PG_HEADLOCK       151 fs/nfs/pagelist.c 	if (!test_and_set_bit(PG_HEADLOCK, &head->wb_flags))
PG_HEADLOCK       156 fs/nfs/pagelist.c 	return wait_on_bit_lock(&head->wb_flags, PG_HEADLOCK,
PG_HEADLOCK       172 fs/nfs/pagelist.c 	clear_bit(PG_HEADLOCK, &head->wb_flags);
PG_HEADLOCK       176 fs/nfs/pagelist.c 	wake_up_bit(&head->wb_flags, PG_HEADLOCK);
PG_HEADLOCK       190 fs/nfs/pagelist.c 	WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &head->wb_flags));
PG_HEADLOCK       246 fs/nfs/pagelist.c 		WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &prev->wb_head->wb_flags));