IPC: use ipc_buildid() directly from ipc_addid()

By continuing to consolidate a little the IPC code, each id can be built
directly in ipc_addid() instead of having it built from each callers of
ipc_addid()

And I also remove shm_addid() in order to have, as much as possible, the
same code for shm/sem/msg.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Pierre Peiffer <pierre.peiffer@bull.net>
Cc: Nadia Derbey <Nadia.Derbey@bull.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/ipc/msg.c b/ipc/msg.c
index 46585a0..805ee08 100644 (file)
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -70,7 +70,6 @@ struct msg_sender {
 #define msg_ids(ns)    ((ns)->ids[IPC_MSG_IDS])
 
 #define msg_unlock(msq)                ipc_unlock(&(msq)->q_perm)
-#define msg_buildid(id, seq)   ipc_buildid(id, seq)
 
 static void freeque(struct ipc_namespace *, struct kern_ipc_perm *);
 static int newque(struct ipc_namespace *, struct ipc_params *);
@@ -186,7 +185,6 @@ static int newque(struct ipc_namespace *ns, struct ipc_params *params)
                return id;
        }
 
-       msq->q_perm.id = msg_buildid(id, msq->q_perm.seq);
        msq->q_stime = msq->q_rtime = 0;
        msq->q_ctime = get_seconds();
        msq->q_cbytes = msq->q_qnum = 0;

diff --git a/ipc/sem.c b/ipc/sem.c
index 0b45a4d..08da864 100644 (file)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -91,7 +91,6 @@
 
 #define sem_unlock(sma)                ipc_unlock(&(sma)->sem_perm)
 #define sem_checkid(sma, semid)        ipc_checkid(&sma->sem_perm, semid)
-#define sem_buildid(id, seq)   ipc_buildid(id, seq)
 
 static int newary(struct ipc_namespace *, struct ipc_params *);
 static void freeary(struct ipc_namespace *, struct kern_ipc_perm *);
@@ -268,7 +267,6 @@ static int newary(struct ipc_namespace *ns, struct ipc_params *params)
        }
        ns->used_sems += nsems;
 
-       sma->sem_perm.id = sem_buildid(id, sma->sem_perm.seq);
        sma->sem_base = (struct sem *) &sma[1];
        /* sma->sem_pending = NULL; */
        sma->sem_pending_last = &sma->sem_pending;

diff --git a/ipc/shm.c b/ipc/shm.c
index e636910..3e4aff9 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -60,7 +60,6 @@ static struct vm_operations_struct shm_vm_ops;
 
 #define shm_unlock(shp)                        \
        ipc_unlock(&(shp)->shm_perm)
-#define shm_buildid(id, seq)   ipc_buildid(id, seq)
 
 static int newseg(struct ipc_namespace *, struct ipc_params *);
 static void shm_open(struct vm_area_struct *vma);
@@ -169,12 +168,6 @@ static inline void shm_rmid(struct ipc_namespace *ns, struct shmid_kernel *s)
        ipc_rmid(&shm_ids(ns), &s->shm_perm);
 }
 
-static inline int shm_addid(struct ipc_namespace *ns, struct shmid_kernel *shp)
-{
-       return ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
-}
-
-
 
 /* This is called by fork, once for every shm attach. */
 static void shm_open(struct vm_area_struct *vma)
@@ -416,7 +409,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
        if (IS_ERR(file))
                goto no_file;
 
-       id = shm_addid(ns, shp);
+       id = ipc_addid(&shm_ids(ns), &shp->shm_perm, ns->shm_ctlmni);
        if (id < 0) {
                error = id;
                goto no_id;
@@ -428,7 +421,6 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
        shp->shm_ctim = get_seconds();
        shp->shm_segsz = size;
        shp->shm_nattch = 0;
-       shp->shm_perm.id = shm_buildid(id, shp->shm_perm.seq);
        shp->shm_file = file;
        /*
         * shmid gets reported as "inode#" in /proc/pid/maps.

diff --git a/ipc/util.c b/ipc/util.c
index fd1b50d..cb017c7 100644 (file)
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -231,6 +231,7 @@ int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
        if(ids->seq > ids->seq_max)
                ids->seq = 0;
 
+       new->id = ipc_buildid(id, new->seq);
        spin_lock_init(&new->lock);
        new->deleted = 0;
        rcu_read_lock();