text: /* Selective file content synch'ing.
     Copyright (C) 2006-2017 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 <fcntl.h>
  #include <sysdep-cancel.h>
  
  int
  sync_file_range (int fd, __off64_t offset, __off64_t len, unsigned int flags)
  {
  #if defined (__NR_sync_file_range2)
    return SYSCALL_CANCEL (sync_file_range2, fd, flags, SYSCALL_LL64 (offset),
  			 SYSCALL_LL64 (len));
  #elif defined (__NR_sync_file_range)
    return SYSCALL_CANCEL (sync_file_range, fd,
  			 __ALIGNMENT_ARG SYSCALL_LL64 (offset),
  			 SYSCALL_LL64 (len), flags);
  #endif
  }
  