[PATCH V4 0/2] mm: FAULT_AROUND_ORDER patchset performance data for powerpc
akpm at linux-foundation.org
Tue May 20 17:32:01 EST 2014
On Tue, 20 May 2014 15:52:07 +0930 Rusty Russell <rusty at rustcorp.com.au> wrote:
> "Kirill A. Shutemov" <kirill.shutemov at linux.intel.com> writes:
> > Andrew Morton wrote:
> >> On Mon, 19 May 2014 16:23:07 -0700 (PDT) Hugh Dickins <hughd at google.com> 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.
We're at 3.15-rc5 and this interface should be finalised for 3.16. So
Kirrill's patch is pretty urgent and should come first.
Well. It's only a debugfs interface at this stage so we are allowed to
change it later, but it's better not to.
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