From 6751909838c0840663af486e021b211990d17ef4 Mon Sep 17 00:00:00 2001
From: John Levon <john.levon@nutanix.com>
Date: Thu, 2 Sep 2021 10:30:13 +0000
Subject: [PATCH] bdev/iscsi: unregister conn poller when idle

There's no need to keep polling with iscsi_bdev_conn_poll() when the request
list is empty, as new requests already restart the poller when needed.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: Iec5553f8c14d32e894989c9f7a448b6817a821b1
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9375
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 module/bdev/iscsi/bdev_iscsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/module/bdev/iscsi/bdev_iscsi.c b/module/bdev/iscsi/bdev_iscsi.c
index c811d65b6..d8e288440 100644
--- a/module/bdev/iscsi/bdev_iscsi.c
+++ b/module/bdev/iscsi/bdev_iscsi.c
@@ -839,6 +839,7 @@ iscsi_bdev_conn_poll(void *arg)
 	struct iscsi_context *context;
 
 	if (TAILQ_EMPTY(&g_iscsi_conn_req)) {
+		spdk_poller_unregister(&g_conn_poller);
 		return SPDK_POLLER_IDLE;
 	}