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drbd: Implemented conn_lowest_conn() 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner 2011-03-29 14:21:03 +02:00
parent 8c7e16c39f
commit 19f83c7661
3 changed files with 14 additions and 1 deletions
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2
drivers/block/drbd/drbd_nl.c
View File

@ -1590,7 +1590,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
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,

12
drivers/block/drbd/drbd_state.c
View File

@ -133,6 +133,18 @@ enum drbd_disk_state conn_highest_pdsk(struct drbd_tconn *tconn)
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.

1
drivers/block/drbd/drbd_state.h
View File

@ -154,5 +154,6 @@ enum drbd_role conn_highest_role(struct drbd_tconn *tconn);
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