PG_error          171 fs/proc/page.c 	u |= kpf_copy_bit(k, KPF_ERROR,		PG_error);
PG_error           85 include/trace/events/mmflags.h 	{1UL << PG_error,		"error"		},		\
PG_error         1185 mm/hugetlb.c   		page[i].flags &= ~(1 << PG_locked | 1 << PG_error |