xas_find_conflict
entry = xas_find_conflict(xas);
void *xas_find_conflict(struct xa_state *);
while ((entry = xas_find_conflict(xas)))
XA_BUG_ON(xa, xas_find_conflict(&xas));
EXPORT_SYMBOL_GPL(xas_find_conflict);
if (xas_find_conflict(&xas))