diff --git a/util/file_reader_writer.cc b/util/file_reader_writer.cc
index dcf72531c5c..0237fc9d358 100644
--- a/util/file_reader_writer.cc
+++ b/util/file_reader_writer.cc
@@ -186,7 +186,9 @@ Status WritableFileWriter::Close() {
 
   // In direct I/O mode we write whole pages so
   // we need to let the file know where data ends.
-  Status interim = writable_file_->Truncate(filesize_);
+  if (use_direct_io()) {
+    Status interim = writable_file_->Truncate(filesize_);
+  }
   if (!interim.ok() && s.ok()) {
     s = interim;
   }
diff --git a/util/io_posix.cc b/util/io_posix.cc
index 74250c86840..b61f4b38f55 100644
--- a/util/io_posix.cc
+++ b/util/io_posix.cc
@@ -730,13 +730,11 @@ Status PosixWritableFile::PositionedAppend(const Slice& data, uint64_t offset) {
 
 Status PosixWritableFile::Truncate(uint64_t size) {
   Status s;
-  if (use_direct_io()) {
-    int r = ftruncate(fd_, size);
-    if (r < 0) {
-      s = IOError(filename_, errno);
-    } else {
-      filesize_ = size;
-    }
+  int r = ftruncate(fd_, size);
+  if (r < 0) {
+    s = IOError(filename_, errno);
+  } else {
+    filesize_ = size;
   }
   return s;
 }