On Sun, Jan 19, 2014 at 01:41:34AM +0200, Kirill A. Shutemov wrote:
> On Thu, Jan 16, 2014 at 03:01:43PM -0600, Alex Thorlton wrote:
> > diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
> > index 91672e2..475f59f 100644
> > --- a/include/linux/huge_mm.h
> > +++ b/include/linux/huge_mm
On Thu, Jan 16, 2014 at 03:01:43PM -0600, Alex Thorlton wrote:
> diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
> index 91672e2..475f59f 100644
> --- a/include/linux/huge_mm.h
> +++ b/include/linux/huge_mm.h
> @@ -1,6 +1,8 @@
> #ifndef _LINUX_HUGE_MM_H
> #define _LINUX_HUGE_MM_H
>
On Fri, Jan 17, 2014 at 11:54:09AM -0800, Andy Lutomirski wrote:
> Usual nit: please return -EINVAL if unused args are nonzero. This
> makes it possible to extend these APIs in the future.
Got it. Thanks, Andy!
- Alex
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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);
>
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 =
On Thu, Jan 16, 2014 at 1:01 PM, Alex Thorlton wrote:
> This patch adds an mm flag (MMF_THP_DISABLE) to disable transparent
> hugepages using prctl.
>
> --- a/kernel/sys.c
> +++ b/kernel/sys.c
> @@ -1998,6 +1998,17 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long,
> arg2, unsigned long, arg3
This patch adds an mm flag (MMF_THP_DISABLE) to disable transparent
hugepages using prctl.
Changes for v2:
* Pulled code for prctl helper functions into prctl to make things more
concise.
* Changed PRCTL_SET_THP_DISABLE to accept an argument to set/clear the
THP_DISABLE bit, instead of having
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