uml: remove task_protections

Replaced task_protections with stack_protections since they do the same
thing, and task_protections was misnamed anyway.

This needs THREAD_SIZE, so that's imported via common-offsets.h

Also tidied up the code in the vicinity.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/kernel/tt/exec_kern.c b/arch/um/kernel/tt/exec_kern.c
index 98e2174..40126cb 100644
--- a/arch/um/kernel/tt/exec_kern.c
+++ b/arch/um/kernel/tt/exec_kern.c
@@ -57,7 +57,7 @@
 	enable_timer();
 	free_page(stack);
 	protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 1, 0, 1);
-	task_protections((unsigned long) current_thread);
+	stack_protections((unsigned long) current_thread);
 	force_flush_all();
 	unblock_signals();
 }
diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c
index c631303..74347ad 100644
--- a/arch/um/kernel/tt/process_kern.c
+++ b/arch/um/kernel/tt/process_kern.c
@@ -209,7 +209,7 @@
 	if(current->mm != current->parent->mm)
 		protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 
 			       1, 0, 1);
-	task_protections((unsigned long) current_thread);
+	stack_protections((unsigned long) current_thread);
 
 	free_page(current->thread.temp_stack);
 	local_irq_disable();
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 1cf954a..ecc458f 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -459,7 +459,7 @@
 
 	uml_postsetup();
 
-	task_protections((unsigned long) &init_thread_info);
+	stack_protections((unsigned long) &init_thread_info);
 	os_flush_stdout();
 
 	return CHOOSE_MODE(start_uml_tt(), start_uml_skas());