return number;
}
-static int make_resync_request(struct drbd_device *device, int cancel)
+static int make_resync_request(struct drbd_device *const device, int cancel)
{
+ struct drbd_peer_device *const peer_device = first_peer_device(device);
+ struct drbd_connection *const connection = peer_device ? peer_device->connection : NULL;
unsigned long bit;
sector_t sector;
const sector_t capacity = drbd_get_capacity(device->this_bdev);
for (i = 0; i < number; i++) {
/* Stop generating RS requests, when half of the send buffer is filled */
- mutex_lock(&first_peer_device(device)->connection->data.mutex);
- if (first_peer_device(device)->connection->data.socket) {
- queued = first_peer_device(device)->connection->data.socket->sk->sk_wmem_queued;
- sndbuf = first_peer_device(device)->connection->data.socket->sk->sk_sndbuf;
+ mutex_lock(&connection->data.mutex);
+ if (connection->data.socket) {
+ queued = connection->data.socket->sk->sk_wmem_queued;
+ sndbuf = connection->data.socket->sk->sk_sndbuf;
} else {
queued = 1;
sndbuf = 0;
}
- mutex_unlock(&first_peer_device(device)->connection->data.mutex);
+ mutex_unlock(&connection->data.mutex);
if (queued > sndbuf / 2)
goto requeue;
/* adjust very last sectors, in case we are oddly sized */
if (sector + (size>>9) > capacity)
size = (capacity-sector)<<9;
- if (first_peer_device(device)->connection->agreed_pro_version >= 89 &&
- first_peer_device(device)->connection->csums_tfm) {
- switch (read_for_csum(first_peer_device(device), sector, size)) {
+ if (connection->agreed_pro_version >= 89 &&
+ connection->csums_tfm) {
+ switch (read_for_csum(peer_device, sector, size)) {
case -EIO: /* Disk failure */
put_ldev(device);
return -EIO;
int err;
inc_rs_pending(device);
- err = drbd_send_drequest(first_peer_device(device), P_RS_DATA_REQUEST,
+ err = drbd_send_drequest(peer_device, P_RS_DATA_REQUEST,
sector, size, ID_SYNCER);
if (err) {
drbd_err(device, "drbd_send_drequest() failed, aborting...\n");
{
struct drbd_request *req = container_of(w, struct drbd_request, w);
struct drbd_device *device = req->device;
- struct drbd_connection *connection = first_peer_device(device)->connection;
+ struct drbd_peer_device *const peer_device = first_peer_device(device);
+ struct drbd_connection *const connection = peer_device->connection;
int err;
if (unlikely(cancel)) {
* No more barriers will be sent, until we leave AHEAD mode again. */
maybe_send_barrier(connection, req->epoch);
- err = drbd_send_out_of_sync(first_peer_device(device), req);
+ err = drbd_send_out_of_sync(peer_device, req);
req_mod(req, OOS_HANDED_TO_NETWORK);
return err;
{
struct drbd_request *req = container_of(w, struct drbd_request, w);
struct drbd_device *device = req->device;
- struct drbd_connection *connection = first_peer_device(device)->connection;
+ struct drbd_peer_device *const peer_device = first_peer_device(device);
+ struct drbd_connection *connection = peer_device->connection;
int err;
if (unlikely(cancel)) {
maybe_send_barrier(connection, req->epoch);
connection->send.current_epoch_writes++;
- err = drbd_send_dblock(first_peer_device(device), req);
+ err = drbd_send_dblock(peer_device, req);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK);
return err;
{
struct drbd_request *req = container_of(w, struct drbd_request, w);
struct drbd_device *device = req->device;
- struct drbd_connection *connection = first_peer_device(device)->connection;
+ struct drbd_peer_device *const peer_device = first_peer_device(device);
+ struct drbd_connection *connection = peer_device->connection;
int err;
if (unlikely(cancel)) {
* if there was any yet. */
maybe_send_barrier(connection, req->epoch);
- err = drbd_send_drequest(first_peer_device(device), P_DATA_REQUEST, req->i.sector, req->i.size,
+ err = drbd_send_drequest(peer_device, P_DATA_REQUEST, req->i.sector, req->i.size,
(unsigned long)req);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK);
*/
void drbd_start_resync(struct drbd_device *device, enum drbd_conns side)
{
+ struct drbd_peer_device *peer_device = first_peer_device(device);
+ struct drbd_connection *connection = peer_device ? peer_device->connection : NULL;
union drbd_state ns;
int r;
if (r > 0) {
drbd_info(device, "before-resync-target handler returned %d, "
"dropping connection.\n", r);
- conn_request_state(first_peer_device(device)->connection, NS(conn, C_DISCONNECTING), CS_HARD);
+ conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_HARD);
return;
}
} else /* C_SYNC_SOURCE */ {
} else {
drbd_info(device, "before-resync-source handler returned %d, "
"dropping connection.\n", r);
- conn_request_state(first_peer_device(device)->connection,
+ conn_request_state(connection,
NS(conn, C_DISCONNECTING), CS_HARD);
return;
}
}
}
- if (current == first_peer_device(device)->connection->worker.task) {
+ if (current == connection->worker.task) {
/* The worker should not sleep waiting for state_mutex,
that can take long */
if (!mutex_trylock(device->state_mutex)) {
* drbd_resync_finished from here in that case.
* We drbd_gen_and_send_sync_uuid here for protocol < 96,
* and from after_state_ch otherwise. */
- if (side == C_SYNC_SOURCE &&
- first_peer_device(device)->connection->agreed_pro_version < 96)
- drbd_gen_and_send_sync_uuid(first_peer_device(device));
+ if (side == C_SYNC_SOURCE && connection->agreed_pro_version < 96)
+ drbd_gen_and_send_sync_uuid(peer_device);
- if (first_peer_device(device)->connection->agreed_pro_version < 95 &&
- device->rs_total == 0) {
+ if (connection->agreed_pro_version < 95 && device->rs_total == 0) {
/* This still has a race (about when exactly the peers
* detect connection loss) that can lead to a full sync
* on next handshake. In 8.3.9 we fixed this with explicit
int timeo;
rcu_read_lock();
- nc = rcu_dereference(first_peer_device(device)->connection->net_conf);
+ nc = rcu_dereference(connection->net_conf);
timeo = nc->ping_int * HZ + nc->ping_timeo * HZ / 9;
rcu_read_unlock();
schedule_timeout_interruptible(timeo);
projects / deliverable / linux.git / blobdiff