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/linux/drivers/md/
H A Draid5-cache.cdiff fc833c2a2f4129c42efdaed64b9eb6e9ae5fdcee Mon Nov 28 09:19:19 CET 2016 JackieLiu <liuyun01@kylinos.cn> md/raid5-cache: use ring add to prevent overflow

'write_pos' must be protected with 'r5l_ring_add', or it may overflow

Signed-off-by: JackieLiu <liuyun01@kylinos.cn>
Reviewed-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>