bcachefs: Don't use designated initializers for disk_accounting_pos

Not all compilers fully initialize these - they're not guaranteed to
because of the union shenanigans.

Fixes: koverstreet/bcachefs#844
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Author: Kent Overstreet

fs/bcachefs/buckets.c

@@ -666,9 +666,9 @@ static int bch2_trigger_stripe_ptr(struct btree_trans *trans,
 			stripe_blockcount_get(&s->v, p.ec.block) +
 			sectors);
 
-		struct disk_accounting_pos acc = {
-			.type = BCH_DISK_ACCOUNTING_replicas,
-		};
+		struct disk_accounting_pos acc;
+		memset(&acc, 0, sizeof(acc));
+		acc.type = BCH_DISK_ACCOUNTING_replicas;
 		bch2_bkey_to_replicas(&acc.replicas, bkey_i_to_s_c(&s->k_i));
 		acc.replicas.data_type = data_type;
 		ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, false);
@@ -704,9 +704,9 @@ static int bch2_trigger_stripe_ptr(struct btree_trans *trans,
 
 		m->block_sectors[p.ec.block] += sectors;
 
-		struct disk_accounting_pos acc = {
-			.type = BCH_DISK_ACCOUNTING_replicas,
-		};
+		struct disk_accounting_pos acc;
+		memset(&acc, 0, sizeof(acc));
+		acc.type = BCH_DISK_ACCOUNTING_replicas;
 		memcpy(&acc.replicas, &m->r.e, replicas_entry_bytes(&m->r.e));
 		gc_stripe_unlock(m);
 
@@ -734,12 +734,12 @@ static int __trigger_extent(struct btree_trans *trans,
 		: BCH_DATA_user;
 	int ret = 0;
 
-	struct disk_accounting_pos acc_replicas_key = {
-		.type			= BCH_DISK_ACCOUNTING_replicas,
-		.replicas.data_type	= data_type,
-		.replicas.nr_devs	= 0,
-		.replicas.nr_required	= 1,
-	};
+	struct disk_accounting_pos acc_replicas_key;
+	memset(&acc_replicas_key, 0, sizeof(acc_replicas_key));
+	acc_replicas_key.type = BCH_DISK_ACCOUNTING_replicas;
+	acc_replicas_key.replicas.data_type	= data_type;
+	acc_replicas_key.replicas.nr_devs	= 0;
+	acc_replicas_key.replicas.nr_required	= 1;
 
 	unsigned cur_compression_type = 0;
 	u64 compression_acct[3] = { 1, 0, 0 };

fs/bcachefs/chardev.c

@@ -426,10 +426,8 @@ static long bch2_ioctl_fs_usage(struct bch_fs *c,
 	arg.replica_entries_bytes = replicas.nr;
 
 	for (unsigned i = 0; i < BCH_REPLICAS_MAX; i++) {
-		struct disk_accounting_pos k = {
-			.type = BCH_DISK_ACCOUNTING_persistent_reserved,
-			.persistent_reserved.nr_replicas = i,
-		};
+		struct disk_accounting_pos k;
+		disk_accounting_key_init(k, persistent_reserved, .nr_replicas = i);
 
 		bch2_accounting_mem_read(c,
 					 disk_accounting_pos_to_bpos(&k),

fs/bcachefs/disk_accounting.c

@@ -114,10 +114,9 @@ int bch2_mod_dev_cached_sectors(struct btree_trans *trans,
 				unsigned dev, s64 sectors,
 				bool gc)
 {
-	struct disk_accounting_pos acc = {
-		.type = BCH_DISK_ACCOUNTING_replicas,
-	};
-
+	struct disk_accounting_pos acc;
+	memset(&acc, 0, sizeof(acc));
+	acc.type = BCH_DISK_ACCOUNTING_replicas;
 	bch2_replicas_entry_cached(&acc.replicas, dev);
 
 	return bch2_disk_accounting_mod(trans, &acc, &sectors, 1, gc);
@@ -737,7 +736,9 @@ int bch2_accounting_read(struct bch_fs *c)
 				break;
 
 			if (!bch2_accounting_is_mem(acc_k)) {
-				struct disk_accounting_pos next = { .type = acc_k.type + 1 };
+				struct disk_accounting_pos next;
+				memset(&next, 0, sizeof(next));
+				next.type = acc_k.type + 1;
 				bch2_btree_iter_set_pos(&iter, disk_accounting_pos_to_bpos(&next));
 				continue;
 			}
@@ -893,15 +894,13 @@ int bch2_dev_usage_remove(struct bch_fs *c, unsigned dev)
 int bch2_dev_usage_init(struct bch_dev *ca, bool gc)
 {
 	struct bch_fs *c = ca->fs;
-	struct disk_accounting_pos acc = {
-		.type = BCH_DISK_ACCOUNTING_dev_data_type,
-		.dev_data_type.dev = ca->dev_idx,
-		.dev_data_type.data_type = BCH_DATA_free,
-	};
 	u64 v[3] = { ca->mi.nbuckets - ca->mi.first_bucket, 0, 0 };
 
 	int ret = bch2_trans_do(c, ({
-		bch2_disk_accounting_mod(trans, &acc, v, ARRAY_SIZE(v), gc) ?:
+		bch2_disk_accounting_mod2(trans, gc,
+					  v, dev_data_type,
+					  .dev = ca->dev_idx,
+					  .data_type = BCH_DATA_free) ?:
 		(!gc ? bch2_trans_commit(trans, NULL, NULL, 0) : 0);
 	}));
 	bch_err_fn(c, ret);
@@ -928,7 +927,9 @@ void bch2_verify_accounting_clean(struct bch_fs *c)
 				break;
 
 			if (!bch2_accounting_is_mem(acc_k)) {
-				struct disk_accounting_pos next = { .type = acc_k.type + 1 };
+				struct disk_accounting_pos next;
+				memset(&next, 0, sizeof(next));
+				next.type = acc_k.type + 1;
 				bch2_btree_iter_set_pos(&iter, disk_accounting_pos_to_bpos(&next));
 				continue;
 			}

fs/bcachefs/ec.c

@@ -453,9 +453,9 @@ int bch2_trigger_stripe(struct btree_trans *trans,
 		if (new_s) {
 			s64 sectors = (u64) le16_to_cpu(new_s->sectors) * new_s->nr_redundant;
 
-			struct disk_accounting_pos acc = {
-				.type = BCH_DISK_ACCOUNTING_replicas,
-			};
+			struct disk_accounting_pos acc;
+			memset(&acc, 0, sizeof(acc));
+			acc.type = BCH_DISK_ACCOUNTING_replicas;
 			bch2_bkey_to_replicas(&acc.replicas, new);
 			int ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, gc);
 			if (ret)
@@ -468,9 +468,9 @@ int bch2_trigger_stripe(struct btree_trans *trans,
 		if (old_s) {
 			s64 sectors = -((s64) le16_to_cpu(old_s->sectors)) * old_s->nr_redundant;
 
-			struct disk_accounting_pos acc = {
-				.type = BCH_DISK_ACCOUNTING_replicas,
-			};
+			struct disk_accounting_pos acc;
+			memset(&acc, 0, sizeof(acc));
+			acc.type = BCH_DISK_ACCOUNTING_replicas;
 			bch2_bkey_to_replicas(&acc.replicas, old);
 			int ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, gc);
 			if (ret)
@@ -2110,14 +2110,14 @@ static int bch2_invalidate_stripe_to_dev(struct btree_trans *trans, struct bkey_
 	if (ret)
 		return ret;
 
-	struct disk_accounting_pos acc = {
-		.type = BCH_DISK_ACCOUNTING_replicas,
-	};
+	struct disk_accounting_pos acc;
 
 	s64 sectors = 0;
 	for (unsigned i = 0; i < s->v.nr_blocks; i++)
 		sectors -= stripe_blockcount_get(&s->v, i);
 
+	memset(&acc, 0, sizeof(acc));
+	acc.type = BCH_DISK_ACCOUNTING_replicas;
 	bch2_bkey_to_replicas(&acc.replicas, bkey_i_to_s_c(&s->k_i));
 	acc.replicas.data_type = BCH_DATA_user;
 	ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, false);
@@ -2131,6 +2131,8 @@ static int bch2_invalidate_stripe_to_dev(struct btree_trans *trans, struct bkey_
 
 	sectors = -sectors;
 
+	memset(&acc, 0, sizeof(acc));
+	acc.type = BCH_DISK_ACCOUNTING_replicas;
 	bch2_bkey_to_replicas(&acc.replicas, bkey_i_to_s_c(&s->k_i));
 	acc.replicas.data_type = BCH_DATA_user;
 	ret = bch2_disk_accounting_mod(trans, &acc, &sectors, 1, false);

fs/bcachefs/progress.c

@@ -16,10 +16,8 @@ void bch2_progress_init(struct progress_indicator_state *s,
 		if (!(btree_id_mask & BIT_ULL(i)))
 			continue;
 
-		struct disk_accounting_pos acc = {
-			.type		= BCH_DISK_ACCOUNTING_btree,
-			.btree.id	= i,
-		};
+		struct disk_accounting_pos acc;
+		disk_accounting_key_init(acc, btree, .id = i);
 
 		u64 v;
 		bch2_accounting_mem_read(c, disk_accounting_pos_to_bpos(&acc), &v, 1);

fs/bcachefs/rebalance.c

@@ -600,7 +600,8 @@ void bch2_rebalance_status_to_text(struct printbuf *out, struct bch_fs *c)
 	struct bch_fs_rebalance *r = &c->rebalance;
 
 	/* print pending work */
-	struct disk_accounting_pos acc = { .type = BCH_DISK_ACCOUNTING_rebalance_work, };
+	struct disk_accounting_pos acc;
+	disk_accounting_key_init(acc, rebalance_work);
 	u64 v;
 	bch2_accounting_mem_read(c, disk_accounting_pos_to_bpos(&acc), &v, 1);
 

fs/bcachefs/sysfs.c

@@ -257,10 +257,8 @@ static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c
 	prt_printf(out, "type\tcompressed\runcompressed\raverage extent size\r\n");
 
 	for (unsigned i = 1; i < BCH_COMPRESSION_TYPE_NR; i++) {
-		struct disk_accounting_pos a = {
-			.type			= BCH_DISK_ACCOUNTING_compression,
-			.compression.type	= i,
-		};
+		struct disk_accounting_pos a;
+		disk_accounting_key_init(a, compression, .type = i);
 		struct bpos p = disk_accounting_pos_to_bpos(&a);
 		u64 v[3];
 		bch2_accounting_mem_read(c, p, v, ARRAY_SIZE(v));