drbd: Implemented conn_lowest_conn()
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_nl.c b/drivers/block/drbd/drbd_nl.c
index ed08dce..5cf1164 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -1590,7 +1590,7 @@
static int adm_detach(struct drbd_conf *mdev)
{
- enum drbd_ret_code retcode;
+ enum drbd_state_rv retcode;
drbd_suspend_io(mdev); /* so no-one is stuck in drbd_al_begin_io */
retcode = drbd_request_state(mdev, NS(disk, D_DISKLESS));
wait_event(mdev->misc_wait,
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index 0ce6653..36703fe 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -133,6 +133,18 @@
return ds;
}
+enum drbd_conns conn_lowest_conn(struct drbd_tconn *tconn)
+{
+ enum drbd_conns conn = C_MASK;
+ struct drbd_conf *mdev;
+ int vnr;
+
+ idr_for_each_entry(&tconn->volumes, mdev, vnr)
+ conn = min_t(enum drbd_conns, conn, mdev->state.conn);
+
+ return conn;
+}
+
/**
* cl_wide_st_chg() - true if the state change is a cluster wide one
* @mdev: DRBD device.
diff --git a/drivers/block/drbd/drbd_state.h b/drivers/block/drbd/drbd_state.h
index 0f8441d..286af06 100644
--- a/drivers/block/drbd/drbd_state.h
+++ b/drivers/block/drbd/drbd_state.h
@@ -154,5 +154,6 @@
enum drbd_role conn_highest_peer(struct drbd_tconn *tconn);
enum drbd_disk_state conn_highest_disk(struct drbd_tconn *tconn);
enum drbd_disk_state conn_highest_pdsk(struct drbd_tconn *tconn);
+enum drbd_conns conn_lowest_conn(struct drbd_tconn *tconn);
#endif
