diff --git a/services/incremental/IncrementalService.cpp b/services/incremental/IncrementalService.cpp
index dde70ca..c9c5489 100644
--- a/services/incremental/IncrementalService.cpp
+++ b/services/incremental/IncrementalService.cpp
@@ -503,7 +503,9 @@
         int cmd = controlParcel.cmd.release().release();
         int pendingReads = controlParcel.pendingReads.release().release();
         int logs = controlParcel.log.release().release();
-        control = mIncFs->createControl(cmd, pendingReads, logs);
+        int blocksWritten =
+                controlParcel.blocksWritten ? controlParcel.blocksWritten->release().release() : -1;
+        control = mIncFs->createControl(cmd, pendingReads, logs, blocksWritten);
     }
 
     std::unique_lock l(mLock);
@@ -1381,7 +1383,9 @@
     int cmd = controlParcel.cmd.release().release();
     int pendingReads = controlParcel.pendingReads.release().release();
     int logs = controlParcel.log.release().release();
-    IncFsMount::Control control = mIncFs->createControl(cmd, pendingReads, logs);
+    int blocksWritten =
+            controlParcel.blocksWritten ? controlParcel.blocksWritten->release().release() : -1;
+    IncFsMount::Control control = mIncFs->createControl(cmd, pendingReads, logs, blocksWritten);
 
     auto ifs = std::make_shared<IncFsMount>(std::string(root), -1, std::move(control), *this);
 
@@ -1516,6 +1520,9 @@
     fsControlParcel.incremental->cmd.reset(dup(ifs.control.cmd()));
     fsControlParcel.incremental->pendingReads.reset(dup(ifs.control.pendingReads()));
     fsControlParcel.incremental->log.reset(dup(ifs.control.logs()));
+    if (ifs.control.blocksWritten() >= 0) {
+        fsControlParcel.incremental->blocksWritten.emplace(dup(ifs.control.blocksWritten()));
+    }
     fsControlParcel.service = new IncrementalServiceConnector(*this, ifs.mountId);
 
     ifs.dataLoaderStub =
diff --git a/services/incremental/ServiceWrappers.cpp b/services/incremental/ServiceWrappers.cpp
index b1521b0..6fabc58 100644
--- a/services/incremental/ServiceWrappers.cpp
+++ b/services/incremental/ServiceWrappers.cpp
@@ -144,8 +144,9 @@
         }
     }
     Control openMount(std::string_view path) const final { return incfs::open(path); }
-    Control createControl(IncFsFd cmd, IncFsFd pendingReads, IncFsFd logs) const final {
-        return incfs::createControl(cmd, pendingReads, logs);
+    Control createControl(IncFsFd cmd, IncFsFd pendingReads, IncFsFd logs,
+                          IncFsFd blocksWritten) const final {
+        return incfs::createControl(cmd, pendingReads, logs, blocksWritten);
     }
     ErrorCode makeFile(const Control& control, std::string_view path, int mode, FileId id,
                        incfs::NewFileParams params) const final {
diff --git a/services/incremental/ServiceWrappers.h b/services/incremental/ServiceWrappers.h
index fad8d67..71fd3ac 100644
--- a/services/incremental/ServiceWrappers.h
+++ b/services/incremental/ServiceWrappers.h
@@ -85,7 +85,8 @@
     virtual ~IncFsWrapper() = default;
     virtual void listExistingMounts(const ExistingMountCallback& cb) const = 0;
     virtual Control openMount(std::string_view path) const = 0;
-    virtual Control createControl(IncFsFd cmd, IncFsFd pendingReads, IncFsFd logs) const = 0;
+    virtual Control createControl(IncFsFd cmd, IncFsFd pendingReads, IncFsFd logs,
+                                  IncFsFd blocksWritten) const = 0;
     virtual ErrorCode makeFile(const Control& control, std::string_view path, int mode, FileId id,
                                incfs::NewFileParams params) const = 0;
     virtual ErrorCode makeDir(const Control& control, std::string_view path, int mode) const = 0;
diff --git a/services/incremental/test/IncrementalServiceTest.cpp b/services/incremental/test/IncrementalServiceTest.cpp
index 47b9051..f0deba7 100644
--- a/services/incremental/test/IncrementalServiceTest.cpp
+++ b/services/incremental/test/IncrementalServiceTest.cpp
@@ -285,7 +285,9 @@
 public:
     MOCK_CONST_METHOD1(listExistingMounts, void(const ExistingMountCallback& cb));
     MOCK_CONST_METHOD1(openMount, Control(std::string_view path));
-    MOCK_CONST_METHOD3(createControl, Control(IncFsFd cmd, IncFsFd pendingReads, IncFsFd logs));
+    MOCK_CONST_METHOD4(createControl,
+                       Control(IncFsFd cmd, IncFsFd pendingReads, IncFsFd logs,
+                               IncFsFd blocksWritten));
     MOCK_CONST_METHOD5(makeFile,
                        ErrorCode(const Control& control, std::string_view path, int mode, FileId id,
                                  NewFileParams params));
@@ -355,7 +357,7 @@
 
     static constexpr auto kPendingReadsFd = 42;
     Control openMountForHealth(std::string_view) {
-        return UniqueControl(IncFs_CreateControl(-1, kPendingReadsFd, -1));
+        return UniqueControl(IncFs_CreateControl(-1, kPendingReadsFd, -1, -1));
     }
 
     RawMetadata getMountInfoMetadata(const Control& control, std::string_view path) {