sysctl: Remember the ctl_table we passed to register_sysctl_paths

By doing this we allow users of register_sysctl_paths that build
and dynamically allocate their ctl_table to be simpler.  This allows
them to just remember the ctl_table_header returned from
register_sysctl_paths from which they can now find the
ctl_table array they need to free.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Daniel Lezcano <dlezcano@fr.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f580542333eb..89b7d95ecf51 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1669,6 +1669,7 @@ struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
                 new += 2;
         }
         *prevp = table;
+        header->ctl_table_arg = table;
 
         INIT_LIST_HEAD(&header->ctl_entry);
         header->used = 0;