[PATCH] m68k: introduce setup_thread_stack() and end_of_stack()

encapsulates the rest of arch-dependent operations with thread_info access.
Two new helpers - setup_thread_stack() and end_of_stack().  For normal case
the former consists of copying thread_info of parent to new thread_info and
the latter returns pointer immediately past the end of thread_info.

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 7ef352ce347b..2c70c9cdf5dc 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -171,10 +171,9 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
                 return NULL;
         }
 
-        *ti = *orig->thread_info;
         *tsk = *orig;
         tsk->thread_info = ti;
-        ti->task = tsk;
+        setup_thread_stack(tsk, orig);
 
         /* One for us, one for whoever does the "release_task()" (usually parent) */
         atomic_set(&tsk->usage,2);