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drbd: Move conf_mutex from connection to resource 

Signed-off-by: Andreas Gruenbacher <agruen@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
This commit is contained in:
Andreas Gruenbacher 2011-07-07 14:19:42 +02:00 committed by Philipp Reisner
parent 3ab706fe52
commit 0500813fe0
8 changed files with 160 additions and 161 deletions
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15
drivers/block/drbd/drbd_int.h
View File

@ -518,7 +518,7 @@ struct drbd_backing_dev {
struct block_device *backing_bdev; struct block_device *backing_bdev;
struct block_device *md_bdev; struct block_device *md_bdev;
struct drbd_md md; struct drbd_md md;
struct disk_conf *disk_conf; /* RCU, for updates: first_peer_device(device)->connection->conf_update */ struct disk_conf *disk_conf; /* RCU, for updates: resource->conf_update */
sector_t known_size; /* last known size of that backing device */ sector_t known_size; /* last known size of that backing device */
}; };
@ -578,6 +578,8 @@ struct drbd_resource {
struct list_head connections; struct list_head connections;
struct list_head resources; struct list_head resources;
struct res_opts res_opts; struct res_opts res_opts;
struct mutex conf_update; /* mutex for ready-copy-update of net_conf and disk_conf */
spinlock_t req_lock;
}; };
struct drbd_connection { struct drbd_connection {
@ -594,7 +596,6 @@ struct drbd_connection {
unsigned long flags; unsigned long flags;
struct net_conf *net_conf; /* content protected by rcu */ struct net_conf *net_conf; /* content protected by rcu */
struct mutex conf_update; /* mutex for ready-copy-update of net_conf and disk_conf */
wait_queue_head_t ping_wait; /* Woken upon reception of a ping, and a state change */ wait_queue_head_t ping_wait; /* Woken upon reception of a ping, and a state change */
struct sockaddr_storage my_addr; struct sockaddr_storage my_addr;
@ -608,8 +609,6 @@ struct drbd_connection {
unsigned long last_received; /* in jiffies, either socket */ unsigned long last_received; /* in jiffies, either socket */
unsigned int ko_count; unsigned int ko_count;
spinlock_t req_lock;
struct list_head transfer_log; /* all requests not yet fully processed */ struct list_head transfer_log; /* all requests not yet fully processed */
struct crypto_hash *cram_hmac_tfm; struct crypto_hash *cram_hmac_tfm;
@ -1595,9 +1594,9 @@ static inline void drbd_chk_io_error_(struct drbd_device *device,
{ {
if (error) { if (error) {
unsigned long flags; unsigned long flags;
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
__drbd_chk_io_error_(device, forcedetach, where); __drbd_chk_io_error_(device, forcedetach, where);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
} }
} }
@ -2069,11 +2068,11 @@ static inline bool inc_ap_bio_cond(struct drbd_device *device)
{ {
bool rv = false; bool rv = false;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
rv = may_inc_ap_bio(device); rv = may_inc_ap_bio(device);
if (rv) if (rv)
atomic_inc(&device->ap_bio_cnt); atomic_inc(&device->ap_bio_cnt);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
return rv; return rv;
} }

36
drivers/block/drbd/drbd_main.c
View File

@ -198,7 +198,7 @@ void tl_release(struct drbd_connection *connection, unsigned int barrier_nr,
int expect_epoch = 0; int expect_epoch = 0;
int expect_size = 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, /* find oldest not yet barrier-acked write request,
* count writes in its epoch. */ * count writes in its epoch. */
@ -255,12 +255,12 @@ void tl_release(struct drbd_connection *connection, unsigned int barrier_nr,
break; break;
_req_mod(req, BARRIER_ACKED); _req_mod(req, BARRIER_ACKED);
} }
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
return; return;
bail: 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); conn_request_state(connection, NS(conn, C_PROTOCOL_ERROR), CS_HARD);
} }
@ -284,9 +284,9 @@ void _tl_restart(struct drbd_connection *connection, enum drbd_req_event what)
void tl_restart(struct drbd_connection *connection, enum drbd_req_event what) 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); _tl_restart(connection, what);
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
} }
/** /**
@ -311,7 +311,7 @@ void tl_abort_disk_io(struct drbd_device *device)
struct drbd_connection *connection = first_peer_device(device)->connection; struct drbd_connection *connection = first_peer_device(device)->connection;
struct drbd_request *req, *r; 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) { list_for_each_entry_safe(req, r, &connection->transfer_log, tl_requests) {
if (!(req->rq_state & RQ_LOCAL_PENDING)) if (!(req->rq_state & RQ_LOCAL_PENDING))
continue; continue;
@ -319,7 +319,7 @@ void tl_abort_disk_io(struct drbd_device *device)
continue; continue;
_req_mod(req, ABORT_DISK_IO); _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) static int drbd_thread_setup(void *arg)
@ -1836,7 +1836,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
int rv = 0; int rv = 0;
mutex_lock(&drbd_main_mutex); mutex_lock(&drbd_main_mutex);
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
/* to have a stable device->state.role /* to have a stable device->state.role
* and no race with updating open_cnt */ * and no race with updating open_cnt */
@ -1849,7 +1849,7 @@ static int drbd_open(struct block_device *bdev, fmode_t mode)
if (!rv) if (!rv)
device->open_cnt++; device->open_cnt++;
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
mutex_unlock(&drbd_main_mutex); mutex_unlock(&drbd_main_mutex);
return rv; return rv;
@ -2546,6 +2546,8 @@ struct drbd_resource *drbd_create_resource(const char *name)
idr_init(&resource->devices); idr_init(&resource->devices);
INIT_LIST_HEAD(&resource->connections); INIT_LIST_HEAD(&resource->connections);
list_add_tail_rcu(&resource->resources, &drbd_resources); list_add_tail_rcu(&resource->resources, &drbd_resources);
mutex_init(&resource->conf_update);
spin_lock_init(&resource->req_lock);
return resource; return resource;
} }
@ -2588,8 +2590,6 @@ struct drbd_connection *conn_create(const char *name, struct res_opts *res_opts)
connection->cstate = C_STANDALONE; connection->cstate = C_STANDALONE;
mutex_init(&connection->cstate_mutex); mutex_init(&connection->cstate_mutex);
spin_lock_init(&connection->req_lock);
mutex_init(&connection->conf_update);
init_waitqueue_head(&connection->ping_wait); init_waitqueue_head(&connection->ping_wait);
idr_init(&connection->peer_devices); idr_init(&connection->peer_devices);
@ -2720,7 +2720,7 @@ enum drbd_ret_code drbd_create_device(struct drbd_resource *resource, unsigned i
blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8); blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8);
blk_queue_bounce_limit(q, BLK_BOUNCE_ANY); blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
blk_queue_merge_bvec(q, drbd_merge_bvec); blk_queue_merge_bvec(q, drbd_merge_bvec);
q->queue_lock = &connection->req_lock; q->queue_lock = &resource->req_lock;
device->md_io_page = alloc_page(GFP_KERNEL); device->md_io_page = alloc_page(GFP_KERNEL);
if (!device->md_io_page) if (!device->md_io_page)
@ -3281,14 +3281,14 @@ int drbd_md_read(struct drbd_device *device, struct drbd_backing_dev *bdev)
rv = NO_ERROR; rv = NO_ERROR;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (device->state.conn < C_CONNECTED) { if (device->state.conn < C_CONNECTED) {
unsigned int peer; unsigned int peer;
peer = be32_to_cpu(buffer->la_peer_max_bio_size); peer = be32_to_cpu(buffer->la_peer_max_bio_size);
peer = max(peer, DRBD_MAX_BIO_SIZE_SAFE); peer = max(peer, DRBD_MAX_BIO_SIZE_SAFE);
device->peer_max_bio_size = peer; device->peer_max_bio_size = peer;
} }
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
err: err:
drbd_md_put_buffer(device); drbd_md_put_buffer(device);
@ -3577,13 +3577,13 @@ void drbd_queue_bitmap_io(struct drbd_device *device,
device->bm_io_work.why = why; device->bm_io_work.why = why;
device->bm_io_work.flags = flags; device->bm_io_work.flags = flags;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
set_bit(BITMAP_IO, &device->flags); set_bit(BITMAP_IO, &device->flags);
if (atomic_read(&device->ap_bio_cnt) == 0) { if (atomic_read(&device->ap_bio_cnt) == 0) {
if (!test_and_set_bit(BITMAP_IO_QUEUED, &device->flags)) if (!test_and_set_bit(BITMAP_IO_QUEUED, &device->flags))
drbd_queue_work(&first_peer_device(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(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
} }
/** /**
@ -3751,10 +3751,10 @@ int drbd_wait_misc(struct drbd_device *device, struct drbd_interval *i)
/* Indicate to wake up device->misc_wait on progress. */ /* Indicate to wake up device->misc_wait on progress. */
i->waiting = true; i->waiting = true;
prepare_to_wait(&device->misc_wait, &wait, TASK_INTERRUPTIBLE); prepare_to_wait(&device->misc_wait, &wait, TASK_INTERRUPTIBLE);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
timeout = schedule_timeout(timeout); timeout = schedule_timeout(timeout);
finish_wait(&device->misc_wait, &wait); finish_wait(&device->misc_wait, &wait);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (!timeout || device->state.conn < C_CONNECTED) if (!timeout || device->state.conn < C_CONNECTED)
return -ETIMEDOUT; return -ETIMEDOUT;
if (signal_pending(current)) if (signal_pending(current))

50
drivers/block/drbd/drbd_nl.c
View File

@ -443,9 +443,9 @@ bool conn_try_outdate_peer(struct drbd_connection *connection)
return false; return false;
} }
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
connect_cnt = connection->connect_cnt; connect_cnt = connection->connect_cnt;
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
fp = highest_fencing_policy(connection); fp = highest_fencing_policy(connection);
switch (fp) { switch (fp) {
@ -510,7 +510,7 @@ bool conn_try_outdate_peer(struct drbd_connection *connection)
conn_request_state(connection, mask, val, CS_VERBOSE); conn_request_state(connection, mask, val, CS_VERBOSE);
here, because we might were able to re-establish the connection in the here, because we might were able to re-establish the connection in the
meantime. */ meantime. */
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
if (connection->cstate < C_WF_REPORT_PARAMS && !test_bit(STATE_SENT, &connection->flags)) { if (connection->cstate < C_WF_REPORT_PARAMS && !test_bit(STATE_SENT, &connection->flags)) {
if (connection->connect_cnt != connect_cnt) if (connection->connect_cnt != connect_cnt)
/* In case the connection was established and droped /* In case the connection was established and droped
@ -519,7 +519,7 @@ bool conn_try_outdate_peer(struct drbd_connection *connection)
else else
_conn_request_state(connection, mask, val, CS_VERBOSE); _conn_request_state(connection, mask, val, CS_VERBOSE);
} }
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
return conn_highest_pdsk(connection) <= D_OUTDATED; return conn_highest_pdsk(connection) <= D_OUTDATED;
} }
@ -654,11 +654,11 @@ drbd_set_role(struct drbd_device *device, enum drbd_role new_role, int force)
put_ldev(device); put_ldev(device);
} }
} else { } else {
mutex_lock(&first_peer_device(device)->connection->conf_update); mutex_lock(&device->resource->conf_update);
nc = first_peer_device(device)->connection->net_conf; nc = first_peer_device(device)->connection->net_conf;
if (nc) if (nc)
nc->discard_my_data = 0; /* without copy; single bit op is atomic */ nc->discard_my_data = 0; /* without copy; single bit op is atomic */
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&device->resource->conf_update);
set_disk_ro(device->vdisk, false); set_disk_ro(device->vdisk, false);
if (get_ldev(device)) { if (get_ldev(device)) {
@ -1188,10 +1188,10 @@ static void conn_reconfig_start(struct drbd_connection *connection)
static void conn_reconfig_done(struct drbd_connection *connection) static void conn_reconfig_done(struct drbd_connection *connection)
{ {
bool stop_threads; bool stop_threads;
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
stop_threads = conn_all_vols_unconf(connection) && stop_threads = conn_all_vols_unconf(connection) &&
connection->cstate == C_STANDALONE; connection->cstate == C_STANDALONE;
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
if (stop_threads) { if (stop_threads) {
/* asender is implicitly stopped by receiver /* asender is implicitly stopped by receiver
* in conn_disconnect() */ * in conn_disconnect() */
@ -1211,10 +1211,10 @@ static void drbd_suspend_al(struct drbd_device *device)
} }
drbd_al_shrink(device); drbd_al_shrink(device);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (device->state.conn < C_CONNECTED) if (device->state.conn < C_CONNECTED)
s = !test_and_set_bit(AL_SUSPENDED, &device->flags); s = !test_and_set_bit(AL_SUSPENDED, &device->flags);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
lc_unlock(device->act_log); lc_unlock(device->act_log);
if (s) if (s)
@ -1285,7 +1285,7 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
goto fail; goto fail;
} }
mutex_lock(&first_peer_device(device)->connection->conf_update); mutex_lock(&device->resource->conf_update);
old_disk_conf = device->ldev->disk_conf; old_disk_conf = device->ldev->disk_conf;
*new_disk_conf = *old_disk_conf; *new_disk_conf = *old_disk_conf;
if (should_set_defaults(info)) if (should_set_defaults(info))
@ -1348,7 +1348,7 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
rcu_assign_pointer(device->rs_plan_s, new_plan); rcu_assign_pointer(device->rs_plan_s, new_plan);
} }
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&device->resource->conf_update);
if (new_disk_conf->al_updates) if (new_disk_conf->al_updates)
device->ldev->md.flags &= ~MDF_AL_DISABLED; device->ldev->md.flags &= ~MDF_AL_DISABLED;
@ -1374,7 +1374,7 @@ int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info)
goto success; goto success;
fail_unlock: fail_unlock:
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&device->resource->conf_update);
fail: fail:
kfree(new_disk_conf); kfree(new_disk_conf);
kfree(new_plan); kfree(new_plan);
@ -1724,7 +1724,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
if (_drbd_bm_total_weight(device) == drbd_bm_bits(device)) if (_drbd_bm_total_weight(device) == drbd_bm_bits(device))
drbd_suspend_al(device); /* IO is still suspended here... */ drbd_suspend_al(device); /* IO is still suspended here... */
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
os = drbd_read_state(device); os = drbd_read_state(device);
ns = os; ns = os;
/* If MDF_CONSISTENT is not set go into inconsistent state, /* If MDF_CONSISTENT is not set go into inconsistent state,
@ -1776,7 +1776,7 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
} }
rv = _drbd_set_state(device, ns, CS_VERBOSE, NULL); rv = _drbd_set_state(device, ns, CS_VERBOSE, NULL);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (rv < SS_SUCCESS) if (rv < SS_SUCCESS)
goto force_diskless_dec; goto force_diskless_dec;
@ -2077,7 +2077,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
conn_reconfig_start(connection); conn_reconfig_start(connection);
mutex_lock(&connection->data.mutex); mutex_lock(&connection->data.mutex);
mutex_lock(&connection->conf_update); mutex_lock(&connection->resource->conf_update);
old_net_conf = connection->net_conf; old_net_conf = connection->net_conf;
if (!old_net_conf) { if (!old_net_conf) {
@ -2141,7 +2141,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
crypto_free_hash(connection->cram_hmac_tfm); crypto_free_hash(connection->cram_hmac_tfm);
connection->cram_hmac_tfm = crypto.cram_hmac_tfm; connection->cram_hmac_tfm = crypto.cram_hmac_tfm;
mutex_unlock(&connection->conf_update); mutex_unlock(&connection->resource->conf_update);
mutex_unlock(&connection->data.mutex); mutex_unlock(&connection->data.mutex);
synchronize_rcu(); synchronize_rcu();
kfree(old_net_conf); kfree(old_net_conf);
@ -2152,7 +2152,7 @@ int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info)
goto done; goto done;
fail: fail:
mutex_unlock(&connection->conf_update); mutex_unlock(&connection->resource->conf_update);
mutex_unlock(&connection->data.mutex); mutex_unlock(&connection->data.mutex);
free_crypto(&crypto); free_crypto(&crypto);
kfree(new_net_conf); kfree(new_net_conf);
@ -2243,11 +2243,11 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
conn_flush_workqueue(connection); conn_flush_workqueue(connection);
mutex_lock(&connection->conf_update); mutex_lock(&adm_ctx.resource->conf_update);
old_net_conf = connection->net_conf; old_net_conf = connection->net_conf;
if (old_net_conf) { if (old_net_conf) {
retcode = ERR_NET_CONFIGURED; retcode = ERR_NET_CONFIGURED;
mutex_unlock(&connection->conf_update); mutex_unlock(&adm_ctx.resource->conf_update);
goto fail; goto fail;
} }
rcu_assign_pointer(connection->net_conf, new_net_conf); rcu_assign_pointer(connection->net_conf, new_net_conf);
@ -2263,7 +2263,7 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
connection->peer_addr_len = nla_len(adm_ctx.peer_addr); connection->peer_addr_len = nla_len(adm_ctx.peer_addr);
memcpy(&connection->peer_addr, nla_data(adm_ctx.peer_addr), connection->peer_addr_len); memcpy(&connection->peer_addr, nla_data(adm_ctx.peer_addr), connection->peer_addr_len);
mutex_unlock(&connection->conf_update); mutex_unlock(&adm_ctx.resource->conf_update);
rcu_read_lock(); rcu_read_lock();
idr_for_each_entry(&connection->peer_devices, peer_device, i) { idr_for_each_entry(&connection->peer_devices, peer_device, i) {
@ -2486,12 +2486,12 @@ int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info)
device->ldev->known_size = drbd_get_capacity(device->ldev->backing_bdev); device->ldev->known_size = drbd_get_capacity(device->ldev->backing_bdev);
if (new_disk_conf) { if (new_disk_conf) {
mutex_lock(&first_peer_device(device)->connection->conf_update); mutex_lock(&device->resource->conf_update);
old_disk_conf = device->ldev->disk_conf; old_disk_conf = device->ldev->disk_conf;
*new_disk_conf = *old_disk_conf; *new_disk_conf = *old_disk_conf;
new_disk_conf->disk_size = (sector_t)rs.resize_size; new_disk_conf->disk_size = (sector_t)rs.resize_size;
rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf); rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf);
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&device->resource->conf_update);
synchronize_rcu(); synchronize_rcu();
kfree(old_disk_conf); kfree(old_disk_conf);
} }
@ -3248,10 +3248,10 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info)
drbd_send_uuids_skip_initial_sync(device); drbd_send_uuids_skip_initial_sync(device);
_drbd_uuid_set(device, UI_BITMAP, 0); _drbd_uuid_set(device, UI_BITMAP, 0);
drbd_print_uuids(device, "cleared bitmap UUID"); drbd_print_uuids(device, "cleared bitmap UUID");
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
_drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, D_UP_TO_DATE), _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, D_UP_TO_DATE),
CS_VERBOSE, NULL); CS_VERBOSE, NULL);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
} }
} }

116
drivers/block/drbd/drbd_receiver.c
View File

@ -221,9 +221,9 @@ static void drbd_kick_lo_and_reclaim_net(struct drbd_device *device)
LIST_HEAD(reclaimed); LIST_HEAD(reclaimed);
struct drbd_peer_request *peer_req, *t; struct drbd_peer_request *peer_req, *t;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
reclaim_finished_net_peer_reqs(device, &reclaimed); reclaim_finished_net_peer_reqs(device, &reclaimed);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
list_for_each_entry_safe(peer_req, t, &reclaimed, w.list) list_for_each_entry_safe(peer_req, t, &reclaimed, w.list)
drbd_free_net_peer_req(device, peer_req); drbd_free_net_peer_req(device, peer_req);
@ -288,7 +288,7 @@ struct page *drbd_alloc_pages(struct drbd_device *device, unsigned int number,
} }
/* Must not be used from irq, as that may deadlock: see drbd_alloc_pages. /* Must not be used from irq, as that may deadlock: see drbd_alloc_pages.
* Is also used from inside an other spin_lock_irq(&first_peer_device(device)->connection->req_lock); * Is also used from inside an other spin_lock_irq(&resource->req_lock);
* Either links the page chain back to the global pool, * Either links the page chain back to the global pool,
* or returns all pages to the system. */ * or returns all pages to the system. */
static void drbd_free_pages(struct drbd_device *device, struct page *page, int is_net) static void drbd_free_pages(struct drbd_device *device, struct page *page, int is_net)
@ -396,9 +396,9 @@ int drbd_free_peer_reqs(struct drbd_device *device, struct list_head *list)
int count = 0; int count = 0;
int is_net = list == &device->net_ee; int is_net = list == &device->net_ee;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_splice_init(list, &work_list); list_splice_init(list, &work_list);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
list_for_each_entry_safe(peer_req, t, &work_list, w.list) { list_for_each_entry_safe(peer_req, t, &work_list, w.list) {
__drbd_free_peer_req(device, peer_req, is_net); __drbd_free_peer_req(device, peer_req, is_net);
@ -417,10 +417,10 @@ static int drbd_finish_peer_reqs(struct drbd_device *device)
struct drbd_peer_request *peer_req, *t; struct drbd_peer_request *peer_req, *t;
int err = 0; int err = 0;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
reclaim_finished_net_peer_reqs(device, &reclaimed); reclaim_finished_net_peer_reqs(device, &reclaimed);
list_splice_init(&device->done_ee, &work_list); list_splice_init(&device->done_ee, &work_list);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
list_for_each_entry_safe(peer_req, t, &reclaimed, w.list) list_for_each_entry_safe(peer_req, t, &reclaimed, w.list)
drbd_free_net_peer_req(device, peer_req); drbd_free_net_peer_req(device, peer_req);
@ -452,19 +452,19 @@ static void _drbd_wait_ee_list_empty(struct drbd_device *device,
* and calling prepare_to_wait in the fast path */ * and calling prepare_to_wait in the fast path */
while (!list_empty(head)) { while (!list_empty(head)) {
prepare_to_wait(&device->ee_wait, &wait, TASK_UNINTERRUPTIBLE); prepare_to_wait(&device->ee_wait, &wait, TASK_UNINTERRUPTIBLE);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
io_schedule(); io_schedule();
finish_wait(&device->ee_wait, &wait); finish_wait(&device->ee_wait, &wait);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
} }
} }
static void drbd_wait_ee_list_empty(struct drbd_device *device, static void drbd_wait_ee_list_empty(struct drbd_device *device,
struct list_head *head) struct list_head *head)
{ {
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
_drbd_wait_ee_list_empty(device, head); _drbd_wait_ee_list_empty(device, head);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
} }
static int drbd_recv_short(struct socket *sock, void *buf, size_t size, int flags) static int drbd_recv_short(struct socket *sock, void *buf, size_t size, int flags)
@ -1072,13 +1072,13 @@ randomize:
drbd_thread_start(&connection->asender); drbd_thread_start(&connection->asender);
mutex_lock(&connection->conf_update); mutex_lock(&connection->resource->conf_update);
/* The discard_my_data flag is a single-shot modifier to the next /* The discard_my_data flag is a single-shot modifier to the next
* connection attempt, the handshake of which is now well underway. * connection attempt, the handshake of which is now well underway.
* No need for rcu style copying of the whole struct * No need for rcu style copying of the whole struct
* just to clear a single value. */ * just to clear a single value. */
connection->net_conf->discard_my_data = 0; connection->net_conf->discard_my_data = 0;
mutex_unlock(&connection->conf_update); mutex_unlock(&connection->resource->conf_update);
return h; return h;
@ -1692,9 +1692,9 @@ static int recv_resync_read(struct drbd_device *device, sector_t sector, int dat
peer_req->w.cb = e_end_resync_block; peer_req->w.cb = e_end_resync_block;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_add(&peer_req->w.list, &device->sync_ee); list_add(&peer_req->w.list, &device->sync_ee);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
atomic_add(data_size >> 9, &device->rs_sect_ev); atomic_add(data_size >> 9, &device->rs_sect_ev);
if (drbd_submit_peer_request(device, peer_req, WRITE, DRBD_FAULT_RS_WR) == 0) if (drbd_submit_peer_request(device, peer_req, WRITE, DRBD_FAULT_RS_WR) == 0)
@ -1702,9 +1702,9 @@ static int recv_resync_read(struct drbd_device *device, sector_t sector, int dat
/* don't care for the reason here */ /* don't care for the reason here */
drbd_err(device, "submit failed, triggering re-connect\n"); drbd_err(device, "submit failed, triggering re-connect\n");
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_del(&peer_req->w.list); list_del(&peer_req->w.list);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
drbd_free_peer_req(device, peer_req); drbd_free_peer_req(device, peer_req);
fail: fail:
@ -1743,9 +1743,9 @@ static int receive_DataReply(struct drbd_connection *connection, struct packet_i
sector = be64_to_cpu(p->sector); sector = be64_to_cpu(p->sector);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
req = find_request(device, &device->read_requests, p->block_id, sector, false, __func__); req = find_request(device, &device->read_requests, p->block_id, sector, false, __func__);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (unlikely(!req)) if (unlikely(!req))
return -EIO; return -EIO;
@ -1844,12 +1844,12 @@ static int e_end_block(struct drbd_work *w, int cancel)
/* we delete from the conflict detection hash _after_ we sent out the /* we delete from the conflict detection hash _after_ we sent out the
* P_WRITE_ACK / P_NEG_ACK, to get the sequence number right. */ * P_WRITE_ACK / P_NEG_ACK, to get the sequence number right. */
if (peer_req->flags & EE_IN_INTERVAL_TREE) { if (peer_req->flags & EE_IN_INTERVAL_TREE) {
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
D_ASSERT(device, !drbd_interval_empty(&peer_req->i)); D_ASSERT(device, !drbd_interval_empty(&peer_req->i));
drbd_remove_epoch_entry_interval(device, peer_req); drbd_remove_epoch_entry_interval(device, peer_req);
if (peer_req->flags & EE_RESTART_REQUESTS) if (peer_req->flags & EE_RESTART_REQUESTS)
restart_conflicting_writes(device, sector, peer_req->i.size); restart_conflicting_writes(device, sector, peer_req->i.size);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
} else } else
D_ASSERT(device, drbd_interval_empty(&peer_req->i)); D_ASSERT(device, drbd_interval_empty(&peer_req->i));
@ -1925,7 +1925,7 @@ static bool overlapping_resync_write(struct drbd_device *device, struct drbd_pee
struct drbd_peer_request *rs_req; struct drbd_peer_request *rs_req;
bool rv = 0; bool rv = 0;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_for_each_entry(rs_req, &device->sync_ee, w.list) { list_for_each_entry(rs_req, &device->sync_ee, w.list) {
if (overlaps(peer_req->i.sector, peer_req->i.size, if (overlaps(peer_req->i.sector, peer_req->i.size,
rs_req->i.sector, rs_req->i.size)) { rs_req->i.sector, rs_req->i.size)) {
@ -1933,7 +1933,7 @@ static bool overlapping_resync_write(struct drbd_device *device, struct drbd_pee
break; break;
} }
} }
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
return rv; return rv;
} }
@ -2034,10 +2034,10 @@ static void fail_postponed_requests(struct drbd_device *device, sector_t sector,
continue; continue;
req->rq_state &= ~RQ_POSTPONED; req->rq_state &= ~RQ_POSTPONED;
__req_mod(req, NEG_ACKED, &m); __req_mod(req, NEG_ACKED, &m);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (m.bio) if (m.bio)
complete_master_bio(device, &m); complete_master_bio(device, &m);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
goto repeat; goto repeat;
} }
} }
@ -2218,10 +2218,10 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
err = wait_for_and_update_peer_seq(device, peer_seq); err = wait_for_and_update_peer_seq(device, peer_seq);
if (err) if (err)
goto out_interrupted; goto out_interrupted;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
err = handle_write_conflicts(device, peer_req); err = handle_write_conflicts(device, peer_req);
if (err) { if (err) {
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (err == -ENOENT) { if (err == -ENOENT) {
put_ldev(device); put_ldev(device);
return 0; return 0;
@ -2230,10 +2230,10 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
} }
} else { } else {
update_peer_seq(device, peer_seq); update_peer_seq(device, peer_seq);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
} }
list_add(&peer_req->w.list, &device->active_ee); list_add(&peer_req->w.list, &device->active_ee);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (device->state.conn == C_SYNC_TARGET) if (device->state.conn == C_SYNC_TARGET)
wait_event(device->ee_wait, !overlapping_resync_write(device, peer_req)); wait_event(device->ee_wait, !overlapping_resync_write(device, peer_req));
@ -2278,10 +2278,10 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
/* don't care for the reason here */ /* don't care for the reason here */
drbd_err(device, "submit failed, triggering re-connect\n"); drbd_err(device, "submit failed, triggering re-connect\n");
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_del(&peer_req->w.list); list_del(&peer_req->w.list);
drbd_remove_epoch_entry_interval(device, peer_req); drbd_remove_epoch_entry_interval(device, peer_req);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (peer_req->flags & EE_CALL_AL_COMPLETE_IO) if (peer_req->flags & EE_CALL_AL_COMPLETE_IO)
drbd_al_complete_io(device, &peer_req->i); drbd_al_complete_io(device, &peer_req->i);
@ -2532,18 +2532,18 @@ submit_for_resync:
submit: submit:
inc_unacked(device); inc_unacked(device);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_add_tail(&peer_req->w.list, &device->read_ee); list_add_tail(&peer_req->w.list, &device->read_ee);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (drbd_submit_peer_request(device, peer_req, READ, fault_type) == 0) if (drbd_submit_peer_request(device, peer_req, READ, fault_type) == 0)
return 0; return 0;
/* don't care for the reason here */ /* don't care for the reason here */
drbd_err(device, "submit failed, triggering re-connect\n"); drbd_err(device, "submit failed, triggering re-connect\n");
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_del(&peer_req->w.list); list_del(&peer_req->w.list);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
/* no drbd_rs_complete_io(), we are dropping the connection anyways */ /* no drbd_rs_complete_io(), we are dropping the connection anyways */
out_free_e: out_free_e:
@ -3221,7 +3221,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
} }
mutex_lock(&connection->data.mutex); mutex_lock(&connection->data.mutex);
mutex_lock(&connection->conf_update); mutex_lock(&connection->resource->conf_update);
old_net_conf = connection->net_conf; old_net_conf = connection->net_conf;
*new_net_conf = *old_net_conf; *new_net_conf = *old_net_conf;
@ -3232,7 +3232,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
new_net_conf->two_primaries = p_two_primaries; new_net_conf->two_primaries = p_two_primaries;
rcu_assign_pointer(connection->net_conf, new_net_conf); rcu_assign_pointer(connection->net_conf, new_net_conf);
mutex_unlock(&connection->conf_update); mutex_unlock(&connection->resource->conf_update);
mutex_unlock(&connection->data.mutex); mutex_unlock(&connection->data.mutex);
crypto_free_hash(connection->peer_integrity_tfm); crypto_free_hash(connection->peer_integrity_tfm);
@ -3372,13 +3372,13 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
if (err) if (err)
return err; return err;
mutex_lock(&first_peer_device(device)->connection->conf_update); mutex_lock(&connection->resource->conf_update);
old_net_conf = first_peer_device(device)->connection->net_conf; old_net_conf = first_peer_device(device)->connection->net_conf;
if (get_ldev(device)) { if (get_ldev(device)) {
new_disk_conf = kzalloc(sizeof(struct disk_conf), GFP_KERNEL); new_disk_conf = kzalloc(sizeof(struct disk_conf), GFP_KERNEL);
if (!new_disk_conf) { if (!new_disk_conf) {
put_ldev(device); put_ldev(device);
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&connection->resource->conf_update);
drbd_err(device, "Allocation of new disk_conf failed\n"); drbd_err(device, "Allocation of new disk_conf failed\n");
return -ENOMEM; return -ENOMEM;
} }
@ -3498,7 +3498,7 @@ static int receive_SyncParam(struct drbd_connection *connection, struct packet_i
rcu_assign_pointer(device->rs_plan_s, new_plan); rcu_assign_pointer(device->rs_plan_s, new_plan);
} }
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&connection->resource->conf_update);
synchronize_rcu(); synchronize_rcu();
if (new_net_conf) if (new_net_conf)
kfree(old_net_conf); kfree(old_net_conf);
@ -3512,7 +3512,7 @@ reconnect:
put_ldev(device); put_ldev(device);
kfree(new_disk_conf); kfree(new_disk_conf);
} }
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&connection->resource->conf_update);
return -EIO; return -EIO;
disconnect: disconnect:
@ -3521,7 +3521,7 @@ disconnect:
put_ldev(device); put_ldev(device);
kfree(new_disk_conf); kfree(new_disk_conf);
} }
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&connection->resource->conf_update);
/* just for completeness: actually not needed, /* just for completeness: actually not needed,
* as this is not reached if csums_tfm was ok. */ * as this is not reached if csums_tfm was ok. */
crypto_free_hash(csums_tfm); crypto_free_hash(csums_tfm);
@ -3601,13 +3601,13 @@ static int receive_sizes(struct drbd_connection *connection, struct packet_info
return -ENOMEM; return -ENOMEM;
} }
mutex_lock(&first_peer_device(device)->connection->conf_update); mutex_lock(&connection->resource->conf_update);
old_disk_conf = device->ldev->disk_conf; old_disk_conf = device->ldev->disk_conf;
*new_disk_conf = *old_disk_conf; *new_disk_conf = *old_disk_conf;
new_disk_conf->disk_size = p_usize; new_disk_conf->disk_size = p_usize;
rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf); rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf);
mutex_unlock(&first_peer_device(device)->connection->conf_update); mutex_unlock(&connection->resource->conf_update);
synchronize_rcu(); synchronize_rcu();
kfree(old_disk_conf); kfree(old_disk_conf);
@ -3846,10 +3846,10 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
drbd_info(device, "real peer disk state = %s\n", drbd_disk_str(real_peer_disk)); drbd_info(device, "real peer disk state = %s\n", drbd_disk_str(real_peer_disk));
} }
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
retry: retry:
os = ns = drbd_read_state(device); os = ns = drbd_read_state(device);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
/* If some other part of the code (asender thread, timeout) /* If some other part of the code (asender thread, timeout)
* already decided to close the connection again, * already decided to close the connection again,
@ -3952,7 +3952,7 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
} }
} }
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (os.i != drbd_read_state(device).i) if (os.i != drbd_read_state(device).i)
goto retry; goto retry;
clear_bit(CONSIDER_RESYNC, &device->flags); clear_bit(CONSIDER_RESYNC, &device->flags);
@ -3966,7 +3966,7 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
test_bit(NEW_CUR_UUID, &device->flags)) { test_bit(NEW_CUR_UUID, &device->flags)) {
/* Do not allow tl_restart(RESEND) for a rebooted peer. We can only allow this /* Do not allow tl_restart(RESEND) for a rebooted peer. We can only allow this
for temporal network outages! */ for temporal network outages! */
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
drbd_err(device, "Aborting Connect, can not thaw IO with an only Consistent peer\n"); drbd_err(device, "Aborting Connect, can not thaw IO with an only Consistent peer\n");
tl_clear(first_peer_device(device)->connection); tl_clear(first_peer_device(device)->connection);
drbd_uuid_new_current(device); drbd_uuid_new_current(device);
@ -3976,7 +3976,7 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
} }
rv = _drbd_set_state(device, ns, cs_flags, NULL); rv = _drbd_set_state(device, ns, cs_flags, NULL);
ns = drbd_read_state(device); ns = drbd_read_state(device);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (rv < SS_SUCCESS) { if (rv < SS_SUCCESS) {
conn_request_state(first_peer_device(device)->connection, NS(conn, C_DISCONNECTING), CS_HARD); conn_request_state(first_peer_device(device)->connection, NS(conn, C_DISCONNECTING), CS_HARD);
@ -4483,12 +4483,12 @@ static void conn_disconnect(struct drbd_connection *connection)
if (conn_highest_role(connection) == R_PRIMARY && conn_highest_pdsk(connection) >= D_UNKNOWN) if (conn_highest_role(connection) == R_PRIMARY && conn_highest_pdsk(connection) >= D_UNKNOWN)
conn_try_outdate_peer_async(connection); conn_try_outdate_peer_async(connection);
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
oc = connection->cstate; oc = connection->cstate;
if (oc >= C_UNCONNECTED) if (oc >= C_UNCONNECTED)
_conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE); _conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE);
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
if (oc == C_DISCONNECTING) if (oc == C_DISCONNECTING)
conn_request_state(connection, NS(conn, C_STANDALONE), CS_VERBOSE | CS_HARD); conn_request_state(connection, NS(conn, C_STANDALONE), CS_VERBOSE | CS_HARD);
@ -4499,11 +4499,11 @@ static int drbd_disconnected(struct drbd_device *device)
unsigned int i; unsigned int i;
/* wait for current activity to cease. */ /* wait for current activity to cease. */
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
_drbd_wait_ee_list_empty(device, &device->active_ee); _drbd_wait_ee_list_empty(device, &device->active_ee);
_drbd_wait_ee_list_empty(device, &device->sync_ee); _drbd_wait_ee_list_empty(device, &device->sync_ee);
_drbd_wait_ee_list_empty(device, &device->read_ee); _drbd_wait_ee_list_empty(device, &device->read_ee);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
/* We do not have data structures that would allow us to /* We do not have data structures that would allow us to
* get the rs_pending_cnt down to 0 again. * get the rs_pending_cnt down to 0 again.
@ -4970,14 +4970,14 @@ validate_req_change_req_state(struct drbd_device *device, u64 id, sector_t secto
struct drbd_request *req; struct drbd_request *req;
struct bio_and_error m; struct bio_and_error m;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
req = find_request(device, root, id, sector, missing_ok, func); req = find_request(device, root, id, sector, missing_ok, func);
if (unlikely(!req)) { if (unlikely(!req)) {
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
return -EIO; return -EIO;
} }
__req_mod(req, what, &m); __req_mod(req, what, &m);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (m.bio) if (m.bio)
complete_master_bio(device, &m); complete_master_bio(device, &m);
@ -5218,14 +5218,14 @@ static int connection_finish_peer_reqs(struct drbd_connection *connection)
} }
set_bit(SIGNAL_ASENDER, &connection->flags); set_bit(SIGNAL_ASENDER, &connection->flags);
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { idr_for_each_entry(&connection->peer_devices, peer_device, vnr) {
struct drbd_device *device = peer_device->device; struct drbd_device *device = peer_device->device;
not_empty = !list_empty(&device->done_ee); not_empty = !list_empty(&device->done_ee);
if (not_empty) if (not_empty)
break; break;
} }
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
rcu_read_unlock(); rcu_read_unlock();
} while (not_empty); } while (not_empty);

18
drivers/block/drbd/drbd_req.c
View File

@ -851,9 +851,9 @@ static void complete_conflicting_writes(struct drbd_request *req)
break; break;
/* Indicate to wake up device->misc_wait on progress. */ /* Indicate to wake up device->misc_wait on progress. */
i->waiting = true; i->waiting = true;
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
schedule(); schedule();
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
} }
finish_wait(&device->misc_wait, &wait); finish_wait(&device->misc_wait, &wait);
} }
@ -1078,7 +1078,7 @@ static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request
struct bio_and_error m = { NULL, }; struct bio_and_error m = { NULL, };
bool no_remote = false; bool no_remote = false;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (rw == WRITE) { if (rw == WRITE) {
/* This may temporarily give up the req_lock, /* This may temporarily give up the req_lock,
* but will re-aquire it before it returns here. * but will re-aquire it before it returns here.
@ -1140,9 +1140,9 @@ static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request
/* needs to be marked within the same spinlock */ /* needs to be marked within the same spinlock */
_req_mod(req, TO_BE_SUBMITTED); _req_mod(req, TO_BE_SUBMITTED);
/* but we need to give up the spinlock to submit */ /* but we need to give up the spinlock to submit */
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
drbd_submit_req_private_bio(req); drbd_submit_req_private_bio(req);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
} else if (no_remote) { } else if (no_remote) {
nodata: nodata:
if (__ratelimit(&drbd_ratelimit_state)) if (__ratelimit(&drbd_ratelimit_state))
@ -1155,7 +1155,7 @@ nodata:
out: out:
if (drbd_req_put_completion_ref(req, &m, 1)) if (drbd_req_put_completion_ref(req, &m, 1))
kref_put(&req->kref, drbd_req_destroy); kref_put(&req->kref, drbd_req_destroy);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
if (m.bio) if (m.bio)
complete_master_bio(device, &m); complete_master_bio(device, &m);
@ -1360,10 +1360,10 @@ void request_timer_fn(unsigned long data)
now = jiffies; now = jiffies;
spin_lock_irq(&connection->req_lock); spin_lock_irq(&device->resource->req_lock);
req = find_oldest_request(connection); req = find_oldest_request(connection);
if (!req) { if (!req) {
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
mod_timer(&device->request_timer, now + et); mod_timer(&device->request_timer, now + et);
return; return;
} }
@ -1397,6 +1397,6 @@ void request_timer_fn(unsigned long data)
__drbd_chk_io_error(device, DRBD_FORCE_DETACH); __drbd_chk_io_error(device, DRBD_FORCE_DETACH);
} }
nt = (time_after(now, req->start_time + et) ? now : req->start_time) + et; nt = (time_after(now, req->start_time + et) ? now : req->start_time) + et;
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
mod_timer(&device->request_timer, nt); mod_timer(&device->request_timer, nt);
} }

4
drivers/block/drbd/drbd_req.h
View File

@ -318,9 +318,9 @@ static inline int req_mod(struct drbd_request *req,
struct bio_and_error m; struct bio_and_error m;
int rv; int rv;
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
rv = __req_mod(req, what, &m); rv = __req_mod(req, what, &m);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
if (m.bio) if (m.bio)
complete_master_bio(device, &m); complete_master_bio(device, &m);

48
drivers/block/drbd/drbd_state.c
View File

@ -250,10 +250,10 @@ drbd_change_state(struct drbd_device *device, enum chg_state_flags f,
union drbd_state ns; union drbd_state ns;
enum drbd_state_rv rv; enum drbd_state_rv rv;
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
ns = apply_mask_val(drbd_read_state(device), mask, val); ns = apply_mask_val(drbd_read_state(device), mask, val);
rv = _drbd_set_state(device, ns, f, NULL); rv = _drbd_set_state(device, ns, f, NULL);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
return rv; return rv;
} }
@ -284,7 +284,7 @@ _req_st_cond(struct drbd_device *device, union drbd_state mask,
if (test_and_clear_bit(CL_ST_CHG_FAIL, &device->flags)) if (test_and_clear_bit(CL_ST_CHG_FAIL, &device->flags))
return SS_CW_FAILED_BY_PEER; return SS_CW_FAILED_BY_PEER;
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
os = drbd_read_state(device); os = drbd_read_state(device);
ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL); ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL);
rv = is_valid_transition(os, ns); rv = is_valid_transition(os, ns);
@ -301,7 +301,7 @@ _req_st_cond(struct drbd_device *device, union drbd_state mask,
rv = SS_UNKNOWN_ERROR; /* cont waiting, otherwise fail. */ rv = SS_UNKNOWN_ERROR; /* cont waiting, otherwise fail. */
} }
} }
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
return rv; return rv;
} }
@ -330,12 +330,12 @@ drbd_req_state(struct drbd_device *device, union drbd_state mask,
if (f & CS_SERIALIZE) if (f & CS_SERIALIZE)
mutex_lock(device->state_mutex); mutex_lock(device->state_mutex);
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
os = drbd_read_state(device); os = drbd_read_state(device);
ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL); ns = sanitize_state(device, apply_mask_val(os, mask, val), NULL);
rv = is_valid_transition(os, ns); rv = is_valid_transition(os, ns);
if (rv < SS_SUCCESS) { if (rv < SS_SUCCESS) {
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
goto abort; goto abort;
} }
@ -343,7 +343,7 @@ drbd_req_state(struct drbd_device *device, union drbd_state mask,
rv = is_valid_state(device, ns); rv = is_valid_state(device, ns);
if (rv == SS_SUCCESS) if (rv == SS_SUCCESS)
rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection); rv = is_valid_soft_transition(os, ns, first_peer_device(device)->connection);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
if (rv < SS_SUCCESS) { if (rv < SS_SUCCESS) {
if (f & CS_VERBOSE) if (f & CS_VERBOSE)
@ -366,14 +366,14 @@ drbd_req_state(struct drbd_device *device, union drbd_state mask,
print_st_err(device, os, ns, rv); print_st_err(device, os, ns, rv);
goto abort; goto abort;
} }
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
ns = apply_mask_val(drbd_read_state(device), mask, val); ns = apply_mask_val(drbd_read_state(device), mask, val);
rv = _drbd_set_state(device, ns, f, &done); rv = _drbd_set_state(device, ns, f, &done);
} else { } else {
rv = _drbd_set_state(device, ns, f, &done); rv = _drbd_set_state(device, ns, f, &done);
} }
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
if (f & CS_WAIT_COMPLETE && rv == SS_SUCCESS) { if (f & CS_WAIT_COMPLETE && rv == SS_SUCCESS) {
D_ASSERT(device, current != first_peer_device(device)->connection->worker.task); D_ASSERT(device, current != first_peer_device(device)->connection->worker.task);
@ -1245,7 +1245,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
struct drbd_connection *connection = first_peer_device(device)->connection; struct drbd_connection *connection = first_peer_device(device)->connection;
enum drbd_req_event what = NOTHING; enum drbd_req_event what = NOTHING;
spin_lock_irq(&connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (os.conn < C_CONNECTED && conn_lowest_conn(connection) >= C_CONNECTED) if (os.conn < C_CONNECTED && conn_lowest_conn(connection) >= C_CONNECTED)
what = RESEND; what = RESEND;
@ -1260,13 +1260,13 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
(union drbd_state) { { .susp_nod = 0 } }, (union drbd_state) { { .susp_nod = 0 } },
CS_VERBOSE); CS_VERBOSE);
} }
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
} }
if (ns.susp_fen) { if (ns.susp_fen) {
struct drbd_connection *connection = first_peer_device(device)->connection; struct drbd_connection *connection = first_peer_device(device)->connection;
spin_lock_irq(&connection->req_lock); spin_lock_irq(&device->resource->req_lock);
if (connection->susp_fen && conn_lowest_conn(connection) >= C_CONNECTED) { if (connection->susp_fen && conn_lowest_conn(connection) >= C_CONNECTED) {
/* case2: The connection was established again: */ /* case2: The connection was established again: */
struct drbd_peer_device *peer_device; struct drbd_peer_device *peer_device;
@ -1282,7 +1282,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
(union drbd_state) { { .susp_fen = 0 } }, (union drbd_state) { { .susp_fen = 0 } },
CS_VERBOSE); CS_VERBOSE);
} }
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
} }
/* Became sync source. With protocol >= 96, we still need to send out /* Became sync source. With protocol >= 96, we still need to send out
@ -1555,13 +1555,13 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
if (oc == C_DISCONNECTING && ns_max.conn == C_STANDALONE) { if (oc == C_DISCONNECTING && ns_max.conn == C_STANDALONE) {
struct net_conf *old_conf; struct net_conf *old_conf;
mutex_lock(&connection->conf_update); mutex_lock(&connection->resource->conf_update);
old_conf = connection->net_conf; old_conf = connection->net_conf;
connection->my_addr_len = 0; connection->my_addr_len = 0;
connection->peer_addr_len = 0; connection->peer_addr_len = 0;
rcu_assign_pointer(connection->net_conf, NULL); rcu_assign_pointer(connection->net_conf, NULL);
conn_free_crypto(connection); conn_free_crypto(connection);
mutex_unlock(&connection->conf_update); mutex_unlock(&connection->resource->conf_update);
synchronize_rcu(); synchronize_rcu();
kfree(old_conf); kfree(old_conf);
@ -1579,13 +1579,13 @@ static int w_after_conn_state_ch(struct drbd_work *w, int unused)
} }
} }
rcu_read_unlock(); rcu_read_unlock();
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
_tl_restart(connection, CONNECTION_LOST_WHILE_PENDING); _tl_restart(connection, CONNECTION_LOST_WHILE_PENDING);
_conn_request_state(connection, _conn_request_state(connection,
(union drbd_state) { { .susp_fen = 1 } }, (union drbd_state) { { .susp_fen = 1 } },
(union drbd_state) { { .susp_fen = 0 } }, (union drbd_state) { { .susp_fen = 0 } },
CS_VERBOSE); CS_VERBOSE);
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
} }
} }
kref_put(&connection->kref, drbd_destroy_connection); kref_put(&connection->kref, drbd_destroy_connection);
@ -1802,7 +1802,7 @@ _conn_request_state(struct drbd_connection *connection, union drbd_state mask, u
/* This will be a cluster-wide state change. /* This will be a cluster-wide state change.
* Need to give up the spinlock, grab the mutex, * Need to give up the spinlock, grab the mutex,
* then send the state change request, ... */ * then send the state change request, ... */
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
mutex_lock(&connection->cstate_mutex); mutex_lock(&connection->cstate_mutex);
have_mutex = true; have_mutex = true;
@ -1821,10 +1821,10 @@ _conn_request_state(struct drbd_connection *connection, union drbd_state mask, u
/* ... and re-aquire the spinlock. /* ... and re-aquire the spinlock.
* If _conn_rq_cond() returned >= SS_SUCCESS, we must call * If _conn_rq_cond() returned >= SS_SUCCESS, we must call
* conn_set_state() within the same spinlock. */ * conn_set_state() within the same spinlock. */
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
wait_event_lock_irq(connection->ping_wait, wait_event_lock_irq(connection->ping_wait,
(rv = _conn_rq_cond(connection, mask, val)), (rv = _conn_rq_cond(connection, mask, val)),
connection->req_lock); connection->resource->req_lock);
clear_bit(CONN_WD_ST_CHG_REQ, &connection->flags); clear_bit(CONN_WD_ST_CHG_REQ, &connection->flags);
if (rv < SS_SUCCESS) if (rv < SS_SUCCESS)
goto abort; goto abort;
@ -1853,10 +1853,10 @@ _conn_request_state(struct drbd_connection *connection, union drbd_state mask, u
if (have_mutex) { if (have_mutex) {
/* mutex_unlock() "... must not be used in interrupt context.", /* mutex_unlock() "... must not be used in interrupt context.",
* so give up the spinlock, then re-aquire it */ * so give up the spinlock, then re-aquire it */
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
abort_unlocked: abort_unlocked:
mutex_unlock(&connection->cstate_mutex); mutex_unlock(&connection->cstate_mutex);
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
} }
if (rv < SS_SUCCESS && flags & CS_VERBOSE) { if (rv < SS_SUCCESS && flags & CS_VERBOSE) {
drbd_err(connection, "State change failed: %s\n", drbd_set_st_err_str(rv)); drbd_err(connection, "State change failed: %s\n", drbd_set_st_err_str(rv));
@ -1872,9 +1872,9 @@ conn_request_state(struct drbd_connection *connection, union drbd_state mask, un
{ {
enum drbd_state_rv rv; enum drbd_state_rv rv;
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
rv = _conn_request_state(connection, mask, val, flags); rv = _conn_request_state(connection, mask, val, flags);
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
return rv; return rv;
} }

34
drivers/block/drbd/drbd_worker.c
View File

@ -102,14 +102,14 @@ static void drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __rele
unsigned long flags = 0; unsigned long flags = 0;
struct drbd_device *device = peer_req->w.device; struct drbd_device *device = peer_req->w.device;
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
device->read_cnt += peer_req->i.size >> 9; device->read_cnt += peer_req->i.size >> 9;
list_del(&peer_req->w.list); list_del(&peer_req->w.list);
if (list_empty(&device->read_ee)) if (list_empty(&device->read_ee))
wake_up(&device->ee_wait); wake_up(&device->ee_wait);
if (test_bit(__EE_WAS_ERROR, &peer_req->flags)) if (test_bit(__EE_WAS_ERROR, &peer_req->flags))
__drbd_chk_io_error(device, DRBD_READ_ERROR); __drbd_chk_io_error(device, DRBD_READ_ERROR);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
drbd_queue_work(&first_peer_device(device)->connection->sender_work, &peer_req->w); drbd_queue_work(&first_peer_device(device)->connection->sender_work, &peer_req->w);
put_ldev(device); put_ldev(device);
@ -134,7 +134,7 @@ static void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __rel
do_al_complete_io = peer_req->flags & EE_CALL_AL_COMPLETE_IO; do_al_complete_io = peer_req->flags & EE_CALL_AL_COMPLETE_IO;
block_id = peer_req->block_id; block_id = peer_req->block_id;
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
device->writ_cnt += peer_req->i.size >> 9; device->writ_cnt += peer_req->i.size >> 9;
list_move_tail(&peer_req->w.list, &device->done_ee); list_move_tail(&peer_req->w.list, &device->done_ee);
@ -150,7 +150,7 @@ static void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __rel
if (test_bit(__EE_WAS_ERROR, &peer_req->flags)) if (test_bit(__EE_WAS_ERROR, &peer_req->flags))
__drbd_chk_io_error(device, DRBD_WRITE_ERROR); __drbd_chk_io_error(device, DRBD_WRITE_ERROR);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
if (block_id == ID_SYNCER) if (block_id == ID_SYNCER)
drbd_rs_complete_io(device, i.sector); drbd_rs_complete_io(device, i.sector);
@ -273,9 +273,9 @@ void drbd_request_endio(struct bio *bio, int error)
req->private_bio = ERR_PTR(error); req->private_bio = ERR_PTR(error);
/* not req_mod(), we need irqsave here! */ /* not req_mod(), we need irqsave here! */
spin_lock_irqsave(&first_peer_device(device)->connection->req_lock, flags); spin_lock_irqsave(&device->resource->req_lock, flags);
__req_mod(req, what, &m); __req_mod(req, what, &m);
spin_unlock_irqrestore(&first_peer_device(device)->connection->req_lock, flags); spin_unlock_irqrestore(&device->resource->req_lock, flags);
put_ldev(device); put_ldev(device);
if (m.bio) if (m.bio)
@ -397,9 +397,9 @@ static int read_for_csum(struct drbd_device *device, sector_t sector, int size)
goto defer; goto defer;
peer_req->w.cb = w_e_send_csum; peer_req->w.cb = w_e_send_csum;
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_add(&peer_req->w.list, &device->read_ee); list_add(&peer_req->w.list, &device->read_ee);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
atomic_add(size >> 9, &device->rs_sect_ev); atomic_add(size >> 9, &device->rs_sect_ev);
if (drbd_submit_peer_request(device, peer_req, READ, DRBD_FAULT_RS_RD) == 0) if (drbd_submit_peer_request(device, peer_req, READ, DRBD_FAULT_RS_RD) == 0)
@ -409,9 +409,9 @@ static int read_for_csum(struct drbd_device *device, sector_t sector, int size)
* because bio_add_page failed (probably broken lower level driver), * because bio_add_page failed (probably broken lower level driver),
* retry may or may not help. * retry may or may not help.
* If it does not, you may need to force disconnect. */ * If it does not, you may need to force disconnect. */
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_del(&peer_req->w.list); list_del(&peer_req->w.list);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
drbd_free_peer_req(device, peer_req); drbd_free_peer_req(device, peer_req);
defer: defer:
@ -855,7 +855,7 @@ int drbd_resync_finished(struct drbd_device *device)
ping_peer(device); ping_peer(device);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
os = drbd_read_state(device); os = drbd_read_state(device);
verify_done = (os.conn == C_VERIFY_S || os.conn == C_VERIFY_T); verify_done = (os.conn == C_VERIFY_S || os.conn == C_VERIFY_T);
@ -944,7 +944,7 @@ int drbd_resync_finished(struct drbd_device *device)
_drbd_set_state(device, ns, CS_VERBOSE, NULL); _drbd_set_state(device, ns, CS_VERBOSE, NULL);
out_unlock: out_unlock:
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
put_ldev(device); put_ldev(device);
out: out:
device->rs_total = 0; device->rs_total = 0;
@ -971,9 +971,9 @@ static void move_to_net_ee_or_free(struct drbd_device *device, struct drbd_peer_
int i = (peer_req->i.size + PAGE_SIZE -1) >> PAGE_SHIFT; int i = (peer_req->i.size + PAGE_SIZE -1) >> PAGE_SHIFT;
atomic_add(i, &device->pp_in_use_by_net); atomic_add(i, &device->pp_in_use_by_net);
atomic_sub(i, &device->pp_in_use); atomic_sub(i, &device->pp_in_use);
spin_lock_irq(&first_peer_device(device)->connection->req_lock); spin_lock_irq(&device->resource->req_lock);
list_add_tail(&peer_req->w.list, &device->net_ee); list_add_tail(&peer_req->w.list, &device->net_ee);
spin_unlock_irq(&first_peer_device(device)->connection->req_lock); spin_unlock_irq(&device->resource->req_lock);
wake_up(&drbd_pp_wait); wake_up(&drbd_pp_wait);
} else } else
drbd_free_peer_req(device, peer_req); drbd_free_peer_req(device, peer_req);
@ -1847,7 +1847,7 @@ static void wait_for_work(struct drbd_connection *connection, struct list_head *
for (;;) { for (;;) {
int send_barrier; int send_barrier;
prepare_to_wait(&connection->sender_work.q_wait, &wait, TASK_INTERRUPTIBLE); prepare_to_wait(&connection->sender_work.q_wait, &wait, TASK_INTERRUPTIBLE);
spin_lock_irq(&connection->req_lock); spin_lock_irq(&connection->resource->req_lock);
spin_lock(&connection->sender_work.q_lock); /* FIXME get rid of this one? */ spin_lock(&connection->sender_work.q_lock); /* FIXME get rid of this one? */
/* dequeue single item only, /* dequeue single item only,
* we still use drbd_queue_work_front() in some places */ * we still use drbd_queue_work_front() in some places */
@ -1855,11 +1855,11 @@ static void wait_for_work(struct drbd_connection *connection, struct list_head *
list_move(connection->sender_work.q.next, work_list); list_move(connection->sender_work.q.next, work_list);
spin_unlock(&connection->sender_work.q_lock); /* FIXME get rid of this one? */ spin_unlock(&connection->sender_work.q_lock); /* FIXME get rid of this one? */
if (!list_empty(work_list) || signal_pending(current)) { if (!list_empty(work_list) || signal_pending(current)) {
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
break; break;
} }
send_barrier = need_to_send_barrier(connection); send_barrier = need_to_send_barrier(connection);
spin_unlock_irq(&connection->req_lock); spin_unlock_irq(&connection->resource->req_lock);
if (send_barrier) { if (send_barrier) {
drbd_send_barrier(connection); drbd_send_barrier(connection);
connection->send.current_epoch_nr++; connection->send.current_epoch_nr++;