diff --git a/libc/kernel/common/linux/quota.h b/libc/kernel/common/linux/quota.h
index 054af5a..3918bdc 100644
--- a/libc/kernel/common/linux/quota.h
+++ b/libc/kernel/common/linux/quota.h
@@ -7,81 +7,88 @@
  ***   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_QUOTA_
 #define _LINUX_QUOTA_
-
 #include <linux/errno.h>
 #include <linux/types.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __DQUOT_VERSION__ "dquot_6.5.1"
 #define __DQUOT_NUM_VERSION__ 6*10000+5*100+1
-
 typedef __kernel_uid32_t qid_t;
 typedef __u64 qsize_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define QUOTABLOCK_BITS 10
 #define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS)
-
 #define qb2kb(x) ((x) << (QUOTABLOCK_BITS-10))
 #define kb2qb(x) ((x) >> (QUOTABLOCK_BITS-10))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define toqb(x) (((x) + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS)
-
 #define MAXQUOTAS 2
 #define USRQUOTA 0  
 #define GRPQUOTA 1  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define INITQFNAMES {   "user",     "group",     "undefined",  };
-
 #define SUBCMDMASK 0x00ff
 #define SUBCMDSHIFT 8
 #define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Q_SYNC 0x800001  
 #define Q_QUOTAON 0x800002  
 #define Q_QUOTAOFF 0x800003  
 #define Q_GETFMT 0x800004  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Q_GETINFO 0x800005  
 #define Q_SETINFO 0x800006  
 #define Q_GETQUOTA 0x800007  
 #define Q_SETQUOTA 0x800008  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define QIF_BLIMITS 1
 #define QIF_SPACE 2
 #define QIF_ILIMITS 4
 #define QIF_INODES 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define QIF_BTIME 16
 #define QIF_ITIME 32
 #define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS)
 #define QIF_USAGE (QIF_SPACE | QIF_INODES)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define QIF_TIMES (QIF_BTIME | QIF_ITIME)
 #define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES)
-
 struct if_dqblk {
  __u64 dqb_bhardlimit;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u64 dqb_bsoftlimit;
  __u64 dqb_curspace;
  __u64 dqb_ihardlimit;
  __u64 dqb_isoftlimit;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u64 dqb_curinodes;
  __u64 dqb_btime;
  __u64 dqb_itime;
  __u32 dqb_valid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 #define IIF_BGRACE 1
 #define IIF_IGRACE 2
 #define IIF_FLAGS 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IIF_ALL (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS)
-
 struct if_dqinfo {
  __u64 dqi_bgrace;
  __u64 dqi_igrace;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 dqi_flags;
  __u32 dqi_valid;
 };
-
 #include <sys/cdefs.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif