diff --git a/libc/kernel/common/linux/seqlock.h b/libc/kernel/common/linux/seqlock.h
index a1e05d4..713bafa 100644
--- a/libc/kernel/common/linux/seqlock.h
+++ b/libc/kernel/common/linux/seqlock.h
@@ -7,36 +7,44 @@
  ***   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_SEQLOCK_H
 #define __LINUX_SEQLOCK_H
-
 #include <linux/spinlock.h>
 #include <linux/preempt.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct {
  unsigned sequence;
  spinlock_t lock;
 } seqlock_t;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __SEQLOCK_UNLOCKED(lockname)   { 0, __SPIN_LOCK_UNLOCKED(lockname) }
-
 #define SEQLOCK_UNLOCKED   __SEQLOCK_UNLOCKED(old_style_seqlock_init)
-
 #define seqlock_init(x)   do { *(x) = (seqlock_t) __SEQLOCK_UNLOCKED(x); } while (0)
-
 #define DEFINE_SEQLOCK(x)   seqlock_t x = __SEQLOCK_UNLOCKED(x)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+typedef struct seqcount {
+ unsigned sequence;
+} seqcount_t;
 #define SEQCNT_ZERO { 0 }
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define seqcount_init(x) do { *(x) = (seqcount_t) SEQCNT_ZERO; } while (0)
-
 #define write_seqlock_irqsave(lock, flags)   do { local_irq_save(flags); write_seqlock(lock); } while (0)
 #define write_seqlock_irq(lock)   do { local_irq_disable(); write_seqlock(lock); } while (0)
 #define write_seqlock_bh(lock)   do { local_bh_disable(); write_seqlock(lock); } while (0)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define write_sequnlock_irqrestore(lock, flags)   do { write_sequnlock(lock); local_irq_restore(flags); } while(0)
 #define write_sequnlock_irq(lock)   do { write_sequnlock(lock); local_irq_enable(); } while(0)
 #define write_sequnlock_bh(lock)   do { write_sequnlock(lock); local_bh_enable(); } while(0)
 #define read_seqbegin_irqsave(lock, flags)   ({ local_irq_save(flags); read_seqbegin(lock); })
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define read_seqretry_irqrestore(lock, iv, flags)   ({   int ret = read_seqretry(lock, iv);   local_irq_restore(flags);   ret;   })
 #endif