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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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9
include/linux/types.h
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@ -246,14 +246,15 @@ struct ustat {
};
/**
* struct rcu_head - callback structure for use with RCU
* struct callback_head - callback structure for use with RCU and task_work
* @next: next update requests in a list
* @func: actual update function to call after the grace period.
*/
struct rcu_head {
struct rcu_head *next;
void (*func)(struct rcu_head *head);
struct callback_head {
struct callback_head *next;
void (*func)(struct callback_head *head);
};
#define rcu_head callback_head
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */