loop: add management interface for on-demand device allocation

[firefly-linux-kernel-4.4.55.git] / include / linux / loop.h

diff --git a/include/linux/loop.h b/include/linux/loop.h
index 5f08d18fa1480e19157fad9cd43b885055f6f494..683d698901198935d12370c82dbdcb8e0b90cb0e 100644 (file)
--- a/include/linux/loop.h
+++ b/include/linux/loop.h
@@ -160,4 +160,8 @@ int loop_unregister_transfer(int number);
 #define LOOP_CHANGE_FD         0x4C06
 #define LOOP_SET_CAPACITY      0x4C07
 
+/* /dev/loop-control interface */
+#define LOOP_CTL_ADD           0x4C80
+#define LOOP_CTL_REMOVE                0x4C81
+#define LOOP_CTL_GET_FREE      0x4C82
 #endif