From f71296707914ab6f3a503c4c7485f9d8ae7e8a45 Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Tue, 1 Feb 2022 02:50:16 +0300
Subject: [PATCH] And one more sqe starvation fix

---
 src/ringloop.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/ringloop.cpp b/src/ringloop.cpp
index 1e39b3576..1060b7b43 100644
--- a/src/ringloop.cpp
+++ b/src/ringloop.cpp
@@ -118,5 +118,11 @@ int ring_loop_t::sqes_left()
     struct io_uring_sq *sq = &ring.sq;
     unsigned int head = io_uring_smp_load_acquire(sq->khead);
     unsigned int next = sq->sqe_tail + 1;
-    return *sq->kring_entries - (next - head);
+    int left = *sq->kring_entries - (next - head);
+    if (left > free_ring_data_ptr)
+    {
+        // return min(sqes left, ring_datas left)
+        return free_ring_data_ptr;
+    }
+    return left;
 }