drbd: always use_bmbv, ignore setting
Now that the peer may handle multi-bio EEs,
we can ignore the peer's limit,
and concentrate on the limits of the local IO stack.
This is safe accross drbd protocol versions,
as our queue_max_sectors() will be adjusted accordingly.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 388a3e8..a04ec01 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3011,7 +3011,11 @@
ldsc = 1;
}
- max_seg_s = be32_to_cpu(p->max_segment_size);
+ if (mdev->agreed_pro_version < 94)
+ max_seg_s = be32_to_cpu(p->max_segment_size);
+ else /* drbd 8.3.8 onwards */
+ max_seg_s = DRBD_MAX_SEGMENT_SIZE;
+
if (max_seg_s != queue_max_segment_size(mdev->rq_queue))
drbd_setup_queue_param(mdev, max_seg_s);