diff --git a/include/types/wlr_subcompositor.h b/include/types/wlr_subcompositor.h
new file mode 100644
index 00000000..fe2ab69d
--- /dev/null
+++ b/include/types/wlr_subcompositor.h
@@ -0,0 +1,8 @@
+#ifndef TYPES_WLR_SUBCOMPOSITOR_H
+#define TYPES_WLR_SUBCOMPOSITOR_H
+
+#include <wlr/types/wlr_subcompositor.h>
+
+void subsurface_handle_parent_commit(struct wlr_subsurface *subsurface);
+
+#endif
diff --git a/types/wlr_compositor.c b/types/wlr_compositor.c
index f6bbcd02..03acb6ec 100644
--- a/types/wlr_compositor.c
+++ b/types/wlr_compositor.c
@@ -12,6 +12,7 @@
 #include <wlr/util/region.h>
 #include "types/wlr_buffer.h"
 #include "types/wlr_region.h"
+#include "types/wlr_subcompositor.h"
 #include "util/time.h"
 
 #define COMPOSITOR_VERSION 5
@@ -405,8 +406,6 @@ static void surface_update_input_region(struct wlr_surface *surface) {
 
 static void surface_state_init(struct wlr_surface_state *state);
 
-static void subsurface_parent_commit(struct wlr_subsurface *subsurface);
-
 static void surface_cache_pending(struct wlr_surface *surface) {
 	struct wlr_surface_state *cached = calloc(1, sizeof(*cached));
 	if (!cached) {
@@ -468,7 +467,7 @@ static void surface_commit_state(struct wlr_surface *surface,
 		wl_list_insert(&surface->current.subsurfaces_above,
 			&subsurface->current.link);
 
-		subsurface_parent_commit(subsurface);
+		subsurface_handle_parent_commit(subsurface);
 	}
 	wl_list_for_each_reverse(subsurface, &surface->pending.subsurfaces_below,
 			pending.link) {
@@ -476,7 +475,7 @@ static void surface_commit_state(struct wlr_surface *surface,
 		wl_list_insert(&surface->current.subsurfaces_below,
 			&subsurface->current.link);
 
-		subsurface_parent_commit(subsurface);
+		subsurface_handle_parent_commit(subsurface);
 	}
 
 	// If we're committing the pending state, bump the pending sequence number
@@ -492,47 +491,6 @@ static void surface_commit_state(struct wlr_surface *surface,
 	wl_signal_emit_mutable(&surface->events.commit, surface);
 }
 
-static void collect_subsurface_damage_iter(struct wlr_surface *surface,
-		int sx, int sy, void *data) {
-	struct wlr_subsurface *subsurface = data;
-	pixman_region32_t *damage = &subsurface->parent->external_damage;
-	pixman_region32_union_rect(damage, damage,
-		subsurface->current.x + sx,
-		subsurface->current.y + sy,
-		surface->current.width, surface->current.height);
-}
-
-// TODO: untangle from wlr_surface
-static void subsurface_parent_commit(struct wlr_subsurface *subsurface) {
-	struct wlr_surface *surface = subsurface->surface;
-
-	bool moved = subsurface->current.x != subsurface->pending.x ||
-		subsurface->current.y != subsurface->pending.y;
-	if (subsurface->mapped && moved) {
-		wlr_surface_for_each_surface(surface,
-			collect_subsurface_damage_iter, subsurface);
-	}
-
-	if (subsurface->synchronized && subsurface->has_cache) {
-		wlr_surface_unlock_cached(surface, subsurface->cached_seq);
-		subsurface->has_cache = false;
-	}
-
-	subsurface->current.x = subsurface->pending.x;
-	subsurface->current.y = subsurface->pending.y;
-	if (subsurface->mapped && (moved || subsurface->reordered)) {
-		subsurface->reordered = false;
-		wlr_surface_for_each_surface(surface,
-			collect_subsurface_damage_iter, subsurface);
-	}
-
-	if (!subsurface->added) {
-		subsurface->added = true;
-		wl_signal_emit_mutable(&subsurface->parent->events.new_subsurface,
-			subsurface);
-	}
-}
-
 static void surface_handle_commit(struct wl_client *client,
 		struct wl_resource *resource) {
 	struct wlr_surface *surface = wlr_surface_from_resource(resource);
diff --git a/types/wlr_subcompositor.c b/types/wlr_subcompositor.c
index 530f7476..6ec8a397 100644
--- a/types/wlr_subcompositor.c
+++ b/types/wlr_subcompositor.c
@@ -4,6 +4,7 @@
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_subcompositor.h>
 #include "types/wlr_region.h"
+#include "types/wlr_subcompositor.h"
 
 #define SUBCOMPOSITOR_VERSION 1
 
@@ -329,6 +330,46 @@ static void subsurface_handle_surface_client_commit(
 	}
 }
 
+static void collect_damage_iter(struct wlr_surface *surface,
+		int sx, int sy, void *data) {
+	struct wlr_subsurface *subsurface = data;
+	pixman_region32_t *damage = &subsurface->parent->external_damage;
+	pixman_region32_union_rect(damage, damage,
+		subsurface->current.x + sx,
+		subsurface->current.y + sy,
+		surface->current.width, surface->current.height);
+}
+
+void subsurface_handle_parent_commit(struct wlr_subsurface *subsurface) {
+	struct wlr_surface *surface = subsurface->surface;
+
+	bool moved = subsurface->current.x != subsurface->pending.x ||
+		subsurface->current.y != subsurface->pending.y;
+	if (subsurface->mapped && moved) {
+		wlr_surface_for_each_surface(surface,
+			collect_damage_iter, subsurface);
+	}
+
+	if (subsurface->synchronized && subsurface->has_cache) {
+		wlr_surface_unlock_cached(surface, subsurface->cached_seq);
+		subsurface->has_cache = false;
+	}
+
+	subsurface->current.x = subsurface->pending.x;
+	subsurface->current.y = subsurface->pending.y;
+	if (subsurface->mapped && (moved || subsurface->reordered)) {
+		subsurface->reordered = false;
+		wlr_surface_for_each_surface(surface,
+			collect_damage_iter, subsurface);
+	}
+
+	if (!subsurface->added) {
+		subsurface->added = true;
+		wl_signal_emit_mutable(&subsurface->parent->events.new_subsurface,
+			subsurface);
+	}
+}
+
 static struct wlr_subsurface *subsurface_create(struct wlr_surface *surface,
 		struct wlr_surface *parent, uint32_t version, uint32_t id) {
 	struct wl_client *client = wl_resource_get_client(surface->resource);