diff --git a/fs_mgr/libfstab/fstab.cpp b/fs_mgr/libfstab/fstab.cpp
index 43547ea..ca35990 100644
--- a/fs_mgr/libfstab/fstab.cpp
+++ b/fs_mgr/libfstab/fstab.cpp
@@ -262,7 +262,7 @@
             if (!arg.empty() && arg.back() == '%') {
                 arg.pop_back();
                 int val;
-                if (ParseInt(arg, &val, 0, 100)) {
+                if (ParseInt(arg, &val, 0, 200)) {
                     entry->zram_size = CalculateZramSize(val);
                 } else {
                     LWARNING << "Warning: zramsize= flag malformed: " << arg;
diff --git a/fs_mgr/tests/fs_mgr_test.cpp b/fs_mgr/tests/fs_mgr_test.cpp
index 6522c02..6e050cf 100644
--- a/fs_mgr/tests/fs_mgr_test.cpp
+++ b/fs_mgr/tests/fs_mgr_test.cpp
@@ -710,6 +710,7 @@
 source none3       swap   defaults      zramsize=5%
 source none4       swap   defaults      zramsize=105%
 source none5       swap   defaults      zramsize=%
+source none6       swap   defaults      zramsize=210%
 )fs";
     ASSERT_TRUE(android::base::WriteStringToFile(fstab_contents, tf.path));
 
@@ -742,12 +743,17 @@
 
     EXPECT_EQ("none4", entry->mount_point);
     EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
-    EXPECT_EQ(0, entry->zram_size);
+    EXPECT_NE(0, entry->zram_size);
     entry++;
 
     EXPECT_EQ("none5", entry->mount_point);
     EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
     EXPECT_EQ(0, entry->zram_size);
+    entry++;
+
+    EXPECT_EQ("none6", entry->mount_point);
+    EXPECT_TRUE(CompareFlags(flags, entry->fs_mgr_flags));
+    EXPECT_EQ(0, entry->zram_size);
 }
 
 TEST(fs_mgr, ReadFstabFromFile_FsMgrOptions_FileEncryption) {
diff --git a/init/devices.cpp b/init/devices.cpp
index 4de1e20..2cdecec 100644
--- a/init/devices.cpp
+++ b/init/devices.cpp
@@ -307,7 +307,8 @@
     return false;
 }
 
-bool DeviceHandler::FindPlatformDevice(std::string path, std::string* platform_device_path) const {
+bool DeviceHandler::FindPlatformDevice(const std::string& path,
+                                       std::string* platform_device_path) const {
     const std::set<std::string> subsystem_paths = {
             sysfs_mount_point_ + "/bus/platform",
             sysfs_mount_point_ + "/bus/amba",
@@ -316,7 +317,7 @@
     return FindSubsystemDevice(path, platform_device_path, subsystem_paths);
 }
 
-bool DeviceHandler::FindMmcDevice(std::string path, std::string* mmc_device_path) const {
+bool DeviceHandler::FindMmcDevice(const std::string& path, std::string* mmc_device_path) const {
     const std::set<std::string> subsystem_paths = {
             sysfs_mount_point_ + "/bus/mmc",
     };
@@ -324,7 +325,7 @@
     return FindSubsystemDevice(path, mmc_device_path, subsystem_paths);
 }
 
-bool DeviceHandler::FindScsiDevice(std::string path, std::string* scsi_device_path) const {
+bool DeviceHandler::FindScsiDevice(const std::string& path, std::string* scsi_device_path) const {
     const std::set<std::string> subsystem_paths = {
             sysfs_mount_point_ + "/bus/scsi",
     };
diff --git a/init/devices.h b/init/devices.h
index 8b6cf6c..67a3d00 100644
--- a/init/devices.h
+++ b/init/devices.h
@@ -149,9 +149,9 @@
     BlockDeviceInfo GetBlockDeviceInfo(const std::string& uevent_path) const;
     bool FindSubsystemDevice(std::string path, std::string* device_path,
                              const std::set<std::string>& subsystem_paths) const;
-    bool FindPlatformDevice(std::string path, std::string* platform_device_path) const;
-    bool FindMmcDevice(std::string path, std::string* mmc_device_path) const;
-    bool FindScsiDevice(std::string path, std::string* scsi_device_path) const;
+    bool FindPlatformDevice(const std::string& path, std::string* platform_device_path) const;
+    bool FindMmcDevice(const std::string& path, std::string* mmc_device_path) const;
+    bool FindScsiDevice(const std::string& path, std::string* scsi_device_path) const;
     std::tuple<mode_t, uid_t, gid_t> GetDevicePermissions(
         const std::string& path, const std::vector<std::string>& links) const;
     void MakeDevice(const std::string& path, bool block, int major, int minor,