Bury the conditionals from kernel_thread/kernel_execve series

All architectures have
	CONFIG_GENERIC_KERNEL_THREAD
	CONFIG_GENERIC_KERNEL_EXECVE
	__ARCH_WANT_SYS_EXECVE
None of them have __ARCH_WANT_KERNEL_EXECVE and there are only two callers
of kernel_execve() (which is a trivial wrapper for do_execve() now) left.
Kill the conditionals and make both callers use do_execve().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2 files changed, 3 insertions, 5 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 54073078343..389712ffc0a 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1623,7 +1623,6 @@ long do_fork(unsigned long clone_flags,
         return nr;
 }
 
-#ifdef CONFIG_GENERIC_KERNEL_THREAD
 /*
  * Create a kernel thread.
  */
@@ -1632,7 +1631,6 @@ pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
         return do_fork(flags|CLONE_VM|CLONE_UNTRACED, (unsigned long)fn,
                 (unsigned long)arg, NULL, NULL);
 }
-#endif
 
 #ifdef __ARCH_WANT_SYS_FORK
 SYSCALL_DEFINE0(fork)
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 1c317e38683..0023a87e8de 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -219,9 +219,9 @@ static int ____call_usermodehelper(void *data)
 
         commit_creds(new);
 
-        retval = kernel_execve(sub_info->path,
-                               (const char *const *)sub_info->argv,
-                               (const char *const *)sub_info->envp);
+        retval = do_execve(sub_info->path,
+                           (const char __user *const __user *)sub_info->argv,
+                           (const char __user *const __user *)sub_info->envp);
         if (!retval)
                 return 0;