/* file-mmu.c: ramfs MMU-based file operations
   *
   * Resizable simple ram filesystem for Linux.
   *
   * Copyright (C) 2000 Linus Torvalds.
   *               2000 Transmeta Corp.
   *
   * Usage limits added by David Gibson, Linuxcare Australia.
   * This file is released under the GPL.
   */
  
  /*
   * NOTE! This filesystem is probably most useful
   * not as a real filesystem, but as an example of
   * how virtual filesystems can be written.
   *
   * It doesn't get much simpler than this. Consider
   * that this file implements the full semantics of
   * a POSIX-compliant read-write filesystem.
   *
   * Note in particular how the filesystem does not
   * need to implement any data structures of its own
   * to keep track of the virtual data: using the VFS
   * caches is sufficient.
   */
  
  #include <linux/fs.h>
  #include <linux/mm.h>
  #include <linux/ramfs.h>
  
  #include "internal.h"
  
  const struct file_operations ramfs_file_operations = {
  	.read_iter	= generic_file_read_iter,
  	.write_iter	= generic_file_write_iter,
  	.mmap		= generic_file_mmap,
  	.fsync		= noop_fsync,
  	.splice_read	= generic_file_splice_read,
  	.splice_write	= iter_file_splice_write,
  	.llseek		= generic_file_llseek,
  };
  
  const struct inode_operations ramfs_file_inode_operations = {
  	.setattr	= simple_setattr,
  	.getattr	= simple_getattr,
  };