xfs: simplify device handling

We removed all codepaths where s_umount is taken beneath open_mutex and
bd_holder_lock so don't make things more complicated than they need to
be and hold s_umount over block device opening.

Link: https://lore.kernel.org/r/20231024-vfs-super-rework-v1-2-37a8aa697148@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Christian Brauner 2023-10-24 16:53:40 +02:00
commit 653bee386c
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