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commitb4d129640fupstream. Local variable is definied first in the beginning of backlog_store(), there is no need to define it again. Fixes:8c13ab115b("md/bitmap: don't set max_write_behind if there is no write mostly device") Signed-off-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20230706083727.608914-2-yukuai1@huaweicloud.com Signed-off-by: Song Liu <song@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>