Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[firefly-linux-kernel-4.4.55.git] / 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
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