diff --git a/libc/kernel/common/linux/swap.h b/libc/kernel/common/linux/swap.h
index 63ba556..0f8e546 100644
--- a/libc/kernel/common/linux/swap.h
+++ b/libc/kernel/common/linux/swap.h
@@ -7,33 +7,58 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _LINUX_SWAP_H
 #define _LINUX_SWAP_H
-
 #include <linux/spinlock.h>
 #include <linux/linkage.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <linux/mmzone.h>
 #include <linux/list.h>
 #include <linux/sched.h>
-
 #include <asm/atomic.h>
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #include <asm/page.h>
-
 #define SWAP_FLAG_PREFER 0x8000  
 #define SWAP_FLAG_PRIO_MASK 0x7fff
 #define SWAP_FLAG_PRIO_SHIFT 0
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAX_SWAPFILES_SHIFT 5
 #define MAX_SWAPFILES (1 << MAX_SWAPFILES_SHIFT)
-
+union swap_header {
+ struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ char reserved[PAGE_SIZE - 10];
+ char magic[10];
+ } magic;
+ struct {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ char bootbits[1024];
+ __u32 version;
+ __u32 last_page;
+ __u32 nr_badpages;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ unsigned char sws_uuid[16];
+ unsigned char sws_volume[16];
+ __u32 padding[117];
+ __u32 badpages[1];
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ } info;
+};
 typedef struct {
  unsigned long val;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } swp_entry_t;
-
 struct reclaim_state {
  unsigned long reclaimed_slab;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif