* [PATCH 1/2] memcg: use existing function to judge root mem cgroup
@ 2012-06-22 11:57 Wanpeng Li
2012-06-22 12:28 ` Michal Hocko
2012-06-22 12:29 ` Johannes Weiner
0 siblings, 2 replies; 3+ messages in thread
From: Wanpeng Li @ 2012-06-22 11:57 UTC (permalink / raw)
To: linux-mm@kvack.org
Cc: cgroups, KAMEZAWA Hiroyuki, Michal Hocko, Johannes Weiner,
Frederic Weisbecker, Han Ying, Glauber Costa, Tejun Heo,
Aneesh Kumar K.V, Andrew Morton, Hiroyuki Kamezawa, Linux Kernel,
Wanpeng Li
From: Wanpeng Li <liwp@linux.vnet.ibm.com>
Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index f72b5e5..776fc57 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4873,7 +4873,7 @@ mem_cgroup_create(struct cgroup *cont)
goto free_out;
/* root ? */
- if (cont->parent == NULL) {
+ if (!(mem_cgroup_is_root(cont))) {
int cpu;
enable_swap_cgroup();
parent = NULL;
--
1.7.9.5
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] memcg: use existing function to judge root mem cgroup
2012-06-22 11:57 [PATCH 1/2] memcg: use existing function to judge root mem cgroup Wanpeng Li
@ 2012-06-22 12:28 ` Michal Hocko
2012-06-22 12:29 ` Johannes Weiner
1 sibling, 0 replies; 3+ messages in thread
From: Michal Hocko @ 2012-06-22 12:28 UTC (permalink / raw)
To: Wanpeng Li
Cc: linux-mm@kvack.org, cgroups, KAMEZAWA Hiroyuki, Johannes Weiner,
Frederic Weisbecker, Han Ying, Glauber Costa, Tejun Heo,
Aneesh Kumar K.V, Andrew Morton, Hiroyuki Kamezawa, Linux Kernel
On Fri 22-06-12 19:57:22, Wanpeng Li wrote:
> From: Wanpeng Li <liwp@linux.vnet.ibm.com>
>
> Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
> ---
> mm/memcontrol.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index f72b5e5..776fc57 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -4873,7 +4873,7 @@ mem_cgroup_create(struct cgroup *cont)
> goto free_out;
>
> /* root ? */
> - if (cont->parent == NULL) {
> + if (!(mem_cgroup_is_root(cont))) {
This is not correct. mem_cgroup_is_root takes mem_cgroup and you are
giving it cgroup, see?
> int cpu;
> enable_swap_cgroup();
> parent = NULL;
> --
> 1.7.9.5
>
> --
> To unsubscribe from this list: send the line "unsubscribe cgroups" in
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--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] memcg: use existing function to judge root mem cgroup
2012-06-22 11:57 [PATCH 1/2] memcg: use existing function to judge root mem cgroup Wanpeng Li
2012-06-22 12:28 ` Michal Hocko
@ 2012-06-22 12:29 ` Johannes Weiner
1 sibling, 0 replies; 3+ messages in thread
From: Johannes Weiner @ 2012-06-22 12:29 UTC (permalink / raw)
To: Wanpeng Li
Cc: linux-mm@kvack.org, cgroups, KAMEZAWA Hiroyuki, Michal Hocko,
Frederic Weisbecker, Han Ying, Glauber Costa, Tejun Heo,
Aneesh Kumar K.V, Andrew Morton, Hiroyuki Kamezawa, Linux Kernel
On Fri, Jun 22, 2012 at 07:57:22PM +0800, Wanpeng Li wrote:
> From: Wanpeng Li <liwp@linux.vnet.ibm.com>
>
> Signed-off-by: Wanpeng Li <liwp.linux@gmail.com>
> ---
> mm/memcontrol.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index f72b5e5..776fc57 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -4873,7 +4873,7 @@ mem_cgroup_create(struct cgroup *cont)
> goto free_out;
>
> /* root ? */
> - if (cont->parent == NULL) {
> + if (!(mem_cgroup_is_root(cont))) {
cont is struct cgroup *, but this function takes struct mem_cgroup *.
The compiler should have warned you about this.
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-06-22 12:28 ` Michal Hocko
2012-06-22 12:29 ` Johannes Weiner
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