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sysctl: Factor out insert_header and erase_header 

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
hifive-unleashed-5.1
Eric W. Biederman 2012-01-09 17:35:01 -08:00
parent e0d045290a
commit 8425d6aaf0
1 changed files with 13 additions and 3 deletions
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16
fs/proc/proc_sysctl.c
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@ -57,6 +57,17 @@ static void init_header(struct ctl_table_header *head,
head->parent = NULL;
}
static void erase_header(struct ctl_table_header *head)
{
list_del_init(&head->ctl_entry);
}
static void insert_header(struct ctl_table_header *header)
{
header->parent->count++;
list_add_tail(&header->ctl_entry, &header->set->list);
}
/* called under sysctl_lock */
static int use_table(struct ctl_table_header *p)
{
@ -96,7 +107,7 @@ static void start_unregistering(struct ctl_table_header *p)
* do not remove from the list until nobody holds it; walking the
* list in do_sysctl() relies on that.
*/
list_del_init(&p->ctl_entry);
erase_header(p);
}
static void sysctl_head_get(struct ctl_table_header *head)
@ -974,8 +985,7 @@ struct ctl_table_header *__register_sysctl_table(
}
if (sysctl_check_dups(namespaces, header, path, table))
goto fail_locked;
header->parent->count++;
list_add_tail(&header->ctl_entry, &header->set->list);
insert_header(header);
spin_unlock(&sysctl_lock);
return header;