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drbd: Turn connection->volumes into connection->peer_devices 

Let connection->peer_devices point to peer devices; connection->volumes was
pointing to devices.

Signed-off-by: Andreas Gruenbacher <agruen@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
This commit is contained in:
Andreas Gruenbacher 2011-06-21 17:23:59 +02:00 committed by Philipp Reisner
parent eb6bea673f
commit c06ece6ba6
6 changed files with 136 additions and 92 deletions
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7
drivers/block/drbd/drbd_int.h
View File

@ -549,7 +549,7 @@ struct drbd_connection {
struct list_head connections;
struct drbd_resource *resource;
struct kref kref;
struct idr volumes; /* <connection, vnr> to device mapping */
struct idr peer_devices; /* volume number to peer device mapping */
enum drbd_conns cstate; /* Only C_STANDALONE to C_WF_REPORT_PARAMS */
unsigned susp:1; /* IO suspended by user */
unsigned susp_nod:1; /* IO suspended because no data */
@ -822,7 +822,10 @@ static inline unsigned int device_to_minor(struct drbd_device *device)
static inline struct drbd_device *vnr_to_device(struct drbd_connection *connection, int vnr)
{
return (struct drbd_device *)idr_find(&connection->volumes, vnr);
struct drbd_peer_device *peer_device;
peer_device = idr_find(&connection->peer_devices, vnr);
return peer_device ? peer_device->device : NULL;
}
/*

27
drivers/block/drbd/drbd_main.c
View File

@ -496,15 +496,16 @@ char *drbd_task_to_thread_name(struct drbd_connection *connection, struct task_s
int conn_lowest_minor(struct drbd_connection *connection)
{
struct drbd_device *device;
int vnr = 0, m;
struct drbd_peer_device *peer_device;
int vnr = 0, minor = -1;
rcu_read_lock();
device = idr_get_next(&connection->volumes, &vnr);
m = device ? device_to_minor(device) : -1;
peer_device = idr_get_next(&connection->peer_devices, &vnr);
if (peer_device)
minor = device_to_minor(peer_device->device);
rcu_read_unlock();
return m;
return minor;
}
#ifdef CONFIG_SMP
@ -2590,7 +2591,7 @@ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts)
spin_lock_init(&connection->req_lock);
mutex_init(&connection->conf_update);
init_waitqueue_head(&connection->ping_wait);
idr_init(&connection->volumes);
idr_init(&connection->peer_devices);
drbd_init_workqueue(&connection->sender_work);
mutex_init(&connection->data.mutex);
@ -2632,7 +2633,7 @@ void drbd_destroy_connection(struct kref *kref)
conn_err(connection, "epoch_size:%d\n", atomic_read(&connection->current_epoch->epoch_size));
kfree(connection->current_epoch);
idr_destroy(&connection->volumes);
idr_destroy(&connection->peer_devices);
free_cpumask_var(connection->cpu_mask);
drbd_free_socket(&connection->meta);
@ -2760,7 +2761,7 @@ enum drbd_ret_code drbd_create_minor(struct drbd_connection *connection, unsigne
}
kref_get(&device->kref);
id = idr_alloc(&connection->volumes, device, vnr, vnr + 1, GFP_KERNEL);
id = idr_alloc(&connection->peer_devices, peer_device, vnr, vnr + 1, GFP_KERNEL);
if (id < 0) {
if (id == -ENOSPC) {
err = ERR_INVALID_REQUEST;
@ -2786,7 +2787,7 @@ enum drbd_ret_code drbd_create_minor(struct drbd_connection *connection, unsigne
return NO_ERROR;
out_idr_remove_vol:
idr_remove(&connection->volumes, vnr);
idr_remove(&connection->peer_devices, vnr);
out_idr_remove_from_resource:
idr_remove(&resource->devices, vnr);
out_idr_remove_minor:
@ -2815,7 +2816,7 @@ void drbd_delete_minor(struct drbd_device *device)
int refs = 3;
for_each_connection(connection, resource) {
idr_remove(&connection->volumes, device->vnr);
idr_remove(&connection->peer_devices, device->vnr);
refs++;
}
idr_remove(&resource->devices, device->vnr);
@ -2938,11 +2939,13 @@ void drbd_free_sock(struct drbd_connection *connection)
void conn_md_sync(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
kref_get(&device->kref);
rcu_read_unlock();
drbd_md_sync(device);

59
drivers/block/drbd/drbd_nl.c
View File

@ -415,14 +415,16 @@ static int conn_khelper(struct drbd_connection *connection, char *cmd)
static enum drbd_fencing_p highest_fencing_policy(struct drbd_connection *connection)
{
enum drbd_fencing_p fp = FP_NOT_AVAIL;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (get_ldev_if_state(device, D_CONSISTENT)) {
fp = max_t(enum drbd_fencing_p, fp,
rcu_dereference(device->ldev->disk_conf)->fencing);
struct disk_conf *disk_conf =
rcu_dereference(peer_device->device->ldev->disk_conf);
fp = max_t(enum drbd_fencing_p, fp, disk_conf->fencing);
put_ldev(device);
}
}
@ -1878,12 +1880,13 @@ int drbd_adm_detach(struct sk_buff *skb, struct genl_info *info)
static bool conn_resync_running(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
bool rv = false;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (device->state.conn == C_SYNC_SOURCE ||
device->state.conn == C_SYNC_TARGET ||
device->state.conn == C_PAUSED_SYNC_S ||
@ -1899,12 +1902,13 @@ static bool conn_resync_running(struct drbd_connection *connection)
static bool conn_ov_running(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
bool rv = false;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (device->state.conn == C_VERIFY_S ||
device->state.conn == C_VERIFY_T) {
rv = true;
@ -1919,7 +1923,7 @@ static bool conn_ov_running(struct drbd_connection *connection)
static enum drbd_ret_code
_check_net_options(struct drbd_connection *connection, struct net_conf *old_conf, struct net_conf *new_conf)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int i;
if (old_conf && connection->cstate == C_WF_REPORT_PARAMS && connection->agreed_pro_version < 100) {
@ -1942,7 +1946,8 @@ _check_net_options(struct drbd_connection *connection, struct net_conf *old_conf
(new_conf->wire_protocol != DRBD_PROT_C))
return ERR_NOT_PROTO_C;
idr_for_each_entry(&connection->volumes, device, i) {
idr_for_each_entry(&connection->peer_devices, peer_device, i) {
struct drbd_device *device = peer_device->device;
if (get_ldev(device)) {
enum drbd_fencing_p fp = rcu_dereference(device->ldev->disk_conf)->fencing;
put_ldev(device);
@ -1963,7 +1968,7 @@ static enum drbd_ret_code
check_net_options(struct drbd_connection *connection, struct net_conf *new_conf)
{
static enum drbd_ret_code rv;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int i;
rcu_read_lock();
@ -1971,7 +1976,8 @@ check_net_options(struct drbd_connection *connection, struct net_conf *new_conf)
rcu_read_unlock();
/* connection->volumes protected by genl_lock() here */
idr_for_each_entry(&connection->volumes, device, i) {
idr_for_each_entry(&connection->peer_devices, peer_device, i) {
struct drbd_device *device = peer_device->device;
if (!device->bitmap) {
if (drbd_bm_init(device))
return ERR_NOMEM;
@ -2155,7 +2161,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
struct net_conf *old_conf, *new_conf = NULL;
struct crypto crypto = { };
struct drbd_resource *resource;
@ -2256,7 +2262,8 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
mutex_unlock(&connection->conf_update);
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, i) {
idr_for_each_entry(&connection->peer_devices, peer_device, i) {
struct drbd_device *device = peer_device->device;
device->send_cnt = 0;
device->recv_cnt = 0;
}
@ -2915,6 +2922,7 @@ int drbd_adm_get_status(struct sk_buff *skb, struct genl_info *info)
static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb)
{
struct drbd_peer_device *peer_device;
struct drbd_device *device;
struct drbd_genlmsghdr *dh;
struct drbd_resource *pos = (struct drbd_resource *)cb->args[0];
@ -2926,7 +2934,7 @@ static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb)
/* Open coded, deferred, iteration:
* for_each_resource_safe(resource, tmp, &drbd_resources) {
* connection = "first connection of resource";
* idr_for_each_entry(&connection->volumes, device, i) {
* idr_for_each_entry(&connection->peer_devices, peer_device, i) {
* ...
* }
* }
@ -2962,8 +2970,8 @@ static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb)
if (resource) {
next_resource:
connection = first_connection(resource);
device = idr_get_next(&connection->volumes, &volume);
if (!device) {
peer_device = idr_get_next(&connection->peer_devices, &volume);
if (!peer_device) {
/* No more volumes to dump on this resource.
* Advance resource iterator. */
pos = list_entry_rcu(resource->resources.next,
@ -2987,7 +2995,7 @@ static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb)
if (!dh)
goto out;
if (!device) {
if (!peer_device) {
/* This is a connection without a single volume.
* Suprisingly enough, it may have a network
* configuration. */
@ -3002,6 +3010,7 @@ static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb)
goto done;
}
device = peer_device->device;
D_ASSERT(device->vnr == volume);
D_ASSERT(first_peer_device(device)->connection == connection);
@ -3359,7 +3368,7 @@ int drbd_adm_del_minor(struct sk_buff *skb, struct genl_info *info)
int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
{
int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */
struct drbd_device *device;
struct drbd_peer_device *peer_device;
unsigned i;
retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE);
@ -3369,8 +3378,8 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
goto out;
/* demote */
idr_for_each_entry(&adm_ctx.connection->volumes, device, i) {
retcode = drbd_set_role(device, R_SECONDARY, 0);
idr_for_each_entry(&adm_ctx.connection->peer_devices, peer_device, i) {
retcode = drbd_set_role(peer_device->device, R_SECONDARY, 0);
if (retcode < SS_SUCCESS) {
drbd_msg_put_info("failed to demote");
goto out;
@ -3384,8 +3393,8 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
}
/* detach */
idr_for_each_entry(&adm_ctx.connection->volumes, device, i) {
retcode = adm_detach(device, 0);
idr_for_each_entry(&adm_ctx.connection->peer_devices, peer_device, i) {
retcode = adm_detach(peer_device->device, 0);
if (retcode < SS_SUCCESS || retcode > NO_ERROR) {
drbd_msg_put_info("failed to detach");
goto out;
@ -3400,8 +3409,8 @@ int drbd_adm_down(struct sk_buff *skb, struct genl_info *info)
/* Now, nothing can fail anymore */
/* delete volumes */
idr_for_each_entry(&adm_ctx.connection->volumes, device, i) {
retcode = adm_del_minor(device);
idr_for_each_entry(&adm_ctx.connection->peer_devices, peer_device, i) {
retcode = adm_del_minor(peer_device->device);
if (retcode != NO_ERROR) {
/* "can not happen" */
drbd_msg_put_info("failed to delete volume");

44
drivers/block/drbd/drbd_receiver.c
View File

@ -867,7 +867,7 @@ int drbd_connected(struct drbd_device *device)
static int conn_connect(struct drbd_connection *connection)
{
struct drbd_socket sock, msock;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
struct net_conf *nc;
int vnr, timeout, h, ok;
bool discard_my_data;
@ -1038,7 +1038,8 @@ static int conn_connect(struct drbd_connection *connection)
set_bit(STATE_SENT, &connection->flags);
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
kref_get(&device->kref);
rcu_read_unlock();
@ -1145,12 +1146,14 @@ static int drbd_recv_header(struct drbd_connection *connection, struct packet_in
static void drbd_flush(struct drbd_connection *connection)
{
int rv;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
if (connection->write_ordering >= WO_bdev_flush) {
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (!get_ldev(device))
continue;
kref_get(&device->kref);
@ -1260,7 +1263,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_connection *connectio
void drbd_bump_write_ordering(struct drbd_connection *connection, enum write_ordering_e wo)
{
struct disk_conf *dc;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
enum write_ordering_e pwo;
int vnr;
static char *write_ordering_str[] = {
@ -1272,7 +1275,9 @@ void drbd_bump_write_ordering(struct drbd_connection *connection, enum write_ord
pwo = connection->write_ordering;
wo = min(pwo, wo);
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (!get_ldev_if_state(device, D_ATTACHING))
continue;
dc = rcu_dereference(device->ldev->disk_conf);
@ -1401,11 +1406,13 @@ static void drbd_remove_epoch_entry_interval(struct drbd_device *device,
static void conn_wait_active_ee_empty(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
kref_get(&device->kref);
rcu_read_unlock();
drbd_wait_ee_list_empty(device, &device->active_ee);
@ -4436,7 +4443,7 @@ void conn_flush_workqueue(struct drbd_connection *connection)
static void conn_disconnect(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
enum drbd_conns oc;
int vnr;
@ -4455,11 +4462,12 @@ static void conn_disconnect(struct drbd_connection *connection)
drbd_free_sock(connection);
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
kref_get(&device->kref);
rcu_read_unlock();
drbd_disconnected(device);
kref_put(&device->kref, &drbd_destroy_device);
kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();
@ -5111,13 +5119,15 @@ static int got_NegRSDReply(struct drbd_connection *connection, struct packet_inf
static int got_BarrierAck(struct drbd_connection *connection, struct packet_info *pi)
{
struct p_barrier_ack *p = pi->data;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
tl_release(connection, p->barrier, be32_to_cpu(p->set_size));
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (device->state.conn == C_AHEAD &&
atomic_read(&device->ap_in_flight) == 0 &&
!test_and_set_bit(AHEAD_TO_SYNC_SOURCE, &device->flags)) {
@ -5187,7 +5197,7 @@ static int got_skip(struct drbd_connection *connection, struct packet_info *pi)
static int connection_finish_peer_reqs(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr, not_empty = 0;
do {
@ -5195,7 +5205,8 @@ static int connection_finish_peer_reqs(struct drbd_connection *connection)
flush_signals(current);
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
kref_get(&device->kref);
rcu_read_unlock();
if (drbd_finish_peer_reqs(device)) {
@ -5208,7 +5219,8 @@ static int connection_finish_peer_reqs(struct drbd_connection *connection)
set_bit(SIGNAL_ASENDER, &connection->flags);
spin_lock_irq(&connection->req_lock);
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
not_empty = !list_empty(&device->done_ee);
if (not_empty)
break;

86
drivers/block/drbd/drbd_state.c
View File

@ -63,12 +63,13 @@ static inline bool is_susp(union drbd_state s)
bool conn_all_vols_unconf(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
bool rv = true;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (device->state.disk != D_DISKLESS ||
device->state.conn != C_STANDALONE ||
device->state.role != R_SECONDARY) {
@ -103,12 +104,14 @@ static enum drbd_role min_role(enum drbd_role role1, enum drbd_role role2)
enum drbd_role conn_highest_role(struct drbd_connection *connection)
{
enum drbd_role role = R_UNKNOWN;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
role = max_role(role, device->state.role);
}
rcu_read_unlock();
return role;
@ -117,12 +120,14 @@ enum drbd_role conn_highest_role(struct drbd_connection *connection)
enum drbd_role conn_highest_peer(struct drbd_connection *connection)
{
enum drbd_role peer = R_UNKNOWN;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
peer = max_role(peer, device->state.peer);
}
rcu_read_unlock();
return peer;
@ -131,12 +136,14 @@ enum drbd_role conn_highest_peer(struct drbd_connection *connection)
enum drbd_disk_state conn_highest_disk(struct drbd_connection *connection)
{
enum drbd_disk_state ds = D_DISKLESS;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
ds = max_t(enum drbd_disk_state, ds, device->state.disk);
}
rcu_read_unlock();
return ds;
@ -145,12 +152,14 @@ enum drbd_disk_state conn_highest_disk(struct drbd_connection *connection)
enum drbd_disk_state conn_lowest_disk(struct drbd_connection *connection)
{
enum drbd_disk_state ds = D_MASK;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
ds = min_t(enum drbd_disk_state, ds, device->state.disk);
}
rcu_read_unlock();
return ds;
@ -159,12 +168,14 @@ enum drbd_disk_state conn_lowest_disk(struct drbd_connection *connection)
enum drbd_disk_state conn_highest_pdsk(struct drbd_connection *connection)
{
enum drbd_disk_state ds = D_DISKLESS;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
ds = max_t(enum drbd_disk_state, ds, device->state.pdsk);
}
rcu_read_unlock();
return ds;
@ -173,12 +184,14 @@ enum drbd_disk_state conn_highest_pdsk(struct drbd_connection *connection)
enum drbd_conns conn_lowest_conn(struct drbd_connection *connection)
{
enum drbd_conns conn = C_MASK;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
conn = min_t(enum drbd_conns, conn, device->state.conn);
}
rcu_read_unlock();
return conn;
@ -186,13 +199,13 @@ enum drbd_conns conn_lowest_conn(struct drbd_connection *connection)
static bool no_peer_wf_report_params(struct drbd_connection *connection)
{
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
bool rv = true;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr)
if (device->state.conn == C_WF_REPORT_PARAMS) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr)
if (peer_device->device->state.conn == C_WF_REPORT_PARAMS) {
rv = false;
break;
}
@ -1256,12 +1269,12 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
spin_lock_irq(&connection->req_lock);
if (connection->susp_fen && conn_lowest_conn(connection) >= C_CONNECTED) {
/* case2: The connection was established again: */
struct drbd_device *odev;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, odev, vnr)
clear_bit(NEW_CUR_UUID, &odev->flags);
idr_for_each_entry(&connection->peer_devices, peer_device, vnr)
clear_bit(NEW_CUR_UUID, &peer_device->device->flags);
rcu_read_unlock();
_tl_restart(connection, RESEND);
_conn_request_state(connection,
@ -1530,7 +1543,7 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
struct drbd_connection *connection = w->connection;
enum drbd_conns oc = acscw->oc;
union drbd_state ns_max = acscw->ns_max;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
kfree(acscw);
@ -1558,7 +1571,8 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
/* case1: The outdate peer handler is successful: */
if (ns_max.pdsk <= D_OUTDATED) {
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
if (test_bit(NEW_CUR_UUID, &device->flags)) {
drbd_uuid_new_current(device);
clear_bit(NEW_CUR_UUID, &device->flags);
@ -1584,7 +1598,7 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
void conn_old_common_state(struct drbd_connection *connection, union drbd_state *pcs, enum chg_state_flags *pf)
{
enum chg_state_flags flags = ~0;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr, first_vol = 1;
union drbd_dev_state os, cs = {
{ .role = R_SECONDARY,
@ -1595,7 +1609,8 @@ void conn_old_common_state(struct drbd_connection *connection, union drbd_state
} };
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
os = device->state;
if (first_vol) {
@ -1632,11 +1647,12 @@ conn_is_valid_transition(struct drbd_connection *connection, union drbd_state ma
{
enum drbd_state_rv rv = SS_SUCCESS;
union drbd_state ns, os;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
int vnr;
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
os = drbd_read_state(device);
ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL);
@ -1647,10 +1663,8 @@ conn_is_valid_transition(struct drbd_connection *connection, union drbd_state ma
continue;
rv = is_valid_transition(os, ns);
if (rv < SS_SUCCESS)
break;
if (!(flags & CS_HARD)) {
if (rv >= SS_SUCCESS && !(flags & CS_HARD)) {
rv = is_valid_state(device, ns);
if (rv < SS_SUCCESS) {
if (is_valid_state(device, os) == rv)
@ -1658,14 +1672,15 @@ conn_is_valid_transition(struct drbd_connection *connection, union drbd_state ma
} else
rv = is_valid_soft_transition(os, ns, connection);
}
if (rv < SS_SUCCESS)
if (rv < SS_SUCCESS) {
if (flags & CS_VERBOSE)
print_st_err(device, os, ns, rv);
break;
}
}
rcu_read_unlock();
if (rv < SS_SUCCESS && flags & CS_VERBOSE)
print_st_err(device, os, ns, rv);
return rv;
}
@ -1681,7 +1696,7 @@ conn_set_state(struct drbd_connection *connection, union drbd_state mask, union
.disk = D_MASK,
.pdsk = D_MASK
} };
struct drbd_device *device;
struct drbd_peer_device *peer_device;
enum drbd_state_rv rv;
int vnr, number_of_volumes = 0;
@ -1696,7 +1711,8 @@ conn_set_state(struct drbd_connection *connection, union drbd_state mask, union
}
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
number_of_volumes++;
os = drbd_read_state(device);
ns = apply_mask_val(os, mask, val);

5
drivers/block/drbd/drbd_worker.c
View File

@ -1890,7 +1890,7 @@ int drbd_worker(struct drbd_thread *thi)
{
struct drbd_connection *connection = thi->connection;
struct drbd_work *w = NULL;
struct drbd_device *device;
struct drbd_peer_device *peer_device;
LIST_HEAD(work_list);
int vnr;
@ -1934,7 +1934,8 @@ int drbd_worker(struct drbd_thread *thi)
} while (!list_empty(&work_list));
rcu_read_lock();
idr_for_each_entry(&connection->volumes, device, vnr) {
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device;
D_ASSERT(device->state.disk == D_DISKLESS && device->state.conn == C_STANDALONE);
kref_get(&device->kref);
rcu_read_unlock();