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 <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: Daniel Lezcano <[email protected]>
Cc: Cedric Le Goater <[email protected]>
Cc: Pavel Emelyanov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

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;