26 static inline bool is_btree_node(struct btree_path *path, unsigned l)  in is_btree_node()  argument
28 	return l < BTREE_MAX_DEPTH && !IS_ERR_OR_NULL(path->l[l].b);  in is_btree_node()
46 static inline int btree_node_locked_type(struct btree_path *path,  in btree_node_locked_type()  argument
49 	return BTREE_NODE_UNLOCKED + ((path->nodes_locked >> (level << 1)) & 3);  in btree_node_locked_type()
52 static inline bool btree_node_write_locked(struct btree_path *path, unsigned l)  in btree_node_write_locked()  argument
54 	return btree_node_locked_type(path, l) == BTREE_NODE_WRITE_LOCKED;  in btree_node_write_locked()
57 static inline bool btree_node_intent_locked(struct btree_path *path, unsigned l)  in btree_node_intent_locked()  argument
59 	return btree_node_locked_type(path, l) == BTREE_NODE_INTENT_LOCKED;  in btree_node_intent_locked()
62 static inline bool btree_node_read_locked(struct btree_path *path, unsigned l)  in btree_node_read_locked()  argument
64 	return btree_node_locked_type(path, l) == BTREE_NODE_READ_LOCKED;  in btree_node_read_locked()
67 static inline bool btree_node_locked(struct btree_path *path, unsigned level)  in btree_node_locked()  argument
69 	return btree_node_locked_type(path, level) != BTREE_NODE_UNLOCKED;  in btree_node_locked()
72 static inline void mark_btree_node_locked_noreset(struct btree_path *path,  in mark_btree_node_locked_noreset()  argument
80 	path->nodes_locked &= ~(3U << (level << 1));  in mark_btree_node_locked_noreset()
81 	path->nodes_locked |= (type + 1) << (level << 1);  in mark_btree_node_locked_noreset()
84 static inline void mark_btree_node_unlocked(struct btree_path *path,  in mark_btree_node_unlocked()  argument
87 	EBUG_ON(btree_node_write_locked(path, level));  in mark_btree_node_unlocked()
88 	mark_btree_node_locked_noreset(path, level, BTREE_NODE_UNLOCKED);  in mark_btree_node_unlocked()
92 					  struct btree_path *path,  in mark_btree_node_locked()  argument
96 	mark_btree_node_locked_noreset(path, level, (enum btree_node_locked_type) type);  in mark_btree_node_locked()
98 	path->l[level].lock_taken_time = local_clock();  in mark_btree_node_locked()
102 static inline enum six_lock_type __btree_lock_want(struct btree_path *path, int level)  in __btree_lock_want()  argument
104 	return level < path->locks_want  in __btree_lock_want()
110 btree_lock_want(struct btree_path *path, int level)  in btree_lock_want()  argument
112 	if (level < path->level)  in btree_lock_want()
114 	if (level < path->locks_want)  in btree_lock_want()
116 	if (level == path->level)  in btree_lock_want()
122 					      struct btree_path *path, unsigned level)  in btree_trans_lock_hold_time_update()  argument
126 				 path->l[level].lock_taken_time,  in btree_trans_lock_hold_time_update()
134 				     struct btree_path *path, unsigned level)  in btree_node_unlock()  argument
136 	int lock_type = btree_node_locked_type(path, level);  in btree_node_unlock()
141 		six_unlock_type(&path->l[level].b->c.lock, lock_type);  in btree_node_unlock()
142 		btree_trans_lock_hold_time_update(trans, path, level);  in btree_node_unlock()
144 	mark_btree_node_unlocked(path, level);  in btree_node_unlock()
147 static inline int btree_path_lowest_level_locked(struct btree_path *path)  in btree_path_lowest_level_locked()  argument
149 	return __ffs(path->nodes_locked) >> 1;  in btree_path_lowest_level_locked()
152 static inline int btree_path_highest_level_locked(struct btree_path *path)  in btree_path_highest_level_locked()  argument
154 	return __fls(path->nodes_locked) >> 1;  in btree_path_highest_level_locked()
158 					    struct btree_path *path)  in __bch2_btree_path_unlock()  argument
160 	btree_path_set_dirty(path, BTREE_ITER_NEED_RELOCK);  in __bch2_btree_path_unlock()
162 	while (path->nodes_locked)  in __bch2_btree_path_unlock()
163 		btree_node_unlock(trans, path, btree_path_lowest_level_locked(path));  in __bch2_btree_path_unlock()
171 bch2_btree_node_unlock_write_inlined(struct btree_trans *trans, struct btree_path *path,  in bch2_btree_node_unlock_write_inlined()  argument
177 	EBUG_ON(path->l[b->c.level].b != b);  in bch2_btree_node_unlock_write_inlined()
178 	EBUG_ON(path->l[b->c.level].lock_seq != six_lock_seq(&b->c.lock));  in bch2_btree_node_unlock_write_inlined()
179 	EBUG_ON(btree_node_locked_type(path, b->c.level) != SIX_LOCK_write);  in bch2_btree_node_unlock_write_inlined()
181 	mark_btree_node_locked_noreset(path, b->c.level, BTREE_NODE_INTENT_LOCKED);  in bch2_btree_node_unlock_write_inlined()
242 	struct btree_path *path;  in btree_node_lock_increment()  local
245 	trans_for_each_path(trans, path, i)  in btree_node_lock_increment()
246 		if (&path->l[level].b->c == b &&  in btree_node_lock_increment()
247 		    btree_node_locked_type(path, level) >= want) {  in btree_node_lock_increment()
256 			struct btree_path *path,  in btree_node_lock()  argument
268 	    !(ret = btree_node_lock_nopath(trans, b, type, btree_path_ip_allocated(path)))) {  in btree_node_lock()
270 		path->l[b->level].lock_taken_time = local_clock();  in btree_node_lock()
281 					  struct btree_path *path,  in __btree_node_lock_write()  argument
285 	EBUG_ON(&path->l[b->level].b->c != b);  in __btree_node_lock_write()
286 	EBUG_ON(path->l[b->level].lock_seq != six_lock_seq(&b->lock));  in __btree_node_lock_write()
287 	EBUG_ON(!btree_node_intent_locked(path, b->level));  in __btree_node_lock_write()
294 	mark_btree_node_locked_noreset(path, b->level, BTREE_NODE_WRITE_LOCKED);  in __btree_node_lock_write()
298 		: __bch2_btree_node_lock_write(trans, path, b, lock_may_not_fail);  in __btree_node_lock_write()
303 			   struct btree_path *path,  in bch2_btree_node_lock_write()  argument
306 	return __btree_node_lock_write(trans, path, b, false);  in bch2_btree_node_lock_write()
320 				struct btree_path *path, unsigned long trace_ip)  in bch2_btree_path_relock()  argument
322 	return btree_node_locked(path, path->level)  in bch2_btree_path_relock()
324 		: __bch2_btree_path_relock(trans, path, trace_ip);  in bch2_btree_path_relock()
330 					  struct btree_path *path, unsigned level)  in bch2_btree_node_relock()  argument
332 	EBUG_ON(btree_node_locked(path, level) &&  in bch2_btree_node_relock()
333 		!btree_node_write_locked(path, level) &&  in bch2_btree_node_relock()
334 		btree_node_locked_type(path, level) != __btree_lock_want(path, level));  in bch2_btree_node_relock()
336 	return likely(btree_node_locked(path, level)) ||  in bch2_btree_node_relock()
337 		(!IS_ERR_OR_NULL(path->l[level].b) &&  in bch2_btree_node_relock()
338 		 __bch2_btree_node_relock(trans, path, level, true));  in bch2_btree_node_relock()
342 						  struct btree_path *path, unsigned level)  in bch2_btree_node_relock_notrace()  argument
344 	EBUG_ON(btree_node_locked(path, level) &&  in bch2_btree_node_relock_notrace()
345 		!btree_node_write_locked(path, level) &&  in bch2_btree_node_relock_notrace()
346 		btree_node_locked_type(path, level) != __btree_lock_want(path, level));  in bch2_btree_node_relock_notrace()
348 	return likely(btree_node_locked(path, level)) ||  in bch2_btree_node_relock_notrace()
349 		(!IS_ERR_OR_NULL(path->l[level].b) &&  in bch2_btree_node_relock_notrace()
350 		 __bch2_btree_node_relock(trans, path, level, false));  in bch2_btree_node_relock_notrace()
364 					  struct btree_path *path,  in bch2_btree_path_upgrade()  argument
368 	unsigned old_locks_want = path->locks_want;  in bch2_btree_path_upgrade()
372 	if (path->locks_want < new_locks_want  in bch2_btree_path_upgrade()
373 	    ? __bch2_btree_path_upgrade(trans, path, new_locks_want, &f)  in bch2_btree_path_upgrade()
374 	    : path->uptodate == BTREE_ITER_UPTODATE)  in bch2_btree_path_upgrade()
377 	trace_and_count(trans->c, trans_restart_upgrade, trans, _THIS_IP_, path,  in bch2_btree_path_upgrade()
384 static inline void btree_path_set_should_be_locked(struct btree_path *path)  in btree_path_set_should_be_locked()  argument
386 	EBUG_ON(!btree_node_locked(path, path->level));  in btree_path_set_should_be_locked()
387 	EBUG_ON(path->uptodate);  in btree_path_set_should_be_locked()
389 	path->should_be_locked = true;  in btree_path_set_should_be_locked()
393 				      struct btree_path *path,  in __btree_path_set_level_up()  argument
396 	btree_node_unlock(trans, path, l);  in __btree_path_set_level_up()
397 	path->l[l].b = ERR_PTR(-BCH_ERR_no_btree_node_up);  in __btree_path_set_level_up()
401 				    struct btree_path *path)  in btree_path_set_level_up()  argument
403 	__btree_path_set_level_up(trans, path, path->level++);  in btree_path_set_level_up()
404 	btree_path_set_dirty(path, BTREE_ITER_NEED_TRAVERSE);  in btree_path_set_level_up()
420 static inline void bch2_btree_path_verify_locks(struct btree_path *path) {}  in bch2_btree_path_verify_locks()  argument