md/raid5-cache: Annotate pslot with __rcu notation
radix_tree_lookup_slot() and radix_tree_replace_slot() API expect the slot returned and looked up to be marked with __rcu. Otherwise sparse warnings are generated: drivers/md/raid5-cache.c:2939:23: warning: incorrect type in assignment (different address spaces) drivers/md/raid5-cache.c:2939:23: expected void **pslot drivers/md/raid5-cache.c:2939:23: got void [noderef] __rcu ** Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Song Liu <song@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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