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review.evervolv.com / android_kernel_oneplus_msm8996 / 0b3966e40c99afeb89849b5cf7b100a3bb4271cd / . / fs / internal.h
blob: 2f6af7f645ebc3d8862da4edb1d71bc811c8d788 [file] [log] [blame]
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]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
Nick Piggin99b7db72010-08-18 04:37:39 +1000[diff] [blame]12#include <linux/lglock.h>
13
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]14struct super_block;
Al Viro9d412a42011-03-17 22:08:28 -0400[diff] [blame]15struct file_system_type;
David Howellsa6f76f22008-11-14 10:39:24 +1100[diff] [blame]16struct linux_binprm;
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]17struct path;
Al Viroc7105362011-11-24 18:22:03 -0500[diff] [blame]18struct mount;
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]19
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]20/*
21 * block_dev.c
22 */
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]23#ifdef CONFIG_BLOCK
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]24extern void __init bdev_cache_init(void);
25
Jan Kara5cee5812009-04-27 16:43:51 +0200[diff] [blame]26extern int __sync_blockdev(struct block_device *bdev, int wait);
27
Andrew Morton5e6d12b2006-08-31 12:55:23 +0200[diff] [blame]28#else
29static inline void bdev_cache_init(void)
30{
31}
32
Jan Kara5cee5812009-04-27 16:43:51 +0200[diff] [blame]33static inline int __sync_blockdev(struct block_device *bdev, int wait)
34{
35 return 0;
36}
David Howells93614012006-09-30 20:45:40 +0200[diff] [blame]37#endif
David Howells7b0de422006-08-29 19:06:07 +0100[diff] [blame]38
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]39/*
40 * char_dev.c
41 */
42extern void __init chrdev_init(void);
43
44/*
David Howells0bdaea92012-06-25 12:55:46 +0100[diff] [blame]45 * namei.c
46 */
47extern int __inode_permission(struct inode *, int);
48
49/*
David Howells07f3f052006-09-30 20:52:18 +0200[diff] [blame]50 * namespace.c
51 */
52extern int copy_mount_options(const void __user *, unsigned long *);
Vegard Nossumeca6f532009-09-18 13:05:45 -0700[diff] [blame]53extern int copy_mount_string(const void __user *, char **);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]54
David Howells0f60f242011-03-21 14:28:58 +0000[diff] [blame]55extern struct vfsmount *lookup_mnt(struct path *);
Al Viro19a167a2011-01-17 01:35:23 -0500[diff] [blame]56extern int finish_automount(struct vfsmount *, struct path *);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]57
Miklos Szeredi4ed5e822011-11-21 12:11:31 +0100[diff] [blame]58extern int sb_prepare_remount_readonly(struct super_block *);
Al Virof03c6592011-01-14 22:30:21 -0500[diff] [blame]59
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]60extern void __init mnt_init(void);
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]61
Andi Kleeneea62f82012-05-08 13:32:24 +0930[diff] [blame]62extern struct lglock vfsmount_lock;
Nick Piggin99b7db72010-08-18 04:37:39 +1000[diff] [blame]63
Jan Karaeb04c282012-06-12 16:20:35 +0200[diff] [blame]64extern int __mnt_want_write(struct vfsmount *);
65extern int __mnt_want_write_file(struct file *);
66extern void __mnt_drop_write(struct vfsmount *);
67extern void __mnt_drop_write_file(struct file *);
Al Viro47cd8132010-02-05 02:01:14 -0500[diff] [blame]68
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]69/*
70 * fs_struct.c
71 */
72extern void chroot_fs_refs(struct path *, struct path *);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]73
74/*
75 * file_table.c
76 */
Nick Piggind996b622010-08-18 04:37:36 +1000[diff] [blame]77extern void file_sb_list_add(struct file *f, struct super_block *sb);
78extern void file_sb_list_del(struct file *f);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]79extern void mark_files_ro(struct super_block *);
Eric Parise81e3f42009-12-04 15:47:36 -0500[diff] [blame]80extern struct file *get_empty_filp(void);
Al Viro62c69432009-05-07 03:12:29 -0400[diff] [blame]81
82/*
83 * super.c
84 */
85extern int do_remount_sb(struct super_block *, int, void *, int);
Dave Chinner12ad3ab2011-07-08 14:14:41 +1000[diff] [blame]86extern bool grab_super_passive(struct super_block *sb);
Al Viro9d412a42011-03-17 22:08:28 -0400[diff] [blame]87extern struct dentry *mount_fs(struct file_system_type *,
88 int, const char *, void *);
Al Virocf31e702012-01-02 22:28:36 -0500[diff] [blame]89extern struct super_block *user_get_super(dev_t);
Al Viro482928d2009-12-19 10:10:39 -0500[diff] [blame]90
91/*
92 * open.c
93 */
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]94struct open_flags {
95 int open_flag;
Al Viroa218d0f2011-11-21 14:59:34 -0500[diff] [blame]96 umode_t mode;
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]97 int acc_mode;
98 int intent;
99};
Jeff Layton669abf42012-10-10 16:43:10 -0400[diff] [blame]100extern struct file *do_filp_open(int dfd, struct filename *pathname,
101 const struct open_flags *op, int flags);
Al Viro73d049a2011-03-11 12:08:24 -0500[diff] [blame]102extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
103 const char *, const struct open_flags *, int lookup_flags);
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]104
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]105extern long do_handle_open(int mountdirfd,
106 struct file_handle __user *ufh, int open_flag);
Miklos Szeredi90ad1a82012-05-21 17:30:15 +0200[diff] [blame]107extern int open_check_o_direct(struct file *f);
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]108
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]109/*
110 * inode.c
111 */
Dave Chinner55fa6092011-03-22 22:23:40 +1100[diff] [blame]112extern spinlock_t inode_sb_list_lock;
Jan Kara4eff96d2012-11-26 16:29:51 -0800[diff] [blame]113extern void inode_add_lru(struct inode *inode);
Dave Chinner55fa6092011-03-22 22:23:40 +1100[diff] [blame]114
Dave Chinnera66979a2011-03-22 22:23:41 +1100[diff] [blame]115/*
116 * fs-writeback.c
117 */
118extern void inode_wb_list_del(struct inode *inode);
119
Dave Chinnercffbc8a2010-10-23 05:03:02 -0400[diff] [blame]120extern int get_nr_dirty_inodes(void);
Al Viroa4cdbd82010-10-29 05:49:13 -0400[diff] [blame]121extern void evict_inodes(struct super_block *);
NeilBrown93b270f2011-02-24 17:25:47 +1100[diff] [blame]122extern int invalidate_inodes(struct super_block *, bool);
Al Viroa4464db2011-07-07 15:03:58 -0400[diff] [blame]123
124/*
125 * dcache.c
126 */
127extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);