/* 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 address_space_operations ramfs_aops = {

  	.readpage	= simple_readpage,

  	.write_begin	= simple_write_begin,
  	.write_end	= simple_write_end,

  	.set_page_dirty = __set_page_dirty_no_writeback,

  };

  const struct file_operations ramfs_file_operations = {

  	.read		= do_sync_read,
  	.aio_read	= generic_file_aio_read,
  	.write		= do_sync_write,
  	.aio_write	= generic_file_aio_write,

  	.mmap		= generic_file_mmap,

  	.fsync		= noop_fsync,

  	.splice_read	= generic_file_splice_read,

  	.splice_write	= generic_file_splice_write,

  	.llseek		= generic_file_llseek,
  };

  const struct inode_operations ramfs_file_inode_operations = {

  	.setattr	= simple_setattr,

  	.getattr	= simple_getattr,
  };