__WB_COMPLETION_INIT   86 include/linux/backing-dev-defs.h #define WB_COMPLETION_INIT(bdi)		__WB_COMPLETION_INIT(&(bdi)->wb_waitq)
__WB_COMPLETION_INIT 5152 mm/memcontrol.c 			__WB_COMPLETION_INIT(&memcg_cgwb_frn_waitq);