diff --git a/fs_mgr/fs_mgr_fstab.cpp b/fs_mgr/fs_mgr_fstab.cpp
index 4043fc6..da049ef 100644
--- a/fs_mgr/fs_mgr_fstab.cpp
+++ b/fs_mgr/fs_mgr_fstab.cpp
@@ -38,6 +38,7 @@
 
 using android::base::ParseByteCount;
 using android::base::ParseInt;
+using android::base::ReadFileToString;
 using android::base::Split;
 using android::base::StartsWith;
 
@@ -660,6 +661,8 @@
         TransformFstabForGsi(fstab);
     }
 
+    SkipMountingPartitions(fstab);
+
     return true;
 }
 
@@ -687,6 +690,36 @@
         return false;
     }
 
+    SkipMountingPartitions(fstab);
+
+    return true;
+}
+
+// For GSI to skip mounting /product and /product_services, until there are
+// well-defined interfaces between them and /system. Otherwise, the GSI flashed
+// on /system might not be able to work with /product and /product_services.
+// When they're skipped here, /system/product and /system/product_services in
+// GSI will be used.
+bool SkipMountingPartitions(Fstab* fstab) {
+    constexpr const char kSkipMountConfig[] = "/system/etc/init/config/skip_mount.cfg";
+
+    std::string skip_config;
+    if (!ReadFileToString(kSkipMountConfig, &skip_config)) {
+        return true;
+    }
+
+    for (const auto& skip_mount_point : Split(skip_config, "\n")) {
+        if (skip_mount_point.empty()) {
+            continue;
+        }
+        auto it = std::remove_if(fstab->begin(), fstab->end(),
+                                 [&skip_mount_point](const auto& entry) {
+                                     return entry.mount_point == skip_mount_point;
+                                 });
+        fstab->erase(it, fstab->end());
+        LOG(INFO) << "Skip mounting partition: " << skip_mount_point;
+    }
+
     return true;
 }
 
diff --git a/fs_mgr/include_fstab/fstab/fstab.h b/fs_mgr/include_fstab/fstab/fstab.h
index 88da41d..d7afed6 100644
--- a/fs_mgr/include_fstab/fstab/fstab.h
+++ b/fs_mgr/include_fstab/fstab/fstab.h
@@ -99,6 +99,7 @@
 bool ReadFstabFromFile(const std::string& path, Fstab* fstab);
 bool ReadFstabFromDt(Fstab* fstab, bool log = true);
 bool ReadDefaultFstab(Fstab* fstab);
+bool SkipMountingPartitions(Fstab* fstab);
 
 FstabEntry* GetEntryForMountPoint(Fstab* fstab, const std::string& path);
 
diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index d458924..dd9c4d7 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -43,7 +43,6 @@
 #include "uevent_listener.h"
 #include "util.h"
 
-using android::base::ReadFileToString;
 using android::base::Split;
 using android::base::Timer;
 using android::fs_mgr::AvbHandle;
@@ -55,6 +54,7 @@
 using android::fs_mgr::FstabEntry;
 using android::fs_mgr::ReadDefaultFstab;
 using android::fs_mgr::ReadFstabFromDt;
+using android::fs_mgr::SkipMountingPartitions;
 
 using namespace std::literals;
 
@@ -519,38 +519,10 @@
     return true;
 }
 
-// For GSI to skip mounting /product and /product_services, until there are
-// well-defined interfaces between them and /system. Otherwise, the GSI flashed
-// on /system might not be able to work with /product and /product_services.
-// When they're skipped here, /system/product and /system/product_services in
-// GSI will be used.
-bool FirstStageMount::TrySkipMountingPartitions() {
-    constexpr const char kSkipMountConfig[] = "/system/etc/init/config/skip_mount.cfg";
-
-    std::string skip_config;
-    if (!ReadFileToString(kSkipMountConfig, &skip_config)) {
-        return true;
-    }
-
-    for (const auto& skip_mount_point : Split(skip_config, "\n")) {
-        if (skip_mount_point.empty()) {
-            continue;
-        }
-        auto it = std::remove_if(fstab_.begin(), fstab_.end(),
-                                 [&skip_mount_point](const auto& entry) {
-                                     return entry.mount_point == skip_mount_point;
-                                 });
-        fstab_.erase(it, fstab_.end());
-        LOG(INFO) << "Skip mounting partition: " << skip_mount_point;
-    }
-
-    return true;
-}
-
 bool FirstStageMount::MountPartitions() {
     if (!TrySwitchSystemAsRoot()) return false;
 
-    if (!TrySkipMountingPartitions()) return false;
+    if (!SkipMountingPartitions(&fstab_)) return false;
 
     for (auto current = fstab_.begin(); current != fstab_.end();) {
         // We've already mounted /system above.