raid5-cache: fully initialize flush_bio when needed

Stop using bio_reset and just initialize the bio fully when needed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <song@kernel.org>
This commit is contained in:
Christoph Hellwig 2022-02-28 13:25:01 +02:00 • committed by Song Liu
commit 0dd00cba99