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gerrit-public.fairphone.software / kernel / msm-4.19 / fdf804210f297b7a114fa7a216c2ab65b0f693da / . / fs / internal.h
blob: 18bc216ea09d95ecff126ef96987ff786b5cbcb1 [file] [log] [blame]
David Howells07f3f05c2006-09-30 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 Howells07f3f05c2006-09-30 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 Howells07f3f05c2006-09-30 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 Howells07f3f05c2006-09-30 20:52:18 +0200[diff] [blame]39/*
40 * char_dev.c
41 */
42extern void __init chrdev_init(void);
43
44/*
David Howells07f3f05c2006-09-30 20:52:18 +0200[diff] [blame]45 * namespace.c
46 */
47extern int copy_mount_options(const void __user *, unsigned long *);
Vegard Nossumeca6f532009-09-18 13:05:45 -0700[diff] [blame]48extern int copy_mount_string(const void __user *, char **);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]49
David Howells0f60f242011-03-21 14:28:58 +0000[diff] [blame]50extern struct vfsmount *lookup_mnt(struct path *);
Al Viro19a167a2011-01-17 01:35:23 -0500[diff] [blame]51extern int finish_automount(struct vfsmount *, struct path *);
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]52
Al Virof03c6592011-01-14 22:30:21 -0500[diff] [blame]53extern void mnt_make_longterm(struct vfsmount *);
54extern void mnt_make_shortterm(struct vfsmount *);
Miklos Szeredi4ed5e822011-11-21 12:11:31 +0100[diff] [blame]55extern int sb_prepare_remount_readonly(struct super_block *);
Al Virof03c6592011-01-14 22:30:21 -0500[diff] [blame]56
Al Viro6d59e7f2008-03-22 15:48:17 -0400[diff] [blame]57extern void __init mnt_init(void);
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]58
Andi Kleeneea62f82012-05-08 13:32:24 +0930[diff] [blame]59extern struct lglock vfsmount_lock;
Nick Piggin99b7db72010-08-18 04:37:39 +1000[diff] [blame]60
Al Viro47cd8132010-02-05 02:01:14 -0500[diff] [blame]61
Al Viro3e93cd62009-03-29 19:00:13 -0400[diff] [blame]62/*
63 * fs_struct.c
64 */
65extern void chroot_fs_refs(struct path *, struct path *);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]66
67/*
68 * file_table.c
69 */
Nick Piggind996b622010-08-18 04:37:36 +1000[diff] [blame]70extern void file_sb_list_add(struct file *f, struct super_block *sb);
71extern void file_sb_list_del(struct file *f);
npiggin@suse.de864d7c42009-04-26 20:25:56 +1000[diff] [blame]72extern void mark_files_ro(struct super_block *);
Eric Parise81e3f42009-12-04 15:47:36 -0500[diff] [blame]73extern struct file *get_empty_filp(void);
Al Viro62c69432009-05-07 03:12:29 -0400[diff] [blame]74
75/*
76 * super.c
77 */
78extern int do_remount_sb(struct super_block *, int, void *, int);
Dave Chinner12ad3ab2011-07-08 14:14:41 +1000[diff] [blame]79extern bool grab_super_passive(struct super_block *sb);
Al Viro9d412a42011-03-17 22:08:28 -0400[diff] [blame]80extern struct dentry *mount_fs(struct file_system_type *,
81 int, const char *, void *);
Al Virocf31e702012-01-02 22:28:36 -0500[diff] [blame]82extern struct super_block *user_get_super(dev_t);
Al Viro482928d2009-12-19 10:10:39 -0500[diff] [blame]83
84/*
85 * open.c
86 */
87struct nameidata;
88extern struct file *nameidata_to_filp(struct nameidata *);
89extern void release_open_intent(struct nameidata *);
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]90struct open_flags {
91 int open_flag;
Al Viroa218d0f2011-11-21 14:59:34 -0500[diff] [blame]92 umode_t mode;
Al Viro47c805d2011-02-23 17:44:09 -0500[diff] [blame]93 int acc_mode;
94 int intent;
95};
96extern struct file *do_filp_open(int dfd, const char *pathname,
97 const struct open_flags *op, int lookup_flags);
Al Viro73d049a2011-03-11 12:08:24 -0500[diff] [blame]98extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
99 const char *, const struct open_flags *, int lookup_flags);
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]100
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]101extern long do_handle_open(int mountdirfd,
102 struct file_handle __user *ufh, int open_flag);
Miklos Szeredi90ad1a82012-05-21 17:30:15 +0200[diff] [blame]103extern int open_check_o_direct(struct file *f);
Aneesh Kumar K.Vbecfd1f2011-01-29 18:43:26 +0530[diff] [blame]104
Al Viroa8dade32010-10-24 11:13:10 -0400[diff] [blame]105/*
106 * inode.c
107 */
Dave Chinner55fa6092011-03-22 22:23:40 +1100[diff] [blame]108extern spinlock_t inode_sb_list_lock;
109
Dave Chinnera66979a2011-03-22 22:23:41 +1100[diff] [blame]110/*
111 * fs-writeback.c
112 */
113extern void inode_wb_list_del(struct inode *inode);
114
Dave Chinnercffbc8a2010-10-23 05:03:02 -0400[diff] [blame]115extern int get_nr_dirty_inodes(void);
Al Viroa4cdbd82010-10-29 05:49:13 -0400[diff] [blame]116extern void evict_inodes(struct super_block *);
NeilBrown93b270f2011-02-24 17:25:47 +1100[diff] [blame]117extern int invalidate_inodes(struct super_block *, bool);
Al Viroa4464db2011-07-07 15:03:58 -0400[diff] [blame]118
119/*
120 * dcache.c
121 */
122extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);