no_fflush_on_unbuffered_streams.patch

diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index e981cd024..995c30e1f 100644
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -60,12 +60,14 @@ int write_string_stream_ts(
                 if (fputc('\n', f) == EOF)
                         return -errno;
 
-        if (flags & WRITE_STRING_FILE_SYNC)
-                r = fflush_sync_and_check(f);
-        else
-                r = fflush_and_check(f);
-        if (r < 0)
-                return r;
+        if (!(flags & WRITE_STRING_FILE_DISABLE_BUFFER)) {
+                if (flags & WRITE_STRING_FILE_SYNC)
+                        r = fflush_sync_and_check(f);
+                else
+                        r = fflush_and_check(f);
+                if (r < 0)
+                        return r;
+        }
 
         if (ts) {
                 struct timespec twice[2] = {*ts, *ts};