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Use lockdep_assert_held to ensure mtd_table_mutex is held instead of mutex_trylock games. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20210823073359.705281-3-hch@lst.de