Re: [PATCH] Simplify PTRACE_foo constants and PTRACE_SETOPTIONS code

[Tejun Heo]

Hello,

Mostly looks good to me.  Just a small nit.

On Wed, Sep 07, 2011 at 11:36:37PM +0200, Denys Vlasenko wrote:
>  static int ptrace_setoptions(struct task_struct *child, unsigned long data)
>  {
> +	unsigned flags;
>  
> +	if (data & ~(long)PTRACE_O_MASK) {

Can we use (unsigned long) here?  Signed extensions have a nasty way
of sneaking up on you.

> +		child->ptrace &= ~PT_TRACE_MASK; /* historical bug */

And it would be great if it explains what the historical bug was and
what the intended behavior is.

Other than that,

 Acked-by: Tejun Heo <tj@xxxxxxxxxx>

Thank you.

-- 
tejun
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