diff options
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 1a20e44635d3..4263fa6f2ab4 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1028,7 +1028,7 @@ bool allow_online_pfn_range(int nid, unsigned long pfn, unsigned long nr_pages, { struct pglist_data *pgdat = NODE_DATA(nid); struct zone *movable_zone = &pgdat->node_zones[ZONE_MOVABLE]; - struct zone *normal_zone = &pgdat->node_zones[ZONE_NORMAL]; + struct zone *default_zone = default_zone_for_pfn(nid, pfn, nr_pages); /* * TODO there shouldn't be any inherent reason to have ZONE_NORMAL @@ -1042,7 +1042,7 @@ bool allow_online_pfn_range(int nid, unsigned long pfn, unsigned long nr_pages, return true; return movable_zone->zone_start_pfn >= pfn + nr_pages; } else if (online_type == MMOP_ONLINE_MOVABLE) { - return zone_end_pfn(normal_zone) <= pfn; + return zone_end_pfn(default_zone) <= pfn; } /* MMOP_ONLINE_KEEP will always succeed and inherits the current zone */ @@ -1103,6 +1103,27 @@ void move_pfn_range_to_zone(struct zone *zone, } /* + * Returns a default kernel memory zone for the given pfn range. + * If no kernel zone covers this pfn range it will automatically go + * to the ZONE_NORMAL. + */ +struct zone *default_zone_for_pfn(int nid, unsigned long start_pfn, + unsigned long nr_pages) +{ + struct pglist_data *pgdat = NODE_DATA(nid); + int zid; + + for (zid = 0; zid <= ZONE_NORMAL; zid++) { + struct zone *zone = &pgdat->node_zones[zid]; + + if (zone_intersects(zone, start_pfn, nr_pages)) + return zone; + } + + return &pgdat->node_zones[ZONE_NORMAL]; +} + +/* * Associates the given pfn range with the given node and the zone appropriate * for the given online type. */ @@ -1110,7 +1131,7 @@ static struct zone * __meminit move_pfn_range(int online_type, int nid, unsigned long start_pfn, unsigned long nr_pages) { struct pglist_data *pgdat = NODE_DATA(nid); - struct zone *zone = &pgdat->node_zones[ZONE_NORMAL]; + struct zone *zone = default_zone_for_pfn(nid, start_pfn, nr_pages); if (online_type == MMOP_ONLINE_KEEP) { struct zone *movable_zone = &pgdat->node_zones[ZONE_MOVABLE]; |