#include "drbd_vli.h"
static DEFINE_MUTEX(drbd_main_mutex);
-int drbd_worker(struct drbd_thread *);
-
-int drbd_init(void);
static int drbd_open(struct block_device *bdev, fmode_t mode);
static void drbd_release(struct gendisk *gd, fmode_t mode);
static int w_md_sync(struct drbd_work *w, int unused);
/* in 2.6.x, our device mapping and config info contains our virtual gendisks
* as member "struct gendisk *vdisk;"
*/
-struct idr minors;
-struct list_head drbd_connections; /* list of struct drbd_connection */
+struct idr drbd_devices;
+struct list_head drbd_resources;
struct kmem_cache *drbd_request_cache;
struct kmem_cache *drbd_ee_cache; /* peer requests */
int expect_epoch = 0;
int expect_size = 0;
- spin_lock_irq(&connection->req_lock);
+ spin_lock_irq(&connection->resource->req_lock);
/* find oldest not yet barrier-acked write request,
* count writes in its epoch. */
/* first some paranoia code */
if (req == NULL) {
- conn_err(connection, "BAD! BarrierAck #%u received, but no epoch in tl!?\n",
+ drbd_err(connection, "BAD! BarrierAck #%u received, but no epoch in tl!?\n",
barrier_nr);
goto bail;
}
if (expect_epoch != barrier_nr) {
- conn_err(connection, "BAD! BarrierAck #%u received, expected #%u!\n",
+ drbd_err(connection, "BAD! BarrierAck #%u received, expected #%u!\n",
barrier_nr, expect_epoch);
goto bail;
}
if (expect_size != set_size) {
- conn_err(connection, "BAD! BarrierAck #%u received with n_writes=%u, expected n_writes=%u!\n",
+ drbd_err(connection, "BAD! BarrierAck #%u received with n_writes=%u, expected n_writes=%u!\n",
barrier_nr, set_size, expect_size);
goto bail;
}
break;
_req_mod(req, BARRIER_ACKED);
}
- spin_unlock_irq(&connection->req_lock);
+ spin_unlock_irq(&connection->resource->req_lock);
return;
bail:
- spin_unlock_irq(&connection->req_lock);
+ spin_unlock_irq(&connection->resource->req_lock);
conn_request_state(connection, NS(conn, C_PROTOCOL_ERROR), CS_HARD);
}
void tl_restart(struct drbd_connection *connection, enum drbd_req_event what)
{
- spin_lock_irq(&connection->req_lock);
+ spin_lock_irq(&connection->resource->req_lock);
_tl_restart(connection, what);
- spin_unlock_irq(&connection->req_lock);
+ spin_unlock_irq(&connection->resource->req_lock);
}
/**
*/
void tl_abort_disk_io(struct drbd_device *device)
{
- struct drbd_connection *connection = device->connection;
+ struct drbd_connection *connection = first_peer_device(device)->connection;
struct drbd_request *req, *r;
- spin_lock_irq(&connection->req_lock);
+ spin_lock_irq(&connection->resource->req_lock);
list_for_each_entry_safe(req, r, &connection->transfer_log, tl_requests) {
if (!(req->rq_state & RQ_LOCAL_PENDING))
continue;
continue;
_req_mod(req, ABORT_DISK_IO);
}
- spin_unlock_irq(&connection->req_lock);
+ spin_unlock_irq(&connection->resource->req_lock);
}
static int drbd_thread_setup(void *arg)
int retval;
snprintf(current->comm, sizeof(current->comm), "drbd_%c_%s",
- thi->name[0], thi->connection->name);
+ thi->name[0],
+ thi->connection->resource->name);
restart:
retval = thi->function(thi);
*/
if (thi->t_state == RESTARTING) {
- conn_info(connection, "Restarting %s thread\n", thi->name);
+ drbd_info(connection, "Restarting %s thread\n", thi->name);
thi->t_state = RUNNING;
spin_unlock_irqrestore(&thi->t_lock, flags);
goto restart;
complete_all(&thi->stop);
spin_unlock_irqrestore(&thi->t_lock, flags);
- conn_info(connection, "Terminating %s\n", current->comm);
+ drbd_info(connection, "Terminating %s\n", current->comm);
/* Release mod reference taken when thread was started */
- kref_put(&connection->kref, &conn_destroy);
+ kref_put(&connection->kref, drbd_destroy_connection);
module_put(THIS_MODULE);
return retval;
}
switch (thi->t_state) {
case NONE:
- conn_info(connection, "Starting %s thread (from %s [%d])\n",
+ drbd_info(connection, "Starting %s thread (from %s [%d])\n",
thi->name, current->comm, current->pid);
/* Get ref on module for thread - this is released when thread exits */
if (!try_module_get(THIS_MODULE)) {
- conn_err(connection, "Failed to get module reference in drbd_thread_start\n");
+ drbd_err(connection, "Failed to get module reference in drbd_thread_start\n");
spin_unlock_irqrestore(&thi->t_lock, flags);
return false;
}
flush_signals(current); /* otherw. may get -ERESTARTNOINTR */
nt = kthread_create(drbd_thread_setup, (void *) thi,
- "drbd_%c_%s", thi->name[0], thi->connection->name);
+ "drbd_%c_%s", thi->name[0], thi->connection->resource->name);
if (IS_ERR(nt)) {
- conn_err(connection, "Couldn't start thread\n");
+ drbd_err(connection, "Couldn't start thread\n");
- kref_put(&connection->kref, &conn_destroy);
+ kref_put(&connection->kref, drbd_destroy_connection);
module_put(THIS_MODULE);
return false;
}
break;
case EXITING:
thi->t_state = RESTARTING;
- conn_info(connection, "Restarting %s thread (from %s [%d])\n",
+ drbd_info(connection, "Restarting %s thread (from %s [%d])\n",
thi->name, current->comm, current->pid);
/* fall through */
case RUNNING:
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
/**
* drbd_calc_cpu_mask() - Generate CPU masks, spread over all CPUs
- * @device: DRBD device.
*
- * Forces all threads of a device onto the same CPU. This is beneficial for
+ * Forces all threads of a resource onto the same CPU. This is beneficial for
* DRBD's performance. May be overwritten by user's configuration.
*/
-void drbd_calc_cpu_mask(struct drbd_connection *connection)
+static void drbd_calc_cpu_mask(cpumask_var_t *cpu_mask)
{
- int ord, cpu;
+ unsigned int *resources_per_cpu, min_index = ~0;
- /* user override. */
- if (cpumask_weight(connection->cpu_mask))
- return;
+ resources_per_cpu = kzalloc(nr_cpu_ids * sizeof(*resources_per_cpu), GFP_KERNEL);
+ if (resources_per_cpu) {
+ struct drbd_resource *resource;
+ unsigned int cpu, min = ~0;
- ord = conn_lowest_minor(connection) % cpumask_weight(cpu_online_mask);
- for_each_online_cpu(cpu) {
- if (ord-- == 0) {
- cpumask_set_cpu(cpu, connection->cpu_mask);
- return;
+ rcu_read_lock();
+ for_each_resource_rcu(resource, &drbd_resources) {
+ for_each_cpu(cpu, resource->cpu_mask)
+ resources_per_cpu[cpu]++;
}
+ rcu_read_unlock();
+ for_each_online_cpu(cpu) {
+ if (resources_per_cpu[cpu] < min) {
+ min = resources_per_cpu[cpu];
+ min_index = cpu;
+ }
+ }
+ kfree(resources_per_cpu);
+ }
+ if (min_index == ~0) {
+ cpumask_setall(*cpu_mask);
+ return;
}
- /* should not be reached */
- cpumask_setall(connection->cpu_mask);
+ cpumask_set_cpu(min_index, *cpu_mask);
}
/**
if (!thi->reset_cpu_mask)
return;
thi->reset_cpu_mask = 0;
- set_cpus_allowed_ptr(p, thi->connection->cpu_mask);
+ set_cpus_allowed_ptr(p, thi->connection->resource->cpu_mask);
}
+#else
+#define drbd_calc_cpu_mask(A) ({})
#endif
/**
return p;
}
-void *drbd_prepare_command(struct drbd_device *device, struct drbd_socket *sock)
+void *drbd_prepare_command(struct drbd_peer_device *peer_device, struct drbd_socket *sock)
{
- return conn_prepare_command(device->connection, sock);
+ return conn_prepare_command(peer_device->connection, sock);
}
static int __send_command(struct drbd_connection *connection, int vnr,
return err;
}
-int drbd_send_command(struct drbd_device *device, struct drbd_socket *sock,
+int drbd_send_command(struct drbd_peer_device *peer_device, struct drbd_socket *sock,
enum drbd_packet cmd, unsigned int header_size,
void *data, unsigned int size)
{
int err;
- err = __send_command(device->connection, device->vnr, sock, cmd, header_size,
- data, size);
+ err = __send_command(peer_device->connection, peer_device->device->vnr,
+ sock, cmd, header_size, data, size);
mutex_unlock(&sock->mutex);
return err;
}
return conn_send_command(connection, sock, P_PING_ACK, 0, NULL, 0);
}
-int drbd_send_sync_param(struct drbd_device *device)
+int drbd_send_sync_param(struct drbd_peer_device *peer_device)
{
struct drbd_socket *sock;
struct p_rs_param_95 *p;
int size;
- const int apv = device->connection->agreed_pro_version;
+ const int apv = peer_device->connection->agreed_pro_version;
enum drbd_packet cmd;
struct net_conf *nc;
struct disk_conf *dc;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
rcu_read_lock();
- nc = rcu_dereference(device->connection->net_conf);
+ nc = rcu_dereference(peer_device->connection->net_conf);
size = apv <= 87 ? sizeof(struct p_rs_param)
: apv == 88 ? sizeof(struct p_rs_param)
/* initialize verify_alg and csums_alg */
memset(p->verify_alg, 0, 2 * SHARED_SECRET_MAX);
- if (get_ldev(device)) {
- dc = rcu_dereference(device->ldev->disk_conf);
+ if (get_ldev(peer_device->device)) {
+ dc = rcu_dereference(peer_device->device->ldev->disk_conf);
p->resync_rate = cpu_to_be32(dc->resync_rate);
p->c_plan_ahead = cpu_to_be32(dc->c_plan_ahead);
p->c_delay_target = cpu_to_be32(dc->c_delay_target);
p->c_fill_target = cpu_to_be32(dc->c_fill_target);
p->c_max_rate = cpu_to_be32(dc->c_max_rate);
- put_ldev(device);
+ put_ldev(peer_device->device);
} else {
p->resync_rate = cpu_to_be32(DRBD_RESYNC_RATE_DEF);
p->c_plan_ahead = cpu_to_be32(DRBD_C_PLAN_AHEAD_DEF);
strcpy(p->csums_alg, nc->csums_alg);
rcu_read_unlock();
- return drbd_send_command(device, sock, cmd, size, NULL, 0);
+ return drbd_send_command(peer_device, sock, cmd, size, NULL, 0);
}
int __drbd_send_protocol(struct drbd_connection *connection, enum drbd_packet cmd)
if (nc->tentative && connection->agreed_pro_version < 92) {
rcu_read_unlock();
mutex_unlock(&sock->mutex);
- conn_err(connection, "--dry-run is not supported by peer");
+ drbd_err(connection, "--dry-run is not supported by peer");
return -EOPNOTSUPP;
}
return err;
}
-static int _drbd_send_uuids(struct drbd_device *device, u64 uuid_flags)
+static int _drbd_send_uuids(struct drbd_peer_device *peer_device, u64 uuid_flags)
{
+ struct drbd_device *device = peer_device->device;
struct drbd_socket *sock;
struct p_uuids *p;
int i;
if (!get_ldev_if_state(device, D_NEGOTIATING))
return 0;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p) {
put_ldev(device);
return -EIO;
device->comm_bm_set = drbd_bm_total_weight(device);
p->uuid[UI_SIZE] = cpu_to_be64(device->comm_bm_set);
rcu_read_lock();
- uuid_flags |= rcu_dereference(device->connection->net_conf)->discard_my_data ? 1 : 0;
+ uuid_flags |= rcu_dereference(peer_device->connection->net_conf)->discard_my_data ? 1 : 0;
rcu_read_unlock();
uuid_flags |= test_bit(CRASHED_PRIMARY, &device->flags) ? 2 : 0;
uuid_flags |= device->new_state_tmp.disk == D_INCONSISTENT ? 4 : 0;
p->uuid[UI_FLAGS] = cpu_to_be64(uuid_flags);
put_ldev(device);
- return drbd_send_command(device, sock, P_UUIDS, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, P_UUIDS, sizeof(*p), NULL, 0);
}
-int drbd_send_uuids(struct drbd_device *device)
+int drbd_send_uuids(struct drbd_peer_device *peer_device)
{
- return _drbd_send_uuids(device, 0);
+ return _drbd_send_uuids(peer_device, 0);
}
-int drbd_send_uuids_skip_initial_sync(struct drbd_device *device)
+int drbd_send_uuids_skip_initial_sync(struct drbd_peer_device *peer_device)
{
- return _drbd_send_uuids(device, 8);
+ return _drbd_send_uuids(peer_device, 8);
}
void drbd_print_uuids(struct drbd_device *device, const char *text)
{
if (get_ldev_if_state(device, D_NEGOTIATING)) {
u64 *uuid = device->ldev->md.uuid;
- dev_info(DEV, "%s %016llX:%016llX:%016llX:%016llX\n",
+ drbd_info(device, "%s %016llX:%016llX:%016llX:%016llX\n",
text,
(unsigned long long)uuid[UI_CURRENT],
(unsigned long long)uuid[UI_BITMAP],
(unsigned long long)uuid[UI_HISTORY_END]);
put_ldev(device);
} else {
- dev_info(DEV, "%s effective data uuid: %016llX\n",
+ drbd_info(device, "%s effective data uuid: %016llX\n",
text,
(unsigned long long)device->ed_uuid);
}
}
-void drbd_gen_and_send_sync_uuid(struct drbd_device *device)
+void drbd_gen_and_send_sync_uuid(struct drbd_peer_device *peer_device)
{
+ struct drbd_device *device = peer_device->device;
struct drbd_socket *sock;
struct p_rs_uuid *p;
u64 uuid;
- D_ASSERT(device->state.disk == D_UP_TO_DATE);
+ D_ASSERT(device, device->state.disk == D_UP_TO_DATE);
uuid = device->ldev->md.uuid[UI_BITMAP];
if (uuid && uuid != UUID_JUST_CREATED)
drbd_print_uuids(device, "updated sync UUID");
drbd_md_sync(device);
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (p) {
p->uuid = cpu_to_be64(uuid);
- drbd_send_command(device, sock, P_SYNC_UUID, sizeof(*p), NULL, 0);
+ drbd_send_command(peer_device, sock, P_SYNC_UUID, sizeof(*p), NULL, 0);
}
}
-int drbd_send_sizes(struct drbd_device *device, int trigger_reply, enum dds_flags flags)
+int drbd_send_sizes(struct drbd_peer_device *peer_device, int trigger_reply, enum dds_flags flags)
{
+ struct drbd_device *device = peer_device->device;
struct drbd_socket *sock;
struct p_sizes *p;
sector_t d_size, u_size;
unsigned int max_bio_size;
if (get_ldev_if_state(device, D_NEGOTIATING)) {
- D_ASSERT(device->ldev->backing_bdev);
+ D_ASSERT(device, device->ldev->backing_bdev);
d_size = drbd_get_max_capacity(device->ldev);
rcu_read_lock();
u_size = rcu_dereference(device->ldev->disk_conf)->disk_size;
max_bio_size = DRBD_MAX_BIO_SIZE; /* ... multiple BIOs per peer_request */
}
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
- if (device->connection->agreed_pro_version <= 94)
+ if (peer_device->connection->agreed_pro_version <= 94)
max_bio_size = min(max_bio_size, DRBD_MAX_SIZE_H80_PACKET);
- else if (device->connection->agreed_pro_version < 100)
+ else if (peer_device->connection->agreed_pro_version < 100)
max_bio_size = min(max_bio_size, DRBD_MAX_BIO_SIZE_P95);
p->d_size = cpu_to_be64(d_size);
p->max_bio_size = cpu_to_be32(max_bio_size);
p->queue_order_type = cpu_to_be16(q_order_type);
p->dds_flags = cpu_to_be16(flags);
- return drbd_send_command(device, sock, P_SIZES, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, P_SIZES, sizeof(*p), NULL, 0);
}
/**
* drbd_send_current_state() - Sends the drbd state to the peer
- * @device: DRBD device.
+ * @peer_device: DRBD peer device.
*/
-int drbd_send_current_state(struct drbd_device *device)
+int drbd_send_current_state(struct drbd_peer_device *peer_device)
{
struct drbd_socket *sock;
struct p_state *p;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
- p->state = cpu_to_be32(device->state.i); /* Within the send mutex */
- return drbd_send_command(device, sock, P_STATE, sizeof(*p), NULL, 0);
+ p->state = cpu_to_be32(peer_device->device->state.i); /* Within the send mutex */
+ return drbd_send_command(peer_device, sock, P_STATE, sizeof(*p), NULL, 0);
}
/**
* drbd_send_state() - After a state change, sends the new state to the peer
- * @device: DRBD device.
+ * @peer_device: DRBD peer device.
* @state: the state to send, not necessarily the current state.
*
* Each state change queues an "after_state_ch" work, which will eventually
* between queuing and processing of the after_state_ch work, we still
* want to send each intermediary state in the order it occurred.
*/
-int drbd_send_state(struct drbd_device *device, union drbd_state state)
+int drbd_send_state(struct drbd_peer_device *peer_device, union drbd_state state)
{
struct drbd_socket *sock;
struct p_state *p;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->state = cpu_to_be32(state.i); /* Within the send mutex */
- return drbd_send_command(device, sock, P_STATE, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, P_STATE, sizeof(*p), NULL, 0);
}
-int drbd_send_state_req(struct drbd_device *device, union drbd_state mask, union drbd_state val)
+int drbd_send_state_req(struct drbd_peer_device *peer_device, union drbd_state mask, union drbd_state val)
{
struct drbd_socket *sock;
struct p_req_state *p;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->mask = cpu_to_be32(mask.i);
p->val = cpu_to_be32(val.i);
- return drbd_send_command(device, sock, P_STATE_CHG_REQ, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, P_STATE_CHG_REQ, sizeof(*p), NULL, 0);
}
int conn_send_state_req(struct drbd_connection *connection, union drbd_state mask, union drbd_state val)
return conn_send_command(connection, sock, cmd, sizeof(*p), NULL, 0);
}
-void drbd_send_sr_reply(struct drbd_device *device, enum drbd_state_rv retcode)
+void drbd_send_sr_reply(struct drbd_peer_device *peer_device, enum drbd_state_rv retcode)
{
struct drbd_socket *sock;
struct p_req_state_reply *p;
- sock = &device->connection->meta;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->meta;
+ p = drbd_prepare_command(peer_device, sock);
if (p) {
p->retcode = cpu_to_be32(retcode);
- drbd_send_command(device, sock, P_STATE_CHG_REPLY, sizeof(*p), NULL, 0);
+ drbd_send_command(peer_device, sock, P_STATE_CHG_REPLY, sizeof(*p), NULL, 0);
}
}
/* may we use this feature? */
rcu_read_lock();
- use_rle = rcu_dereference(device->connection->net_conf)->use_rle;
+ use_rle = rcu_dereference(first_peer_device(device)->connection->net_conf)->use_rle;
rcu_read_unlock();
- if (!use_rle || device->connection->agreed_pro_version < 90)
+ if (!use_rle || first_peer_device(device)->connection->agreed_pro_version < 90)
return 0;
if (c->bit_offset >= c->bm_bits)
/* paranoia: catch zero runlength.
* can only happen if bitmap is modified while we scan it. */
if (rl == 0) {
- dev_err(DEV, "unexpected zero runlength while encoding bitmap "
+ drbd_err(device, "unexpected zero runlength while encoding bitmap "
"t:%u bo:%lu\n", toggle, c->bit_offset);
return -1;
}
if (bits == -ENOBUFS) /* buffer full */
break;
if (bits <= 0) {
- dev_err(DEV, "error while encoding bitmap: %d\n", bits);
+ drbd_err(device, "error while encoding bitmap: %d\n", bits);
return 0;
}
static int
send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
{
- struct drbd_socket *sock = &device->connection->data;
- unsigned int header_size = drbd_header_size(device->connection);
+ struct drbd_socket *sock = &first_peer_device(device)->connection->data;
+ unsigned int header_size = drbd_header_size(first_peer_device(device)->connection);
struct p_compressed_bm *p = sock->sbuf + header_size;
int len, err;
if (len) {
dcbp_set_code(p, RLE_VLI_Bits);
- err = __send_command(device->connection, device->vnr, sock,
+ err = __send_command(first_peer_device(device)->connection, device->vnr, sock,
P_COMPRESSED_BITMAP, sizeof(*p) + len,
NULL, 0);
c->packets[0]++;
len = num_words * sizeof(*p);
if (len)
drbd_bm_get_lel(device, c->word_offset, num_words, p);
- err = __send_command(device->connection, device->vnr, sock, P_BITMAP, len, NULL, 0);
+ err = __send_command(first_peer_device(device)->connection, device->vnr, sock, P_BITMAP, len, NULL, 0);
c->word_offset += num_words;
c->bit_offset = c->word_offset * BITS_PER_LONG;
if (get_ldev(device)) {
if (drbd_md_test_flag(device->ldev, MDF_FULL_SYNC)) {
- dev_info(DEV, "Writing the whole bitmap, MDF_FullSync was set.\n");
+ drbd_info(device, "Writing the whole bitmap, MDF_FullSync was set.\n");
drbd_bm_set_all(device);
if (drbd_bm_write(device)) {
/* write_bm did fail! Leave full sync flag set in Meta P_DATA
* but otherwise process as per normal - need to tell other
* side that a full resync is required! */
- dev_err(DEV, "Failed to write bitmap to disk!\n");
+ drbd_err(device, "Failed to write bitmap to disk!\n");
} else {
drbd_md_clear_flag(device, MDF_FULL_SYNC);
drbd_md_sync(device);
int drbd_send_bitmap(struct drbd_device *device)
{
- struct drbd_socket *sock = &device->connection->data;
+ struct drbd_socket *sock = &first_peer_device(device)->connection->data;
int err = -1;
mutex_lock(&sock->mutex);
* @blksize: size in byte, needs to be in big endian byte order
* @block_id: Id, big endian byte order
*/
-static int _drbd_send_ack(struct drbd_device *device, enum drbd_packet cmd,
+static int _drbd_send_ack(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
u64 sector, u32 blksize, u64 block_id)
{
struct drbd_socket *sock;
struct p_block_ack *p;
- if (device->state.conn < C_CONNECTED)
+ if (peer_device->device->state.conn < C_CONNECTED)
return -EIO;
- sock = &device->connection->meta;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->meta;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->sector = sector;
p->block_id = block_id;
p->blksize = blksize;
- p->seq_num = cpu_to_be32(atomic_inc_return(&device->packet_seq));
- return drbd_send_command(device, sock, cmd, sizeof(*p), NULL, 0);
+ p->seq_num = cpu_to_be32(atomic_inc_return(&peer_device->device->packet_seq));
+ return drbd_send_command(peer_device, sock, cmd, sizeof(*p), NULL, 0);
}
/* dp->sector and dp->block_id already/still in network byte order,
* data_size is payload size according to dp->head,
* and may need to be corrected for digest size. */
-void drbd_send_ack_dp(struct drbd_device *device, enum drbd_packet cmd,
+void drbd_send_ack_dp(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
struct p_data *dp, int data_size)
{
- if (device->connection->peer_integrity_tfm)
- data_size -= crypto_hash_digestsize(device->connection->peer_integrity_tfm);
- _drbd_send_ack(device, cmd, dp->sector, cpu_to_be32(data_size),
+ if (peer_device->connection->peer_integrity_tfm)
+ data_size -= crypto_hash_digestsize(peer_device->connection->peer_integrity_tfm);
+ _drbd_send_ack(peer_device, cmd, dp->sector, cpu_to_be32(data_size),
dp->block_id);
}
-void drbd_send_ack_rp(struct drbd_device *device, enum drbd_packet cmd,
+void drbd_send_ack_rp(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
struct p_block_req *rp)
{
- _drbd_send_ack(device, cmd, rp->sector, rp->blksize, rp->block_id);
+ _drbd_send_ack(peer_device, cmd, rp->sector, rp->blksize, rp->block_id);
}
/**
* @cmd: packet command code
* @peer_req: peer request
*/
-int drbd_send_ack(struct drbd_device *device, enum drbd_packet cmd,
+int drbd_send_ack(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
struct drbd_peer_request *peer_req)
{
- return _drbd_send_ack(device, cmd,
+ return _drbd_send_ack(peer_device, cmd,
cpu_to_be64(peer_req->i.sector),
cpu_to_be32(peer_req->i.size),
peer_req->block_id);
/* This function misuses the block_id field to signal if the blocks
* are is sync or not. */
-int drbd_send_ack_ex(struct drbd_device *device, enum drbd_packet cmd,
+int drbd_send_ack_ex(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
sector_t sector, int blksize, u64 block_id)
{
- return _drbd_send_ack(device, cmd,
+ return _drbd_send_ack(peer_device, cmd,
cpu_to_be64(sector),
cpu_to_be32(blksize),
cpu_to_be64(block_id));
}
-int drbd_send_drequest(struct drbd_device *device, int cmd,
+int drbd_send_drequest(struct drbd_peer_device *peer_device, int cmd,
sector_t sector, int size, u64 block_id)
{
struct drbd_socket *sock;
struct p_block_req *p;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->sector = cpu_to_be64(sector);
p->block_id = block_id;
p->blksize = cpu_to_be32(size);
- return drbd_send_command(device, sock, cmd, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, cmd, sizeof(*p), NULL, 0);
}
-int drbd_send_drequest_csum(struct drbd_device *device, sector_t sector, int size,
+int drbd_send_drequest_csum(struct drbd_peer_device *peer_device, sector_t sector, int size,
void *digest, int digest_size, enum drbd_packet cmd)
{
struct drbd_socket *sock;
/* FIXME: Put the digest into the preallocated socket buffer. */
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->sector = cpu_to_be64(sector);
p->block_id = ID_SYNCER /* unused */;
p->blksize = cpu_to_be32(size);
- return drbd_send_command(device, sock, cmd, sizeof(*p),
- digest, digest_size);
+ return drbd_send_command(peer_device, sock, cmd, sizeof(*p), digest, digest_size);
}
-int drbd_send_ov_request(struct drbd_device *device, sector_t sector, int size)
+int drbd_send_ov_request(struct drbd_peer_device *peer_device, sector_t sector, int size)
{
struct drbd_socket *sock;
struct p_block_req *p;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->sector = cpu_to_be64(sector);
p->block_id = ID_SYNCER /* unused */;
p->blksize = cpu_to_be32(size);
- return drbd_send_command(device, sock, P_OV_REQUEST, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, P_OV_REQUEST, sizeof(*p), NULL, 0);
}
/* called on sndtimeo
drop_it = !--connection->ko_count;
if (!drop_it) {
- conn_err(connection, "[%s/%d] sock_sendmsg time expired, ko = %u\n",
+ drbd_err(connection, "[%s/%d] sock_sendmsg time expired, ko = %u\n",
current->comm, current->pid, connection->ko_count);
request_ping(connection);
}
* As a workaround, we disable sendpage on pages
* with page_count == 0 or PageSlab.
*/
-static int _drbd_no_send_page(struct drbd_device *device, struct page *page,
+static int _drbd_no_send_page(struct drbd_peer_device *peer_device, struct page *page,
int offset, size_t size, unsigned msg_flags)
{
struct socket *socket;
void *addr;
int err;
- socket = device->connection->data.socket;
+ socket = peer_device->connection->data.socket;
addr = kmap(page) + offset;
- err = drbd_send_all(device->connection, socket, addr, size, msg_flags);
+ err = drbd_send_all(peer_device->connection, socket, addr, size, msg_flags);
kunmap(page);
if (!err)
- device->send_cnt += size >> 9;
+ peer_device->device->send_cnt += size >> 9;
return err;
}
-static int _drbd_send_page(struct drbd_device *device, struct page *page,
+static int _drbd_send_page(struct drbd_peer_device *peer_device, struct page *page,
int offset, size_t size, unsigned msg_flags)
{
- struct socket *socket = device->connection->data.socket;
+ struct socket *socket = peer_device->connection->data.socket;
mm_segment_t oldfs = get_fs();
int len = size;
int err = -EIO;
* __page_cache_release a page that would actually still be referenced
* by someone, leading to some obscure delayed Oops somewhere else. */
if (disable_sendpage || (page_count(page) < 1) || PageSlab(page))
- return _drbd_no_send_page(device, page, offset, size, msg_flags);
+ return _drbd_no_send_page(peer_device, page, offset, size, msg_flags);
msg_flags |= MSG_NOSIGNAL;
- drbd_update_congested(device->connection);
+ drbd_update_congested(peer_device->connection);
set_fs(KERNEL_DS);
do {
int sent;
sent = socket->ops->sendpage(socket, page, offset, len, msg_flags);
if (sent <= 0) {
if (sent == -EAGAIN) {
- if (we_should_drop_the_connection(device->connection, socket))
+ if (we_should_drop_the_connection(peer_device->connection, socket))
break;
continue;
}
- dev_warn(DEV, "%s: size=%d len=%d sent=%d\n",
+ drbd_warn(peer_device->device, "%s: size=%d len=%d sent=%d\n",
__func__, (int)size, len, sent);
if (sent < 0)
err = sent;
offset += sent;
} while (len > 0 /* THINK && device->cstate >= C_CONNECTED*/);
set_fs(oldfs);
- clear_bit(NET_CONGESTED, &device->connection->flags);
+ clear_bit(NET_CONGESTED, &peer_device->connection->flags);
if (len == 0) {
err = 0;
- device->send_cnt += size >> 9;
+ peer_device->device->send_cnt += size >> 9;
}
return err;
}
-static int _drbd_send_bio(struct drbd_device *device, struct bio *bio)
+static int _drbd_send_bio(struct drbd_peer_device *peer_device, struct bio *bio)
{
struct bio_vec bvec;
struct bvec_iter iter;
bio_for_each_segment(bvec, bio, iter) {
int err;
- err = _drbd_no_send_page(device, bvec.bv_page,
+ err = _drbd_no_send_page(peer_device, bvec.bv_page,
bvec.bv_offset, bvec.bv_len,
bio_iter_last(bvec, iter)
? 0 : MSG_MORE);
return 0;
}
-static int _drbd_send_zc_bio(struct drbd_device *device, struct bio *bio)
+static int _drbd_send_zc_bio(struct drbd_peer_device *peer_device, struct bio *bio)
{
struct bio_vec bvec;
struct bvec_iter iter;
bio_for_each_segment(bvec, bio, iter) {
int err;
- err = _drbd_send_page(device, bvec.bv_page,
+ err = _drbd_send_page(peer_device, bvec.bv_page,
bvec.bv_offset, bvec.bv_len,
bio_iter_last(bvec, iter) ? 0 : MSG_MORE);
if (err)
return 0;
}
-static int _drbd_send_zc_ee(struct drbd_device *device,
+static int _drbd_send_zc_ee(struct drbd_peer_device *peer_device,
struct drbd_peer_request *peer_req)
{
struct page *page = peer_req->pages;
page_chain_for_each(page) {
unsigned l = min_t(unsigned, len, PAGE_SIZE);
- err = _drbd_send_page(device, page, 0, l,
+ err = _drbd_send_page(peer_device, page, 0, l,
page_chain_next(page) ? MSG_MORE : 0);
if (err)
return err;
return 0;
}
-static u32 bio_flags_to_wire(struct drbd_device *device, unsigned long bi_rw)
+static u32 bio_flags_to_wire(struct drbd_connection *connection, unsigned long bi_rw)
{
- if (device->connection->agreed_pro_version >= 95)
+ if (connection->agreed_pro_version >= 95)
return (bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
(bi_rw & REQ_FUA ? DP_FUA : 0) |
(bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
/* Used to send write requests
* R_PRIMARY -> Peer (P_DATA)
*/
-int drbd_send_dblock(struct drbd_device *device, struct drbd_request *req)
+int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *req)
{
+ struct drbd_device *device = peer_device->device;
struct drbd_socket *sock;
struct p_data *p;
unsigned int dp_flags = 0;
int dgs;
int err;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
- dgs = device->connection->integrity_tfm ? crypto_hash_digestsize(device->connection->integrity_tfm) : 0;
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
+ dgs = peer_device->connection->integrity_tfm ?
+ crypto_hash_digestsize(peer_device->connection->integrity_tfm) : 0;
if (!p)
return -EIO;
p->sector = cpu_to_be64(req->i.sector);
p->block_id = (unsigned long)req;
p->seq_num = cpu_to_be32(atomic_inc_return(&device->packet_seq));
- dp_flags = bio_flags_to_wire(device, req->master_bio->bi_rw);
+ dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio->bi_rw);
if (device->state.conn >= C_SYNC_SOURCE &&
device->state.conn <= C_PAUSED_SYNC_T)
dp_flags |= DP_MAY_SET_IN_SYNC;
- if (device->connection->agreed_pro_version >= 100) {
+ if (peer_device->connection->agreed_pro_version >= 100) {
if (req->rq_state & RQ_EXP_RECEIVE_ACK)
dp_flags |= DP_SEND_RECEIVE_ACK;
if (req->rq_state & RQ_EXP_WRITE_ACK)
}
p->dp_flags = cpu_to_be32(dp_flags);
if (dgs)
- drbd_csum_bio(device, device->connection->integrity_tfm, req->master_bio, p + 1);
- err = __send_command(device->connection, device->vnr, sock, P_DATA, sizeof(*p) + dgs, NULL, req->i.size);
+ drbd_csum_bio(peer_device->connection->integrity_tfm, req->master_bio, p + 1);
+ err = __send_command(peer_device->connection, device->vnr, sock, P_DATA, sizeof(*p) + dgs, NULL, req->i.size);
if (!err) {
/* For protocol A, we have to memcpy the payload into
* socket buffers, as we may complete right away
* receiving side, we sure have detected corruption elsewhere.
*/
if (!(req->rq_state & (RQ_EXP_RECEIVE_ACK | RQ_EXP_WRITE_ACK)) || dgs)
- err = _drbd_send_bio(device, req->master_bio);
+ err = _drbd_send_bio(peer_device, req->master_bio);
else
- err = _drbd_send_zc_bio(device, req->master_bio);
+ err = _drbd_send_zc_bio(peer_device, req->master_bio);
/* double check digest, sometimes buffers have been modified in flight. */
if (dgs > 0 && dgs <= 64) {
/* 64 byte, 512 bit, is the largest digest size
* currently supported in kernel crypto. */
unsigned char digest[64];
- drbd_csum_bio(device, device->connection->integrity_tfm, req->master_bio, digest);
+ drbd_csum_bio(peer_device->connection->integrity_tfm, req->master_bio, digest);
if (memcmp(p + 1, digest, dgs)) {
- dev_warn(DEV,
+ drbd_warn(device,
"Digest mismatch, buffer modified by upper layers during write: %llus +%u\n",
(unsigned long long)req->i.sector, req->i.size);
}
* Peer -> (diskless) R_PRIMARY (P_DATA_REPLY)
* C_SYNC_SOURCE -> C_SYNC_TARGET (P_RS_DATA_REPLY)
*/
-int drbd_send_block(struct drbd_device *device, enum drbd_packet cmd,
+int drbd_send_block(struct drbd_peer_device *peer_device, enum drbd_packet cmd,
struct drbd_peer_request *peer_req)
{
+ struct drbd_device *device = peer_device->device;
struct drbd_socket *sock;
struct p_data *p;
int err;
int dgs;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
- dgs = device->connection->integrity_tfm ? crypto_hash_digestsize(device->connection->integrity_tfm) : 0;
+ dgs = peer_device->connection->integrity_tfm ?
+ crypto_hash_digestsize(peer_device->connection->integrity_tfm) : 0;
if (!p)
return -EIO;
p->seq_num = 0; /* unused */
p->dp_flags = 0;
if (dgs)
- drbd_csum_ee(device, device->connection->integrity_tfm, peer_req, p + 1);
- err = __send_command(device->connection, device->vnr, sock, cmd, sizeof(*p) + dgs, NULL, peer_req->i.size);
+ drbd_csum_ee(peer_device->connection->integrity_tfm, peer_req, p + 1);
+ err = __send_command(peer_device->connection, device->vnr, sock, cmd, sizeof(*p) + dgs, NULL, peer_req->i.size);
if (!err)
- err = _drbd_send_zc_ee(device, peer_req);
+ err = _drbd_send_zc_ee(peer_device, peer_req);
mutex_unlock(&sock->mutex); /* locked by drbd_prepare_command() */
return err;
}
-int drbd_send_out_of_sync(struct drbd_device *device, struct drbd_request *req)
+int drbd_send_out_of_sync(struct drbd_peer_device *peer_device, struct drbd_request *req)
{
struct drbd_socket *sock;
struct p_block_desc *p;
- sock = &device->connection->data;
- p = drbd_prepare_command(device, sock);
+ sock = &peer_device->connection->data;
+ p = drbd_prepare_command(peer_device, sock);
if (!p)
return -EIO;
p->sector = cpu_to_be64(req->i.sector);
p->blksize = cpu_to_be32(req->i.size);
- return drbd_send_command(device, sock, P_OUT_OF_SYNC, sizeof(*p), NULL, 0);
+ return drbd_send_command(peer_device, sock, P_OUT_OF_SYNC, sizeof(*p), NULL, 0);
}
/*
if (rv <= 0) {
if (rv != -EAGAIN) {
- conn_err(connection, "%s_sendmsg returned %d\n",
+ drbd_err(connection, "%s_sendmsg returned %d\n",
sock == connection->meta.socket ? "msock" : "sock",
rv);
conn_request_state(connection, NS(conn, C_BROKEN_PIPE), CS_HARD);
int rv = 0;
mutex_lock(&drbd_main_mutex);
- spin_lock_irqsave(&device->connection->req_lock, flags);
+ spin_lock_irqsave(&device->resource->req_lock, flags);
/* to have a stable device->state.role
* and no race with updating open_cnt */
if (!rv)
device->open_cnt++;
- spin_unlock_irqrestore(&device->connection->req_lock, flags);
+ spin_unlock_irqrestore(&device->resource->req_lock, flags);
mutex_unlock(&drbd_main_mutex);
return rv;
void drbd_device_cleanup(struct drbd_device *device)
{
int i;
- if (device->connection->receiver.t_state != NONE)
- dev_err(DEV, "ASSERT FAILED: receiver t_state == %d expected 0.\n",
- device->connection->receiver.t_state);
+ if (first_peer_device(device)->connection->receiver.t_state != NONE)
+ drbd_err(device, "ASSERT FAILED: receiver t_state == %d expected 0.\n",
+ first_peer_device(device)->connection->receiver.t_state);
device->al_writ_cnt =
device->bm_writ_cnt =
device->rs_mark_left[i] = 0;
device->rs_mark_time[i] = 0;
}
- D_ASSERT(device->connection->net_conf == NULL);
+ D_ASSERT(device, first_peer_device(device)->connection->net_conf == NULL);
drbd_set_my_capacity(device, 0);
if (device->bitmap) {
clear_bit(AL_SUSPENDED, &device->flags);
- D_ASSERT(list_empty(&device->active_ee));
- D_ASSERT(list_empty(&device->sync_ee));
- D_ASSERT(list_empty(&device->done_ee));
- D_ASSERT(list_empty(&device->read_ee));
- D_ASSERT(list_empty(&device->net_ee));
- D_ASSERT(list_empty(&device->resync_reads));
- D_ASSERT(list_empty(&device->connection->sender_work.q));
- D_ASSERT(list_empty(&device->resync_work.list));
- D_ASSERT(list_empty(&device->unplug_work.list));
- D_ASSERT(list_empty(&device->go_diskless.list));
+ D_ASSERT(device, list_empty(&device->active_ee));
+ D_ASSERT(device, list_empty(&device->sync_ee));
+ D_ASSERT(device, list_empty(&device->done_ee));
+ D_ASSERT(device, list_empty(&device->read_ee));
+ D_ASSERT(device, list_empty(&device->net_ee));
+ D_ASSERT(device, list_empty(&device->resync_reads));
+ D_ASSERT(device, list_empty(&first_peer_device(device)->connection->sender_work.q));
+ D_ASSERT(device, list_empty(&device->resync_work.list));
+ D_ASSERT(device, list_empty(&device->unplug_work.list));
+ D_ASSERT(device, list_empty(&device->go_diskless.list));
drbd_set_defaults(device);
}
drbd_pp_vacant--;
}
- /* D_ASSERT(atomic_read(&drbd_pp_vacant)==0); */
+ /* D_ASSERT(device, atomic_read(&drbd_pp_vacant)==0); */
if (drbd_md_io_bio_set)
bioset_free(drbd_md_io_bio_set);
rr = drbd_free_peer_reqs(device, &device->active_ee);
if (rr)
- dev_err(DEV, "%d EEs in active list found!\n", rr);
+ drbd_err(device, "%d EEs in active list found!\n", rr);
rr = drbd_free_peer_reqs(device, &device->sync_ee);
if (rr)
- dev_err(DEV, "%d EEs in sync list found!\n", rr);
+ drbd_err(device, "%d EEs in sync list found!\n", rr);
rr = drbd_free_peer_reqs(device, &device->read_ee);
if (rr)
- dev_err(DEV, "%d EEs in read list found!\n", rr);
+ drbd_err(device, "%d EEs in read list found!\n", rr);
rr = drbd_free_peer_reqs(device, &device->done_ee);
if (rr)
- dev_err(DEV, "%d EEs in done list found!\n", rr);
+ drbd_err(device, "%d EEs in done list found!\n", rr);
rr = drbd_free_peer_reqs(device, &device->net_ee);
if (rr)
- dev_err(DEV, "%d EEs in net list found!\n", rr);
+ drbd_err(device, "%d EEs in net list found!\n", rr);
}
/* caution. no locking. */
-void drbd_minor_destroy(struct kref *kref)
+void drbd_destroy_device(struct kref *kref)
{
struct drbd_device *device = container_of(kref, struct drbd_device, kref);
- struct drbd_connection *connection = device->connection;
+ struct drbd_resource *resource = device->resource;
+ struct drbd_connection *connection;
del_timer_sync(&device->request_timer);
/* paranoia asserts */
- D_ASSERT(device->open_cnt == 0);
+ D_ASSERT(device, device->open_cnt == 0);
/* end paranoia asserts */
/* cleanup stuff that may have been allocated during
put_disk(device->vdisk);
blk_cleanup_queue(device->rq_queue);
kfree(device->rs_plan_s);
+ kfree(first_peer_device(device));
kfree(device);
- kref_put(&connection->kref, &conn_destroy);
+ for_each_connection(connection, resource)
+ kref_put(&connection->kref, drbd_destroy_connection);
+ kref_put(&resource->kref, drbd_destroy_resource);
}
/* One global retry thread, if we need to push back some bio and have it
(req->rq_state & RQ_LOCAL_ABORTED) != 0);
if (!expected)
- dev_err(DEV, "req=%p completion_ref=%d rq_state=%x\n",
+ drbd_err(device, "req=%p completion_ref=%d rq_state=%x\n",
req, atomic_read(&req->completion_ref),
req->rq_state);
queue_work(retry.wq, &retry.worker);
}
+void drbd_destroy_resource(struct kref *kref)
+{
+ struct drbd_resource *resource =
+ container_of(kref, struct drbd_resource, kref);
+
+ idr_destroy(&resource->devices);
+ free_cpumask_var(resource->cpu_mask);
+ kfree(resource->name);
+ kfree(resource);
+}
+
+void drbd_free_resource(struct drbd_resource *resource)
+{
+ struct drbd_connection *connection, *tmp;
+
+ for_each_connection_safe(connection, tmp, resource) {
+ list_del(&connection->connections);
+ kref_put(&connection->kref, drbd_destroy_connection);
+ }
+ kref_put(&resource->kref, drbd_destroy_resource);
+}
static void drbd_cleanup(void)
{
unsigned int i;
struct drbd_device *device;
- struct drbd_connection *connection, *tmp;
+ struct drbd_resource *resource, *tmp;
unregister_reboot_notifier(&drbd_notifier);
drbd_genl_unregister();
- idr_for_each_entry(&minors, device, i) {
- idr_remove(&minors, device_to_minor(device));
- idr_remove(&device->connection->volumes, device->vnr);
- destroy_workqueue(device->submit.wq);
- del_gendisk(device->vdisk);
- /* synchronize_rcu(); No other threads running at this point */
- kref_put(&device->kref, &drbd_minor_destroy);
- }
+ idr_for_each_entry(&drbd_devices, device, i)
+ drbd_delete_device(device);
/* not _rcu since, no other updater anymore. Genl already unregistered */
- list_for_each_entry_safe(connection, tmp, &drbd_connections, connections) {
- list_del(&connection->connections); /* not _rcu no proc, not other threads */
- /* synchronize_rcu(); */
- kref_put(&connection->kref, &conn_destroy);
+ for_each_resource_safe(resource, tmp, &drbd_resources) {
+ list_del(&resource->resources);
+ drbd_free_resource(resource);
}
drbd_destroy_mempools();
unregister_blkdev(DRBD_MAJOR, "drbd");
- idr_destroy(&minors);
+ idr_destroy(&drbd_devices);
printk(KERN_INFO "drbd: module cleanup done.\n");
}
goto out;
}
- if (test_bit(CALLBACK_PENDING, &device->connection->flags)) {
+ if (test_bit(CALLBACK_PENDING, &first_peer_device(device)->connection->flags)) {
r |= (1 << BDI_async_congested);
/* Without good local data, we would need to read from remote,
* and that would need the worker thread as well, which is
reason = 'b';
}
- if (bdi_bits & (1 << BDI_async_congested) && test_bit(NET_CONGESTED, &device->connection->flags)) {
+ if (bdi_bits & (1 << BDI_async_congested) &&
+ test_bit(NET_CONGESTED, &first_peer_device(device)->connection->flags)) {
r |= (1 << BDI_async_congested);
reason = reason == 'b' ? 'a' : 'n';
}
init_waitqueue_head(&wq->q_wait);
}
-struct drbd_connection *conn_get_by_name(const char *name)
+struct drbd_resource *drbd_find_resource(const char *name)
{
- struct drbd_connection *connection;
+ struct drbd_resource *resource;
if (!name || !name[0])
return NULL;
rcu_read_lock();
- list_for_each_entry_rcu(connection, &drbd_connections, connections) {
- if (!strcmp(connection->name, name)) {
- kref_get(&connection->kref);
+ for_each_resource_rcu(resource, &drbd_resources) {
+ if (!strcmp(resource->name, name)) {
+ kref_get(&resource->kref);
goto found;
}
}
- connection = NULL;
+ resource = NULL;
found:
rcu_read_unlock();
- return connection;
+ return resource;
}
struct drbd_connection *conn_get_by_addrs(void *my_addr, int my_addr_len,
void *peer_addr, int peer_addr_len)
{
+ struct drbd_resource *resource;
struct drbd_connection *connection;
rcu_read_lock();
- list_for_each_entry_rcu(connection, &drbd_connections, connections) {
- if (connection->my_addr_len == my_addr_len &&
- connection->peer_addr_len == peer_addr_len &&
- !memcmp(&connection->my_addr, my_addr, my_addr_len) &&
- !memcmp(&connection->peer_addr, peer_addr, peer_addr_len)) {
- kref_get(&connection->kref);
- goto found;
+ for_each_resource_rcu(resource, &drbd_resources) {
+ for_each_connection_rcu(connection, resource) {
+ if (connection->my_addr_len == my_addr_len &&
+ connection->peer_addr_len == peer_addr_len &&
+ !memcmp(&connection->my_addr, my_addr, my_addr_len) &&
+ !memcmp(&connection->peer_addr, peer_addr, peer_addr_len)) {
+ kref_get(&connection->kref);
+ goto found;
+ }
}
}
connection = NULL;
connection->int_dig_vv = NULL;
}
-int set_resource_options(struct drbd_connection *connection, struct res_opts *res_opts)
+int set_resource_options(struct drbd_resource *resource, struct res_opts *res_opts)
{
+ struct drbd_connection *connection;
cpumask_var_t new_cpu_mask;
int err;
/* silently ignore cpu mask on UP kernel */
if (nr_cpu_ids > 1 && res_opts->cpu_mask[0] != 0) {
- /* FIXME: Get rid of constant 32 here */
- err = bitmap_parse(res_opts->cpu_mask, 32,
+ err = bitmap_parse(res_opts->cpu_mask, DRBD_CPU_MASK_SIZE,
cpumask_bits(new_cpu_mask), nr_cpu_ids);
if (err) {
- conn_warn(connection, "bitmap_parse() failed with %d\n", err);
+ drbd_warn(resource, "bitmap_parse() failed with %d\n", err);
/* retcode = ERR_CPU_MASK_PARSE; */
goto fail;
}
}
- connection->res_opts = *res_opts;
- if (!cpumask_equal(connection->cpu_mask, new_cpu_mask)) {
- cpumask_copy(connection->cpu_mask, new_cpu_mask);
- drbd_calc_cpu_mask(connection);
- connection->receiver.reset_cpu_mask = 1;
- connection->asender.reset_cpu_mask = 1;
- connection->worker.reset_cpu_mask = 1;
+ resource->res_opts = *res_opts;
+ if (cpumask_empty(new_cpu_mask))
+ drbd_calc_cpu_mask(&new_cpu_mask);
+ if (!cpumask_equal(resource->cpu_mask, new_cpu_mask)) {
+ cpumask_copy(resource->cpu_mask, new_cpu_mask);
+ for_each_connection_rcu(connection, resource) {
+ connection->receiver.reset_cpu_mask = 1;
+ connection->asender.reset_cpu_mask = 1;
+ connection->worker.reset_cpu_mask = 1;
+ }
}
err = 0;
}
+struct drbd_resource *drbd_create_resource(const char *name)
+{
+ struct drbd_resource *resource;
+
+ resource = kzalloc(sizeof(struct drbd_resource), GFP_KERNEL);
+ if (!resource)
+ goto fail;
+ resource->name = kstrdup(name, GFP_KERNEL);
+ if (!resource->name)
+ goto fail_free_resource;
+ if (!zalloc_cpumask_var(&resource->cpu_mask, GFP_KERNEL))
+ goto fail_free_name;
+ kref_init(&resource->kref);
+ idr_init(&resource->devices);
+ INIT_LIST_HEAD(&resource->connections);
+ list_add_tail_rcu(&resource->resources, &drbd_resources);
+ mutex_init(&resource->conf_update);
+ spin_lock_init(&resource->req_lock);
+ return resource;
+
+fail_free_name:
+ kfree(resource->name);
+fail_free_resource:
+ kfree(resource);
+fail:
+ return NULL;
+}
+
/* caller must be under genl_lock() */
struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts)
{
+ struct drbd_resource *resource;
struct drbd_connection *connection;
connection = kzalloc(sizeof(struct drbd_connection), GFP_KERNEL);
if (!connection)
return NULL;
- connection->name = kstrdup(name, GFP_KERNEL);
- if (!connection->name)
- goto fail;
-
if (drbd_alloc_socket(&connection->data))
goto fail;
if (drbd_alloc_socket(&connection->meta))
goto fail;
- if (!zalloc_cpumask_var(&connection->cpu_mask, GFP_KERNEL))
- goto fail;
-
- if (set_resource_options(connection, res_opts))
- goto fail;
-
connection->current_epoch = kzalloc(sizeof(struct drbd_epoch), GFP_KERNEL);
if (!connection->current_epoch)
goto fail;
connection->send.current_epoch_nr = 0;
connection->send.current_epoch_writes = 0;
+ resource = drbd_create_resource(name);
+ if (!resource)
+ goto fail;
+
connection->cstate = C_STANDALONE;
mutex_init(&connection->cstate_mutex);
- 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);
mutex_init(&connection->meta.mutex);
- drbd_thread_init(connection, &connection->receiver, drbdd_init, "receiver");
+ drbd_thread_init(connection, &connection->receiver, drbd_receiver, "receiver");
drbd_thread_init(connection, &connection->worker, drbd_worker, "worker");
drbd_thread_init(connection, &connection->asender, drbd_asender, "asender");
kref_init(&connection->kref);
- list_add_tail_rcu(&connection->connections, &drbd_connections);
+ connection->resource = resource;
+
+ if (set_resource_options(resource, res_opts))
+ goto fail_resource;
+
+ kref_get(&resource->kref);
+ list_add_tail_rcu(&connection->connections, &resource->connections);
return connection;
+fail_resource:
+ list_del(&resource->resources);
+ drbd_free_resource(resource);
fail:
kfree(connection->current_epoch);
- free_cpumask_var(connection->cpu_mask);
drbd_free_socket(&connection->meta);
drbd_free_socket(&connection->data);
- kfree(connection->name);
kfree(connection);
-
return NULL;
}
-void conn_destroy(struct kref *kref)
+void drbd_destroy_connection(struct kref *kref)
{
struct drbd_connection *connection = container_of(kref, struct drbd_connection, kref);
+ struct drbd_resource *resource = connection->resource;
if (atomic_read(&connection->current_epoch->epoch_size) != 0)
- conn_err(connection, "epoch_size:%d\n", atomic_read(&connection->current_epoch->epoch_size));
+ drbd_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);
drbd_free_socket(&connection->data);
- kfree(connection->name);
kfree(connection->int_dig_in);
kfree(connection->int_dig_vv);
kfree(connection);
+ kref_put(&resource->kref, drbd_destroy_resource);
}
static int init_submitter(struct drbd_device *device)
return 0;
}
-enum drbd_ret_code conn_new_minor(struct drbd_connection *connection, unsigned int minor, int vnr)
+enum drbd_ret_code drbd_create_device(struct drbd_resource *resource, unsigned int minor, int vnr)
{
+ struct drbd_connection *connection;
struct drbd_device *device;
+ struct drbd_peer_device *peer_device, *tmp_peer_device;
struct gendisk *disk;
struct request_queue *q;
- int vnr_got = vnr;
- int minor_got = minor;
+ int id;
enum drbd_ret_code err = ERR_NOMEM;
device = minor_to_device(minor);
device = kzalloc(sizeof(struct drbd_device), GFP_KERNEL);
if (!device)
return ERR_NOMEM;
+ kref_init(&device->kref);
- kref_get(&connection->kref);
- device->connection = connection;
-
+ kref_get(&resource->kref);
+ device->resource = resource;
device->minor = minor;
device->vnr = vnr;
blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8);
blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
blk_queue_merge_bvec(q, drbd_merge_bvec);
- q->queue_lock = &device->connection->req_lock; /* needed since we use */
+ q->queue_lock = &resource->req_lock;
device->md_io_page = alloc_page(GFP_KERNEL);
if (!device->md_io_page)
device->read_requests = RB_ROOT;
device->write_requests = RB_ROOT;
- minor_got = idr_alloc(&minors, device, minor, minor + 1, GFP_KERNEL);
- if (minor_got < 0) {
- if (minor_got == -ENOSPC) {
+ id = idr_alloc(&drbd_devices, device, minor, minor + 1, GFP_KERNEL);
+ if (id < 0) {
+ if (id == -ENOSPC) {
err = ERR_MINOR_EXISTS;
drbd_msg_put_info("requested minor exists already");
}
goto out_no_minor_idr;
}
+ kref_get(&device->kref);
- vnr_got = idr_alloc(&connection->volumes, device, vnr, vnr + 1, GFP_KERNEL);
- if (vnr_got < 0) {
- if (vnr_got == -ENOSPC) {
- err = ERR_INVALID_REQUEST;
- drbd_msg_put_info("requested volume exists already");
+ id = idr_alloc(&resource->devices, device, vnr, vnr + 1, GFP_KERNEL);
+ if (id < 0) {
+ if (id == -ENOSPC) {
+ err = ERR_MINOR_EXISTS;
+ drbd_msg_put_info("requested minor exists already");
}
goto out_idr_remove_minor;
}
+ kref_get(&device->kref);
+
+ INIT_LIST_HEAD(&device->peer_devices);
+ for_each_connection(connection, resource) {
+ peer_device = kzalloc(sizeof(struct drbd_peer_device), GFP_KERNEL);
+ if (!peer_device)
+ goto out_idr_remove_from_resource;
+ peer_device->connection = connection;
+ peer_device->device = device;
+
+ list_add(&peer_device->peer_devices, &device->peer_devices);
+ kref_get(&device->kref);
+
+ id = idr_alloc(&connection->peer_devices, peer_device, vnr, vnr + 1, GFP_KERNEL);
+ if (id < 0) {
+ if (id == -ENOSPC) {
+ err = ERR_INVALID_REQUEST;
+ drbd_msg_put_info("requested volume exists already");
+ }
+ goto out_idr_remove_from_resource;
+ }
+ kref_get(&connection->kref);
+ }
if (init_submitter(device)) {
err = ERR_NOMEM;
}
add_disk(disk);
- kref_init(&device->kref); /* one ref for both idrs and the the add_disk */
/* inherit the connection state */
- device->state.conn = connection->cstate;
- if (device->state.conn == C_WF_REPORT_PARAMS)
- drbd_connected(device);
+ device->state.conn = first_connection(resource)->cstate;
+ if (device->state.conn == C_WF_REPORT_PARAMS) {
+ for_each_peer_device(peer_device, device)
+ drbd_connected(peer_device);
+ }
return NO_ERROR;
out_idr_remove_vol:
- idr_remove(&connection->volumes, vnr_got);
+ idr_remove(&connection->peer_devices, vnr);
+out_idr_remove_from_resource:
+ for_each_connection(connection, resource) {
+ peer_device = idr_find(&connection->peer_devices, vnr);
+ if (peer_device) {
+ idr_remove(&connection->peer_devices, vnr);
+ kref_put(&connection->kref, drbd_destroy_connection);
+ }
+ }
+ for_each_peer_device_safe(peer_device, tmp_peer_device, device) {
+ list_del(&peer_device->peer_devices);
+ kfree(peer_device);
+ }
+ idr_remove(&resource->devices, vnr);
out_idr_remove_minor:
- idr_remove(&minors, minor_got);
+ idr_remove(&drbd_devices, minor);
synchronize_rcu();
out_no_minor_idr:
drbd_bm_cleanup(device);
out_no_disk:
blk_cleanup_queue(q);
out_no_q:
+ kref_put(&resource->kref, drbd_destroy_resource);
kfree(device);
- kref_put(&connection->kref, &conn_destroy);
return err;
}
+void drbd_delete_device(struct drbd_device *device)
+{
+ struct drbd_resource *resource = device->resource;
+ struct drbd_connection *connection;
+ int refs = 3;
+
+ for_each_connection(connection, resource) {
+ idr_remove(&connection->peer_devices, device->vnr);
+ refs++;
+ }
+ idr_remove(&resource->devices, device->vnr);
+ idr_remove(&drbd_devices, device_to_minor(device));
+ del_gendisk(device->vdisk);
+ synchronize_rcu();
+ kref_sub(&device->kref, refs, drbd_destroy_device);
+}
+
int __init drbd_init(void)
{
int err;
init_waitqueue_head(&drbd_pp_wait);
drbd_proc = NULL; /* play safe for drbd_cleanup */
- idr_init(&minors);
+ idr_init(&drbd_devices);
rwlock_init(&global_state_lock);
- INIT_LIST_HEAD(&drbd_connections);
+ INIT_LIST_HEAD(&drbd_resources);
err = drbd_genl_register();
if (err) {
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);
- kref_put(&device->kref, &drbd_minor_destroy);
+ kref_put(&device->kref, drbd_destroy_device);
rcu_read_lock();
}
rcu_read_unlock();
buffer->al_stripes = cpu_to_be32(device->ldev->md.al_stripes);
buffer->al_stripe_size_4k = cpu_to_be32(device->ldev->md.al_stripe_size_4k);
- D_ASSERT(drbd_md_ss(device->ldev) == device->ldev->md.md_offset);
+ D_ASSERT(device, drbd_md_ss(device->ldev) == device->ldev->md.md_offset);
sector = device->ldev->md.md_offset;
if (drbd_md_sync_page_io(device, device->ldev, sector, WRITE)) {
/* this was a try anyways ... */
- dev_err(DEV, "meta data update failed!\n");
+ drbd_err(device, "meta data update failed!\n");
drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
}
}
return 0;
err:
- dev_err(DEV, "invalid activity log striping: al_stripes=%u, al_stripe_size_4k=%u\n",
+ drbd_err(device, "invalid activity log striping: al_stripes=%u, al_stripe_size_4k=%u\n",
al_stripes, al_stripe_size_4k);
return -EINVAL;
}
return 0;
err:
- dev_err(DEV, "meta data offsets don't make sense: idx=%d "
+ drbd_err(device, "meta data offsets don't make sense: idx=%d "
"al_s=%u, al_sz4k=%u, al_offset=%d, bm_offset=%d, "
"md_size_sect=%u, la_size=%llu, md_capacity=%llu\n",
in_core->meta_dev_idx,
if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset, READ)) {
/* NOTE: can't do normal error processing here as this is
called BEFORE disk is attached */
- dev_err(DEV, "Error while reading metadata.\n");
+ drbd_err(device, "Error while reading metadata.\n");
rv = ERR_IO_MD_DISK;
goto err;
}
if (magic == DRBD_MD_MAGIC_84_UNCLEAN ||
(magic == DRBD_MD_MAGIC_08 && !(flags & MDF_AL_CLEAN))) {
/* btw: that's Activity Log clean, not "all" clean. */
- dev_err(DEV, "Found unclean meta data. Did you \"drbdadm apply-al\"?\n");
+ drbd_err(device, "Found unclean meta data. Did you \"drbdadm apply-al\"?\n");
rv = ERR_MD_UNCLEAN;
goto err;
}
rv = ERR_MD_INVALID;
if (magic != DRBD_MD_MAGIC_08) {
if (magic == DRBD_MD_MAGIC_07)
- dev_err(DEV, "Found old (0.7) meta data magic. Did you \"drbdadm create-md\"?\n");
+ drbd_err(device, "Found old (0.7) meta data magic. Did you \"drbdadm create-md\"?\n");
else
- dev_err(DEV, "Meta data magic not found. Did you \"drbdadm create-md\"?\n");
+ drbd_err(device, "Meta data magic not found. Did you \"drbdadm create-md\"?\n");
goto err;
}
if (be32_to_cpu(buffer->bm_bytes_per_bit) != BM_BLOCK_SIZE) {
- dev_err(DEV, "unexpected bm_bytes_per_bit: %u (expected %u)\n",
+ drbd_err(device, "unexpected bm_bytes_per_bit: %u (expected %u)\n",
be32_to_cpu(buffer->bm_bytes_per_bit), BM_BLOCK_SIZE);
goto err;
}
goto err;
if (be32_to_cpu(buffer->bm_offset) != bdev->md.bm_offset) {
- dev_err(DEV, "unexpected bm_offset: %d (expected %d)\n",
+ drbd_err(device, "unexpected bm_offset: %d (expected %d)\n",
be32_to_cpu(buffer->bm_offset), bdev->md.bm_offset);
goto err;
}
if (be32_to_cpu(buffer->md_size_sect) != bdev->md.md_size_sect) {
- dev_err(DEV, "unexpected md_size: %u (expected %u)\n",
+ drbd_err(device, "unexpected md_size: %u (expected %u)\n",
be32_to_cpu(buffer->md_size_sect), bdev->md.md_size_sect);
goto err;
}
rv = NO_ERROR;
- spin_lock_irq(&device->connection->req_lock);
+ spin_lock_irq(&device->resource->req_lock);
if (device->state.conn < C_CONNECTED) {
unsigned int peer;
peer = be32_to_cpu(buffer->la_peer_max_bio_size);
peer = max(peer, DRBD_MAX_BIO_SIZE_SAFE);
device->peer_max_bio_size = peer;
}
- spin_unlock_irq(&device->connection->req_lock);
+ spin_unlock_irq(&device->resource->req_lock);
err:
drbd_md_put_buffer(device);
bm_uuid = device->ldev->md.uuid[UI_BITMAP];
if (bm_uuid)
- dev_warn(DEV, "bm UUID was already set: %llX\n", bm_uuid);
+ drbd_warn(device, "bm UUID was already set: %llX\n", bm_uuid);
device->ldev->md.uuid[UI_BITMAP] = device->ldev->md.uuid[UI_CURRENT];
__drbd_uuid_set(device, UI_CURRENT, val);
} else {
unsigned long long bm_uuid = device->ldev->md.uuid[UI_BITMAP];
if (bm_uuid)
- dev_warn(DEV, "bm UUID was already set: %llX\n", bm_uuid);
+ drbd_warn(device, "bm UUID was already set: %llX\n", bm_uuid);
device->ldev->md.uuid[UI_BITMAP] = val & ~((u64)1);
}
struct drbd_device *device = w->device;
int rv = -EIO;
- D_ASSERT(atomic_read(&device->ap_bio_cnt) == 0);
+ D_ASSERT(device, atomic_read(&device->ap_bio_cnt) == 0);
if (get_ldev(device)) {
drbd_bm_lock(device, work->why, work->flags);
{
struct drbd_device *device = w->device;
- D_ASSERT(device->state.disk == D_FAILED);
+ D_ASSERT(device, device->state.disk == D_FAILED);
/* we cannot assert local_cnt == 0 here, as get_ldev_if_state will
* inc/dec it frequently. Once we are D_DISKLESS, no one will touch
* the protected members anymore, though, so once put_ldev reaches zero
void (*done)(struct drbd_device *, int),
char *why, enum bm_flag flags)
{
- D_ASSERT(current == device->connection->worker.task);
+ D_ASSERT(device, current == first_peer_device(device)->connection->worker.task);
- D_ASSERT(!test_bit(BITMAP_IO_QUEUED, &device->flags));
- D_ASSERT(!test_bit(BITMAP_IO, &device->flags));
- D_ASSERT(list_empty(&device->bm_io_work.w.list));
+ D_ASSERT(device, !test_bit(BITMAP_IO_QUEUED, &device->flags));
+ D_ASSERT(device, !test_bit(BITMAP_IO, &device->flags));
+ D_ASSERT(device, list_empty(&device->bm_io_work.w.list));
if (device->bm_io_work.why)
- dev_err(DEV, "FIXME going to queue '%s' but '%s' still pending?\n",
+ drbd_err(device, "FIXME going to queue '%s' but '%s' still pending?\n",
why, device->bm_io_work.why);
device->bm_io_work.io_fn = io_fn;
device->bm_io_work.why = why;
device->bm_io_work.flags = flags;
- spin_lock_irq(&device->connection->req_lock);
+ spin_lock_irq(&device->resource->req_lock);
set_bit(BITMAP_IO, &device->flags);
if (atomic_read(&device->ap_bio_cnt) == 0) {
if (!test_and_set_bit(BITMAP_IO_QUEUED, &device->flags))
- drbd_queue_work(&device->connection->sender_work, &device->bm_io_work.w);
+ drbd_queue_work(&first_peer_device(device)->connection->sender_work, &device->bm_io_work.w);
}
- spin_unlock_irq(&device->connection->req_lock);
+ spin_unlock_irq(&device->resource->req_lock);
}
/**
{
int rv;
- D_ASSERT(current != device->connection->worker.task);
+ D_ASSERT(device, current != first_peer_device(device)->connection->worker.task);
if ((flags & BM_LOCKED_SET_ALLOWED) == 0)
drbd_suspend_io(device);
/* must not double-queue! */
if (list_empty(&device->md_sync_work.list))
- drbd_queue_work_front(&device->connection->sender_work, &device->md_sync_work);
+ drbd_queue_work_front(&first_peer_device(device)->connection->sender_work, &device->md_sync_work);
}
static int w_md_sync(struct drbd_work *w, int unused)
{
struct drbd_device *device = w->device;
- dev_warn(DEV, "md_sync_timer expired! Worker calls drbd_md_sync().\n");
+ drbd_warn(device, "md_sync_timer expired! Worker calls drbd_md_sync().\n");
#ifdef DEBUG
- dev_warn(DEV, "last md_mark_dirty: %s:%u\n",
+ drbd_warn(device, "last md_mark_dirty: %s:%u\n",
device->last_md_mark_dirty.func, device->last_md_mark_dirty.line);
#endif
drbd_md_sync(device);
long timeout;
rcu_read_lock();
- nc = rcu_dereference(device->connection->net_conf);
+ nc = rcu_dereference(first_peer_device(device)->connection->net_conf);
if (!nc) {
rcu_read_unlock();
return -ETIMEDOUT;
/* Indicate to wake up device->misc_wait on progress. */
i->waiting = true;
prepare_to_wait(&device->misc_wait, &wait, TASK_INTERRUPTIBLE);
- spin_unlock_irq(&device->connection->req_lock);
+ spin_unlock_irq(&device->resource->req_lock);
timeout = schedule_timeout(timeout);
finish_wait(&device->misc_wait, &wait);
- spin_lock_irq(&device->connection->req_lock);
+ spin_lock_irq(&device->resource->req_lock);
if (!timeout || device->state.conn < C_CONNECTED)
return -ETIMEDOUT;
if (signal_pending(current))
fault_count++;
if (__ratelimit(&drbd_ratelimit_state))
- dev_warn(DEV, "***Simulating %s failure\n",
+ drbd_warn(device, "***Simulating %s failure\n",
_drbd_fault_str(type));
}
projects / deliverable / linux.git / blobdiff