Re: [PATCH next-20130703] net: sock: Add ifdef CONFIG_MEMCG_KMEM for mem_cgroup_sockets_{init,destroy}

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Hello.

On 03-07-2013 16:14, Sedat Dilek wrote:

When "CONFIG_MEMCG_KMEM=n" I see this in my build-log:
...
  LD      init/built-in.o
mm/built-in.o: In function `mem_cgroup_css_free':
memcontrol.c:(.text+0x5caa6): undefined reference to `mem_cgroup_sockets_destroy'
make[2]: *** [vmlinux] Error 1

Inspired by the ifdef for mem_cgroup_sockets_{init,destroy} here...

[ net/core/sock.c ]
...
int mem_cgroup_sockets_init()
...
void mem_cgroup_sockets_destroy()
...

...I did the the same for both in "include/net/sock.h".

This fixes the issue for me in next-20130703.

Signed-off-by: Sedat Dilek <sedat.dilek@xxxxxxxxx>
---
  include/net/sock.h | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index ea6206c..ad4bf7f 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -71,6 +71,7 @@
  struct cgroup;
  struct cgroup_subsys;
  #ifdef CONFIG_NET
+#ifdef CONFIG_MEMCG_KMEM
  int mem_cgroup_sockets_init(struct mem_cgroup *memcg, struct cgroup_subsys *ss);
  void mem_cgroup_sockets_destroy(struct mem_cgroup *memcg);
  #else
@@ -83,7 +84,8 @@ static inline
  void mem_cgroup_sockets_destroy(struct mem_cgroup *memcg)
  {
  }
-#endif
+#endif /* CONFIG_NET */
+#endif /* CONFIG_MEMCG_KMEM */

   You've mixed up the order of comments here. CONFIG_NET should come last.

WBR, Sergei

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