Hongyu noticed that the nr_unaccepted counter kept growing even in the absence of unaccepted memory on the machine.
This happens due to a commit that removed NR_BOUNCE: it removed the counter from the enum zone_stat_item, but left it in the vmstat_text array.
As a result, all counters below nr_bounce in /proc/vmstat are shifted by one line, causing the numa_hit counter to be labeled as nr_unaccepted.
To fix this issue, remove nr_bounce from the vmstat_text array.
Signed-off-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Reported-by: Hongyu Ning hongyu.ning@linux.intel.com Fixes: 194df9f66db8 ("mm: remove NR_BOUNCE zone stat") Cc: stable@vger.kernel.org Cc: Christoph Hellwig hch@lst.de Cc: Hannes Reinecke hare@suse.de Cc: Johannes Thumshirn johannes.thumshirn@wdc.com Cc: Jens Axboe axboe@kernel.dk --- mm/vmstat.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/mm/vmstat.c b/mm/vmstat.c index 4c268ce39ff2..ae9882063d89 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1201,7 +1201,6 @@ const char * const vmstat_text[] = { "nr_zone_unevictable", "nr_zone_write_pending", "nr_mlock", - "nr_bounce", #if IS_ENABLED(CONFIG_ZSMALLOC) "nr_zspages", #endif