sysctl: Remove the now unused ctl_table parent field.

While useful at one time for selinux and the sysctl sanity
checks those users no longer use the parent field and we can
safely remove it.

Inspired-by: Lucian Adrian Grijincu <lucian.grijincu@gmil.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 1 insertions, 11 deletions

diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index a492ff60e071..e573f9b4f22e 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -218,16 +218,6 @@ static int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int
         return test_perm(mode, op);
 }
 
-static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table)
-{
-        for (; table->procname; table++) {
-                table->parent = parent;
-                if (table->child)
-                        sysctl_set_parent(table, table->child);
-        }
-}
-
-
 static struct inode *proc_sys_make_inode(struct super_block *sb,
                 struct ctl_table_header *head, struct ctl_table *table)
 {
@@ -947,10 +937,10 @@ struct ctl_table_header *__register_sysctl_table(
         header->used = 0;
         header->unregistering = NULL;
         header->root = root;
-        sysctl_set_parent(NULL, header->ctl_table);
         header->count = 1;
         if (sysctl_check_table(path, table))
                 goto fail;
+
         spin_lock(&sysctl_lock);
         header->set = lookup_header_set(root, namespaces);
         header->attached_by = header->ctl_table;