[RFC] mm:fix zero_page huge_zero_page rss/pss statistic

Wang, Yalin Yalin.Wang at sonymobile.com
Thu Dec 11 17:59:15 PST 2014

> -----Original Message-----
> From: Kirill A. Shutemov [mailto:kirill at shutemov.name]
> Sent: Wednesday, December 10, 2014 7:06 PM
> To: Wang, Yalin
> Cc: 'Andrew Morton'; 'Konstantin Khlebnikov'; 'linux-
> kernel at vger.kernel.org'; 'linux-mm at kvack.org'; 'linux-arm-
> kernel at lists.infradead.org'; 'n-horiguchi at ah.jp.nec.com'; 'oleg at redhat.com';
> 'gorcunov at openvz.org'; 'pfeiner at google.com'
> Subject: Re: [RFC] mm:fix zero_page huge_zero_page rss/pss statistic
> On Wed, Dec 10, 2014 at 03:22:21PM +0800, Wang, Yalin wrote:
> > smaps_pte_entry() doesn't ignore zero_huge_page, but it ignore
> > zero_page, because vm_normal_page() will ignore it. We remove
> > vm_normal_page() call, because walk_page_range() have ignore VM_PFNMAP
> > vma maps, it's safe to just use pfn_valid(), so that we can also
> > consider zero_page to be a valid page.
> We fixed huge zero page accounting in smaps recentely. See mm tree.
I can't find the git, could you send me a link?
Thank you !

More information about the linux-arm-kernel mailing list