From mboxrd@z Thu Jan 1 00:00:00 1970 From: kirill@shutemov.name (Kirill A. Shutemov) Date: Wed, 10 Dec 2014 13:05:56 +0200 Subject: [RFC] mm:fix zero_page huge_zero_page rss/pss statistic In-Reply-To: <35FD53F367049845BC99AC72306C23D103E688B31403@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> Message-ID: <20141210110556.GA10630@node.dhcp.inet.fi> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. -- Kirill A. Shutemov