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, 1 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index 1261516dd42a..2616cdd049a8 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2026,7 +2026,6 @@ void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
 
         if (bio_has_data(bio)) {
                 rq->nr_phys_segments = bio_phys_segments(q, bio);
-                rq->nr_hw_segments = bio_hw_segments(q, bio);
                 rq->buffer = bio_data(bio);
         }
         rq->current_nr_sectors = bio_cur_sectors(bio);