Lines Matching +full:1 +full:- +full:cell
1 // SPDX-License-Identifier: GPL-2.0-or-later
18 * Insert a volume into a cell. If there's an existing volume record, that is
21 static struct afs_volume *afs_insert_volume_into_cell(struct afs_cell *cell, in afs_insert_volume_into_cell() argument
27 write_seqlock(&cell->volume_lock); in afs_insert_volume_into_cell()
29 pp = &cell->volumes.rb_node; in afs_insert_volume_into_cell()
33 if (p->vid < volume->vid) { in afs_insert_volume_into_cell()
34 pp = &(*pp)->rb_left; in afs_insert_volume_into_cell()
35 } else if (p->vid > volume->vid) { in afs_insert_volume_into_cell()
36 pp = &(*pp)->rb_right; in afs_insert_volume_into_cell()
43 set_bit(AFS_VOLUME_RM_TREE, &volume->flags); in afs_insert_volume_into_cell()
44 rb_replace_node_rcu(&p->cell_node, &volume->cell_node, &cell->volumes); in afs_insert_volume_into_cell()
48 rb_link_node_rcu(&volume->cell_node, parent, pp); in afs_insert_volume_into_cell()
49 rb_insert_color(&volume->cell_node, &cell->volumes); in afs_insert_volume_into_cell()
50 hlist_add_head_rcu(&volume->proc_link, &cell->proc_volumes); in afs_insert_volume_into_cell()
53 write_sequnlock(&cell->volume_lock); in afs_insert_volume_into_cell()
60 struct afs_cell *cell = volume->cell; in afs_remove_volume_from_cell() local
62 if (!hlist_unhashed(&volume->proc_link)) { in afs_remove_volume_from_cell()
63 trace_afs_volume(volume->debug_id, volume->vid, refcount_read(&volume->ref), in afs_remove_volume_from_cell()
65 write_seqlock(&cell->volume_lock); in afs_remove_volume_from_cell()
66 hlist_del_rcu(&volume->proc_link); in afs_remove_volume_from_cell()
67 if (!test_and_set_bit(AFS_VOLUME_RM_TREE, &volume->flags)) in afs_remove_volume_from_cell()
68 rb_erase(&volume->cell_node, &cell->volumes); in afs_remove_volume_from_cell()
69 write_sequnlock(&cell->volume_lock); in afs_remove_volume_from_cell()
82 int ret = -ENOMEM, i; in afs_alloc_volume()
88 volume->debug_id = atomic_inc_return(&afs_volume_debug_id); in afs_alloc_volume()
89 volume->vid = vldb->vid[params->type]; in afs_alloc_volume()
90 volume->update_at = ktime_get_real_seconds() + afs_volume_record_life; in afs_alloc_volume()
91 volume->cell = afs_get_cell(params->cell, afs_cell_trace_get_vol); in afs_alloc_volume()
92 volume->type = params->type; in afs_alloc_volume()
93 volume->type_force = params->force; in afs_alloc_volume()
94 volume->name_len = vldb->name_len; in afs_alloc_volume()
95 volume->creation_time = TIME64_MIN; in afs_alloc_volume()
96 volume->update_time = TIME64_MIN; in afs_alloc_volume()
98 refcount_set(&volume->ref, 1); in afs_alloc_volume()
99 INIT_HLIST_NODE(&volume->proc_link); in afs_alloc_volume()
100 INIT_WORK(&volume->destructor, afs_destroy_volume); in afs_alloc_volume()
101 rwlock_init(&volume->servers_lock); in afs_alloc_volume()
102 mutex_init(&volume->volsync_lock); in afs_alloc_volume()
103 mutex_init(&volume->cb_check_lock); in afs_alloc_volume()
104 rwlock_init(&volume->cb_v_break_lock); in afs_alloc_volume()
105 INIT_LIST_HEAD(&volume->open_mmaps); in afs_alloc_volume()
106 init_rwsem(&volume->open_mmaps_lock); in afs_alloc_volume()
107 memcpy(volume->name, vldb->name, vldb->name_len + 1); in afs_alloc_volume()
110 volume->vids[i] = vldb->vid[i]; in afs_alloc_volume()
112 slist = afs_alloc_server_list(volume, params->key, vldb); in afs_alloc_volume()
119 rcu_assign_pointer(volume->servers, slist); in afs_alloc_volume()
120 trace_afs_volume(volume->debug_id, volume->vid, 1, afs_volume_trace_alloc); in afs_alloc_volume()
124 afs_put_cell(volume->cell, afs_cell_trace_put_vol); in afs_alloc_volume()
143 volume = afs_insert_volume_into_cell(params->cell, candidate); in afs_lookup_volume()
154 static struct afs_vldb_entry *afs_vl_lookup_vldb(struct afs_cell *cell, in afs_vl_lookup_vldb() argument
159 struct afs_vldb_entry *vldb = ERR_PTR(-EDESTADDRREQ); in afs_vl_lookup_vldb()
163 if (!afs_begin_vlserver_operation(&vc, cell, key)) in afs_vl_lookup_vldb()
164 return ERR_PTR(-ERESTARTSYS); in afs_vl_lookup_vldb()
179 * "%[cell:]volume[.]" R/W volume
180 * "#[cell:]volume[.]" R/O or R/W volume (rwparent=0),
181 * or R/W (rwparent=1) volume
182 * "%[cell:]volume.readonly" R/O volume
183 * "#[cell:]volume.readonly" R/O volume
184 * "%[cell:]volume.backup" Backup volume
185 * "#[cell:]volume.backup" Backup volume
187 * The cell name is optional, and defaults to the current cell.
191 * - Rule 1: Explicit type suffix forces access of that type or nothing
193 * - Rule 2: If parent volume is R/O, then mount R/O volume by preference, R/W
195 * - Rule 3: If parent volume is R/W, then only mount R/W volume unless
202 unsigned long type_mask = 1UL << params->type; in afs_create_volume()
204 vldb = afs_vl_lookup_vldb(params->cell, params->key, in afs_create_volume()
205 params->volname, params->volnamesz); in afs_create_volume()
209 if (test_bit(AFS_VLDB_QUERY_ERROR, &vldb->flags)) { in afs_create_volume()
210 volume = ERR_PTR(vldb->error); in afs_create_volume()
215 volume = ERR_PTR(-ENOMEDIUM); in afs_create_volume()
216 if (params->force) { in afs_create_volume()
217 if (!(vldb->flags & type_mask)) in afs_create_volume()
219 } else if (test_bit(AFS_VLDB_HAS_RO, &vldb->flags)) { in afs_create_volume()
220 params->type = AFSVL_ROVOL; in afs_create_volume()
221 } else if (test_bit(AFS_VLDB_HAS_RW, &vldb->flags)) { in afs_create_volume()
222 params->type = AFSVL_RWVOL; in afs_create_volume()
240 struct afs_server_list *slist = rcu_access_pointer(volume->servers); in afs_destroy_volume()
245 ASSERTCMP(volume->cache, ==, NULL); in afs_destroy_volume()
250 afs_put_serverlist(volume->cell->net, slist); in afs_destroy_volume()
251 afs_put_cell(volume->cell, afs_cell_trace_put_vol); in afs_destroy_volume()
252 trace_afs_volume(volume->debug_id, volume->vid, refcount_read(&volume->ref), in afs_destroy_volume()
266 if (__refcount_inc_not_zero(&volume->ref, &r)) { in afs_try_get_volume()
267 trace_afs_volume(volume->debug_id, volume->vid, r + 1, reason); in afs_try_get_volume()
282 __refcount_inc(&volume->ref, &r); in afs_get_volume()
283 trace_afs_volume(volume->debug_id, volume->vid, r + 1, reason); in afs_get_volume()
295 unsigned int debug_id = volume->debug_id; in afs_put_volume()
296 afs_volid_t vid = volume->vid; in afs_put_volume()
300 zero = __refcount_dec_and_test(&volume->ref, &r); in afs_put_volume()
301 trace_afs_volume(debug_id, vid, r - 1, reason); in afs_put_volume()
303 schedule_work(&volume->destructor); in afs_put_volume()
317 volume->cell->name, volume->vid); in afs_activate_volume()
319 return -ENOMEM; in afs_activate_volume()
323 if (vcookie != ERR_PTR(-EBUSY)) { in afs_activate_volume()
330 volume->cache = vcookie; in afs_activate_volume()
341 _enter("%s", volume->name); in afs_deactivate_volume()
344 fscache_relinquish_volume(volume->cache, NULL, in afs_deactivate_volume()
345 test_bit(AFS_VOLUME_DELETED, &volume->flags)); in afs_deactivate_volume()
346 volume->cache = NULL; in afs_deactivate_volume()
367 idsz = snprintf(idbuf, sizeof(idbuf), "%llu", volume->vid); in afs_update_volume_status()
369 vldb = afs_vl_lookup_vldb(volume->cell, key, idbuf, idsz); in afs_update_volume_status()
376 if (vldb->name_len != volume->name_len || in afs_update_volume_status()
377 memcmp(vldb->name, volume->name, vldb->name_len) != 0) { in afs_update_volume_status()
379 memcpy(volume->name, vldb->name, AFS_MAXVOLNAME); in afs_update_volume_status()
380 volume->name_len = vldb->name_len; in afs_update_volume_status()
390 write_lock(&volume->servers_lock); in afs_update_volume_status()
393 old = rcu_dereference_protected(volume->servers, in afs_update_volume_status()
394 lockdep_is_held(&volume->servers_lock)); in afs_update_volume_status()
396 new->seq = volume->servers_seq + 1; in afs_update_volume_status()
397 rcu_assign_pointer(volume->servers, new); in afs_update_volume_status()
399 volume->servers_seq++; in afs_update_volume_status()
404 if (new->ro_replicating) in afs_update_volume_status()
405 volume->update_at = ktime_get_real_seconds() + 10 * 60; in afs_update_volume_status()
407 volume->update_at = ktime_get_real_seconds() + afs_volume_record_life; in afs_update_volume_status()
408 write_unlock(&volume->servers_lock); in afs_update_volume_status()
412 afs_put_serverlist(volume->cell->net, discard); in afs_update_volume_status()
431 if (test_bit(AFS_VOLUME_WAIT, &volume->flags)) in afs_check_volume_status()
433 if (volume->update_at <= ktime_get_real_seconds() || in afs_check_volume_status()
434 test_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags)) in afs_check_volume_status()
440 if (!test_and_set_bit_lock(AFS_VOLUME_UPDATING, &volume->flags)) { in afs_check_volume_status()
441 clear_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags); in afs_check_volume_status()
442 ret = afs_update_volume_status(volume, op->key); in afs_check_volume_status()
444 set_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags); in afs_check_volume_status()
445 clear_bit_unlock(AFS_VOLUME_WAIT, &volume->flags); in afs_check_volume_status()
446 clear_bit_unlock(AFS_VOLUME_UPDATING, &volume->flags); in afs_check_volume_status()
447 wake_up_bit(&volume->flags, AFS_VOLUME_WAIT); in afs_check_volume_status()
453 if (!test_bit(AFS_VOLUME_WAIT, &volume->flags)) { in afs_check_volume_status()
458 ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT, in afs_check_volume_status()
459 (op->flags & AFS_OPERATION_UNINTR) ? in afs_check_volume_status()
461 if (ret == -ERESTARTSYS) { in afs_check_volume_status()
468 _leave(" = -ESTALE"); in afs_check_volume_status()
469 return -ESTALE; in afs_check_volume_status()