Merge "fs_mgr_fstab: translate reserve_root to reserved_size in fsmgr"

                fs_options.append(",");  // appends a comma if not the first

            }

            fs_options.append(flag);

            if (entry->fs_type == "f2fs" && StartsWith(flag, "reserve_root=")) {

                std::string arg;

                if (auto equal_sign = flag.find('='); equal_sign != std::string::npos) {

                    arg = flag.substr(equal_sign + 1);

                }

                if (!ParseInt(arg, &entry->reserved_size)) {

                    LWARNING << "Warning: reserve_root= flag malformed: " << arg;

                } else {

                    entry->reserved_size <<= 12;

                }

            }

        }

    }

    entry->fs_options = std::move(fs_options);