drbd: don't pretend that barrier_nr == 0 was special
authorLars Ellenberg <lars.ellenberg@linbit.com>
Fri, 23 Mar 2012 12:57:13 +0000 (13:57 +0100)
committerPhilipp Reisner <philipp.reisner@linbit.com>
Wed, 9 May 2012 13:16:46 +0000 (15:16 +0200)
We used to have a barrier implementation where barrier_nr 0 was
reserved. That is long gone. Just use the full sequence space.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
drivers/block/drbd/drbd_main.c

index 02fd1e109cf63226e9c52a2f589493648f60d82a..519f286a429936930a1a28f30fefe6e70dd3eb92 100644 (file)
@@ -247,9 +247,7 @@ void _tl_add_barrier(struct drbd_conf *mdev, struct drbd_tl_epoch *new)
        new->n_writes = 0;
 
        newest_before = mdev->newest_tle;
-       /* never send a barrier number == 0, because that is special-cased
-        * when using TCQ for our write ordering code */
-       new->br_number = (newest_before->br_number+1) ?: 1;
+       new->br_number = newest_before->br_number+1;
        if (mdev->newest_tle != new) {
                mdev->newest_tle->next = new;
                mdev->newest_tle = new;