diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index a23400f..44f72c0 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -289,6 +289,17 @@ xfs_trans_alloc(
 	tp->t_firstblock = NULLFSBLOCK;
 
 	error = xfs_trans_reserve(tp, resp, blocks, rtextents);
+	if (error == -ENOSPC) {
+		/*
+		 * We weren't able to reserve enough space for the transaction.
+		 * Flush the other speculative space allocations to free space.
+		 * Do not perform a synchronous scan because callers can hold
+		 * other locks.
+		 */
+		error = xfs_blockgc_free_space(mp, NULL);
+		if (!error)
+			error = xfs_trans_reserve(tp, resp, blocks, rtextents);
+	}
 	if (error) {
 		xfs_trans_cancel(tp);
 		return error;