Re: [RFC PATCHv2 1/2] Add mm flag to control THP

[Alex Thorlton]

On Fri, Jan 17, 2014 at 09:09:23PM +0100, Oleg Nesterov wrote:
> On 01/16, Alex Thorlton wrote:
> >
> > +	case PR_GET_THP_DISABLE:
> > +		error = put_user(test_bit(MMF_THP_DISABLE,
> > +				 &me->mm->flags),
> > +				 (int __user *) arg2);
> > +		break;
> 
> Do we really want put_user?
> 
> 	error = test_bit(MMF_THP_DISABLE);
> 
> can work too and looks simpler (and to me simpler to use in userspace).

That makes sense.  I'll change that; definitely easier to use from
userspace that way.

- Alex
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