diff options
| -rw-r--r-- | drivers/base/memory.c | 2 | ||||
| -rw-r--r-- | include/linux/memory_hotplug.h | 2 | ||||
| -rw-r--r-- | mm/memory_hotplug.c | 27 |
3 files changed, 27 insertions, 4 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index b86fda3..c7c4e03 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -419,7 +419,7 @@ static ssize_t show_valid_zones(struct device *dev, nid = pfn_to_nid(start_pfn); if (allow_online_pfn_range(nid, start_pfn, nr_pages, MMOP_ONLINE_KERNEL)) { - strcat(buf, NODE_DATA(nid)->node_zones[ZONE_NORMAL].name); + strcat(buf, default_zone_for_pfn(nid, start_pfn, nr_pages)->name); append = true; } diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index 8a07a49..4d65a2f 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -311,4 +311,6 @@ extern struct page *sparse_decode_mem_map(unsigned long coded_mem_map, unsigned long pnum); extern bool allow_online_pfn_range(int nid, unsigned long pfn, unsigned long nr_pages, int online_type); +extern struct zone *default_zone_for_pfn(int nid, unsigned long pfn, + unsigned long nr_pages); #endif /* __LINUX_MEMORY_HOTPLUG_H */ diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 1a20e44..4263fa6 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]; |
