The patch that converted raid5 to use bio_reset() forgot to initialize
bi_vcnt.
Signed-off-by: NKent Overstreet <koverstreet@google.com>
Cc: NeilBrown <neilb@suse.de>
Cc: linux-raid@vger.kernel.org
Tested-by: NIlia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: NJens Axboe <axboe@kernel.dk>