[PATCH] m68k: task_stack_page()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c
index 13d1093..3f9cb55 100644 (file)
--- a/arch/m68k/kernel/process.c
+++ b/arch/m68k/kernel/process.c
@@ -238,10 +238,9 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 {
        struct pt_regs * childregs;
        struct switch_stack * childstack, *stack;
-       unsigned long stack_offset, *retp;
+       unsigned long *retp;
 
-       stack_offset = THREAD_SIZE - sizeof(struct pt_regs);
-       childregs = (struct pt_regs *) ((unsigned long) (p->thread_info) + stack_offset);
+       childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1;
 
        *childregs = *regs;
        childregs->d0 = 0;
@@ -386,7 +385,7 @@ unsigned long get_wchan(struct task_struct *p)
        if (!p || p == current || p->state == TASK_RUNNING)
                return 0;
 
-       stack_page = (unsigned long)(p->thread_info);
+       stack_page = (unsigned long)task_stack_page(p);
        fp = ((struct switch_stack *)p->thread.ksp)->a6;
        do {
                if (fp < stack_page+sizeof(struct thread_info) ||