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authorManfred Spraul <manfred@colorfullife.com>2008-07-25 01:48:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:42 -0700
commit4daa28f6d8f5cda8ea0f55048e3c8811c384cbdd (patch)
tree934bfbd7932a18da8295d9e21727985d1ea16311 /include/linux/sem.h
parent00c2bf85d8febfcfddde63822043462b026134ff (diff)
downloadop-kernel-dev-4daa28f6d8f5cda8ea0f55048e3c8811c384cbdd.zip
op-kernel-dev-4daa28f6d8f5cda8ea0f55048e3c8811c384cbdd.tar.gz
ipc/sem.c: convert undo structures to struct list_head
The undo structures contain two linked lists, the attached patch replaces them with generic struct list_head lists. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Cc: 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>
Diffstat (limited to 'include/linux/sem.h')
-rw-r--r--include/linux/sem.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/include/linux/sem.h b/include/linux/sem.h
index c8eaad9..6a1af1b 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -95,7 +95,7 @@ struct sem_array {
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 sem_undo *undo; /* undo requests on this array */
+ struct list_head list_id; /* undo requests on this array */
unsigned long sem_nsems; /* no. of semaphores in array */
};
@@ -118,8 +118,8 @@ struct sem_queue {
* when the process exits.
*/
struct sem_undo {
- struct sem_undo * proc_next; /* next entry on this process */
- struct sem_undo * id_next; /* next entry on this semaphore set */
+ struct list_head list_proc; /* per-process list: all undos from one 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 */
};
@@ -128,9 +128,9 @@ struct sem_undo {
* that may be shared among all a CLONE_SYSVSEM task group.
*/
struct sem_undo_list {
- atomic_t refcnt;
- spinlock_t lock;
- struct sem_undo *proc_list;
+ atomic_t refcnt;
+ spinlock_t lock;
+ struct list_head list_proc;
};
struct sysv_sem {
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