[PATCH] sh: 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>

arch/sh/kernel/process.c

@@ -270,7 +270,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 	if (user_mode(regs)) {
 		childregs->regs[15] = usp;
 	} else {
-		childregs->regs[15] = (unsigned long)p->thread_info + THREAD_SIZE;
+		childregs->regs[15] = (unsigned long)task_stack_page(p) + THREAD_SIZE;
 	}
         if (clone_flags & CLONE_SETTLS) {
 		childregs->gbr = childregs->regs[0];

include/asm-sh/ptrace.h

@@ -93,11 +93,11 @@ extern void show_regs(struct pt_regs *);
 
 #ifdef CONFIG_SH_DSP
 #define task_pt_regs(task) \
-	((struct pt_regs *) ((unsigned long)(task)->thread_info + THREAD_SIZE \
+	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
 		 - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
 #else
 #define task_pt_regs(task) \
-	((struct pt_regs *) ((unsigned long)(task)->thread_info + THREAD_SIZE \
+	((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
 		 - sizeof(unsigned long)) - 1)
 #endif