policy_nodemask
nodemask = policy_nodemask(gfp, pol, ilx, &nid);
*nodemask = policy_nodemask(gfp_flags, *mpol, ilx, &nid);
nodemask = policy_nodemask(gfp, pol, ilx, &nid);
nodemask = policy_nodemask(gfp, pol, NO_INTERLEAVE_INDEX, &nid);
static nodemask_t *policy_nodemask(gfp_t gfp, struct mempolicy *pol,