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-rw-r--r--include/linux/sem.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/sem.h b/include/linux/sem.h
index d42599395d79..1b191c176bcd 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -78,6 +78,7 @@ struct seminfo {
#ifdef __KERNEL__
#include <asm/atomic.h>
+#include <linux/rcupdate.h>
struct task_struct;
@@ -114,7 +115,10 @@ struct sem_queue {
* when the process exits.
*/
struct sem_undo {
- struct list_head list_proc; /* per-process list: all undos from one process */
+ struct list_head list_proc; /* per-process list: all undos from one process. */
+ /* rcu protected */
+ struct rcu_head rcu; /* rcu struct for sem_undo() */
+ struct sem_undo_list *ulp; /* sem_undo_list for the process */
struct list_head list_id; /* per semaphore array list: all undos for one array */
int semid; /* semaphore set identifier */
short * semadj; /* array of adjustments, one per semaphore */