Lines Matching +full:1 +full:- +full:cell
1 // SPDX-License-Identifier: GPL-2.0-or-later
15 * Insert a volume into a cell. If there's an existing volume record, that is
18 static struct afs_volume *afs_insert_volume_into_cell(struct afs_cell *cell, in afs_insert_volume_into_cell() argument
24 write_seqlock(&cell->volume_lock); in afs_insert_volume_into_cell()
26 pp = &cell->volumes.rb_node; in afs_insert_volume_into_cell()
30 if (p->vid < volume->vid) { in afs_insert_volume_into_cell()
31 pp = &(*pp)->rb_left; in afs_insert_volume_into_cell()
32 } else if (p->vid > volume->vid) { in afs_insert_volume_into_cell()
33 pp = &(*pp)->rb_right; in afs_insert_volume_into_cell()
40 set_bit(AFS_VOLUME_RM_TREE, &volume->flags); in afs_insert_volume_into_cell()
41 rb_replace_node_rcu(&p->cell_node, &volume->cell_node, &cell->volumes); in afs_insert_volume_into_cell()
45 rb_link_node_rcu(&volume->cell_node, parent, pp); in afs_insert_volume_into_cell()
46 rb_insert_color(&volume->cell_node, &cell->volumes); in afs_insert_volume_into_cell()
47 hlist_add_head_rcu(&volume->proc_link, &cell->proc_volumes); in afs_insert_volume_into_cell()
50 write_sequnlock(&cell->volume_lock); in afs_insert_volume_into_cell()
57 struct afs_cell *cell = volume->cell; in afs_remove_volume_from_cell() local
59 if (!hlist_unhashed(&volume->proc_link)) { in afs_remove_volume_from_cell()
60 trace_afs_volume(volume->vid, refcount_read(&cell->ref), in afs_remove_volume_from_cell()
62 write_seqlock(&cell->volume_lock); in afs_remove_volume_from_cell()
63 hlist_del_rcu(&volume->proc_link); in afs_remove_volume_from_cell()
64 if (!test_and_set_bit(AFS_VOLUME_RM_TREE, &volume->flags)) in afs_remove_volume_from_cell()
65 rb_erase(&volume->cell_node, &cell->volumes); in afs_remove_volume_from_cell()
66 write_sequnlock(&cell->volume_lock); in afs_remove_volume_from_cell()
79 int ret = -ENOMEM; in afs_alloc_volume()
85 volume->vid = vldb->vid[params->type]; in afs_alloc_volume()
86 volume->update_at = ktime_get_real_seconds() + afs_volume_record_life; in afs_alloc_volume()
87 volume->cell = afs_get_cell(params->cell, afs_cell_trace_get_vol); in afs_alloc_volume()
88 volume->type = params->type; in afs_alloc_volume()
89 volume->type_force = params->force; in afs_alloc_volume()
90 volume->name_len = vldb->name_len; in afs_alloc_volume()
92 refcount_set(&volume->ref, 1); in afs_alloc_volume()
93 INIT_HLIST_NODE(&volume->proc_link); in afs_alloc_volume()
94 rwlock_init(&volume->servers_lock); in afs_alloc_volume()
95 rwlock_init(&volume->cb_v_break_lock); in afs_alloc_volume()
96 memcpy(volume->name, vldb->name, vldb->name_len + 1); in afs_alloc_volume()
98 slist = afs_alloc_server_list(params->cell, params->key, vldb, type_mask); in afs_alloc_volume()
104 refcount_set(&slist->usage, 1); in afs_alloc_volume()
105 rcu_assign_pointer(volume->servers, slist); in afs_alloc_volume()
106 trace_afs_volume(volume->vid, 1, afs_volume_trace_alloc); in afs_alloc_volume()
110 afs_put_cell(volume->cell, afs_cell_trace_put_vol); in afs_alloc_volume()
129 volume = afs_insert_volume_into_cell(params->cell, candidate); in afs_lookup_volume()
131 afs_put_volume(params->net, candidate, afs_volume_trace_put_cell_dup); in afs_lookup_volume()
138 static struct afs_vldb_entry *afs_vl_lookup_vldb(struct afs_cell *cell, in afs_vl_lookup_vldb() argument
143 struct afs_vldb_entry *vldb = ERR_PTR(-EDESTADDRREQ); in afs_vl_lookup_vldb()
147 if (!afs_begin_vlserver_operation(&vc, cell, key)) in afs_vl_lookup_vldb()
148 return ERR_PTR(-ERESTARTSYS); in afs_vl_lookup_vldb()
163 * "%[cell:]volume[.]" R/W volume
164 * "#[cell:]volume[.]" R/O or R/W volume (rwparent=0),
165 * or R/W (rwparent=1) volume
166 * "%[cell:]volume.readonly" R/O volume
167 * "#[cell:]volume.readonly" R/O volume
168 * "%[cell:]volume.backup" Backup volume
169 * "#[cell:]volume.backup" Backup volume
171 * The cell name is optional, and defaults to the current cell.
175 * - Rule 1: Explicit type suffix forces access of that type or nothing
177 * - Rule 2: If parent volume is R/O, then mount R/O volume by preference, R/W
179 * - Rule 3: If parent volume is R/W, then only mount R/W volume unless
186 unsigned long type_mask = 1UL << params->type; in afs_create_volume()
188 vldb = afs_vl_lookup_vldb(params->cell, params->key, in afs_create_volume()
189 params->volname, params->volnamesz); in afs_create_volume()
193 if (test_bit(AFS_VLDB_QUERY_ERROR, &vldb->flags)) { in afs_create_volume()
194 volume = ERR_PTR(vldb->error); in afs_create_volume()
199 volume = ERR_PTR(-ENOMEDIUM); in afs_create_volume()
200 if (params->force) { in afs_create_volume()
201 if (!(vldb->flags & type_mask)) in afs_create_volume()
203 } else if (test_bit(AFS_VLDB_HAS_RO, &vldb->flags)) { in afs_create_volume()
204 params->type = AFSVL_ROVOL; in afs_create_volume()
205 } else if (test_bit(AFS_VLDB_HAS_RW, &vldb->flags)) { in afs_create_volume()
206 params->type = AFSVL_RWVOL; in afs_create_volume()
211 type_mask = 1UL << params->type; in afs_create_volume()
227 ASSERTCMP(volume->cache, ==, NULL); in afs_destroy_volume()
231 afs_put_serverlist(net, rcu_access_pointer(volume->servers)); in afs_destroy_volume()
232 afs_put_cell(volume->cell, afs_cell_trace_put_vol); in afs_destroy_volume()
233 trace_afs_volume(volume->vid, refcount_read(&volume->ref), in afs_destroy_volume()
247 if (__refcount_inc_not_zero(&volume->ref, &r)) { in afs_try_get_volume()
248 trace_afs_volume(volume->vid, r + 1, reason); in afs_try_get_volume()
263 __refcount_inc(&volume->ref, &r); in afs_get_volume()
264 trace_afs_volume(volume->vid, r + 1, reason); in afs_get_volume()
277 afs_volid_t vid = volume->vid; in afs_put_volume()
281 zero = __refcount_dec_and_test(&volume->ref, &r); in afs_put_volume()
282 trace_afs_volume(vid, r - 1, reason); in afs_put_volume()
298 volume->cell->name, volume->vid); in afs_activate_volume()
300 return -ENOMEM; in afs_activate_volume()
304 if (vcookie != ERR_PTR(-EBUSY)) { in afs_activate_volume()
311 volume->cache = vcookie; in afs_activate_volume()
322 _enter("%s", volume->name); in afs_deactivate_volume()
325 fscache_relinquish_volume(volume->cache, NULL, in afs_deactivate_volume()
326 test_bit(AFS_VOLUME_DELETED, &volume->flags)); in afs_deactivate_volume()
327 volume->cache = NULL; in afs_deactivate_volume()
348 idsz = snprintf(idbuf, sizeof(idbuf), "%llu", volume->vid); in afs_update_volume_status()
350 vldb = afs_vl_lookup_vldb(volume->cell, key, idbuf, idsz); in afs_update_volume_status()
357 if (vldb->name_len != volume->name_len || in afs_update_volume_status()
358 memcmp(vldb->name, volume->name, vldb->name_len) != 0) { in afs_update_volume_status()
360 memcpy(volume->name, vldb->name, AFS_MAXVOLNAME); in afs_update_volume_status()
361 volume->name_len = vldb->name_len; in afs_update_volume_status()
365 new = afs_alloc_server_list(volume->cell, key, in afs_update_volume_status()
366 vldb, (1 << volume->type)); in afs_update_volume_status()
372 write_lock(&volume->servers_lock); in afs_update_volume_status()
375 old = rcu_dereference_protected(volume->servers, in afs_update_volume_status()
376 lockdep_is_held(&volume->servers_lock)); in afs_update_volume_status()
378 new->seq = volume->servers_seq + 1; in afs_update_volume_status()
379 rcu_assign_pointer(volume->servers, new); in afs_update_volume_status()
381 volume->servers_seq++; in afs_update_volume_status()
385 volume->update_at = ktime_get_real_seconds() + afs_volume_record_life; in afs_update_volume_status()
386 write_unlock(&volume->servers_lock); in afs_update_volume_status()
389 afs_put_serverlist(volume->cell->net, discard); in afs_update_volume_status()
407 if (test_bit(AFS_VOLUME_WAIT, &volume->flags)) in afs_check_volume_status()
409 if (volume->update_at <= ktime_get_real_seconds() || in afs_check_volume_status()
410 test_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags)) in afs_check_volume_status()
416 if (!test_and_set_bit_lock(AFS_VOLUME_UPDATING, &volume->flags)) { in afs_check_volume_status()
417 clear_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags); in afs_check_volume_status()
418 ret = afs_update_volume_status(volume, op->key); in afs_check_volume_status()
420 set_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags); in afs_check_volume_status()
421 clear_bit_unlock(AFS_VOLUME_WAIT, &volume->flags); in afs_check_volume_status()
422 clear_bit_unlock(AFS_VOLUME_UPDATING, &volume->flags); in afs_check_volume_status()
423 wake_up_bit(&volume->flags, AFS_VOLUME_WAIT); in afs_check_volume_status()
429 if (!test_bit(AFS_VOLUME_WAIT, &volume->flags)) { in afs_check_volume_status()
434 ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT, in afs_check_volume_status()
435 (op->flags & AFS_OPERATION_UNINTR) ? in afs_check_volume_status()
437 if (ret == -ERESTARTSYS) { in afs_check_volume_status()
444 _leave(" = -ESTALE"); in afs_check_volume_status()
445 return -ESTALE; in afs_check_volume_status()