--- /dev/null
+--- a/lib/ext2fs/unix_io.c
++++ b/lib/ext2fs/unix_io.c
+@@ -428,6 +428,7 @@ static errcode_t unix_open(const char *n
+ struct unix_private_data *data = NULL;
+ errcode_t retval;
+ int open_flags;
++ int f_nocache = 0;
+ struct stat st;
+ #ifdef __linux__
+ struct utsname ut;
+@@ -464,7 +465,11 @@ static errcode_t unix_open(const char *n
+ if (flags & IO_FLAG_EXCLUSIVE)
+ open_flags |= O_EXCL;
+ if (flags & IO_FLAG_DIRECT_IO)
++#if !defined(O_DIRECT) && defined(F_NOCACHE)
++ f_nocache = F_NOCACHE;
++#else
+ open_flags |= O_DIRECT;
++#endif
+ data->flags = flags;
+
+ #ifdef HAVE_OPEN64
+@@ -477,6 +482,13 @@ static errcode_t unix_open(const char *n
+ goto cleanup;
+ }
+
++ if (f_nocache) {
++ if (fcntl(data->dev, f_nocache, 1) < 0) {
++ retval = errno;
++ goto cleanup;
++ }
++ }
++
+ #ifdef BLKSSZGET
+ if (flags & IO_FLAG_DIRECT_IO) {
+ if (ioctl(data->dev, BLKSSZGET, &data->align) != 0)