diff --git a/linux/ioctlent.h b/linux/ioctlent.h
index bb9f826..cc5af72 100644
--- a/linux/ioctlent.h
+++ b/linux/ioctlent.h
@@ -507,6 +507,14 @@
 	{"linux/kd.h",	"KDFONTOP",	0x4b72},
 	{"linux/kd.h",	"KDGKBDIACRUC",	0x4bfa},
 	{"linux/kd.h",	"KDSKBDIACRUC",	0x4bfb},
+	{"linux/loop.h",	"LOOP_SET_FD",	0x4c00},
+	{"linux/loop.h",	"LOOP_CLR_FD",	0x4c01},
+	{"linux/loop.h",	"LOOP_SET_STATUS",	0x4c02},
+	{"linux/loop.h",	"LOOP_GET_STATUS",	0x4c03},
+	{"linux/loop.h",	"LOOP_SET_STATUS64",	0x4c04},
+	{"linux/loop.h",	"LOOP_GET_STATUS64",	0x4c05},
+	{"linux/loop.h",	"LOOP_CHANGE_FD",	0x4c06},
+	{"linux/loop.h",	"LOOP_SET_CAPACITY",	0x4c07},
 	{"asm/mtrr.h",	"MTRRIOC32_ADD_ENTRY",	0x4d00},
 	{"asm/mtrr.h",	"MTRRIOC_ADD_ENTRY",	0x4d00},
 	{"asm/mce.h",	"MCE_GET_RECORD_LEN",	0x4d01},
diff --git a/linux/ioctlent.sh b/linux/ioctlent.sh
index a0e71e7..65b005d 100755
--- a/linux/ioctlent.sh
+++ b/linux/ioctlent.sh
@@ -64,6 +64,7 @@
 lookup_ioctls 22 scsi/sg.h
 lookup_ioctls 46 linux/fb.h
 lookup_ioctls 4B linux/kd.h
+lookup_ioctls 4C linux/loop.h
 lookup_ioctls 53 linux/cdrom.h scsi/scsi.h scsi/scsi_ioctl.h
 lookup_ioctls 54 $asm/ioctls.h asm-generic/ioctls.h
 lookup_ioctls 56 linux/vt.h