drbd: Removed the OBJECT_DYING and the CONFIG_PENDING bits
superseded by refcounting
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_int.h b/drivers/block/drbd/drbd_int.h
index 7797879..28e7ecc 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -816,12 +816,6 @@
GOT_PING_ACK, /* set when we receive a ping_ack packet, ping_wait gets woken */
CONN_WD_ST_CHG_OKAY,
CONN_WD_ST_CHG_FAIL,
- CONFIG_PENDING, /* serialization of (re)configuration requests.
- * if set, also prevents the device from dying */
- OBJECT_DYING, /* device became unconfigured,
- * but worker thread is still handling the cleanup.
- * reconfiguring (nl_disk_conf, nl_net_conf) is dissalowed,
- * while this is set. */
CONN_DRY_RUN, /* Expect disconnect after resync handshake. */
};
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 272c4a0..caaef71 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1040,34 +1040,20 @@
drbd_setup_queue_param(mdev, new);
}
-/* serialize deconfig (worker exiting, doing cleanup)
- * and reconfig (drbdsetup disk, drbdsetup net)
- *
- * Wait for a potentially exiting worker, then restart it,
- * or start a new one. Flush any pending work, there may still be an
- * after_state_change queued.
- */
+/* Starts the worker thread */
static void conn_reconfig_start(struct drbd_tconn *tconn)
{
- wait_event(tconn->ping_wait, !test_and_set_bit(CONFIG_PENDING, &tconn->flags));
- wait_event(tconn->ping_wait, !test_bit(OBJECT_DYING, &tconn->flags));
drbd_thread_start(&tconn->worker);
conn_flush_workqueue(tconn);
}
-/* if still unconfigured, stops worker again.
- * if configured now, clears CONFIG_PENDING.
- * wakes potential waiters */
+/* if still unconfigured, stops worker again. */
static void conn_reconfig_done(struct drbd_tconn *tconn)
{
spin_lock_irq(&tconn->req_lock);
- if (conn_all_vols_unconf(tconn)) {
- set_bit(OBJECT_DYING, &tconn->flags);
+ if (conn_all_vols_unconf(tconn))
drbd_thread_stop_nowait(&tconn->worker);
- } else
- clear_bit(CONFIG_PENDING, &tconn->flags);
spin_unlock_irq(&tconn->req_lock);
- wake_up(&tconn->ping_wait);
}
/* Make sure IO is suspended before calling this function(). */
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index d7a330e..05628b4 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -926,18 +926,6 @@
mdev->tconn->susp_nod = ns.susp_nod;
mdev->tconn->susp_fen = ns.susp_fen;
- /* solve the race between becoming unconfigured,
- * worker doing the cleanup, and
- * admin reconfiguring us:
- * on (re)configure, first set CONFIG_PENDING,
- * then wait for a potentially exiting worker,
- * start the worker, and schedule one no_op.
- * then proceed with configuration.
- */
- if(conn_all_vols_unconf(mdev->tconn) &&
- !test_and_set_bit(CONFIG_PENDING, &mdev->tconn->flags))
- set_bit(OBJECT_DYING, &mdev->tconn->flags);
-
if (os.disk == D_ATTACHING && ns.disk >= D_NEGOTIATING)
drbd_print_uuids(mdev, "attached to UUIDs");
@@ -1401,10 +1389,8 @@
static void after_all_state_ch(struct drbd_tconn *tconn)
{
- if (conn_all_vols_unconf(tconn) &&
- test_bit(OBJECT_DYING, &tconn->flags)) {
+ if (conn_all_vols_unconf(tconn))
drbd_thread_stop_nowait(&tconn->worker);
- }
}
static int w_after_conn_state_ch(struct drbd_work *w, int unused)
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 9d1ba8e..7a73bd4 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -1754,9 +1754,6 @@
drbd_mdev_cleanup(mdev);
}
up_read(&drbd_cfg_rwsem);
- clear_bit(OBJECT_DYING, &tconn->flags);
- clear_bit(CONFIG_PENDING, &tconn->flags);
- wake_up(&tconn->ping_wait);
return 0;
}
