Re: [PATCH 4/4] mm: prepare page_referenced() and page_idle to new THP refcounting
From: Kirill A. Shutemov
Date: Sun Nov 08 2015 - 18:40:37 EST
On Fri, Nov 06, 2015 at 02:39:00PM -0800, Andrew Morton wrote:
> On Fri, 6 Nov 2015 12:29:21 +0200 "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx> wrote:
> > > page_mapcount() is getting pretty bad too.
> > Do you want me to uninline slow path (PageCompound())?
> I guess so. Uninlining all of page_mapcount() does this:
> text data bss dec hex filename
> 973702 273954 831512 2079168 1fb9c0 mm/built-in.o-before
> 970148 273954 831000 2075102 1fa9de mm/built-in.o-after
> That's quite a bit of bloat.
> I don't know why bss changed; this usually (always?) happens. Seems
Here it is.