drbd: Consistently use block_id == ID_SYNCER for checksum based resync and online verify

DRBD_MAGIC has nothing to do with block ids and the funny values
computed were not actually used, anyway.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index d499aa6b7ac0..5ed96198538b 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -341,6 +341,10 @@ struct drbd_epoch_entry *drbd_alloc_ee(struct drbd_conf *mdev,
         e->size = data_size;
         e->flags = 0;
         e->sector = sector;
+        /*
+         * The block_id is opaque to the receiver.  It is not endianness
+         * converted, and sent back to the sender unchanged.
+         */
         e->block_id = id;
 
         return e;