ipc/sem.c: convert sem_array.sem_pending to struct list_head

sem_array.sem_pending is a double linked list, the attached patch converts
it to struct list_head.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Reviewed-by: Nadia Derbey <Nadia.Derbey@bull.net>
Cc: Pierre Peiffer <peifferp@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 7 deletions

diff --git a/include/linux/sem.h b/include/linux/sem.h
index 87756ef1198e..d42599395d79 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -93,21 +93,19 @@ struct sem_array {
         time_t                  sem_otime;      /* last semop time */
         time_t                  sem_ctime;      /* last change time */
         struct sem              *sem_base;      /* ptr to first semaphore in array */
-        struct sem_queue        *sem_pending;   /* pending operations to be processed */
-        struct sem_queue        **sem_pending_last; /* last pending operation */
+        struct list_head        sem_pending;    /* pending operations to be processed */
         struct list_head        list_id;        /* undo requests on this array */
         unsigned long           sem_nsems;      /* no. of semaphores in array */
 };
 
 /* One queue for each sleeping process in the system. */
 struct sem_queue {
-        struct sem_queue *      next;    /* next entry in the queue */
-        struct sem_queue **     prev;    /* previous entry in the queue, *(q->prev) == q */
-        struct task_struct*     sleeper; /* this process */
-        struct sem_undo *       undo;    /* undo structure */
+        struct list_head        list;    /* queue of pending operations */
+        struct task_struct      *sleeper; /* this process */
+        struct sem_undo         *undo;   /* undo structure */
         int                     pid;     /* process id of requesting process */
         int                     status;  /* completion status of operation */
-        struct sembuf *         sops;    /* array of pending operations */
+        struct sembuf           *sops;   /* array of pending operations */
         int                     nsops;   /* number of operations */
         int                     alter;   /* does the operation alter the array? */
 };