Subject: Re: [PATCH V4 0/2] mm: FAULT_AROUND_ORDER patchset performance data for powerpc

From: Rusty Russell <[email-masked]>
Date: Tue, 20 May 2014 15:52:07 +0930

"Kirill A. Shutemov" <[email-masked]> writes:
> Andrew Morton wrote:
>> On Mon, 19 May 2014 16:23:07 -0700 (PDT) Hugh Dickins <[email-masked]> wrote:
>> 
>> > Shouldn't FAULT_AROUND_ORDER and fault_around_order be changed to be
>> > the order of the fault-around size in bytes, and fault_around_pages()
>> > use 1UL << (fault_around_order - PAGE_SHIFT)
>> 
>> Yes.  And shame on me for missing it (this time!) at review.
>> 
>> There's still time to fix this.  Patches, please.
>
> Here it is. Made at 3.30 AM, build tested only.

Prefer on top of Maddy's patch which makes it always a variable, rather
than CONFIG_DEBUG_FS.  It's got enough hair as it is.

Cheers,
Rusty.