From e137881e4e86c9ffeea11088b7defcb9888166e8 Mon Sep 17 00:00:00 2001
From: Alexey Marchuk <alexeymar@mellanox.com>
Date: Fri, 10 Jul 2020 09:07:18 +0300
Subject: [PATCH] nvme/tcp: Insert free req at the head of the list

lifo model is more cache friendly

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: Id937ab0c1b8b4ce121136144c7d6013bbe5eb963
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/3282
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
---
 lib/nvme/nvme_tcp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/nvme/nvme_tcp.c b/lib/nvme/nvme_tcp.c
index 34395ca3a..912fca613 100644
--- a/lib/nvme/nvme_tcp.c
+++ b/lib/nvme/nvme_tcp.c
@@ -187,7 +187,7 @@ nvme_tcp_req_put(struct nvme_tcp_qpair *tqpair, struct nvme_tcp_req *tcp_req)
 {
 	assert(tcp_req->state != NVME_TCP_REQ_FREE);
 	tcp_req->state = NVME_TCP_REQ_FREE;
-	TAILQ_INSERT_TAIL(&tqpair->free_reqs, tcp_req, link);
+	TAILQ_INSERT_HEAD(&tqpair->free_reqs, tcp_req, link);
 }
 
 static int