LXR linux/fs/internal.h

   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
  12struct super_block;
  13
  14/*
  15 * block_dev.c
  16 */
  17#ifdef CONFIG_BLOCK
  18extern struct super_block *blockdev_superblock;
  19extern void __init bdev_cache_init(void);
  20
  21static inline int sb_is_blkdev_sb(struct super_block *sb)
  22{
  23        return sb == blockdev_superblock;
  24}
  25
  26#else
  27static inline void bdev_cache_init(void)
  28{
  29}
  30
  31static inline int sb_is_blkdev_sb(struct super_block *sb)
  32{
  33        return 0;
  34}
  35#endif
  36
  37/*
  38 * char_dev.c
  39 */
  40extern void __init chrdev_init(void);
  41
  42/*
  43 * namespace.c
  44 */
  45extern int copy_mount_options(const void __user *, unsigned long *);
  46
  47extern void free_vfsmnt(struct vfsmount *);
  48extern struct vfsmount *alloc_vfsmnt(const char *);
  49extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
  50extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
  51                                struct vfsmount *);
  52extern void release_mounts(struct list_head *);
  53extern void umount_tree(struct vfsmount *, int, struct list_head *);
  54extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
  55
  56extern void __init mnt_init(void);
  57