3 files changed, 8 insertions, 0 deletions
diff --git a/lib/libzfs/os/freebsd/libzfs_zmount.c b/lib/libzfs/os/freebsd/libzfs_zmount.c
index 12317fdde..79a8fe111 100644
--- a/lib/libzfs/os/freebsd/libzfs_zmount.c
+++ b/lib/libzfs/os/freebsd/libzfs_zmount.c
@@ -123,6 +123,7 @@ do_mount(zfs_handle_t *zhp, const char *mntpt, char *opts, int flags)
 int
 do_unmount(zfs_handle_t *zhp, const char *mntpt, int flags)
 {
+	(void) zhp;
 	if (unmount(mntpt, flags) < 0)
 		return (errno);
 	return (0);
@@ -138,10 +139,12 @@ zfs_mount_delegation_check(void)
 void
 zpool_disable_datasets_os(zpool_handle_t *zhp, boolean_t force)
 {
+	(void) zhp, (void) force;
 }
 
 /* Called from the tail end of zfs_unmount() */
 void
 zpool_disable_volume_os(const char *name)
 {
+	(void) name;
 }
diff --git a/lib/libzfs/os/linux/libzfs_mount_os.c b/lib/libzfs/os/linux/libzfs_mount_os.c
index 29fea736b..e4fe8181b 100644
--- a/lib/libzfs/os/linux/libzfs_mount_os.c
+++ b/lib/libzfs/os/linux/libzfs_mount_os.c
@@ -376,6 +376,8 @@ do_mount(zfs_handle_t *zhp, const char *mntpt, char *opts, int flags)
 int
 do_unmount(zfs_handle_t *zhp, const char *mntpt, int flags)
 {
+	(void) zhp;
+
 	if (!libzfs_envvar_is_set("ZFS_MOUNT_HELPER")) {
 		int rv = umount2(mntpt, flags);
 
@@ -416,10 +418,12 @@ zfs_mount_delegation_check(void)
 void
 zpool_disable_datasets_os(zpool_handle_t *zhp, boolean_t force)
 {
+	(void) zhp, (void) force;
 }
 
 /* Called from the tail end of zfs_unmount() */
 void
 zpool_disable_volume_os(const char *name)
 {
+	(void) name;
 }
diff --git a/lib/libzfs/os/linux/libzfs_util_os.c b/lib/libzfs/os/linux/libzfs_util_os.c
index 2ac31f107..a32aa1513 100644
--- a/lib/libzfs/os/linux/libzfs_util_os.c
+++ b/lib/libzfs/os/linux/libzfs_util_os.c
@@ -187,6 +187,7 @@ find_shares_object(differ_info_t *di)
 int
 zfs_destroy_snaps_nvl_os(libzfs_handle_t *hdl, nvlist_t *snaps)
 {
+	(void) hdl, (void) snaps;
 	return (0);
 }