[patch, for 2.6.29] x86, bts: remove bad warning

[Markus Metzger <markus.t.metzger@intel.com>]

In case a ptraced task is reaped (while the tracer is still attached),
ds_exit_thread() is called before ptrace_exit(). The latter will
release the bts_tracer and remove the thread's ds_ctx.
The former will WARN() if the context is not NULL.

Oleg Nesterov submitted patches that move ptrace_exit() before
exit_thread() and thus reverse the order of the above calls.

Remove the bad warning. I will add it again when Oleg's changes are in.


Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
---

Index: gits/arch/x86/kernel/ds.c
===================================================================
--- gits.orig/arch/x86/kernel/ds.c	2009-03-05 08:14:38.000000000 +0100
+++ gits/arch/x86/kernel/ds.c	2009-03-05 08:15:21.000000000 +0100
@@ -1029,5 +1029,4 @@ void ds_copy_thread(struct task_struct *
 
 void ds_exit_thread(struct task_struct *tsk)
 {
-	WARN_ON(tsk->thread.ds_ctx);
 }
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