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| author | Michal Hocko <mhocko@suse.com> | 2017-07-06 15:38:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 16:24:32 -0700 |
| commit | d336e94e448a514607551026f0624329b6af52c5 (patch) | |
| tree | dcba2b517de9f770a3d2a4cd115c10647f7759ff /mm/vmstat.c | |
| parent | 2ce13640b3f4c8721e6820476cb380fbbfaedc18 (diff) | |
| download | linux-stable-d336e94e448a514607551026f0624329b6af52c5.tar.gz linux-stable-d336e94e448a514607551026f0624329b6af52c5.tar.bz2 linux-stable-d336e94e448a514607551026f0624329b6af52c5.zip | |
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 <mhocko@suse.com>
Reported-by: Joonsoo Kim <js1304@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Daniel Kiper <daniel.kiper@oracle.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Tobias Regnery <tobias.regnery@gmail.com>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 5 |
1 files changed, 2 insertions, 3 deletions
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; |