[net-next-2.6.git] / fs / ext2 / xip.h

/*
 *  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
Commit	Line	Data
6d79125b CO	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
	9	extern void ext2_xip_verify_sb (struct super_block *);
70688e4d	10	extern int ext2_clear_xip_target (struct inode *, sector_t);
6d79125b CO	11
	12	static 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	}
70688e4d NP	17	int 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)
6d79125b CO	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
70688e4d	25	#define ext2_get_xip_mem NULL
6d79125b	26	#endif