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Date: Wed, 28 Sep 2022 15:32:53 -0700 From: Doug Berger <opendmb@...il.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Jonathan Corbet <corbet@....net>, Mike Rapoport <rppt@...nel.org>, Borislav Petkov <bp@...e.de>, "Paul E. McKenney" <paulmck@...nel.org>, Neeraj Upadhyay <quic_neeraju@...cinc.com>, Randy Dunlap <rdunlap@...radead.org>, Damien Le Moal <damien.lemoal@...nsource.wdc.com>, Muchun Song <songmuchun@...edance.com>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Mel Gorman <mgorman@...e.de>, Mike Kravetz <mike.kravetz@...cle.com>, Florian Fainelli <f.fainelli@...il.com>, David Hildenbrand <david@...hat.com>, Oscar Salvador <osalvador@...e.de>, Michal Hocko <mhocko@...e.com>, Joonsoo Kim <iamjoonsoo.kim@....com>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, Doug Berger <opendmb@...il.com> Subject: [PATCH v2 1/9] lib/show_mem.c: display MovableOnly The comment for commit c78e93630d15 ("mm: do not walk all of system memory during show_mem") indicates it "also corrects the reporting of HighMem as HighMem/MovableOnly as ZONE_MOVABLE has similar problems to HighMem with respect to lowmem/highmem exhaustion." Presuming the similar problems are with regard to the general exclusion of kernel allocations from either zone, I believe it makes sense to include all ZONE_MOVABLE memory even on systems without HighMem. To the extent that this was the intent of the original commit I have included a "Fixes" tag, but it seems unnecessary to submit to linux-stable. Fixes: c78e93630d15 ("mm: do not walk all of system memory during show_mem") Signed-off-by: Doug Berger <opendmb@...il.com> --- lib/show_mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/show_mem.c b/lib/show_mem.c index 1c26c14ffbb9..337c870a5e59 100644 --- a/lib/show_mem.c +++ b/lib/show_mem.c @@ -27,7 +27,7 @@ void show_mem(unsigned int filter, nodemask_t *nodemask) total += zone->present_pages; reserved += zone->present_pages - zone_managed_pages(zone); - if (is_highmem_idx(zoneid)) + if (zoneid == ZONE_MOVABLE || is_highmem_idx(zoneid)) highmem += zone->present_pages; } } -- 2.25.1
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