[PATCH 3.2-rc5] fs: Mark some functions static.

[PATCH 3.2-rc5] fs: Mark some functions static.

[Tetsuo Handa]

Commit 0e028465 "exec: unify do_execve/compat_do_execve code" removed reference
to bprm_mm_init()/prepare_bprm_creds()/check_unsafe_exec()/free_bprm() from
fs/compat.c.

Signed-off-by: Tetsuo Handa <penguin-kenrel@I-love.SAKURA.ne.jp>
-----
diff --git a/fs/exec.c b/fs/exec.c
index 3625464..c1993f2 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -367,7 +367,7 @@ static bool valid_arg_len(struct linux_binprm *bprm, long len)
  * flags, permissions, and offset, so we use temporary values.  We'll update
  * them later in setup_arg_pages().
  */
-int bprm_mm_init(struct linux_binprm *bprm)
+static int bprm_mm_init(struct linux_binprm *bprm)
 {
 	int err;
 	struct mm_struct *mm = NULL;
@@ -1178,7 +1178,7 @@ EXPORT_SYMBOL(setup_new_exec);
  * Or, if exec fails before, free_bprm() should release ->cred and
  * and unlock.
  */
-int prepare_bprm_creds(struct linux_binprm *bprm)
+static int prepare_bprm_creds(struct linux_binprm *bprm)
 {
 	if (mutex_lock_interruptible(&current->signal->cred_guard_mutex))
 		return -ERESTARTNOINTR;
@@ -1191,7 +1191,7 @@ int prepare_bprm_creds(struct linux_binprm *bprm)
 	return -ENOMEM;
 }
 
-void free_bprm(struct linux_binprm *bprm)
+static void free_bprm(struct linux_binprm *bprm)
 {
 	free_arg_pages(bprm);
 	if (bprm->cred) {
@@ -1225,7 +1225,7 @@ EXPORT_SYMBOL(install_exec_creds);
  * - the caller must hold ->cred_guard_mutex to protect against
  *   PTRACE_ATTACH
  */
-int check_unsafe_exec(struct linux_binprm *bprm)
+static int check_unsafe_exec(struct linux_binprm *bprm)
 {
 	struct task_struct *p = current, *t;
 	unsigned n_fs;
diff --git a/fs/internal.h b/fs/internal.h
index fe327c2..6aa3f96 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -52,11 +52,6 @@ static inline int __sync_blockdev(struct block_device *bdev, int wait)
 extern void __init chrdev_init(void);
 
 /*
- * exec.c
- */
-extern int check_unsafe_exec(struct linux_binprm *);
-
-/*
  * namespace.c
  */
 extern int copy_mount_options(const void __user *, unsigned long *);
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index fd88a39..0410a1b 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -126,14 +126,11 @@ extern int suid_dumpable;
 extern int setup_arg_pages(struct linux_binprm * bprm,
 			   unsigned long stack_top,
 			   int executable_stack);
-extern int bprm_mm_init(struct linux_binprm *bprm);
 extern int copy_strings_kernel(int argc, const char *const *argv,
 			       struct linux_binprm *bprm);
-extern int prepare_bprm_creds(struct linux_binprm *bprm);
 extern void install_exec_creds(struct linux_binprm *bprm);
 extern void do_coredump(long signr, int exit_code, struct pt_regs *regs);
 extern void set_binfmt(struct linux_binfmt *new);
-extern void free_bprm(struct linux_binprm *);
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_BINFMTS_H */