diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-06-12 10:33:53 +0300 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-12 11:00:54 +0300 |
| commit | ca371c0d7e23d0d0afae65fc83a0e91cf7399573 (patch) | |
| tree | 20ca26fbdceefe25d1c362dc23a2152c1aac8b4c /include/linux | |
| parent | 8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff) | |
memcg: fix page_cgroup fatal error in FLATMEM
Now, SLAB is configured in very early stage and it can be used in
init routine now.
But replacing alloc_bootmem() in FLAT/DISCONTIGMEM's page_cgroup()
initialization breaks the allocation, now.
(Works well in SPARSEMEM case...it supports MEMORY_HOTPLUG and
size of page_cgroup is in reasonable size (< 1 << MAX_ORDER.)
This patch revive FLATMEM+memory cgroup by using alloc_bootmem.
In future,
We stop to support FLATMEM (if no users) or rewrite codes for flatmem
completely.But this will adds more messy codes and overheads.
Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Tested-by: Li Zefan <lizf@cn.fujitsu.com>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/page_cgroup.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 7339c7bf733..13f126c89ae 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -18,7 +18,19 @@ struct page_cgroup { }; void __meminit pgdat_page_cgroup_init(struct pglist_data *pgdat); -void __init page_cgroup_init(void); + +#ifdef CONFIG_SPARSEMEM +static inline void __init page_cgroup_init_flatmem(void) +{ +} +extern void __init page_cgroup_init(void); +#else +void __init page_cgroup_init_flatmem(void); +static inline void __init page_cgroup_init(void) +{ +} +#endif + struct page_cgroup *lookup_page_cgroup(struct page *page); enum { @@ -87,6 +99,10 @@ static inline void page_cgroup_init(void) { } +static inline void __init page_cgroup_init_flatmem(void) +{ +} + #endif #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP |