From: Jens Axboe axboe@kernel.dk
commit 11eb695feb636fa5211067189cad25ac073e7fe5 upstream.
This isn't strictly needed in terms of correctness, but it does allow polling to know if the bio has been put already by a different task and hence avoid polling something that we don't need to.
Cc: stable@vger.kernel.org Fixes: be4d234d7aeb ("bio: add allocation cache abstraction") Reviewed-by: Keith Busch kbusch@kernel.org Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- block/bio.c | 1 + 1 file changed, 1 insertion(+)
--- a/block/bio.c +++ b/block/bio.c @@ -773,6 +773,7 @@ static inline void bio_put_percpu_cache(
if ((bio->bi_opf & REQ_POLLED) && !WARN_ON_ONCE(in_interrupt())) { bio->bi_next = cache->free_list; + bio->bi_bdev = NULL; cache->free_list = bio; cache->nr++; } else {