drop vmerge accounting

Remove hw_segments field from struct bio and struct request. Without virtual
merge accounting they have no purpose.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/block/elevator.c b/block/elevator.c
index 4f5127054e3f..269615e6dbf5 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -790,7 +790,6 @@ struct request *elv_next_request(struct request_queue *q)
                          * device can handle
                          */
                         rq->nr_phys_segments++;
-                        rq->nr_hw_segments++;
                 }
 
                 if (!q->prep_rq_fn)
@@ -813,7 +812,6 @@ struct request *elv_next_request(struct request_queue *q)
                                  * so that we don't add it again
                                  */
                                 --rq->nr_phys_segments;
-                                --rq->nr_hw_segments;
                         }
 
                         rq = NULL;