https://bugs.gentoo.org/923745
https://github.com/openzfs/zfs/issues/15453
https://github.com/openzfs/zfs/pull/15781
https://github.com/openzfs/zfs/pull/15789

From a0aa7a2ee3b56d7b6d69c2081034ec8293a6d605 Mon Sep 17 00:00:00 2001
From: Kevin Jin <33590050+jxdking@users.noreply.github.com>
Date: Wed, 17 Jan 2024 12:03:58 -0500
Subject: [PATCH] Autotrim High Load Average Fix

Switch from cv_wait() to cv_wait_idle() in vdev_autotrim_wait_kick(),
which should mitigate the high load average while waiting.

Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: jxdking <lostking2008@hotmail.com>
Closes #15781
--- a/module/zfs/vdev_trim.c
+++ b/module/zfs/vdev_trim.c
@@ -194,7 +194,8 @@ vdev_autotrim_wait_kick(vdev_t *vd, int num_of_kick)
 	for (int i = 0; i < num_of_kick; i++) {
 		if (vd->vdev_autotrim_exit_wanted)
 			break;
-		cv_wait(&vd->vdev_autotrim_kick_cv, &vd->vdev_autotrim_lock);
+		cv_wait_idle(&vd->vdev_autotrim_kick_cv,
+		    &vd->vdev_autotrim_lock);
 	}
 	boolean_t exit_wanted = vd->vdev_autotrim_exit_wanted;
 	mutex_exit(&vd->vdev_autotrim_lock);