build_zonerefs_node

Name:Builds allocation fallback zone lists.* Add all populated zones of a node to the zonelist.

Proto:static int build_zonerefs_node(pg_data_t *pgdat, struct zoneref *zonerefs)

Type:int

Parameter:

Type	Parameter	Name
pg_data_t *	pgdat
struct zoneref *	zonerefs

5431

zone_type = MAX_NR_ZONES

5432

nr_zones = 0

5434

Do

5435

5436

zone = node_zones + zone_type

5437

If Returns true if a zone has pages managed by the buddy allocator.* All the reclaim decisions have to use this function rather than* populated_zone(). If the whole zone is reserved then we can easily* end up with populated_zone() && !managed_zone(). Then

5438

zoneref_set_zone(zone, & zonerefs[nr_zones++])

5439

check_highest_zone(zone_type)

5441

When zone_type cycle

5443

Return nr_zones

**Caller**
Name	Describe
build_zonelists_in_node_order	Build zonelists ordered by node and zones within node.* This results in maximum locality--normal zone overflows into local* DMA zone, if any--but risks exhausting DMA zone.
build_thisnode_zonelists	Build gfp_thisnode zonelists

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