io_uring.h: add IORING_FEAT_LINKED_FILE
If this is set in features, applications can rely on file assignments
being done sanely in deferred execution setups (like links, or drain).
@@ -300,6 +300,7 @@ struct io_uring_params {
#define IORING_FEAT_NATIVE_WORKERS (1U << 9)
#define IORING_FEAT_RSRC_TAGS (1U << 10)
#define IORING_FEAT_CQE_SKIP (1U << 11)
+#define IORING_FEAT_LINKED_FILE (1U << 12)
/*
* io_uring_register(2) opcodes and arguments
