diff --git a/fs_mgr/fs_mgr_overlayfs.cpp b/fs_mgr/fs_mgr_overlayfs.cpp
index 57762e6..2ef3068 100644
--- a/fs_mgr/fs_mgr_overlayfs.cpp
+++ b/fs_mgr/fs_mgr_overlayfs.cpp
@@ -68,10 +68,7 @@
 namespace {
 
 bool fs_mgr_access(const std::string& path) {
-    auto save_errno = errno;
-    auto ret = access(path.c_str(), F_OK) == 0;
-    errno = save_errno;
-    return ret;
+    return access(path.c_str(), F_OK) == 0;
 }
 
 // determine if a filesystem is available
@@ -147,10 +144,7 @@
     // is not well-defined. In this case, just return false as being in recovery
     // implies not running a DSU system.
     if (fs_mgr_in_recovery()) return false;
-    auto saved_errno = errno;
-    auto ret = android::gsi::IsGsiRunning();
-    errno = saved_errno;
-    return ret;
+    return android::gsi::IsGsiRunning();
 }
 
 // list of acceptable overlayfs backing storage
@@ -193,9 +187,8 @@
     // If we have access issues to find out space remaining, return true
     // to prevent us trying to override with overlayfs.
     struct statvfs vst;
-    auto save_errno = errno;
     if (statvfs(mount_point.c_str(), &vst)) {
-        errno = save_errno;
+        PLOG(ERROR) << "statvfs " << mount_point;
         return true;
     }
 
@@ -256,26 +249,21 @@
     }
 
     // check if ext4 de-dupe
-    auto save_errno = errno;
     auto has_shared_blocks = fs_mgr_has_shared_blocks(entry->mount_point, entry->blk_device);
     if (!has_shared_blocks && (entry->mount_point == "/system")) {
         has_shared_blocks = fs_mgr_has_shared_blocks("/", entry->blk_device);
     }
-    errno = save_errno;
     return has_shared_blocks;
 }
 
 bool fs_mgr_rm_all(const std::string& path, bool* change = nullptr, int level = 0) {
-    auto save_errno = errno;
     std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(path.c_str()), closedir);
     if (!dir) {
         if (errno == ENOENT) {
-            errno = save_errno;
             return true;
         }
         PERROR << "opendir " << path << " depth=" << level;
         if ((errno == EPERM) && (level != 0)) {
-            errno = save_errno;
             return true;
         }
         return false;
@@ -287,9 +275,7 @@
         auto file = path + "/" + entry->d_name;
         if (entry->d_type == DT_UNKNOWN) {
             struct stat st;
-            save_errno = errno;
             if (!lstat(file.c_str(), &st) && (st.st_mode & S_IFDIR)) entry->d_type = DT_DIR;
-            errno = save_errno;
         }
         if (entry->d_type == DT_DIR) {
             ret &= fs_mgr_rm_all(file, change, level + 1);
@@ -363,10 +349,7 @@
 
 bool fs_mgr_rw_access(const std::string& path) {
     if (path.empty()) return false;
-    auto save_errno = errno;
-    auto ret = access(path.c_str(), R_OK | W_OK) == 0;
-    errno = save_errno;
-    return ret;
+    return access(path.c_str(), R_OK | W_OK) == 0;
 }
 
 constexpr char kOverlayfsFileContext[] = "u:object_r:overlayfs_file:s0";
@@ -481,30 +464,33 @@
     return false;
 }
 
-void fs_mgr_overlayfs_umount_scratch() {
-    // Lazy umount will allow us to move on and possibly later
-    // establish a new fresh mount without requiring a reboot should
-    // the developer wish to restart.  Old references should melt
-    // away or have no data.  Main goal is to shut the door on the
-    // current overrides with an expectation of a subsequent reboot,
-    // thus any errors here are ignored.
-    umount2(kScratchMountPoint.c_str(), MNT_DETACH);
-    LINFO << "umount(" << kScratchMountPoint << ")";
-    rmdir(kScratchMountPoint.c_str());
+// Returns true if immediate unmount succeeded and the scratch mount point was
+// removed.
+bool fs_mgr_overlayfs_umount_scratch() {
+    if (umount(kScratchMountPoint.c_str()) != 0) {
+        return false;
+    }
+    if (rmdir(kScratchMountPoint.c_str()) != 0 && errno != ENOENT) {
+        PLOG(ERROR) << "rmdir " << kScratchMountPoint;
+    }
+    return true;
 }
 
-bool fs_mgr_overlayfs_teardown_scratch(const std::string& overlay, bool* change) {
+OverlayfsTeardownResult fs_mgr_overlayfs_teardown_scratch(const std::string& overlay,
+                                                          bool* change) {
     // umount and delete kScratchMountPoint storage if we have logical partitions
-    if (overlay != kScratchMountPoint) return true;
+    if (overlay != kScratchMountPoint) {
+        return OverlayfsTeardownResult::Ok;
+    }
 
     // Validation check.
     if (fs_mgr_is_dsu_running()) {
         LERROR << "Destroying DSU scratch is not allowed.";
-        return false;
+        return OverlayfsTeardownResult::Error;
     }
 
-    auto save_errno = errno;
-    if (fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false)) {
+    bool was_mounted = fs_mgr_overlayfs_already_mounted(kScratchMountPoint, false);
+    if (was_mounted) {
         fs_mgr_overlayfs_umount_scratch();
     }
 
@@ -512,42 +498,55 @@
 
     auto images = IImageManager::Open("remount", 10s);
     if (images && images->BackingImageExists(partition_name)) {
-#if defined __ANDROID_RECOVERY__
         if (!images->DisableImage(partition_name)) {
-            return false;
+            return OverlayfsTeardownResult::Error;
         }
-#else
-        if (!images->UnmapImageIfExists(partition_name) ||
-            !images->DeleteBackingImage(partition_name)) {
-            return false;
+        if (was_mounted) {
+            // If overlayfs was mounted, don't bother trying to unmap since
+            // it'll fail and create error spam.
+            return OverlayfsTeardownResult::Busy;
         }
-#endif
+        if (!images->UnmapImageIfExists(partition_name)) {
+            return OverlayfsTeardownResult::Busy;
+        }
+        if (!images->DeleteBackingImage(partition_name)) {
+            return OverlayfsTeardownResult::Busy;
+        }
+
+        // No need to check super partition, if we knew we had a scratch device
+        // in /data.
+        return OverlayfsTeardownResult::Ok;
     }
 
     auto slot_number = fs_mgr_overlayfs_slot_number();
     auto super_device = fs_mgr_overlayfs_super_device(slot_number);
-    if (!fs_mgr_rw_access(super_device)) return true;
+    if (!fs_mgr_rw_access(super_device)) {
+        return OverlayfsTeardownResult::Ok;
+    }
 
     auto builder = MetadataBuilder::New(super_device, slot_number);
     if (!builder) {
-        errno = save_errno;
-        return true;
+        return OverlayfsTeardownResult::Ok;
     }
     if (builder->FindPartition(partition_name) == nullptr) {
-        errno = save_errno;
-        return true;
+        return OverlayfsTeardownResult::Ok;
     }
     builder->RemovePartition(partition_name);
     auto metadata = builder->Export();
     if (metadata && UpdatePartitionTable(super_device, *metadata.get(), slot_number)) {
         if (change) *change = true;
-        if (!DestroyLogicalPartition(partition_name)) return false;
+        if (!DestroyLogicalPartition(partition_name)) {
+            return OverlayfsTeardownResult::Error;
+        }
     } else {
         LERROR << "delete partition " << overlay;
-        return false;
+        return OverlayfsTeardownResult::Error;
     }
-    errno = save_errno;
-    return true;
+
+    if (was_mounted) {
+        return OverlayfsTeardownResult::Busy;
+    }
+    return OverlayfsTeardownResult::Ok;
 }
 
 bool fs_mgr_overlayfs_teardown_one(const std::string& overlay, const std::string& mount_point,
@@ -565,27 +564,20 @@
     const auto newpath = cleanup_all ? overlay + "/." + kOverlayTopDir.substr(1) + ".teardown"
                                      : top + "/." + partition_name + ".teardown";
     auto ret = fs_mgr_rm_all(newpath);
-    auto save_errno = errno;
     if (!rename(oldpath.c_str(), newpath.c_str())) {
         if (change) *change = true;
     } else if (errno != ENOENT) {
         ret = false;
         PERROR << "mv " << oldpath << " " << newpath;
-    } else {
-        errno = save_errno;
     }
     ret &= fs_mgr_rm_all(newpath, change);
-    save_errno = errno;
     if (!rmdir(newpath.c_str())) {
         if (change) *change = true;
     } else if (errno != ENOENT) {
         ret = false;
         PERROR << "rmdir " << newpath;
-    } else {
-        errno = save_errno;
     }
     if (!cleanup_all) {
-        save_errno = errno;
         if (!rmdir(top.c_str())) {
             if (change) *change = true;
             cleanup_all = true;
@@ -604,10 +596,8 @@
                     }
                 }
             }
-            errno = save_errno;
         } else if (errno == ENOENT) {
             cleanup_all = true;
-            errno = save_errno;
         } else {
             ret = false;
             PERROR << "rmdir " << top;
@@ -718,7 +708,6 @@
     if (options.empty()) return false;
 
     auto retval = true;
-    auto save_errno = errno;
 
     struct move_entry {
         std::string mount_point;
@@ -761,7 +750,6 @@
         }
         if (!target) {
             retval = false;
-            save_errno = errno;
             PERROR << "temporary directory for MS_BIND";
             continue;
         }
@@ -774,7 +762,6 @@
         }
         if (!fs_mgr_overlayfs_move_mount(new_entry.mount_point, new_entry.dir)) {
             retval = false;
-            save_errno = errno;
             if (new_entry.shared_flag) {
                 fs_mgr_overlayfs_set_shared_mount(new_entry.mount_point, true);
             }
@@ -798,7 +785,6 @@
                      options.c_str());
     if (ret) {
         retval = false;
-        save_errno = errno;
         PERROR << report << ret;
     } else {
         LINFO << report << ret;
@@ -812,11 +798,9 @@
 
         if (!fs_mgr_overlayfs_move_mount(entry.dir, entry.mount_point)) {
             retval = false;
-            save_errno = errno;
         } else if (entry.shared_flag &&
                    !fs_mgr_overlayfs_set_shared_mount(entry.mount_point, true)) {
             retval = false;
-            save_errno = errno;
         }
         rmdir(entry.dir.c_str());
     }
@@ -827,7 +811,6 @@
         fs_mgr_overlayfs_set_shared_mount(mount_point, true);
     }
 
-    errno = save_errno;
     return retval;
 }
 
@@ -869,17 +852,6 @@
     entry.flags = MS_NOATIME | MS_RDONLY;
     auto mounted = true;
     if (!readonly) {
-        if (entry.fs_type == "ext4") {
-            // check if ext4 de-dupe
-            entry.flags |= MS_RDONLY;
-            auto save_errno = errno;
-            mounted = fs_mgr_do_mount_one(entry) == 0;
-            if (mounted) {
-                mounted = !fs_mgr_has_shared_blocks(entry.mount_point, entry.blk_device);
-                fs_mgr_overlayfs_umount_scratch();
-            }
-            errno = save_errno;
-        }
         entry.flags &= ~MS_RDONLY;
         entry.flags |= MS_SYNCHRONOUS;
         entry.fs_options = "nodiscard";
@@ -1246,7 +1218,10 @@
                 return true;
             }
             // declare it useless, no overrides and no free space
-            fs_mgr_overlayfs_umount_scratch();
+            if (!fs_mgr_overlayfs_umount_scratch()) {
+                LOG(ERROR) << "Unable to unmount scratch partition";
+                return false;
+            }
         }
     }
 
@@ -1548,12 +1523,38 @@
     return true;
 }
 
-// Returns false if teardown not permitted, errno set to last error.
-// If something is altered, set *change.
-bool fs_mgr_overlayfs_teardown(const char* mount_point, bool* change) {
-    if (change) *change = false;
-    auto ret = true;
+OverlayfsTeardownResult TeardownMountsAndScratch(const char* mount_point, bool* want_reboot) {
+    bool should_destroy_scratch = false;
+    auto rv = OverlayfsTeardownResult::Ok;
+    for (const auto& overlay_mount_point : OverlayMountPoints()) {
+        auto ok = fs_mgr_overlayfs_teardown_one(
+                overlay_mount_point, mount_point ? fs_mgr_mount_point(mount_point) : "",
+                want_reboot,
+                overlay_mount_point == kScratchMountPoint ? &should_destroy_scratch : nullptr);
+        if (!ok) {
+            rv = OverlayfsTeardownResult::Error;
+        }
+    }
 
+    // Do not attempt to destroy DSU scratch if within a DSU system,
+    // because DSU scratch partition is managed by gsid.
+    if (should_destroy_scratch && !fs_mgr_is_dsu_running()) {
+        auto rv = fs_mgr_overlayfs_teardown_scratch(kScratchMountPoint, want_reboot);
+        if (rv != OverlayfsTeardownResult::Ok) {
+            return rv;
+        }
+    }
+    // And now that we did what we could, lets inform
+    // caller that there may still be more to do.
+    if (!fs_mgr_boot_completed()) {
+        LOG(ERROR) << "Cannot teardown overlayfs before persistent properties are ready";
+        return OverlayfsTeardownResult::Error;
+    }
+    return rv;
+}
+
+// Returns false if teardown not permitted. If something is altered, set *want_reboot.
+OverlayfsTeardownResult fs_mgr_overlayfs_teardown(const char* mount_point, bool* want_reboot) {
     // If scratch exists, but is not mounted, lets gain access to clean
     // specific override entries.
     auto mount_scratch = false;
@@ -1564,34 +1565,15 @@
                                                            fs_mgr_overlayfs_scratch_mount_type());
         }
     }
-    bool should_destroy_scratch = false;
-    for (const auto& overlay_mount_point : OverlayMountPoints()) {
-        ret &= fs_mgr_overlayfs_teardown_one(
-                overlay_mount_point, mount_point ? fs_mgr_mount_point(mount_point) : "", change,
-                overlay_mount_point == kScratchMountPoint ? &should_destroy_scratch : nullptr);
-    }
-    // Do not attempt to destroy DSU scratch if within a DSU system,
-    // because DSU scratch partition is managed by gsid.
-    if (should_destroy_scratch && !fs_mgr_is_dsu_running()) {
-        ret &= fs_mgr_overlayfs_teardown_scratch(kScratchMountPoint, change);
-    }
-    if (fs_mgr_overlayfs_valid() == OverlayfsValidResult::kNotSupported) {
-        // After obligatory teardown to make sure everything is clean, but if
-        // we didn't want overlayfs in the first place, we do not want to
-        // waste time on a reboot (or reboot request message).
-        if (change) *change = false;
-    }
-    // And now that we did what we could, lets inform
-    // caller that there may still be more to do.
-    if (!fs_mgr_boot_completed()) {
-        errno = EBUSY;
-        PERROR << "teardown";
-        ret = false;
-    }
+
+    auto rv = TeardownMountsAndScratch(mount_point, want_reboot);
+
     if (mount_scratch) {
-        fs_mgr_overlayfs_umount_scratch();
+        if (!fs_mgr_overlayfs_umount_scratch()) {
+            return OverlayfsTeardownResult::Busy;
+        }
     }
-    return ret;
+    return rv;
 }
 
 bool fs_mgr_overlayfs_is_setup() {
@@ -1689,6 +1671,7 @@
         }
     }
 
+    // Note if we just disabled scratch, this mount will fail.
     if (auto info = EnsureScratchMapped(); info.has_value()) {
         // Map scratch device, mount kScratchMountPoint and teardown kScratchMountPoint.
         fs_mgr_overlayfs_umount_scratch();
@@ -1722,11 +1705,9 @@
 
 bool fs_mgr_overlayfs_already_mounted(const std::string& mount_point, bool overlay_only) {
     Fstab fstab;
-    auto save_errno = errno;
     if (!ReadFstabFromFile("/proc/mounts", &fstab)) {
         return false;
     }
-    errno = save_errno;
     const auto lowerdir = kLowerdirOption + mount_point;
     for (const auto& entry : fstab) {
         if (overlay_only && "overlay" != entry.fs_type && "overlayfs" != entry.fs_type) continue;
diff --git a/fs_mgr/include/fs_mgr_overlayfs.h b/fs_mgr/include/fs_mgr_overlayfs.h
index 590f66b..4d9b13f 100644
--- a/fs_mgr/include/fs_mgr_overlayfs.h
+++ b/fs_mgr/include/fs_mgr_overlayfs.h
@@ -28,7 +28,6 @@
 
 bool fs_mgr_wants_overlayfs(android::fs_mgr::FstabEntry* entry);
 bool fs_mgr_overlayfs_mount_all(android::fs_mgr::Fstab* fstab);
-bool fs_mgr_overlayfs_teardown(const char* mount_point = nullptr, bool* change = nullptr);
 bool fs_mgr_overlayfs_is_setup();
 bool fs_mgr_has_shared_blocks(const std::string& mount_point, const std::string& dev);
 bool fs_mgr_overlayfs_already_mounted(const std::string& mount_point, bool overlay_only = true);
@@ -42,6 +41,14 @@
 bool fs_mgr_overlayfs_setup(const char* mount_point = nullptr, bool* want_reboot = nullptr,
                             bool just_disabled_verity = true);
 
+enum class OverlayfsTeardownResult {
+    Ok,
+    Busy,  // Indicates that overlays are still in use.
+    Error
+};
+OverlayfsTeardownResult fs_mgr_overlayfs_teardown(const char* mount_point = nullptr,
+                                                  bool* want_reboot = nullptr);
+
 enum class OverlayfsValidResult {
     kNotSupported = 0,
     kOk,
diff --git a/fs_mgr/libfiemap/binder.cpp b/fs_mgr/libfiemap/binder.cpp
index 003e6ed..41e534a 100644
--- a/fs_mgr/libfiemap/binder.cpp
+++ b/fs_mgr/libfiemap/binder.cpp
@@ -195,9 +195,14 @@
     return true;
 }
 
-bool ImageManagerBinder::DisableImage(const std::string&) {
-    LOG(ERROR) << __PRETTY_FUNCTION__ << " is not available over binder";
-    return false;
+bool ImageManagerBinder::DisableImage(const std::string& name) {
+    auto status = manager_->disableImage(name);
+    if (!status.isOk()) {
+        LOG(ERROR) << __PRETTY_FUNCTION__
+                   << " binder returned: " << status.exceptionMessage().string();
+        return false;
+    }
+    return true;
 }
 
 bool ImageManagerBinder::RemoveDisabledImages() {
diff --git a/fs_mgr/libfiemap/include/libfiemap/image_manager.h b/fs_mgr/libfiemap/include/libfiemap/image_manager.h
index 00dd661..0619c96 100644
--- a/fs_mgr/libfiemap/include/libfiemap/image_manager.h
+++ b/fs_mgr/libfiemap/include/libfiemap/image_manager.h
@@ -112,9 +112,6 @@
 
     // Mark an image as disabled. This is useful for marking an image as
     // will-be-deleted in recovery, since recovery cannot mount /data.
-    //
-    // This is not available in binder, since it is intended for recovery.
-    // When binder is available, images can simply be removed.
     virtual bool DisableImage(const std::string& name) = 0;
 
     // Remove all images that been marked as disabled.
diff --git a/fs_mgr/libsnapshot/vts_ota_config_test.cpp b/fs_mgr/libsnapshot/vts_ota_config_test.cpp
old mode 100644
new mode 100755
index 02bcc34..d387eb3
--- a/fs_mgr/libsnapshot/vts_ota_config_test.cpp
+++ b/fs_mgr/libsnapshot/vts_ota_config_test.cpp
@@ -22,6 +22,9 @@
 }
 
 TEST(VAB, Enabled) {
+    if (!android::base::GetBoolProperty("ro.build.ab_update", false) && (GetVsrLevel() < __ANDROID_API_T__)) {
+        GTEST_SKIP();
+    }
     ASSERT_TRUE(android::base::GetBoolProperty("ro.virtual_ab.enabled", false));
     if (GetVsrLevel() < __ANDROID_API_T__) {
         GTEST_SKIP();
diff --git a/healthd/healthd_draw.cpp b/healthd/healthd_draw.cpp
index 3e73fcd..7c79319 100644
--- a/healthd/healthd_draw.cpp
+++ b/healthd/healthd_draw.cpp
@@ -99,7 +99,7 @@
     gr_fb_blank(blank, drm);
 }
 
-/* support screen rotation for foldable phone */
+// support screen rotation for foldable phone
 void HealthdDraw::rotate_screen(int drm) {
     if (!graphics_available) return;
     if (drm == 0)
@@ -108,6 +108,11 @@
         gr_rotate(GRRotation::NONE /* Portrait mode */);
 }
 
+// detect dual display
+bool HealthdDraw::has_multiple_connectors() {
+    return graphics_available && gr_has_multiple_connectors();
+}
+
 void HealthdDraw::clear_screen(void) {
     if (!graphics_available) return;
     gr_color(0, 0, 0, 255);
diff --git a/healthd/healthd_draw.h b/healthd/healthd_draw.h
index 3d4abbd..016db8e 100644
--- a/healthd/healthd_draw.h
+++ b/healthd/healthd_draw.h
@@ -38,6 +38,9 @@
   // Rotate screen.
   virtual void rotate_screen(int drm);
 
+  // Detect dual display
+  virtual bool has_multiple_connectors();
+
   static std::unique_ptr<HealthdDraw> Create(animation *anim);
 
  protected:
diff --git a/healthd/healthd_mode_charger.cpp b/healthd/healthd_mode_charger.cpp
index e305a86..1ce174b 100644
--- a/healthd/healthd_mode_charger.cpp
+++ b/healthd/healthd_mode_charger.cpp
@@ -289,6 +289,18 @@
     anim->run = false;
 }
 
+void Charger::BlankSecScreen() {
+    int drm = drm_ == DRM_INNER ? 1 : 0;
+
+    if (!init_screen_) {
+        /* blank the secondary screen */
+        healthd_draw_->blank_screen(false, drm);
+        healthd_draw_->redraw_screen(&batt_anim_, surf_unknown_);
+        healthd_draw_->blank_screen(true, drm);
+        init_screen_ = true;
+    }
+}
+
 void Charger::UpdateScreenState(int64_t now) {
     int disp_time;
 
@@ -315,6 +327,9 @@
         reset_animation(&batt_anim_);
         next_screen_transition_ = -1;
         healthd_draw_->blank_screen(true, static_cast<int>(drm_));
+        if (healthd_draw_->has_multiple_connectors()) {
+            BlankSecScreen();
+        }
         screen_blanked_ = true;
         LOGV("[%" PRId64 "] animation done\n", now);
         if (configuration_->ChargerIsOnline()) {
diff --git a/healthd/include_charger/charger/healthd_mode_charger.h b/healthd/include_charger/charger/healthd_mode_charger.h
index 82e4ddf..c463b92 100644
--- a/healthd/include_charger/charger/healthd_mode_charger.h
+++ b/healthd/include_charger/charger/healthd_mode_charger.h
@@ -108,9 +108,11 @@
     void InitAnimation();
     int RequestEnableSuspend();
     int RequestDisableSuspend();
+    void BlankSecScreen();
 
     bool have_battery_state_ = false;
     bool screen_blanked_ = false;
+    bool init_screen_ = false;
     int64_t next_screen_transition_ = 0;
     int64_t next_key_check_ = 0;
     int64_t next_pwr_check_ = 0;
diff --git a/set-verity-state/set-verity-state.cpp b/set-verity-state/set-verity-state.cpp
index 3c0df79..2b9c0ca 100644
--- a/set-verity-state/set-verity-state.cpp
+++ b/set-verity-state/set-verity-state.cpp
@@ -47,6 +47,33 @@
 const bool kAllowDisableVerity = false;
 #endif
 
+static bool SetupOrTeardownOverlayfs(bool enable) {
+  bool want_reboot = false;
+  if (enable) {
+    if (!fs_mgr_overlayfs_setup(nullptr, &want_reboot)) {
+      LOG(ERROR) << "Overlayfs setup failed.";
+      return want_reboot;
+    }
+    if (want_reboot) {
+      printf("enabling overlayfs\n");
+    }
+  } else {
+    auto rv = fs_mgr_overlayfs_teardown(nullptr, &want_reboot);
+    if (rv == OverlayfsTeardownResult::Error) {
+      LOG(ERROR) << "Overlayfs teardown failed.";
+      return want_reboot;
+    }
+    if (rv == OverlayfsTeardownResult::Busy) {
+      LOG(ERROR) << "Overlayfs is still active until reboot.";
+      return true;
+    }
+    if (want_reboot) {
+      printf("disabling overlayfs\n");
+    }
+  }
+  return want_reboot;
+}
+
 /* Helper function to get A/B suffix, if any. If the device isn't
  * using A/B the empty string is returned. Otherwise either "_a",
  * "_b", ... is returned.
@@ -79,20 +106,6 @@
   ::exit(1);
 }
 
-bool overlayfs_setup(bool enable) {
-  auto want_reboot = false;
-  errno = 0;
-  if (enable ? fs_mgr_overlayfs_setup(nullptr, &want_reboot)
-             : fs_mgr_overlayfs_teardown(nullptr, &want_reboot)) {
-    if (want_reboot) {
-      LOG(INFO) << (enable ? "Enabled" : "Disabled") << " overlayfs";
-    }
-  } else {
-    LOG(ERROR) << "Failed to " << (enable ? "enable" : "disable") << " overlayfs";
-  }
-  return want_reboot;
-}
-
 struct SetVerityStateResult {
   bool success = false;
   bool want_reboot = false;
@@ -229,7 +242,7 @@
     // Start a threadpool to service waitForService() callbacks as
     // fs_mgr_overlayfs_* might call waitForService() to get the image service.
     android::ProcessState::self()->startThreadPool();
-    want_reboot |= overlayfs_setup(!enable_verity);
+    want_reboot |= SetupOrTeardownOverlayfs(!enable_verity);
   }
 
   if (want_reboot) {