add posix_fadvise() for arm

arm call to posix_fadvise simply calls posix_fadvise64

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/sysdeps/linux/common/posix_fadvise.c

@@ -10,30 +10,38 @@
 
 #include <sys/syscall.h>
 
-#ifdef __NR_fadvise64
+#if defined(__NR_fadvise64) || defined(__NR_arm_fadvise64_64)
 # include <fcntl.h>
 # include <endian.h>
 # include <bits/wordsize.h>
 
+# ifdef __NR_arm_fadvise64_64
+int posix_fadvise64(int fd, off64_t offset, off64_t len, int advice);
+# endif
+
 int posix_fadvise(int fd, off_t offset, off_t len, int advice)
 {
+# ifdef __NR_arm_fadvise64_64
+	return posix_fadvise64(fd, offset, len, advice);
+# else
 	int ret;
 	INTERNAL_SYSCALL_DECL(err);
-# if __WORDSIZE == 64
+#  if __WORDSIZE == 64
 	ret = INTERNAL_SYSCALL(fadvise64, err, 4, fd, offset, len, advice);
-# else
-#  if defined(__UCLIBC_SYSCALL_ALIGN_64BIT__)
-	ret = INTERNAL_SYSCALL(fadvise64, err, 6, fd, /*unused*/0,
 #  else
+#   if defined(__UCLIBC_SYSCALL_ALIGN_64BIT__)
+	ret = INTERNAL_SYSCALL(fadvise64, err, 6, fd, /*unused*/0,
+#   else
 	ret = INTERNAL_SYSCALL(fadvise64, err, 5, fd,
-#  endif
+#   endif
 			OFF_HI_LO (offset), len, advice);
-# endif
+#  endif
 	if (INTERNAL_SYSCALL_ERROR_P (ret, err))
 		return INTERNAL_SYSCALL_ERRNO (ret, err);
 	return 0;
+#  endif
 }
-# if defined __UCLIBC_HAS_LFS__ && (!defined __NR_fadvise64_64 || __WORDSIZE == 64)
+# if defined __UCLIBC_HAS_LFS__ && ((!defined __NR_fadvise64_64 && !defined __NR_arm_fadvise64_64) || __WORDSIZE == 64)
 strong_alias(posix_fadvise,posix_fadvise64)
 # endif
 #endif