* Called with shm_ids.rw_mutex (writer) and the shp structure locked.
* Only shm_ids.rw_mutex remains locked on exit.
*/
-static void do_shm_rmid(struct ipc_namespace *ns, struct shmid_kernel *shp)
+static void do_shm_rmid(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp)
{
+ struct shmid_kernel *shp;
+ shp = container_of(ipcp, struct shmid_kernel, shm_perm);
+
if (shp->shm_nattch){
shp->shm_perm.mode |= SHM_DEST;
/* Do not find it any more */
#ifdef CONFIG_IPC_NS
void shm_exit_ns(struct ipc_namespace *ns)
{
- struct shmid_kernel *shp;
- struct kern_ipc_perm *perm;
- int next_id;
- int total, in_use;
-
- down_write(&shm_ids(ns).rw_mutex);
-
- in_use = shm_ids(ns).in_use;
-
- for (total = 0, next_id = 0; total < in_use; next_id++) {
- perm = idr_find(&shm_ids(ns).ipcs_idr, next_id);
- if (perm == NULL)
- continue;
- ipc_lock_by_ptr(perm);
- shp = container_of(perm, struct shmid_kernel, shm_perm);
- do_shm_rmid(ns, shp);
- total++;
- }
- up_write(&shm_ids(ns).rw_mutex);
+ free_ipcs(ns, &shm_ids(ns), do_shm_rmid);
}
#endif
if (sfd->vm_ops->get_policy)
pol = sfd->vm_ops->get_policy(vma, addr);
- else if (vma->vm_policy)
+ else if (vma->vm_policy) {
pol = vma->vm_policy;
- else
+ mpol_get(pol); /* get_vma_policy() expects this */
+ } else
pol = current->mempolicy;
return pol;
}
if (err)
goto out_unlock_up;
- do_shm_rmid(ns, shp);
+ do_shm_rmid(ns, &shp->shm_perm);
up_write(&shm_ids(ns).rw_mutex);
goto out;
}