We get all sorts of unreliable and funky results since the bio is designed to align on a cacheline, which it does not when inlined like this. Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> --- block/fops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/fops.c b/block/fops.c index 1d4f862950bb..7eebd590342b 100644 --- a/block/fops.c +++ b/block/fops.c @@ -137,7 +137,7 @@ struct blkdev_dio { size_t size; atomic_t ref; unsigned int flags; - struct bio bio; + struct bio bio ____cacheline_aligned_in_smp; }; static struct bio_set blkdev_dio_pool; -- 2.33.1