LXR linux/fs/ext2/xip.h

   1/*
   2 *  linux/fs/ext2/xip.h
   3 *
   4 * Copyright (C) 2005 IBM Corporation
   5 * Author: Carsten Otte (cotte@de.ibm.com)
   6 */
   7
   8#ifdef CONFIG_EXT2_FS_XIP
   9extern void ext2_xip_verify_sb (struct super_block *);
  10extern int ext2_clear_xip_target (struct inode *, int);
  11
  12static inline int ext2_use_xip (struct super_block *sb)
  13{
  14        struct ext2_sb_info *sbi = EXT2_SB(sb);
  15        return (sbi->s_mount_opt & EXT2_MOUNT_XIP);
  16}
  17struct page* ext2_get_xip_page (struct address_space *, sector_t, int);
  18#define mapping_is_xip(map) unlikely(map->a_ops->get_xip_page)
  19#else
  20#define mapping_is_xip(map)                     0
  21#define ext2_xip_verify_sb(sb)                  do { } while (0)
  22#define ext2_use_xip(sb)                        0
  23#define ext2_clear_xip_target(inode, chain)     0
  24#define ext2_get_xip_page                       NULL
  25#endif
  26