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author | Chanho Min <chanho.min@lge.com> | 2020-01-04 23:59:36 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-09 12:19:56 +0300 |
commit | cdc57bac994b100b3fc501f224cb1269812e8f31 (patch) | |
tree | 44df1eb7e561172bf6abe53ce1740312b33b27dd /mm/zsmalloc.c | |
parent | e84c5b76173b3b49b054aa340066d5001ab20b70 (diff) | |
download | linux-cdc57bac994b100b3fc501f224cb1269812e8f31.tar.xz |
mm/zsmalloc.c: fix the migrated zspage statistics.
commit ac8f05da5174c560de122c499ce5dfb5d0dfbee5 upstream.
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@lge.com
Fixes: 91537fee0013 ("mm: add NR_ZSMALLOC to vmstat")
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Jinsuk Choi <jjinsuk.choi@lge.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org> [4.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/zsmalloc.c')
-rw-r--r-- | mm/zsmalloc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 2b2b9aae8a3c..22d17ecfe7df 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -2069,6 +2069,11 @@ static int zs_page_migrate(struct address_space *mapping, struct page *newpage, 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; |