* updating the iterator state
*/
-#include <linux/six.h>
-
#include "btree_iter.h"
+#include "six.h"
+
+void bch2_btree_lock_init(struct btree_bkey_cached_common *, enum six_lock_init_flags);
-extern struct lock_class_key bch2_btree_node_lock_key;
+#ifdef CONFIG_LOCKDEP
+void bch2_assert_btree_nodes_not_locked(void);
+#else
+static inline void bch2_assert_btree_nodes_not_locked(void) {}
+#endif
+
+void bch2_trans_unlock_noassert(struct btree_trans *);
static inline bool is_btree_node(struct btree_path *path, unsigned l)
{
static inline void mark_btree_node_locked(struct btree_trans *trans,
struct btree_path *path,
unsigned level,
- enum six_lock_type type)
+ enum btree_node_locked_type type)
{
- mark_btree_node_locked_noreset(path, level, type);
+ mark_btree_node_locked_noreset(path, level, (enum btree_node_locked_type) type);
#ifdef CONFIG_BCACHEFS_LOCK_TIME_STATS
path->l[level].lock_taken_time = local_clock();
#endif
struct btree_path *linked;
EBUG_ON(path->l[b->c.level].b != b);
- EBUG_ON(path->l[b->c.level].lock_seq + 1 != b->c.lock.state.seq);
+ EBUG_ON(path->l[b->c.level].lock_seq != six_lock_seq(&b->c.lock));
EBUG_ON(btree_node_locked_type(path, b->c.level) != SIX_LOCK_write);
- mark_btree_node_locked_noreset(path, b->c.level, SIX_LOCK_intent);
+ mark_btree_node_locked_noreset(path, b->c.level, BTREE_NODE_INTENT_LOCKED);
trans_for_each_path_with_node(trans, b, linked)
- linked->l[b->c.level].lock_seq += 2;
+ linked->l[b->c.level].lock_seq++;
six_unlock_write(&b->c.lock);
}
static inline int __btree_node_lock_nopath(struct btree_trans *trans,
struct btree_bkey_cached_common *b,
enum six_lock_type type,
- bool lock_may_not_fail)
+ bool lock_may_not_fail,
+ unsigned long ip)
{
int ret;
trans->lock_must_abort = false;
trans->locking = b;
- ret = six_lock_type_waiter(&b->lock, type, &trans->locking_wait,
- bch2_six_check_for_deadlock, trans);
+ ret = six_lock_ip_waiter(&b->lock, type, &trans->locking_wait,
+ bch2_six_check_for_deadlock, trans, ip);
WRITE_ONCE(trans->locking, NULL);
WRITE_ONCE(trans->locking_wait.start_time, 0);
return ret;
static inline int __must_check
btree_node_lock_nopath(struct btree_trans *trans,
struct btree_bkey_cached_common *b,
- enum six_lock_type type)
+ enum six_lock_type type,
+ unsigned long ip)
{
- return __btree_node_lock_nopath(trans, b, type, false);
+ return __btree_node_lock_nopath(trans, b, type, false, ip);
}
static inline void btree_node_lock_nopath_nofail(struct btree_trans *trans,
struct btree_bkey_cached_common *b,
enum six_lock_type type)
{
- int ret = __btree_node_lock_nopath(trans, b, type, true);
+ int ret = __btree_node_lock_nopath(trans, b, type, true, _THIS_IP_);
BUG_ON(ret);
}
trans_for_each_path(trans, path)
if (&path->l[level].b->c == b &&
btree_node_locked_type(path, level) >= want) {
- six_lock_increment(&b->lock, want);
+ six_lock_increment(&b->lock, (enum six_lock_type) want);
return true;
}
int ret = 0;
EBUG_ON(level >= BTREE_MAX_DEPTH);
- EBUG_ON(!(trans->paths_allocated & (1ULL << path->idx)));
+ EBUG_ON(!test_bit(path->idx, trans->paths_allocated));
if (likely(six_trylock_type(&b->lock, type)) ||
- btree_node_lock_increment(trans, b, level, type) ||
- !(ret = btree_node_lock_nopath(trans, b, type))) {
+ btree_node_lock_increment(trans, b, level, (enum btree_node_locked_type) type) ||
+ !(ret = btree_node_lock_nopath(trans, b, type, btree_path_ip_allocated(path)))) {
#ifdef CONFIG_BCACHEFS_LOCK_TIME_STATS
path->l[b->level].lock_taken_time = local_clock();
#endif
bool lock_may_not_fail)
{
EBUG_ON(&path->l[b->level].b->c != b);
- EBUG_ON(path->l[b->level].lock_seq != b->lock.state.seq);
+ EBUG_ON(path->l[b->level].lock_seq != six_lock_seq(&b->lock));
EBUG_ON(!btree_node_intent_locked(path, b->level));
/*
* write lock: thus, we need to tell the cycle detector we have a write
* lock _before_ taking the lock:
*/
- mark_btree_node_locked_noreset(path, b->level, SIX_LOCK_write);
+ mark_btree_node_locked_noreset(path, b->level, BTREE_NODE_WRITE_LOCKED);
return likely(six_trylock_write(&b->lock))
? 0
: __bch2_btree_node_lock_write(trans, path, b, lock_may_not_fail);
}
-static inline void bch2_btree_node_lock_write_nofail(struct btree_trans *trans,
- struct btree_path *path,
- struct btree_bkey_cached_common *b)
-{
- int ret = __btree_node_lock_write(trans, path, b, true);
- BUG_ON(ret);
-}
-
static inline int __must_check
bch2_btree_node_lock_write(struct btree_trans *trans,
struct btree_path *path,
return __btree_node_lock_write(trans, path, b, false);
}
+void bch2_btree_node_lock_write_nofail(struct btree_trans *,
+ struct btree_path *,
+ struct btree_bkey_cached_common *);
+
/* relock: */
bool bch2_btree_path_relock_norestart(struct btree_trans *,
struct btree_path *, unsigned long);
+int __bch2_btree_path_relock(struct btree_trans *,
+ struct btree_path *, unsigned long);
+
+static inline int bch2_btree_path_relock(struct btree_trans *trans,
+ struct btree_path *path, unsigned long trace_ip)
+{
+ return btree_node_locked(path, path->level)
+ ? 0
+ : __bch2_btree_path_relock(trans, path, trace_ip);
+}
+
bool __bch2_btree_node_relock(struct btree_trans *, struct btree_path *, unsigned, bool trace);
static inline bool bch2_btree_node_relock(struct btree_trans *trans,
__bch2_btree_node_relock(trans, path, level, false));
}
-static inline int bch2_btree_path_relock(struct btree_trans *trans,
- struct btree_path *path, unsigned long trace_ip)
-{
- if (!bch2_btree_path_relock_norestart(trans, path, trace_ip)) {
- trace_and_count(trans->c, trans_restart_relock_path, trans, trace_ip, path);
- return btree_trans_restart(trans, BCH_ERR_transaction_restart_relock_path);
- }
+/* upgrade */
- return 0;
-}
-/* upgrade */
+struct get_locks_fail {
+ unsigned l;
+ struct btree *b;
+};
bool bch2_btree_path_upgrade_noupgrade_sibs(struct btree_trans *,
- struct btree_path *, unsigned);
+ struct btree_path *, unsigned,
+ struct get_locks_fail *);
+
bool __bch2_btree_path_upgrade(struct btree_trans *,
- struct btree_path *, unsigned);
+ struct btree_path *, unsigned,
+ struct get_locks_fail *);
static inline int bch2_btree_path_upgrade(struct btree_trans *trans,
struct btree_path *path,
unsigned new_locks_want)
{
+ struct get_locks_fail f;
unsigned old_locks_want = path->locks_want;
new_locks_want = min(new_locks_want, BTREE_MAX_DEPTH);
if (path->locks_want < new_locks_want
- ? __bch2_btree_path_upgrade(trans, path, new_locks_want)
+ ? __bch2_btree_path_upgrade(trans, path, new_locks_want, &f)
: path->uptodate == BTREE_ITER_UPTODATE)
return 0;
trace_and_count(trans->c, trans_restart_upgrade, trans, _THIS_IP_, path,
- old_locks_want, new_locks_want);
+ old_locks_want, new_locks_want, &f);
return btree_trans_restart(trans, BCH_ERR_transaction_restart_upgrade);
}
projects / bcachefs-tools-debian / blobdiff