linux/mm/mempolicy.c

620 	nodemask_t *nmask;
629  * Check if the folio's nid is in qp->nmask.
632  * in the invert of qp->nmask.
640 	return node_isset(nid, *qp->nmask) == !(flags & MPOL_MF_INVERT);
913 		.nmask = nodes,
1072 static long do_get_mempolicy(int *policy, nodemask_t *nmask,
1089 		*nmask  = cpuset_current_mems_allowed;
1154 	if (nmask) {
1156 			*nmask = pol->w.user_nodemask;
1159 			get_policy_nodemask(pol, nmask);
1210 	nodemask_t nmask;
1221 	nodes_clear(nmask);
1222 	node_set(source, nmask);
1239 	nr_failed = queue_pages_range(mm, vma->vm_start, mm->task_size, &nmask,
1413 		     nodemask_t *nmask, unsigned long flags)
1444 	new = mpol_new(mode, mode_flags, nmask);
1461 			err = mpol_set_nodemask(new, nmask, scratch);
1475 	nr_failed = queue_pages_range(mm, start, end, nmask,
1559 static int get_bitmap(unsigned long *mask, const unsigned long __user *nmask,
1567 					(const compat_ulong_t __user *)nmask,
1570 		ret = copy_from_user(mask, nmask,
1583 static int get_nodes(nodemask_t *nodes, const unsigned long __user *nmask,
1588 	if (maxnode == 0 || !nmask)
1602 		if (get_bitmap(&t, &nmask[(maxnode - 1) / BITS_PER_LONG], bits))
1615 	return get_bitmap(nodes_addr(*nodes), nmask, maxnode);
1665 			 unsigned long mode, const unsigned long __user *nmask,
1678 	err = get_nodes(&nodes, nmask, maxnode);
1753 		unsigned long, mode, const unsigned long __user *, nmask,
1756 	return kernel_mbind(start, len, mode, nmask, maxnode, flags);
1760 static long kernel_set_mempolicy(int mode, const unsigned long __user *nmask,
1772 	err = get_nodes(&nodes, nmask, maxnode);
1779 SYSCALL_DEFINE3(set_mempolicy, int, mode, const unsigned long __user *, nmask,
1782 	return kernel_set_mempolicy(mode, nmask, maxnode);
1881 				unsigned long __user *nmask,
1890 	if (nmask != NULL && maxnode < nr_node_ids)
1903 	if (nmask)
1904 		err = copy_nodes_to_user(nmask, maxnode, &nodes);
1910 		unsigned long __user *, nmask, unsigned long, maxnode,
1913 	return kernel_get_mempolicy(policy, nmask, maxnode, addr, flags);