WK_NODELAY
add_to_worklist(wk, WK_NODELAY);
if (flags & WK_NODELAY)
add_to_worklist(&freeblks->fb_list, WK_NODELAY);
add_to_worklist(&freeblks->fb_list, WK_NODELAY);
add_to_worklist(&freeblks->fb_list, WK_NODELAY);