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merge task_work and rcu_head, get rid of separate allocation for keyring case

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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>
This commit is contained in:
Al Viro
2012-06-27 11:07:19 +04:00
parent 158e1645e0
commit 67d1214551
8 changed files with 31 additions and 52 deletions
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6
security/keys/process_keys.c
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@@ -834,13 +834,11 @@ error:
* 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;