Symbol: NR_WRITTEN
include/trace/events/writeback.h
586
__entry->nr_written = global_node_page_state(NR_WRITTEN);
mm/page-writeback.c
2988
node_stat_mod_folio(folio, NR_WRITTEN, nr);
mm/vmstat.c
1253
[I(NR_WRITTEN)] = "nr_written",