Consolidate Linux sync_file_range implementations

This patch consolidates all the sync_file_range implementation for Linux
in only one (sysdeps/unix/sysv/linux/sync_file_range.c).  It also removes
the syscall from the auto-generation using assembly macros (except for
x86_64 due x32 [1]).

For current minimum supported kernel (2.6.32 for x86_64 and 3.2 for all
other architectures) either sync_file_range or sync_file_range2 is supported
and it is expected that any future Linux ABI will provide either of one
syscall.  So the code path that returns ENOSYS in the case of missing
syscall is removed.

Checked on x86_64, i386, powerpc64le, aarch64, and armhf.

	* sysdeps/unix/sysv/linux/Makefile (tests): Add tst-sync_file_range.
	* sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c: Remove file.
	* sysdeps/sysv/linux/powerpc/powerpc64/sync_file_range.c: Likewise.
	* sysdeps/unix/sysv/linux/sync_file_range.c: New file.
	* sysdeps/unix/sysv/linux/tst-sync_file_range.c (sync_file_range):
	Consolidate all Linux implementations.

[1] https://patchwork.ozlabs.org/patch/659794/

1 files changed, 0 insertions, 33 deletions

diff --git a/sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c b/sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c
deleted file mode 100644
index de831c79e4..0000000000
--- a/sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Selective file content synch'ing.
-   Copyright (C) 2006-2016 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 <errno.h>
-#include <fcntl.h>
-#include <sys/types.h>
-
-#include <sysdep-cancel.h>
-#include <sys/syscall.h>
-
-int
-sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
-{
-  return SYSCALL_CANCEL (sync_file_range, fd, 0,
-			 __LONG_LONG_PAIR ((long) (from >> 32), (long) from),
-			 __LONG_LONG_PAIR ((long) (to >> 32), (long) to),
-			 flags);
-}