Issue #13324: fcntlmodule: Add the F_NOCACHE flag. Patch by Alex Stewart.
diff --git a/Modules/fcntlmodule.c b/Modules/fcntlmodule.c
index bfc5985..6b7e3fc 100644
--- a/Modules/fcntlmodule.c
+++ b/Modules/fcntlmodule.c
@@ -540,10 +540,13 @@
if (ins(d, "F_SHLCK", (long)F_SHLCK)) return -1;
#endif
-/* OS X (and maybe others) let you tell the storage device to flush to physical media */
+/* OS X specifics */
#ifdef F_FULLFSYNC
if (ins(d, "F_FULLFSYNC", (long)F_FULLFSYNC)) return -1;
#endif
+#ifdef F_NOCACHE
+ if (ins(d, "F_NOCACHE", (long)F_NOCACHE)) return -1;
+#endif
/* For F_{GET|SET}FL */
#ifdef FD_CLOEXEC