1 /* fs/ internal definitions 2 * 3 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 struct super_block; 13 14 /* 15 * block_dev.c 16 */ 17 #ifdef CONFIG_BLOCK 18 extern struct super_block *blockdev_superblock; 19 extern void __init bdev_cache_init(void); 20 21 static inline int sb_is_blkdev_sb(struct super_block *sb) 22 { 23 return sb == blockdev_superblock; 24 } 25 26 #else 27 static inline void bdev_cache_init(void) 28 { 29 } 30 31 static inline int sb_is_blkdev_sb(struct super_block *sb) 32 { 33 return 0; 34 } 35 #endif 36 37 /* 38 * char_dev.c 39 */ 40 extern void __init chrdev_init(void); 41 42 /* 43 * namespace.c 44 */ 45 extern int copy_mount_options(const void __user *, unsigned long *); 46 47 extern void free_vfsmnt(struct vfsmount *); 48 extern struct vfsmount *alloc_vfsmnt(const char *); 49 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int); 50 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *, 51 struct vfsmount *); 52 extern void release_mounts(struct list_head *); 53 extern void umount_tree(struct vfsmount *, int, struct list_head *); 54 extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int); 55 56 extern void __init mnt_init(void); 57