drbd: Replaced some casts by an union. Improved comments

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 5f80b22e711d..0b03e3174f76 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -2097,7 +2097,7 @@ static int receive_DataRequest(struct drbd_conf *mdev, struct p_header *h)
                 if (drbd_recv(mdev, di->digest, digest_size) != digest_size)
                         goto out_free_e;
 
-                e->block_id = (u64)(unsigned long)di;
+                e->digest = di;
                 if (h->command == P_CSUM_RS_REQUEST) {
                         D_ASSERT(mdev->agreed_pro_version >= 89);
                         e->w.cb = w_e_end_csum_rs_req;
@@ -3769,6 +3769,7 @@ static void drbd_disconnect(struct drbd_conf *mdev)
         drbd_thread_stop(&mdev->asender);
         drbd_free_sock(mdev);
 
+        /* wait for current activity to cease. */
         spin_lock_irq(&mdev->req_lock);
         _drbd_wait_ee_list_empty(mdev, &mdev->active_ee);
         _drbd_wait_ee_list_empty(mdev, &mdev->sync_ee);