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authorYasunori Goto <y-goto@jp.fujitsu.com>2006-06-23 02:03:10 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:46 -0700
commit718127cc3170454f4aa274fdd2f1e01574fecd66 (patch)
tree8b42a48248d6508b8369718deef6b1af3ea82dbf /mm/page_alloc.c
parent86356ab147669bd3bcb2149fd9561d1280835c24 (diff)
[PATCH] wait_table and zonelist initializing for memory hotadd: add return code for init_current_empty_zone
When add_zone() is called against empty zone (not populated zone), we have to initialize the zone which didn't initialize at boot time. But, init_currently_empty_zone() may fail due to allocation of wait table. So, this patch is to catch its error code. Changes against wait_table is in the next patch. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5ae75bead4df..4bc66f6b7718 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2050,8 +2050,9 @@ static __meminit void zone_pcp_init(struct zone *zone)
zone->name, zone->present_pages, batch);
}
-static __meminit void init_currently_empty_zone(struct zone *zone,
- unsigned long zone_start_pfn, unsigned long size)
+__meminit int init_currently_empty_zone(struct zone *zone,
+ unsigned long zone_start_pfn,
+ unsigned long size)
{
struct pglist_data *pgdat = zone->zone_pgdat;
@@ -2063,6 +2064,8 @@ static __meminit void init_currently_empty_zone(struct zone *zone,
memmap_init(size, pgdat->node_id, zone_idx(zone), zone_start_pfn);
zone_init_free_lists(pgdat, zone, zone->spanned_pages);
+
+ return 0;
}
/*
@@ -2077,6 +2080,7 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat,
unsigned long j;
int nid = pgdat->node_id;
unsigned long zone_start_pfn = pgdat->node_start_pfn;
+ int ret;
pgdat_resize_init(pgdat);
pgdat->nr_zones = 0;
@@ -2118,7 +2122,8 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat,
continue;
zonetable_add(zone, nid, j, zone_start_pfn, size);
- init_currently_empty_zone(zone, zone_start_pfn, size);
+ ret = init_currently_empty_zone(zone, zone_start_pfn, size);
+ BUG_ON(ret);
zone_start_pfn += size;
}
}