/* fs/ internal definitions * * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ struct super_block;struct file_system_type;struct linux_binprm;struct path;struct mount; /* * block_dev.c */#ifdef CONFIG_BLOCKextern void __init bdev_cache_init(void); extern int __sync_blockdev(struct block_device *bdev, int wait); #elsestatic inline void bdev_cache_init(void){} static inline int __sync_blockdev(struct block_device *bdev, int wait){	return 0;}#endif /* * char_dev.c */extern void __init chrdev_init(void); /* * namei.c */extern int __inode_permission(struct inode *, int);extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);extern int vfs_path_lookup(struct dentry *, struct vfsmount *,			   const char *, unsigned int, struct path *); /* * namespace.c */extern int copy_mount_options(const void __user *, unsigned long *);extern int copy_mount_string(const void __user *, char **); extern struct vfsmount *lookup_mnt(struct path *);extern int finish_automount(struct vfsmount *, struct path *); extern int sb_prepare_remount_readonly(struct super_block *); extern void __init mnt_init(void); extern int __mnt_want_write(struct vfsmount *);extern int __mnt_want_write_file(struct file *);extern void __mnt_drop_write(struct vfsmount *);extern void __mnt_drop_write_file(struct file *); /* * fs_struct.c */extern void chroot_fs_refs(const struct path *, const struct path *); /* * file_table.c */extern struct file *get_empty_filp(void); /* * super.c */extern int do_remount_sb(struct super_block *, int, void *, int);extern bool grab_super_passive(struct super_block *sb);extern struct dentry *mount_fs(struct file_system_type *,			       int, const char *, void *);extern struct super_block *user_get_super(dev_t); /* * open.c */struct open_flags {	int open_flag;	umode_t mode;	int acc_mode;	int intent;	int lookup_flags;};extern struct file *do_filp_open(int dfd, struct filename *pathname,		const struct open_flags *op);extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,		const char *, const struct open_flags *); extern long do_handle_open(int mountdirfd,			   struct file_handle __user *ufh, int open_flag);extern int open_check_o_direct(struct file *f); /* * inode.c */extern spinlock_t inode_sb_list_lock;extern long prune_icache_sb(struct super_block *sb, unsigned long nr_to_scan,			    int nid);extern void inode_add_lru(struct inode *inode); /* * fs-writeback.c */extern void inode_wb_list_del(struct inode *inode); extern long get_nr_dirty_inodes(void);extern void evict_inodes(struct super_block *);extern int invalidate_inodes(struct super_block *, bool); /* * dcache.c */extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);extern int d_set_mounted(struct dentry *dentry);extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,			    int nid); /* * read_write.c */extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);extern int rw_verify_area(int, struct file *, const loff_t *, size_t); /* * splice.c */extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,		loff_t *opos, size_t len, unsigned int flags); /* * pipe.c */extern const struct file_operations pipefifo_fops;