[Tarantool-patches] [PATCH 06/10] box/txn: unweave txn_commit from txn_commit_async

[Cyrill Gorcunov <gorcunov@gmail.com>]

We gonna divergence sync and async code flow thus
lets make txn_commit to not use txn_commit_async.

Fixes #4031

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 src/box/txn.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/box/txn.c b/src/box/txn.c
index bee43a066..1c0143703 100644
--- a/src/box/txn.c
+++ b/src/box/txn.c
@@ -604,10 +604,24 @@ txn_commit_async(struct txn *txn)
 int
 txn_commit(struct txn *txn)
 {
+	int res = -1;
+
 	txn->fiber = fiber();
 
-	if (txn_commit_async(txn) != 0)
+	if (txn_prepare(txn) != 0) {
+		txn_rollback(txn);
+		goto out;
+	}
+
+	if (txn_commit_nop(txn)) {
+		res = 0;
+		goto out;
+	}
+
+	fiber_set_txn(fiber(), NULL);
+	if (txn_write_to_wal(txn) != 0)
 		return -1;
+
 	/*
 	 * In case of non-yielding journal the transaction could already
 	 * be done and there is nothing to wait in such cases.
@@ -617,10 +631,11 @@ txn_commit(struct txn *txn)
 		fiber_yield();
 		fiber_set_cancellable(cancellable);
 	}
-	int res = txn->signature >= 0 ? 0 : -1;
+	res = txn->signature >= 0 ? 0 : -1;
 	if (res != 0)
 		diag_set(ClientError, ER_WAL_IO);
 
+out:
 	/* Synchronous transactions are freed by the calling fiber. */
 	txn_free(txn);
 	return res;
-- 
2.20.1