include/asm-x86/thread_info_32.h: checkpatch cleanups - formatting only

[sfrench/cifs-2.6.git] / ipc / namespace.c

diff --git a/ipc/namespace.c b/ipc/namespace.c
index 1fed8922d475e6bed7c3ab998e3f12025399ab04..1b967655eb350eba0c4308998e376a8d3a719c72 100644 (file)
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -44,6 +44,36 @@ struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns)
        return new_ns;
 }
 
+/*
+ * free_ipcs - free all ipcs of one type
+ * @ns:   the namespace to remove the ipcs from
+ * @ids:  the table of ipcs to free
+ * @free: the function called to free each individual ipc
+ *
+ * Called for each kind of ipc when an ipc_namespace exits.
+ */
+void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids,
+              void (*free)(struct ipc_namespace *, struct kern_ipc_perm *))
+{
+       struct kern_ipc_perm *perm;
+       int next_id;
+       int total, in_use;
+
+       down_write(&ids->rw_mutex);
+
+       in_use = ids->in_use;
+
+       for (total = 0, next_id = 0; total < in_use; next_id++) {
+               perm = idr_find(&ids->ipcs_idr, next_id);
+               if (perm == NULL)
+                       continue;
+               ipc_lock_by_ptr(perm);
+               free(ns, perm);
+               total++;
+       }
+       up_write(&ids->rw_mutex);
+}
+
 void free_ipc_ns(struct kref *kref)
 {
        struct ipc_namespace *ns;