frag_show_print() just reads zone->free_area[order].nr_free, so it can safely do this without needing the zone->lock. Pass nolock=true from frag_show(), so that walk_zones_in_node() can skip the zone->lock acquisition. Signed-off-by: Imran Khan --- mm/vmstat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index f534972f517de..7b93fbf9af092 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1568,7 +1568,7 @@ static void frag_show_print(struct seq_file *m, pg_data_t *pgdat, static int frag_show(struct seq_file *m, void *arg) { pg_data_t *pgdat = (pg_data_t *)arg; - walk_zones_in_node(m, pgdat, true, false, frag_show_print); + walk_zones_in_node(m, pgdat, true, true, frag_show_print); return 0; } base-commit: e43ffb69e0438cddd72aaa30898b4dc446f664f8 -- 2.34.1