From: Jens Axboe <axboe@xxxxxxxxx>
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@xxxxxxxxxxxxxxx
Fixes: be4d234d7aeb ("bio: add allocation cache abstraction")
Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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 {
