src/shared: refactor shared code

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/shared/ioprio.h b/src/shared/ioprio.h
new file mode 100644
index 0000000000..950e59b237
--- /dev/null
+++ b/src/shared/ioprio.h
@@ -0,0 +1,20 @@
+#ifndef IOPRIO_H
+#define IOPRIO_H
+
+/* This is minimal version of Linux' linux/ioprio.h header file, which
+ * is licensed GPL2 */
+
+/*
+ * These are the io priority groups as implemented by CFQ. RT is the realtime
+ * class, it always gets premium service. BE is the best-effort scheduling
+ * class, the default for any process. IDLE is the idle scheduling class, it
+ * is only served when no one else is using the disk.
+ */
+enum {
+        IOPRIO_CLASS_NONE,
+        IOPRIO_CLASS_RT,
+        IOPRIO_CLASS_BE,
+        IOPRIO_CLASS_IDLE,
+};
+
+#endif