merge task_work and rcu_head, get rid of separate allocation for keyring case
task_work and rcu_head are identical now; merge them (calling the result
struct callback_head, rcu_head #define'd to it), kill separate allocation
in security/keys since we can just use cred->rcu now.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index c9b07c9..54339cf 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -834,13 +834,11 @@
* Replace a process's session keyring on behalf of one of its children when
* the target process is about to resume userspace execution.
*/
-void key_change_session_keyring(struct task_work *twork)
+void key_change_session_keyring(struct callback_head *twork)
{
const struct cred *old = current_cred();
- struct kludge *p = container_of(twork, struct kludge, twork);
- struct cred *new = p->cred;
+ struct cred *new = container_of(twork, struct cred, rcu);
- kfree(p);
if (unlikely(current->flags & PF_EXITING)) {
put_cred(new);
return;
