diff --git a/libc/kernel/uapi/asm-generic/mman-common.h b/libc/kernel/uapi/asm-generic/mman-common.h
index e96f4cc..9440576 100644
--- a/libc/kernel/uapi/asm-generic/mman-common.h
+++ b/libc/kernel/uapi/asm-generic/mman-common.h
@@ -62,7 +62,6 @@
 #define MADV_PAGEOUT 21
 #define MADV_POPULATE_READ 22
 #define MADV_POPULATE_WRITE 23
-#define MADV_DONTNEED_LOCKED 24
 #define MAP_FILE 0
 #define PKEY_DISABLE_ACCESS 0x1
 #define PKEY_DISABLE_WRITE 0x2
diff --git a/libc/kernel/uapi/asm-generic/shmbuf.h b/libc/kernel/uapi/asm-generic/shmbuf.h
index 11487f4..067ffbc 100644
--- a/libc/kernel/uapi/asm-generic/shmbuf.h
+++ b/libc/kernel/uapi/asm-generic/shmbuf.h
@@ -19,11 +19,9 @@
 #ifndef __ASM_GENERIC_SHMBUF_H
 #define __ASM_GENERIC_SHMBUF_H
 #include <asm/bitsperlong.h>
-#include <asm/ipcbuf.h>
-#include <asm/posix_types.h>
 struct shmid64_ds {
   struct ipc64_perm shm_perm;
-  __kernel_size_t shm_segsz;
+  size_t shm_segsz;
 #if __BITS_PER_LONG == 64
   long shm_atime;
   long shm_dtime;
diff --git a/libc/kernel/uapi/asm-generic/signal.h b/libc/kernel/uapi/asm-generic/signal.h
index 5cb1dce..874fece 100644
--- a/libc/kernel/uapi/asm-generic/signal.h
+++ b/libc/kernel/uapi/asm-generic/signal.h
@@ -84,7 +84,7 @@
 typedef struct sigaltstack {
   void __user * ss_sp;
   int ss_flags;
-  __kernel_size_t ss_size;
+  size_t ss_size;
 } stack_t;
 #endif
 #endif
diff --git a/libc/kernel/uapi/asm-generic/socket.h b/libc/kernel/uapi/asm-generic/socket.h
index 6926187..6767993 100644
--- a/libc/kernel/uapi/asm-generic/socket.h
+++ b/libc/kernel/uapi/asm-generic/socket.h
@@ -100,7 +100,6 @@
 #define SO_NETNS_COOKIE 71
 #define SO_BUF_LOCK 72
 #define SO_RESERVE_MEM 73
-#define SO_TXREHASH 74
 #if __BITS_PER_LONG == 64 || defined(__x86_64__) && defined(__ILP32__)
 #define SO_TIMESTAMP SO_TIMESTAMP_OLD
 #define SO_TIMESTAMPNS SO_TIMESTAMPNS_OLD