diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 7e44f18..6183b1b 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -570,12 +570,9 @@
 #define NO_FILE_ID 0xFFFFFFFFFFFFFFFFULL /* general ioctls to srv not to file */
 
 struct compress_ioctl {
-	__le16 CompressionState;
+	__le16 CompressionState; /* See cifspdu.h for possible flag values */
 } __packed;
 
-#define COMPRESSION_FORMAT_NONE		0x0000
-#define COMPRESSION_FORMAT_DEFAULT	0x0001
-#define COMPRESSION_FORMAT_LZNT1	0x0002
 struct smb2_ioctl_req {
 	struct smb2_hdr hdr;
 	__le16 StructureSize;	/* Must be 57 */