diff --git a/module/os/linux/zfs/abd_os.c b/module/os/linux/zfs/abd_os.c
index a8f1ea7ca..372c1dadc 100644
--- a/module/os/linux/zfs/abd_os.c
+++ b/module/os/linux/zfs/abd_os.c
@@ -205,6 +205,7 @@ abd_alloc_struct_impl(size_t size)
 	 * In Linux we do not use the size passed in during ABD
 	 * allocation, so we just ignore it.
 	 */
+	(void) size;
 	abd_t *abd = kmem_cache_alloc(abd_cache, KM_PUSHPAGE);
 	ASSERT3P(abd, !=, NULL);
 	ABDSTAT_INCR(abdstat_struct_size, sizeof (abd_t));
@@ -838,6 +839,7 @@ abd_t *
 abd_get_offset_scatter(abd_t *abd, abd_t *sabd, size_t off,
     size_t size)
 {
+	(void) size;
 	int i = 0;
 	struct scatterlist *sg = NULL;
 
diff --git a/module/os/linux/zfs/arc_os.c b/module/os/linux/zfs/arc_os.c
index f96cd1271..3dc0b7106 100644
--- a/module/os/linux/zfs/arc_os.c
+++ b/module/os/linux/zfs/arc_os.c
@@ -398,11 +398,11 @@ param_set_arc_int(const char *buf, zfs_kernel_param_t *kp)
 }
 
 #ifdef CONFIG_MEMORY_HOTPLUG
-/* ARGSUSED */
 static int
 arc_hotplug_callback(struct notifier_block *self, unsigned long action,
     void *arg)
 {
+	(void) self, (void) arg;
 	uint64_t allmem = arc_all_memory();
 	if (action != MEM_ONLINE)
 		return (NOTIFY_OK);
@@ -458,6 +458,7 @@ arc_available_memory(void)
 int
 arc_memory_throttle(spa_t *spa, uint64_t reserve, uint64_t txg)
 {
+	(void) spa, (void) reserve, (void) txg;
 	return (0);
 }
 
diff --git a/module/os/linux/zfs/zfs_debug.c b/module/os/linux/zfs/zfs_debug.c
index 98c9923d5..a32a4663e 100644
--- a/module/os/linux/zfs/zfs_debug.c
+++ b/module/os/linux/zfs/zfs_debug.c
@@ -84,6 +84,7 @@ zfs_dbgmsg_purge(int max_size)
 static int
 zfs_dbgmsg_clear(procfs_list_t *procfs_list)
 {
+	(void) procfs_list;
 	mutex_enter(&zfs_dbgmsgs.pl_lock);
 	zfs_dbgmsg_purge(0);
 	mutex_exit(&zfs_dbgmsgs.pl_lock);