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 *, sector_t); 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} 17int ext2_get_xip_mem(struct address_space *, pgoff_t, int, 18 void **, unsigned long *); 19#define mapping_is_xip(map) unlikely(map->a_ops->get_xip_mem) 20#else 21#define mapping_is_xip(map) 0 22#define ext2_xip_verify_sb(sb) do { } while (0) 23#define ext2_use_xip(sb) 0 24#define ext2_clear_xip_target(inode, chain) 0 25#define ext2_get_xip_mem NULL 26#endif 27