修改GPIO导出默认初始值

hc

2024-10-16 50a212ec906f7524620675f0c57357691c26c81f

 kernel/drivers/md/bcache/btree.c
..
..
@@ -885,7 +885,7 @@
885
885
  * cannibalize_bucket() will take. This means every time we unlock the root of
886
886
  * the btree, we need to release this lock if we have it held.
887
887
  */
888
-static void bch_cannibalize_unlock(struct cache_set *c)
888
+void bch_cannibalize_unlock(struct cache_set *c)
889
889
 {
890
890
 	spin_lock(&c->btree_cannibalize_lock);
891
891
 	if (c->btree_cache_alloc_lock == current) {
..
..
@@ -1090,10 +1090,12 @@
1090
1090
 				     struct btree *parent)
1091
1091
 {
1092
1092
 	BKEY_PADDED(key) k;
1093
-	struct btree *b = ERR_PTR(-EAGAIN);
1093
+	struct btree *b;
1094
1094
 
1095
1095
 	mutex_lock(&c->bucket_lock);
1096
1096
 retry:
1097
+	/* return ERR_PTR(-EAGAIN) when it fails */
1098
+	b = ERR_PTR(-EAGAIN);
1097
1099
 	if (__bch_bucket_alloc_set(c, RESERVE_BTREE, &k.key, wait))
1098
1100
 		goto err;
1099
1101
 
..
..
@@ -1138,7 +1140,7 @@
1138
1140
 {
1139
1141
 	struct btree *n = bch_btree_node_alloc(b->c, op, b->level, b->parent);
1140
1142
 
1141
-	if (!IS_ERR_OR_NULL(n)) {
1143
+	if (!IS_ERR(n)) {
1142
1144
 		mutex_lock(&n->write_lock);
1143
1145
 		bch_btree_sort_into(&b->keys, &n->keys, &b->c->sort);
1144
1146
 		bkey_copy_key(&n->key, &b->key);
..
..
@@ -1340,7 +1342,7 @@
1340
1342
 	memset(new_nodes, 0, sizeof(new_nodes));
1341
1343
 	closure_init_stack(&cl);
1342
1344
 
1343
-	while (nodes < GC_MERGE_NODES && !IS_ERR_OR_NULL(r[nodes].b))
1345
+	while (nodes < GC_MERGE_NODES && !IS_ERR(r[nodes].b))
1344
1346
 		keys += r[nodes++].keys;
1345
1347
 
1346
1348
 	blocks = btree_default_blocks(b->c) * 2 / 3;
..
..
@@ -1352,7 +1354,7 @@
1352
1354
 
1353
1355
 	for (i = 0; i < nodes; i++) {
1354
1356
 		new_nodes[i] = btree_node_alloc_replacement(r[i].b, NULL);
1355
-		if (IS_ERR_OR_NULL(new_nodes[i]))
1357
+		if (IS_ERR(new_nodes[i]))
1356
1358
 			goto out_nocoalesce;
1357
1359
 	}
1358
1360
 
..
..
@@ -1487,7 +1489,7 @@
1487
1489
 	bch_keylist_free(&keylist);
1488
1490
 
1489
1491
 	for (i = 0; i < nodes; i++)
1490
-		if (!IS_ERR_OR_NULL(new_nodes[i])) {
1492
+		if (!IS_ERR(new_nodes[i])) {
1491
1493
 			btree_node_free(new_nodes[i]);
1492
1494
 			rw_unlock(true, new_nodes[i]);
1493
1495
 		}
..
..
@@ -1669,7 +1671,7 @@
1669
1671
 	if (should_rewrite) {
1670
1672
 		n = btree_node_alloc_replacement(b, NULL);
1671
1673
 
1672
-		if (!IS_ERR_OR_NULL(n)) {
1674
+		if (!IS_ERR(n)) {
1673
1675
 			bch_btree_node_write_sync(n);
1674
1676
 
1675
1677
 			bch_btree_set_root(n);
..
..
@@ -1968,6 +1970,15 @@
1968
1970
 			c->gc_stats.nodes++;
1969
1971
 			bch_btree_op_init(&op, 0);
1970
1972
 			ret = bcache_btree(check_recurse, p, c->root, &op);
1973
+			/*
1974
+			 * The op may be added to cache_set's btree_cache_wait
1975
+			 * in mca_cannibalize(), must ensure it is removed from
1976
+			 * the list and release btree_cache_alloc_lock before
1977
+			 * free op memory.
1978
+			 * Otherwise, the btree_cache_wait will be damaged.
1979
+			 */
1980
+			bch_cannibalize_unlock(c);
1981
+			finish_wait(&c->btree_cache_wait, &(&op)->wait);
1971
1982
 			if (ret)
1972
1983
 				goto out;
1973
1984
 		}