diff --git a/fs_mgr/libsnapshot/cow_api_test.cpp b/fs_mgr/libsnapshot/cow_api_test.cpp
index f9e9b4ca7..40d5efbeb 100644
--- a/fs_mgr/libsnapshot/cow_api_test.cpp
+++ b/fs_mgr/libsnapshot/cow_api_test.cpp
@@ -70,7 +70,7 @@ TEST_F(CowTest, ReadWrite) {
     ASSERT_TRUE(writer.AddCopy(10, 20));
     ASSERT_TRUE(writer.AddRawBlocks(50, data.data(), data.size()));
     ASSERT_TRUE(writer.AddZeroBlocks(51, 2));
-    ASSERT_TRUE(writer.Finalize());
+    ASSERT_TRUE(writer.Flush());
 
     ASSERT_EQ(lseek(cow_->fd, 0, SEEK_SET), 0);
 
@@ -145,7 +145,7 @@ TEST_F(CowTest, CompressGz) {
     data.resize(options.block_size, '\0');
 
     ASSERT_TRUE(writer.AddRawBlocks(50, data.data(), data.size()));
-    ASSERT_TRUE(writer.Finalize());
+    ASSERT_TRUE(writer.Flush());
 
     ASSERT_EQ(lseek(cow_->fd, 0, SEEK_SET), 0);
 
@@ -182,7 +182,7 @@ TEST_F(CowTest, CompressTwoBlocks) {
     data.resize(options.block_size * 2, '\0');
 
     ASSERT_TRUE(writer.AddRawBlocks(50, data.data(), data.size()));
-    ASSERT_TRUE(writer.Finalize());
+    ASSERT_TRUE(writer.Flush());
 
     ASSERT_EQ(lseek(cow_->fd, 0, SEEK_SET), 0);
 
@@ -224,7 +224,7 @@ TEST_P(CompressionTest, HorribleSink) {
     data.resize(options.block_size, '\0');
 
     ASSERT_TRUE(writer.AddRawBlocks(50, data.data(), data.size()));
-    ASSERT_TRUE(writer.Finalize());
+    ASSERT_TRUE(writer.Flush());
 
     ASSERT_EQ(lseek(cow_->fd, 0, SEEK_SET), 0);
 
@@ -259,7 +259,7 @@ TEST_F(CowTest, GetSize) {
     ASSERT_TRUE(writer.AddRawBlocks(50, data.data(), data.size()));
     ASSERT_TRUE(writer.AddZeroBlocks(51, 2));
     auto size_before = writer.GetCowSize();
-    ASSERT_TRUE(writer.Finalize());
+    ASSERT_TRUE(writer.Flush());
     auto size_after = writer.GetCowSize();
     ASSERT_EQ(size_before, size_after);
     struct stat buf;
@@ -279,7 +279,7 @@ TEST_F(CowTest, Append) {
     std::string data = "This is some data, believe it";
     data.resize(options.block_size, '\0');
     ASSERT_TRUE(writer->AddRawBlocks(50, data.data(), data.size()));
-    ASSERT_TRUE(writer->Finalize());
+    ASSERT_TRUE(writer->Flush());
 
     ASSERT_EQ(lseek(cow_->fd, 0, SEEK_SET), 0);
 
@@ -289,7 +289,7 @@ TEST_F(CowTest, Append) {
     std::string data2 = "More data!";
     data2.resize(options.block_size, '\0');
     ASSERT_TRUE(writer->AddRawBlocks(51, data2.data(), data2.size()));
-    ASSERT_TRUE(writer->Finalize());
+    ASSERT_TRUE(writer->Flush());
 
     ASSERT_EQ(lseek(cow_->fd, 0, SEEK_SET), 0);
 
diff --git a/fs_mgr/libsnapshot/cow_snapuserd_test.cpp b/fs_mgr/libsnapshot/cow_snapuserd_test.cpp
index bbda55266..1d6c10405 100644
--- a/fs_mgr/libsnapshot/cow_snapuserd_test.cpp
+++ b/fs_mgr/libsnapshot/cow_snapuserd_test.cpp
@@ -227,7 +227,7 @@ void SnapuserdTest::CreateCowDevice(std::unique_ptr<TemporaryFile>& cow) {
     ASSERT_TRUE(writer.AddRawBlocks(blk_random2_replace_start, random_buffer_2_.get(), size_));
 
     // Flush operations
-    ASSERT_TRUE(writer.Finalize());
+    ASSERT_TRUE(writer.Flush());
 
     ASSERT_EQ(lseek(cow->fd, 0, SEEK_SET), 0);
 }
diff --git a/fs_mgr/libsnapshot/cow_writer.cpp b/fs_mgr/libsnapshot/cow_writer.cpp
index f9ba0b3c2..f96f174c5 100644
--- a/fs_mgr/libsnapshot/cow_writer.cpp
+++ b/fs_mgr/libsnapshot/cow_writer.cpp
@@ -293,7 +293,7 @@ static void SHA256(const void*, size_t, uint8_t[]) {
 #endif
 }
 
-bool CowWriter::Finalize() {
+bool CowWriter::Flush() {
     header_.ops_size = ops_.size();
 
     memset(header_.ops_checksum, 0, sizeof(uint8_t) * 32);
diff --git a/fs_mgr/libsnapshot/estimate_cow_from_nonab_ota.cpp b/fs_mgr/libsnapshot/estimate_cow_from_nonab_ota.cpp
index 45833e121..2a0136b6d 100644
--- a/fs_mgr/libsnapshot/estimate_cow_from_nonab_ota.cpp
+++ b/fs_mgr/libsnapshot/estimate_cow_from_nonab_ota.cpp
@@ -375,7 +375,7 @@ bool NonAbEstimator::AnalyzePartition(const std::string& partition_name) {
         }
     }
 
-    if (!writer->Finalize()) {
+    if (!writer->Flush()) {
         return false;
     }
 
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/cow_writer.h b/fs_mgr/libsnapshot/include/libsnapshot/cow_writer.h
index 3ab377823..2bc017100 100644
--- a/fs_mgr/libsnapshot/include/libsnapshot/cow_writer.h
+++ b/fs_mgr/libsnapshot/include/libsnapshot/cow_writer.h
@@ -53,7 +53,7 @@ class ICowWriter {
 
     // Flush all pending writes. This must be called before closing the writer
     // to ensure that the correct headers and footers are written.
-    virtual bool Finalize() = 0;
+    virtual bool Flush() = 0;
 
     // Return number of bytes the cow image occupies on disk.
     virtual uint64_t GetCowSize() = 0;
@@ -84,7 +84,7 @@ class CowWriter : public ICowWriter {
     bool Initialize(android::base::unique_fd&& fd, OpenMode mode = OpenMode::WRITE);
     bool Initialize(android::base::borrowed_fd fd, OpenMode mode = OpenMode::WRITE);
 
-    bool Finalize() override;
+    bool Flush() override;
 
     uint64_t GetCowSize() override;
 
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/snapshot_writer.h b/fs_mgr/libsnapshot/include/libsnapshot/snapshot_writer.h
index 48d20be65..bf57a0078 100644
--- a/fs_mgr/libsnapshot/include/libsnapshot/snapshot_writer.h
+++ b/fs_mgr/libsnapshot/include/libsnapshot/snapshot_writer.h
@@ -50,7 +50,7 @@ class OnlineKernelSnapshotWriter : public ISnapshotWriter {
     // Set the device used for all writes.
     void SetSnapshotDevice(android::base::unique_fd&& snapshot_fd, uint64_t cow_size);
 
-    bool Finalize() override;
+    bool Flush() override;
     uint64_t GetCowSize() override { return cow_size_; }
     virtual std::unique_ptr<FileDescriptor> OpenReader() override;
 
diff --git a/fs_mgr/libsnapshot/make_cow_from_ab_ota.cpp b/fs_mgr/libsnapshot/make_cow_from_ab_ota.cpp
index d0b8f52e0..f76107709 100644
--- a/fs_mgr/libsnapshot/make_cow_from_ab_ota.cpp
+++ b/fs_mgr/libsnapshot/make_cow_from_ab_ota.cpp
@@ -204,7 +204,7 @@ bool PayloadConverter::ProcessPartition(const PartitionUpdate& update) {
         }
     }
 
-    if (!writer_->Finalize()) {
+    if (!writer_->Flush()) {
         LOG(ERROR) << "Unable to finalize COW for " << partition_name;
         return false;
     }
diff --git a/fs_mgr/libsnapshot/snapshot_writer.cpp b/fs_mgr/libsnapshot/snapshot_writer.cpp
index 8c1311cff..1958f188b 100644
--- a/fs_mgr/libsnapshot/snapshot_writer.cpp
+++ b/fs_mgr/libsnapshot/snapshot_writer.cpp
@@ -40,7 +40,7 @@ void OnlineKernelSnapshotWriter::SetSnapshotDevice(android::base::unique_fd&& sn
     cow_size_ = cow_size;
 }
 
-bool OnlineKernelSnapshotWriter::Finalize() {
+bool OnlineKernelSnapshotWriter::Flush() {
     if (fsync(snapshot_fd_.get()) < 0) {
         PLOG(ERROR) << "fsync";
         return false;