From d336e94e448a514607551026f0624329b6af52c5 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Thu, 6 Jul 2017 15:38:07 -0700 Subject: mm, vmstat: skip reporting offline pages in pagetypeinfo pagetypeinfo_showblockcount_print skips over invalid pfns but it would report pages which are offline because those have a valid pfn. Their migrate type is misleading at best. Now that we have pfn_to_online_page() we can use it instead of pfn_valid() and fix this. [mhocko@suse.com: fix build] Link: http://lkml.kernel.org/r/20170519072225.GA13041@dhcp22.suse.cz Link: http://lkml.kernel.org/r/20170515085827.16474-11-mhocko@kernel.org Signed-off-by: Michal Hocko Reported-by: Joonsoo Kim Acked-by: Vlastimil Babka Cc: Andi Kleen Cc: Andrea Arcangeli Cc: Balbir Singh Cc: Dan Williams Cc: Daniel Kiper Cc: David Rientjes Cc: Heiko Carstens Cc: Igor Mammedov Cc: Jerome Glisse Cc: Martin Schwidefsky Cc: Mel Gorman Cc: Reza Arbab Cc: Tobias Regnery Cc: Toshi Kani Cc: Vitaly Kuznetsov Cc: Vlastimil Babka Cc: Xishi Qiu Cc: Yasuaki Ishimatsu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmstat.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'mm/vmstat.c') diff --git a/mm/vmstat.c b/mm/vmstat.c index 571d3ec05566..6dae6b240b21 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1223,11 +1223,10 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m, for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) { struct page *page; - if (!pfn_valid(pfn)) + page = pfn_to_online_page(pfn); + if (!page) continue; - page = pfn_to_page(pfn); - /* Watch for unexpected holes punched in the memmap */ if (!memmap_valid_within(pfn, page, zone)) continue; -- cgit v1.2.3