diff --git a/sysdeps/unix/sysv/linux/arm/truncate64.c b/sysdeps/unix/sysv/linux/arm/truncate64.c
deleted file mode 100644
index 28563af..0000000
--- a/sysdeps/unix/sysv/linux/arm/truncate64.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sys/types.h>
-#include <endian.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-/* Truncate the file FD refers to to LENGTH bytes.  */
-int
-truncate64 (const char *path, off64_t length)
-{
-  unsigned int low = length & 0xffffffff;
-  unsigned int high = length >> 32;
-  int result = INLINE_SYSCALL (truncate64, 4, path, 0,
-			       __LONG_LONG_PAIR (high, low));
-  return result;
-}
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/truncate.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/truncate.c
deleted file mode 100644
index 2579951..0000000
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/truncate.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-/* Truncate PATH to LENGTH bytes.  */
-int
-__truncate (const char *path, off_t length)
-{
-  return INLINE_SYSCALL (truncate64, __ALIGNMENT_COUNT (3, 4), path,
-                         __ALIGNMENT_ARG
-                         __LONG_LONG_PAIR (length >> 31, length));
-}
-weak_alias (__truncate, truncate)
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/truncate64.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/truncate64.c
deleted file mode 100644
index f2927ea..0000000
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/truncate64.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-/* Truncate the file PATH to LENGTH bytes.  */
-int
-truncate64 (const char *path, off64_t length)
-{
-  unsigned int low = length & 0xffffffff;
-  unsigned int high = length >> 32;
-  return INLINE_SYSCALL (truncate64, __ALIGNMENT_COUNT (3, 4), path,
-                         __ALIGNMENT_ARG __LONG_LONG_PAIR (high, low));
-}
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/truncate64.c b/sysdeps/unix/sysv/linux/mips/mips32/truncate64.c
deleted file mode 100644
index 28563af..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips32/truncate64.c
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sys/types.h>
-#include <endian.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-/* Truncate the file FD refers to to LENGTH bytes.  */
-int
-truncate64 (const char *path, off64_t length)
-{
-  unsigned int low = length & 0xffffffff;
-  unsigned int high = length >> 32;
-  int result = INLINE_SYSCALL (truncate64, 4, path, 0,
-			       __LONG_LONG_PAIR (high, low));
-  return result;
-}
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/truncate64.c b/sysdeps/unix/sysv/linux/mips/mips64/truncate64.c
deleted file mode 100644
index 6e25b02..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/truncate64.c
+++ /dev/null
@@ -1 +0,0 @@
-/* Empty.  */
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
deleted file mode 100644
index ccfdafa..0000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sys/types.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-/* Truncate the file referenced by FD to LENGTH bytes.  */
-int
-truncate64 (const char *path, off64_t length)
-{
-  /* On PPC32 64bit values are aligned in odd/even register pairs.  */
-  int result = INLINE_SYSCALL (truncate64, 4, path, 0,
-			       (long) (length >> 32),
-			       (long) length);
-  return result;
-}
diff --git a/sysdeps/unix/sysv/linux/truncate.c b/sysdeps/unix/sysv/linux/truncate.c
new file mode 100644
index 0000000..0631a93
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/truncate.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <unistd.h>
+#include <sysdep.h>
+#include <errno.h>
+
+#ifndef __OFF_T_MATCHES_OFF64_T
+/* Truncate PATH to LENGTH bytes.  */
+int
+__truncate (const char *path, off_t length)
+{
+  return INLINE_SYSCALL_CALL (truncate, path, length);
+}
+weak_alias (__truncate, truncate)
+#endif
diff --git a/sysdeps/unix/sysv/linux/truncate64.c b/sysdeps/unix/sysv/linux/truncate64.c
index 92a6bc4..0d70da7 100644
--- a/sysdeps/unix/sysv/linux/truncate64.c
+++ b/sysdeps/unix/sysv/linux/truncate64.c
@@ -15,21 +15,23 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <sys/types.h>
-#include <endian.h>
-#include <errno.h>
 #include <unistd.h>
-
 #include <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
 
-/* Truncate the file referenced by FD to LENGTH bytes.  */
+#ifndef __NR_truncate64
+# define __NR_truncate64 __NR_truncate
+#endif
+
+/* Truncate PATH to LENGTH bytes.  */
 int
-truncate64 (const char *path, off64_t length)
+__truncate64 (const char *path, off64_t length)
 {
-  unsigned int low = length & 0xffffffff;
-  unsigned int high = length >> 32;
-  int result = INLINE_SYSCALL (truncate64, 3, path,
-			       __LONG_LONG_PAIR (high, low));
-  return result;
+  return INLINE_SYSCALL_CALL (truncate64, path,
+			      __ALIGNMENT_ARG SYSCALL_LL64 (length));
 }
+weak_alias (__truncate64, truncate64)
+
+#ifdef __OFF_T_MATCHES_OFF64_T
+weak_alias (__truncate64, truncate);
+#endif
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/truncate64.c b/sysdeps/unix/sysv/linux/wordsize-64/truncate64.c
deleted file mode 100644
index 8999768..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/truncate64.c
+++ /dev/null
@@ -1 +0,0 @@
-/* truncate64 is the same as truncate. */
