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drbd: Renamed the net_conf_update mutex to conf_update

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Preparing to use the same mutex for disk_conf updates

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 2011-05-03 13:14:15 +02:00
parent 934e6138b5
commit a0095508ca
5 changed files with 17 additions and 17 deletions
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2
drivers/block/drbd/drbd_int.h
View File

@ -832,7 +832,7 @@ struct drbd_tconn { /* is a resource from the config file */
unsigned long flags;
struct net_conf *net_conf; /* content protected by rcu */
struct mutex net_conf_update; /* mutex for ready-copy-update of net_conf */
struct mutex conf_update; /* mutex for ready-copy-update of net_conf and disk_conf */
wait_queue_head_t ping_wait; /* Woken upon reception of a ping, and a state change */
struct res_opts res_opts;

2
drivers/block/drbd/drbd_main.c
View File

@ -2474,7 +2474,7 @@ struct drbd_tconn *conn_create(const char *name)
tconn->cstate = C_STANDALONE;
mutex_init(&tconn->cstate_mutex);
spin_lock_init(&tconn->req_lock);
mutex_init(&tconn->net_conf_update);
mutex_init(&tconn->conf_update);
init_waitqueue_head(&tconn->ping_wait);
idr_init(&tconn->volumes);

16
drivers/block/drbd/drbd_nl.c
View File

@ -597,11 +597,11 @@ drbd_set_role(struct drbd_conf *mdev, enum drbd_role new_role, int force)
put_ldev(mdev);
}
} else {
mutex_lock(&mdev->tconn->net_conf_update);
mutex_lock(&mdev->tconn->conf_update);
nc = mdev->tconn->net_conf;
if (nc)
nc->want_lose = 0; /* without copy; single bit op is atomic */
mutex_unlock(&mdev->tconn->net_conf_update);
mutex_unlock(&mdev->tconn->conf_update);
set_disk_ro(mdev->vdisk, false);
if (get_ldev(mdev)) {
@ -1829,7 +1829,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
conn_reconfig_start(tconn);
mutex_lock(&tconn->data.mutex);
mutex_lock(&tconn->net_conf_update);
mutex_lock(&tconn->conf_update);
old_conf = tconn->net_conf;
if (!old_conf) {
@ -1903,7 +1903,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
crypto_free_hash(tconn->cram_hmac_tfm);
tconn->cram_hmac_tfm = crypto.cram_hmac_tfm;
mutex_unlock(&tconn->net_conf_update);
mutex_unlock(&tconn->conf_update);
mutex_unlock(&tconn->data.mutex);
synchronize_rcu();
kfree(old_conf);
@ -1914,7 +1914,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
goto done;
fail:
mutex_unlock(&tconn->net_conf_update);
mutex_unlock(&tconn->conf_update);
mutex_unlock(&tconn->data.mutex);
free_crypto(&crypto);
kfree(new_conf);
@ -2010,11 +2010,11 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
conn_flush_workqueue(tconn);
mutex_lock(&tconn->net_conf_update);
mutex_lock(&tconn->conf_update);
old_conf = tconn->net_conf;
if (old_conf) {
retcode = ERR_NET_CONFIGURED;
mutex_unlock(&tconn->net_conf_update);
mutex_unlock(&tconn->conf_update);
goto fail;
}
rcu_assign_pointer(tconn->net_conf, new_conf);
@ -2027,7 +2027,7 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
tconn->csums_tfm = crypto.csums_tfm;
tconn->verify_tfm = crypto.verify_tfm;
mutex_unlock(&tconn->net_conf_update);
mutex_unlock(&tconn->conf_update);
rcu_read_lock();
idr_for_each_entry(&tconn->volumes, mdev, i) {

10
drivers/block/drbd/drbd_receiver.c
View File

@ -3221,7 +3221,7 @@ static int receive_SyncParam(struct drbd_tconn *tconn, struct packet_info *pi)
p->csums_alg[SHARED_SECRET_MAX-1] = 0;
}
mutex_lock(&mdev->tconn->net_conf_update);
mutex_lock(&mdev->tconn->conf_update);
old_conf = mdev->tconn->net_conf;
if (strcmp(old_conf->verify_alg, p->verify_alg)) {
@ -3296,7 +3296,7 @@ static int receive_SyncParam(struct drbd_tconn *tconn, struct packet_info *pi)
}
rcu_assign_pointer(tconn->net_conf, new_conf);
}
mutex_unlock(&mdev->tconn->net_conf_update);
mutex_unlock(&mdev->tconn->conf_update);
if (new_conf) {
synchronize_rcu();
kfree(old_conf);
@ -3314,7 +3314,7 @@ static int receive_SyncParam(struct drbd_tconn *tconn, struct packet_info *pi)
return 0;
disconnect:
mutex_unlock(&mdev->tconn->net_conf_update);
mutex_unlock(&mdev->tconn->conf_update);
/* just for completeness: actually not needed,
* as this is not reached if csums_tfm was ok. */
crypto_free_hash(csums_tfm);
@ -3744,9 +3744,9 @@ static int receive_state(struct drbd_tconn *tconn, struct packet_info *pi)
}
}
mutex_lock(&mdev->tconn->net_conf_update);
mutex_lock(&mdev->tconn->conf_update);
mdev->tconn->net_conf->want_lose = 0; /* without copy; single bit op is atomic */
mutex_unlock(&mdev->tconn->net_conf_update);
mutex_unlock(&mdev->tconn->conf_update);
drbd_md_sync(mdev); /* update connected indicator, la_size, ... */

4
drivers/block/drbd/drbd_state.c
View File

@ -1410,11 +1410,11 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
if (oc == C_DISCONNECTING && ns_max.conn == C_STANDALONE) {
struct net_conf *old_conf;
mutex_lock(&tconn->net_conf_update);
mutex_lock(&tconn->conf_update);
old_conf = tconn->net_conf;
rcu_assign_pointer(tconn->net_conf, NULL);
conn_free_crypto(tconn);
mutex_unlock(&tconn->net_conf_update);
mutex_unlock(&tconn->conf_update);
synchronize_rcu();
kfree(old_conf);