From mboxrd@z Thu Jan 1 00:00:00 1970 From: kirill@shutemov.name (Kirill A. Shutemov) Date: Fri, 12 Dec 2014 13:10:09 +0200 Subject: [RFC] mm:fix zero_page huge_zero_page rss/pss statistic In-Reply-To: <35FD53F367049845BC99AC72306C23D103E688B31406@CNBJMBX05.corpusers.net> References: <35FD53F367049845BC99AC72306C23D103E688B313EE@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B313F2@CNBJMBX05.corpusers.net> <20141205143134.37139da2208c654a0d3cd942@linux-foundation.org> <35FD53F367049845BC99AC72306C23D103E688B313F4@CNBJMBX05.corpusers.net> <20141208114601.GA28846@node.dhcp.inet.fi> <35FD53F367049845BC99AC72306C23D103E688B313FB@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D103E688B31403@CNBJMBX05.corpusers.net> <20141210110556.GA10630@node.dhcp.inet.fi> <35FD53F367049845BC99AC72306C23D103E688B31406@CNBJMBX05.corpusers.net> Message-ID: <20141212111009.GA25426@node.dhcp.inet.fi> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Dec 12, 2014 at 09:59:15AM +0800, Wang, Yalin wrote: > > -----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. > > > Hi > I can't find the git, could you send me a link? http://git.cmpxchg.org/cgit.cgi/linux-mmotm.git/ or just take linux-next. The fix is already in Linus' tree. -- Kirill A. Shutemov