_tree_bdev needs to drop s_umount when opening the main
> device, we need to do the same for the ext4 log device 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@xxxxxx>

Acked-by: Theodore Ts'o <tytso@xxxxxxx>



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