diff --git a/libc/kernel/common/linux/fs.h b/libc/kernel/common/linux/fs.h
index 8d375b5..5d7b365 100644
--- a/libc/kernel/common/linux/fs.h
+++ b/libc/kernel/common/linux/fs.h
@@ -7,156 +7,167 @@
  ***   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_FS_H
 #define _LINUX_FS_H
-
 #include <linux/limits.h>
 #include <linux/ioctl.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #undef NR_OPEN
 #define NR_OPEN (1024*1024)  
 #define INR_OPEN 1024  
-
 #define BLOCK_SIZE_BITS 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
-
 #define SEEK_SET 0  
 #define SEEK_CUR 1  
 #define SEEK_END 2  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct files_stat_struct {
  int nr_files;
  int nr_free_files;
  int max_files;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
-
 struct inodes_stat_t {
  int nr_inodes;
  int nr_unused;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int dummy[5];
 };
-
 #define NR_FILE 8192  
-
 #define MAY_EXEC 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MAY_WRITE 2
 #define MAY_READ 4
 #define MAY_APPEND 8
-
 #define FMODE_READ 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FMODE_WRITE 2
-
 #define FMODE_LSEEK 4
 #define FMODE_PREAD 8
 #define FMODE_PWRITE FMODE_PREAD  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FMODE_EXEC 16
-
 #define RW_MASK 1
 #define RWA_MASK 2
 #define READ 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define WRITE 1
 #define READA 2  
 #define SWRITE 3  
 #define SPECIAL 4  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define READ_SYNC (READ | (1 << BIO_RW_SYNC))
 #define WRITE_SYNC (WRITE | (1 << BIO_RW_SYNC))
 #define WRITE_BARRIER ((1 << BIO_RW) | (1 << BIO_RW_BARRIER))
-
 #define SEL_IN 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SEL_OUT 2
 #define SEL_EX 4
-
 #define FS_REQUIRES_DEV 1 
 #define FS_BINARY_MOUNTDATA 2
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FS_REVAL_DOT 16384  
 #define FS_ODD_RENAME 32768  
-
 #define MS_RDONLY 1  
 #define MS_NOSUID 2  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MS_NODEV 4  
 #define MS_NOEXEC 8  
 #define MS_SYNCHRONOUS 16  
 #define MS_REMOUNT 32  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MS_MANDLOCK 64  
 #define MS_DIRSYNC 128  
 #define MS_NOATIME 1024  
 #define MS_NODIRATIME 2048  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MS_BIND 4096
 #define MS_MOVE 8192
 #define MS_REC 16384
 #define MS_VERBOSE 32768  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MS_SILENT 32768
 #define MS_POSIXACL (1<<16)  
 #define MS_UNBINDABLE (1<<17)  
 #define MS_PRIVATE (1<<18)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MS_SLAVE (1<<19)  
 #define MS_SHARED (1<<20)  
 #define MS_ACTIVE (1<<30)
 #define MS_NOUSER (1<<31)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK)
-
 #define MS_MGC_VAL 0xC0ED0000
 #define MS_MGC_MSK 0xffff0000
-
 #define S_SYNC 1  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_NOATIME 2  
 #define S_APPEND 4  
 #define S_IMMUTABLE 8  
 #define S_DEAD 16  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_NOQUOTA 32  
 #define S_DIRSYNC 64  
 #define S_NOCMTIME 128  
 #define S_SWAPFILE 256  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_PRIVATE 512  
-
 #define __IS_FLG(inode,flg) ((inode)->i_sb->s_flags & (flg))
-
 #define IS_RDONLY(inode) ((inode)->i_sb->s_flags & MS_RDONLY)
 #define IS_SYNC(inode) (__IS_FLG(inode, MS_SYNCHRONOUS) ||   ((inode)->i_flags & S_SYNC))
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IS_DIRSYNC(inode) (__IS_FLG(inode, MS_SYNCHRONOUS|MS_DIRSYNC) ||   ((inode)->i_flags & (S_SYNC|S_DIRSYNC)))
 #define IS_MANDLOCK(inode) __IS_FLG(inode, MS_MANDLOCK)
-
 #define IS_NOQUOTA(inode) ((inode)->i_flags & S_NOQUOTA)
 #define IS_APPEND(inode) ((inode)->i_flags & S_APPEND)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IS_IMMUTABLE(inode) ((inode)->i_flags & S_IMMUTABLE)
 #define IS_POSIXACL(inode) __IS_FLG(inode, MS_POSIXACL)
-
 #define IS_DEADDIR(inode) ((inode)->i_flags & S_DEAD)
 #define IS_NOCMTIME(inode) ((inode)->i_flags & S_NOCMTIME)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IS_SWAPFILE(inode) ((inode)->i_flags & S_SWAPFILE)
 #define IS_PRIVATE(inode) ((inode)->i_flags & S_PRIVATE)
-
 #define BLKROSET _IO(0x12,93)  
 #define BLKROGET _IO(0x12,94)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLKRRPART _IO(0x12,95)  
 #define BLKGETSIZE _IO(0x12,96)  
 #define BLKFLSBUF _IO(0x12,97)  
 #define BLKRASET _IO(0x12,98)  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLKRAGET _IO(0x12,99)  
 #define BLKFRASET _IO(0x12,100) 
 #define BLKFRAGET _IO(0x12,101) 
 #define BLKSECTSET _IO(0x12,102) 
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLKSECTGET _IO(0x12,103) 
 #define BLKSSZGET _IO(0x12,104) 
-
 #define BLKBSZGET _IOR(0x12,112,size_t)
 #define BLKBSZSET _IOW(0x12,113,size_t)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLKGETSIZE64 _IOR(0x12,114,size_t)  
 #define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
 #define BLKTRACESTART _IO(0x12,116)
 #define BLKTRACESTOP _IO(0x12,117)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define BLKTRACETEARDOWN _IO(0x12,118)
-
 #define BMAP_IOCTL 1  
 #define FIBMAP _IO(0x00,1)  
 #define FIGETBSZ _IO(0x00,2)  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SYNC_FILE_RANGE_WAIT_BEFORE 1
 #define SYNC_FILE_RANGE_WRITE 2
 #define SYNC_FILE_RANGE_WAIT_AFTER 4
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */