/*
   *  linux/fs/ext2/xip.h
   *
   * Copyright (C) 2005 IBM Corporation
   * Author: Carsten Otte (cotte@de.ibm.com)
   */
  
  #ifdef CONFIG_EXT2_FS_XIP
  extern void ext2_xip_verify_sb (struct super_block *);

  extern int ext2_clear_xip_target (struct inode *, sector_t);

  
  static inline int ext2_use_xip (struct super_block *sb)
  {
  	struct ext2_sb_info *sbi = EXT2_SB(sb);
  	return (sbi->s_mount_opt & EXT2_MOUNT_XIP);
  }

  int ext2_get_xip_mem(struct address_space *, pgoff_t, int,
  				void **, unsigned long *);
  #define mapping_is_xip(map) unlikely(map->a_ops->get_xip_mem)

  #else
  #define mapping_is_xip(map)			0
  #define ext2_xip_verify_sb(sb)			do { } while (0)
  #define ext2_use_xip(sb)			0
  #define ext2_clear_xip_target(inode, chain)	0

  #define ext2_get_xip_mem			NULL

  #endif