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Message-Id: <20060829180605.32596.95917.stgit@warthog.cambridge.redhat.com>
Date: Tue, 29 Aug 2006 19:06:05 +0100
From: David Howells <dhowells@...hat.com>
To: axboe@...nel.dk
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
dhowells@...hat.com
Subject: [PATCH 06/19] BLOCK: Move extern declarations out of fs/*.c into header files [try #6]
From: David Howells <dhowells@...hat.com>
Create a new header file, fs/internal.h, for common definitions local to the
sources in the fs/ directory.
Move extern definitions that should be in header files from fs/*.c to
fs/internal.h or other main header files where they span directories.
Signed-Off-By: David Howells <dhowells@...hat.com>
---
fs/binfmt_elf.c | 1 -
fs/block_dev.c | 1 +
fs/char_dev.c | 1 +
fs/compat.c | 8 +-------
fs/compat_ioctl.c | 2 --
fs/dcache.c | 4 +---
fs/fs-writeback.c | 3 +--
fs/internal.h | 36 ++++++++++++++++++++++++++++++++++++
fs/namespace.c | 12 +-----------
include/linux/compat.h | 1 +
include/linux/ramfs.h | 1 +
include/linux/sysfs.h | 9 +++++++++
include/linux/tty.h | 3 +++
13 files changed, 56 insertions(+), 26 deletions(-)
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 672a3b9..deb4269 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -46,7 +46,6 @@ #include <asm/page.h>
static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs);
static int load_elf_library(struct file *);
static unsigned long elf_map (struct file *, unsigned long, struct elf_phdr *, int, int);
-extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
#ifndef elf_addr_t
#define elf_addr_t unsigned long
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 045f988..1c146a2 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -22,6 +22,7 @@ #include <linux/mount.h>
#include <linux/uio.h>
#include <linux/namei.h>
#include <asm/uaccess.h>
+#include "internal.h"
struct bdev_inode {
struct block_device bdev;
diff --git a/fs/char_dev.c b/fs/char_dev.c
index 3483d3c..a35775b 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -23,6 +23,7 @@ #include <linux/mutex.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
+#include "internal.h"
static struct kobj_map *cdev_map;
diff --git a/fs/compat.c b/fs/compat.c
index e31e9cf..f7ce0f5 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -52,8 +52,7 @@ #include <net/sock.h> /* siocdevprivate
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
#include <asm/ioctls.h>
-
-extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
+#include "internal.h"
int compat_log = 1;
@@ -313,9 +312,6 @@ out:
#define IOCTL_HASHSIZE 256
static struct ioctl_trans *ioctl32_hash_table[IOCTL_HASHSIZE];
-extern struct ioctl_trans ioctl_start[];
-extern int ioctl_table_size;
-
static inline unsigned long ioctl32_hash(unsigned long cmd)
{
return (((cmd >> 6) ^ (cmd >> 4) ^ cmd)) % IOCTL_HASHSIZE;
@@ -838,8 +834,6 @@ static int do_nfs4_super_data_conv(void
return 0;
}
-extern int copy_mount_options (const void __user *, unsigned long *);
-
#define SMBFS_NAME "smbfs"
#define NCPFS_NAME "ncpfs"
#define NFS4_NAME "nfs4"
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 4063a93..ab74c9b 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1279,8 +1279,6 @@ static int loop_status(unsigned int fd,
return err;
}
-extern int tty_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg);
-
#ifdef CONFIG_VT
static int vt_check(struct file *file)
diff --git a/fs/dcache.c b/fs/dcache.c
index 1b4a3a3..ae6d053 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -32,6 +32,7 @@ #include <linux/security.h>
#include <linux/seqlock.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
+#include "internal.h"
int sysctl_vfs_cache_pressure __read_mostly = 100;
@@ -1742,9 +1743,6 @@ kmem_cache_t *filp_cachep __read_mostly;
EXPORT_SYMBOL(d_genocide);
-extern void bdev_cache_init(void);
-extern void chrdev_init(void);
-
void __init vfs_caches_init_early(void)
{
dcache_init_early();
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 892643d..0639024 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -22,8 +22,7 @@ #include <linux/writeback.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/buffer_head.h>
-
-extern struct super_block *blockdev_superblock;
+#include "internal.h"
/**
* __mark_inode_dirty - internal function
diff --git a/fs/internal.h b/fs/internal.h
new file mode 100644
index 0000000..c21ecd3
--- /dev/null
+++ b/fs/internal.h
@@ -0,0 +1,36 @@
+/* fs/ internal definitions
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@...hat.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.
+ */
+
+#include <linux/ioctl32.h>
+
+/*
+ * block_dev.c
+ */
+extern struct super_block *blockdev_superblock;
+extern void __init bdev_cache_init(void);
+
+/*
+ * char_dev.c
+ */
+extern void __init chrdev_init(void);
+
+/*
+ * compat_ioctl.c
+ */
+#ifdef CONFIG_COMPAT
+extern struct ioctl_trans ioctl_start[];
+extern int ioctl_table_size;
+#endif
+
+/*
+ * namespace.c
+ */
+extern int copy_mount_options(const void __user *, unsigned long *);
diff --git a/fs/namespace.c b/fs/namespace.c
index fa7ed6a..6100d84 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -22,21 +22,11 @@ #include <linux/namespace.h>
#include <linux/namei.h>
#include <linux/security.h>
#include <linux/mount.h>
+#include <linux/ramfs.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include "pnode.h"
-extern int __init init_rootfs(void);
-
-#ifdef CONFIG_SYSFS
-extern int __init sysfs_init(void);
-#else
-static inline int sysfs_init(void)
-{
- return 0;
-}
-#endif
-
/* spinlock for vfsmount related operations, inplace of dcache_lock */
__cacheline_aligned_in_smp DEFINE_SPINLOCK(vfsmount_lock);
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 9760753..967e748 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -227,6 +227,7 @@ static inline int compat_timespec_compar
asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
extern int compat_printk(const char *fmt, ...);
+extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 00b340b..b160fb1 100644
--- a/include/linux/ramfs.h
+++ b/include/linux/ramfs.h
@@ -17,5 +17,6 @@ #endif
extern const struct file_operations ramfs_file_operations;
extern struct vm_operations_struct generic_file_vm_ops;
+extern int __init init_rootfs(void);
#endif
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 1ea5d3c..73d10f3 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -10,6 +10,7 @@
#ifndef _SYSFS_H_
#define _SYSFS_H_
+#include <linux/init.h>
#include <asm/atomic.h>
struct kobject;
@@ -86,6 +87,9 @@ #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATT
#ifdef CONFIG_SYSFS
+extern int __init
+sysfs_init(void);
+
extern int
sysfs_create_dir(struct kobject *);
@@ -122,6 +126,11 @@ void sysfs_notify(struct kobject * k, ch
#else /* CONFIG_SYSFS */
+static inline int sysfs_init(void)
+{
+ return 0;
+}
+
static inline int sysfs_create_dir(struct kobject * k)
{
return 0;
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 04827ca..a236c67 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -308,6 +308,9 @@ extern void tty_ldisc_put(int);
extern void tty_wakeup(struct tty_struct *tty);
extern void tty_ldisc_flush(struct tty_struct *tty);
+extern int tty_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg);
+
extern struct mutex tty_mutex;
/* n_tty.c */
-
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