LU-819 utils: Fix lfs getstripe -M

[fs/lustre-release.git] / lustre / include / linux / lustre_lib.h

diff --git a/lustre/include/linux/lustre_lib.h b/lustre/include/linux/lustre_lib.h
index 8c853ed..fb476f1 100644 (file)
--- a/lustre/include/linux/lustre_lib.h
+++ b/lustre/include/linux/lustre_lib.h
@@ -68,6 +68,10 @@
 #endif
 #endif
 
+/* This macro is only for compatibility reasons with older Linux Lustre user
+ * tools. New ioctls should NOT use this macro as the ioctl "size". Instead
+ * the ioctl should get a "size" argument which is the actual data type used
+ * by the ioctl, to ensure the ioctl interface is versioned correctly. */
 #define OBD_IOC_DATA_TYPE               long
 
 #define LUSTRE_FATAL_SIGS (sigmask(SIGKILL) | sigmask(SIGINT) |                \