blk: Fix bio_io_vec index when checking bvec gaps
Corrects a coding error from earlier patch.
Reported by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Fixes: 03100aada96f ("block: Replace SG_GAPS with new queue limits mask")
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 0e0d9fd..b262527 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -488,7 +488,7 @@
struct bio *prev = req->biotail;
return bvec_gap_to_prev(req->q, &prev->bi_io_vec[prev->bi_vcnt - 1],
- next->bi_io_vec[1].bv_offset);
+ next->bi_io_vec[0].bv_offset);
}
static int ll_merge_requests_fn(struct request_queue *q, struct request *req,