Defined in 1 files as a prototype:

Defined in 1 files as a function:

Referenced in 2 files:

Smatch caller information:

drivers/md/bcache/btree.c bch_btree_insert_node() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->c 4096-ptr_max
PARAM_VALUE 0 b->c->cache 4096-ptr_max
PARAM_VALUE 0 b->io_mutex.first_waiter->up 0-1
PARAM_VALUE 0 b->keys.expensive_debug_checks 4096-ptr_max
PARAM_VALUE 0 b->keys.ops 4096-ptr_max
PARAM_VALUE 0 b->keys.ops->insert_fixup 3359186278354853888,8738410596996493312
PARAM_VALUE 0 b->keys.ops->key_bad 2053114610689146880,2965826758702149632
PARAM_VALUE 0 b->keys.ops->key_dump 5824308303565893632
PARAM_VALUE 0 b->keys.ops->key_invalid 5042869928339255296,8931906019736064000
PARAM_VALUE 0 b->keys.ops->key_merge 0,8943847820907044864
PARAM_VALUE 0 b->keys.ops->key_to_text 6644520337947410432
PARAM_VALUE 0 b->keys.ops->sort_cmp 127698777507876864,850943255651803136
PARAM_VALUE 0 b->keys.ops->sort_fixup 0,8945762327650275328
PARAM_VALUE 0 b->keys.page_order 0-63,255
PARAM_VALUE 0 b->keys.set 4096-u64max
PARAM_VALUE 0 b->level 1-255
PARAM_VALUE 0 b->lock.first_waiter->handoff_set 0-1
PARAM_VALUE 0 b->lock.first_waiter->type 0-1
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 8932705337623248896
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
CAPPED_DATA 0 b->keys.page_order 1
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 0 b $0
MEM_ZERO 1 parent
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE 0 b->c->bio_meta.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->bio_split.bio_pool.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->bio_split.bvec_pool.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->fill_iter.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->nr_uuids
NO_OVERFLOW_SIMPLE 0 b->c->search.min_nr
LOCK2 0 &b->write_lock
HALF_LOCKED2 &n->io_mutex
HALF_LOCKED2 0 b
HALF_LOCKED2 0 &b->io_mutex
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/btree.c bch_btree_leaf_dirty() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->c 4096-ptr_max
PARAM_VALUE 0 b->c->cache 4096-ptr_max
PARAM_VALUE 0 b->io.s->done 0-1
PARAM_VALUE 0 b->io_mutex.first_waiter->up 0-1
PARAM_VALUE 0 b->keys.expensive_debug_checks 4096-ptr_max
PARAM_VALUE 0 b->keys.ops 4096-ptr_max
PARAM_VALUE 0 b->keys.ops->insert_fixup 3359186278354853888,8738410596996493312
PARAM_VALUE 0 b->keys.ops->key_bad 2053114610689146880,2965826758702149632
PARAM_VALUE 0 b->keys.ops->key_dump 5824308303565893632
PARAM_VALUE 0 b->keys.ops->key_invalid 5042869928339255296,8931906019736064000
PARAM_VALUE 0 b->keys.ops->key_merge 0,8943847820907044864
PARAM_VALUE 0 b->keys.ops->key_to_text 6644520337947410432
PARAM_VALUE 0 b->keys.ops->sort_cmp 127698777507876864,850943255651803136
PARAM_VALUE 0 b->keys.ops->sort_fixup 0,8945762327650275328
PARAM_VALUE 0 b->keys.page_order 0-63,255
PARAM_VALUE 0 b->keys.set 4096-u64max
PARAM_VALUE 0 b->level 0
PARAM_VALUE 0 b->lock.first_waiter->handoff_set 0-1
PARAM_VALUE 0 b->lock.first_waiter->type 0-1
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 0 b->written 1-u16max
PARAM_VALUE 1 parent 0
CAPPED_DATA 0 b->keys.page_order 1
DATA_SOURCE 0 b $0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE 0 b->c->bio_meta.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->bio_split.bio_pool.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->bio_split.bvec_pool.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->fill_iter.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->nr_uuids
NO_OVERFLOW_SIMPLE 0 b->c->search.min_nr
LOCK2 0 &b->write_lock
HALF_LOCKED2 &n1->io_mutex
HALF_LOCKED2 0 b
HALF_LOCKED2 0 &b->io_mutex
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/btree.c bch_btree_node_write_sync() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->keys.set->data->keys 0-4294967295
PARAM_VALUE 0 b->keys.set->size 0
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.owner_cpu 4294967295
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.raw_lock.val.counter s32min-s32max
PARAM_VALUE 0 b->write_lock.first_waiter->task->usage.refs.counter s32min-s32max
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 8305845582910631936
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 0 b $0
MEM_ZERO 1 parent
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2 0 &b->write_lock
HALF_LOCKED2 b
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/btree.c btree_gc_coalesce() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 1 parent 1065904848438050816
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
MEM_ZERO 1 parent
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2 &b->io_mutex
HALF_LOCKED2 &last->b->io_mutex
HALF_LOCKED2 b

drivers/md/bcache/btree.c btree_gc_recurse() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->c 4096-ptr_max
PARAM_VALUE 0 b->io_mutex.first_waiter->up 0-1
PARAM_VALUE 0 b->lock.first_waiter->handoff_set 0-1
PARAM_VALUE 0 b->lock.first_waiter->type 0-1
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 4366263248925515776
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 1 parent $2
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2 0 &b->write_lock
HALF_LOCKED2 b
HALF_LOCKED2 0 &b->io_mutex
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/btree.c btree_gc_recurse() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->io_mutex.first_waiter->up 0-1
PARAM_VALUE 0 b->lock.first_waiter->handoff_set 0-1
PARAM_VALUE 0 b->lock.first_waiter->type 0-1
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 4366263248925515776
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 1 parent $2
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2 0 &b->write_lock
HALF_LOCKED2 &last->b->io_mutex
HALF_LOCKED2 &n->io_mutex
HALF_LOCKED2 b
HALF_LOCKED2 0 &b->io_mutex
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/btree.c btree_split() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 3818274395306029056
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
BUF_SIZE 0 b (-1),1120
BUF_SIZE 0 b (-1),1120
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 0 b r bch_btree_node_alloc
MEM_ZERO 1 parent
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2 &n1->write_lock
LOCK2 0 &b->write_lock
HALF_LOCKED2 &b->io_mutex
HALF_LOCKED2 &n->io_mutex
HALF_LOCKED2 &n1->io_mutex
HALF_LOCKED2 b
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/btree.c btree_split() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->c 4096-ptr_max
PARAM_VALUE 0 b->c->cache 4096-ptr_max
PARAM_VALUE 0 b->keys.expensive_debug_checks 4096-ptr_max
PARAM_VALUE 0 b->keys.set->data->keys 0-4294967295
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.owner_cpu 4294967295
PARAM_VALUE 0 b->write_lock.first_waiter->task->blocked_lock.raw_lock.val.counter s32min-s32max
PARAM_VALUE 0 b->write_lock.first_waiter->task->usage.refs.counter s32min-s32max
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 3818274395306029056
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 0 b r btree_node_alloc_replacement
MEM_ZERO 1 parent
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2 0 &b->write_lock
HALF_LOCKED2 &b->io_mutex
HALF_LOCKED2 &n->io_mutex
HALF_LOCKED2 &n1->io_mutex
HALF_LOCKED2 &n2->io_mutex
HALF_LOCKED2 b

drivers/md/bcache/btree.c btree_split() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->keys.expensive_debug_checks 4096-ptr_max
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 1 parent 3818274395306029056
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
BUF_SIZE 0 b (-1),1120
BUF_SIZE 0 b (-1),1120
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 0 b r bch_btree_node_alloc
MEM_ZERO 1 parent
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2 &n1->io_mutex
LOCK2 &n2->io_mutex
LOCK2 0 &b->write_lock
HALF_LOCKED2 &b->io_mutex
HALF_LOCKED2 &n->io_mutex
HALF_LOCKED2 &n1->io_mutex
HALF_LOCKED2 b
TYPE_LOCK (struct btree)->io_mutex
TYPE_LOCK (struct btree)->write_lock

drivers/md/bcache/super.c run_cache_set() -> bch_btree_node_write()

Type Parameter Key Value
PARAM_VALUE 0 b 4096-ptr_max
PARAM_VALUE 0 b->c 4096-ptr_max
PARAM_VALUE 0 b->c->cache 4096-ptr_max
PARAM_VALUE 0 b->flags 0
PARAM_VALUE 0 b->hash.next->pprev 1-u64max
PARAM_VALUE 0 b->hash.pprev 4096-ptr_max
PARAM_VALUE 0 b->io_mutex.count 1
PARAM_VALUE 0 b->io_mutex.first_waiter->up 0-1
PARAM_VALUE 0 b->keys.expensive_debug_checks 4096-ptr_max
PARAM_VALUE 0 b->keys.last_set_unwritten 1
PARAM_VALUE 0 b->keys.ops 4889910169258827776,7358500608655163392
PARAM_VALUE 0 b->keys.ops->insert_fixup 3359186278354853888,8738410596996493312
PARAM_VALUE 0 b->keys.ops->key_bad 2053114610689146880,2965826758702149632
PARAM_VALUE 0 b->keys.ops->key_dump 5824308303565893632
PARAM_VALUE 0 b->keys.ops->key_invalid 5042869928339255296,8931906019736064000
PARAM_VALUE 0 b->keys.ops->key_merge 0,8943847820907044864
PARAM_VALUE 0 b->keys.ops->key_to_text 6644520337947410432
PARAM_VALUE 0 b->keys.ops->sort_cmp 127698777507876864,850943255651803136
PARAM_VALUE 0 b->keys.ops->sort_fixup 0,8945762327650275328
PARAM_VALUE 0 b->keys.set 4096-ptr_max
PARAM_VALUE 0 b->keys.set->data->keys 0
PARAM_VALUE 0 b->list.next 4096-ptr_max
PARAM_VALUE 0 b->list.prev 4096-ptr_max
PARAM_VALUE 0 b->lock.dep_map.cpu 0
PARAM_VALUE 0 b->lock.first_waiter->handoff_set 0-1
PARAM_VALUE 0 b->lock.first_waiter->type 0-1
PARAM_VALUE 0 b->parent 0
PARAM_VALUE 0 b->parent->keys.page_order 0-63,255
PARAM_VALUE 0 b->write_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.first_waiter 0,4096-ptr_max
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->next 5159360019465732096
PARAM_VALUE 0 b->write_lock.first_waiter->list.prev->prev 5159360019465732096
PARAM_VALUE 0 b->write_lock.osq.tail.counter 0-s32max
PARAM_VALUE 0 b->write_lock.wait_lock.dep_map->name 0-255
PARAM_VALUE 0 b->write_lock.wait_lock.owner (-1)
PARAM_VALUE 0 b->write_lock.wait_lock.owner_cpu u32max
PARAM_VALUE 0 b->written 0
PARAM_VALUE 1 parent 13263024402882560
PARAM_VALUE 1 parent->all.next 0
PARAM_VALUE 1 parent->all.prev 0
PARAM_VALUE 1 parent->fn 0
PARAM_VALUE 1 parent->ip 0
PARAM_VALUE 1 parent->magic 3226751436
PARAM_VALUE 1 parent->parent 0
PARAM_VALUE 1 parent->remaining.counter 1073741825
PARAM_VALUE 1 parent->s 0
PARAM_VALUE 1 parent->wq 0
BUF_SIZE 0 b (-1),1120
BUF_SIZE 0 b (-1),1120
CAPPED_DATA 0 b->keys.set 1
CAPPED_DATA 0 b->keys.set->data 1
CAPPED_DATA 0 &b->write_lock 1
DATA_SOURCE 0 b r __bch_btree_node_alloc
MEM_ZERO 1 parent
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE 0 b->c->bio_meta.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->bio_split.bio_pool.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->bio_split.bvec_pool.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->fill_iter.min_nr
NO_OVERFLOW_SIMPLE 0 b->c->nr_uuids
NO_OVERFLOW_SIMPLE 0 b->c->search.min_nr
LOCK2 global &bch_register_lock
LOCK2 0 &b->write_lock
HALF_LOCKED2 &of->mutex
HALF_LOCKED2 &pool->lock
TYPE_LOCK (struct btree)->write_lock