lockmgr_recursed
if (lockmgr_xlocked(lk) && lockmgr_recursed(lk)) {
if (lockmgr_xlocked(lk) && lockmgr_recursed(lk))
if (lockmgr_recursed(lk)) {
if (lockmgr_recursed(lk)) {
if (lockmgr_recursed(lk))
lockmgr_recursed(&(bp)->b_lock)