wb_domain_init    346 include/linux/writeback.h int wb_domain_init(struct wb_domain *dom, gfp_t gfp);
wb_domain_init   4381 mm/memcontrol.c 	return wb_domain_init(&memcg->cgwb_domain, gfp);
wb_domain_init   2083 mm/page-writeback.c 	BUG_ON(wb_domain_init(&global_wb_domain, GFP_KERNEL));