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