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[PATCH] wait_table and zonelist initializing for memory hotadd: add return code for init_current_empty_zone

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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>
This commit is contained in:
Yasunori Goto
2006-06-23 02:03:10 -07:00
committed by Linus Torvalds
parent 86356ab147
commit 718127cc31
3 changed files with 24 additions and 5 deletions
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3
include/linux/mmzone.h
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@@ -333,6 +333,9 @@ void wakeup_kswapd(struct zone *zone, int order);
int zone_watermark_ok(struct zone *z, int order, unsigned long mark,
int classzone_idx, int alloc_flags);
extern int init_currently_empty_zone(struct zone *zone, unsigned long start_pfn,
unsigned long size);
#ifdef CONFIG_HAVE_MEMORY_PRESENT
void memory_present(int nid, unsigned long start, unsigned long end);
#else