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Guoqing Jiang authored
The caller of raid1_read_request could pass NULL or a valid pointer for "struct r1bio *r1_bio", so it actually means whether r1_bio is existed or not. Signed-off-by: Guoqing Jiang <jiangguoqing@kylinos.cn> Signed-off-by: Song Liu <song@kernel.org>
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