move sock_update_memcg outside of CONFIG_INET

Although only used currently for tcp sockets, this function
is now used in common sock code (for sock_clone())

Commit 475f1b52645a29936b9df1d8fcd45f7e56bd4a9f moved the
declaration of sock_update_clone() to inside sock.c, but
this only fixes the problem when CONFIG_CGROUP_MEM_RES_CTLR_KMEM
is also not defined.

This patch here is verified to fix both problems, although
reverting the previous one is not necessary.

Signed-off-by: Glauber Costa <glommer@parallels.com>
CC: David S. Miller <davem@davemloft.net>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
---
 mm/memcontrol.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

On 01/16/2012 12:04 AM, Glauber Costa wrote:
> Although only used currently for tcp sockets, this function
> is now used in common sock code (for sock_clone())
> 
> Commit 475f1b52645a29936b9df1d8fcd45f7e56bd4a9f moved the
> declaration of sock_update_clone() to inside sock.c, but
> this only fixes the problem when CONFIG_CGROUP_MEM_RES_CTLR_KMEM
> is also not defined.
> 
> This patch here is verified to fix both problems, although
> reverting the previous one is not necessary.
> 
> Signed-off-by: Glauber Costa <glommer@parallels.com>
> CC: David S. Miller <davem@davemloft.net>
> CC: Stephen Rothwell <sfr@canb.auug.org.au>

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>

Thanks.

> ---
>  mm/memcontrol.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 602207b..3dbff4d 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -373,7 +373,6 @@ static void mem_cgroup_put(struct mem_cgroup *memcg);
>  
>  /* Writing them here to avoid exposing memcg's inner layout */
>  #ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM
> -#ifdef CONFIG_INET
>  #include <net/sock.h>
>  #include <net/ip.h>
>  
> @@ -420,6 +419,7 @@ void sock_release_memcg(struct sock *sk)
>  	}
>  }
>  
> +#ifdef CONFIG_INET
>  struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg)
>  {
>  	if (!memcg || mem_cgroup_is_root(memcg))

From: Glauber Costa <glommer@parallels.com>
Date: Mon, 16 Jan 2012 12:04:39 +0400

> Although only used currently for tcp sockets, this function
> is now used in common sock code (for sock_clone())
> 
> Commit 475f1b52645a29936b9df1d8fcd45f7e56bd4a9f moved the
> declaration of sock_update_clone() to inside sock.c, but
> this only fixes the problem when CONFIG_CGROUP_MEM_RES_CTLR_KMEM
> is also not defined.
> 
> This patch here is verified to fix both problems, although
> reverting the previous one is not necessary.
> 
> Signed-off-by: Glauber Costa <glommer@parallels.com>

Applied, but with a fixed subject line, you must always prefix your
subject line with the subsystem your change is being made to.  In
this case simply "net: " would have been sufficient, so that's what
I added.
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