The patch titled
Subject: mm/zsmalloc.c: fix the migrated zspage statistics.
has been added to the -mm tree. Its filename is
mm-zsmallocc-fix-the-migrated-zspage-statistics.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-zsmallocc-fix-the-migrated-zspage-statistics.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-zsmallocc-fix-the-migrated-zspage-statistics.patch
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------------------------------------------------------
From: Chanho Min <chanho.min@xxxxxxx>
Subject: mm/zsmalloc.c: fix the migrated zspage statistics.
When zspage is migrated to the other zone, the zone page state should be
updated as well, otherwise the NR_ZSPAGE for each zone shows wrong counts
including proc/zoneinfo in practice.
Link: http://lkml.kernel.org/r/1575434841-48009-1-git-send-email-chanho.min@xxxxxxx
Fixes: 91537fee0013 ("mm: add NR_ZSMALLOC to vmstat")
Signed-off-by: Chanho Min <chanho.min@xxxxxxx>
Signed-off-by: Jinsuk Choi <jjinsuk.choi@xxxxxxx>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [4.9+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/mm/zsmalloc.c~mm-zsmallocc-fix-the-migrated-zspage-statistics
+++ a/mm/zsmalloc.c
@@ -2069,6 +2069,11 @@ static int zs_page_migrate(struct addres
zs_pool_dec_isolated(pool);
}
+ if (page_zone(newpage) != page_zone(page)) {
+ dec_zone_page_state(page, NR_ZSPAGES);
+ inc_zone_page_state(newpage, NR_ZSPAGES);
+ }
+
reset_page(page);
put_page(page);
page = newpage;
_
Patches currently in -mm which might be from chanho.min@xxxxxxx are
mm-zsmallocc-fix-the-migrated-zspage-statistics.patch
