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 *);
10 extern int ext2_clear_xip_target (struct inode *, sector_t);
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 }
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)
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
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