Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...

[net-next-2.6.git] / fs / ocfs2 / dlm / dlmmaster.c

diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index ffb4c68dafa495bc739165eb30f718f1eb0865ec..f564b0e5f80d8c89e08eeba4a5e133b24cb67373 100644 (file)
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -3433,3 +3433,43 @@ void dlm_lockres_release_ast(struct dlm_ctxt *dlm,
        wake_up(&res->wq);
        wake_up(&dlm->migration_wq);
 }
+
+void dlm_force_free_mles(struct dlm_ctxt *dlm)
+{
+       int i;
+       struct hlist_head *bucket;
+       struct dlm_master_list_entry *mle;
+       struct hlist_node *tmp, *list;
+
+       /*
+        * We notified all other nodes that we are exiting the domain and
+        * marked the dlm state to DLM_CTXT_LEAVING. If any mles are still
+        * around we force free them and wake any processes that are waiting
+        * on the mles
+        */
+       spin_lock(&dlm->spinlock);
+       spin_lock(&dlm->master_lock);
+
+       BUG_ON(dlm->dlm_state != DLM_CTXT_LEAVING);
+       BUG_ON((find_next_bit(dlm->domain_map, O2NM_MAX_NODES, 0) < O2NM_MAX_NODES));
+
+       for (i = 0; i < DLM_HASH_BUCKETS; i++) {
+               bucket = dlm_master_hash(dlm, i);
+               hlist_for_each_safe(list, tmp, bucket) {
+                       mle = hlist_entry(list, struct dlm_master_list_entry,
+                                         master_hash_node);
+                       if (mle->type != DLM_MLE_BLOCK) {
+                               mlog(ML_ERROR, "bad mle: %p\n", mle);
+                               dlm_print_one_mle(mle);
+                       }
+                       atomic_set(&mle->woken, 1);
+                       wake_up(&mle->wq);
+
+                       __dlm_unlink_mle(dlm, mle);
+                       __dlm_mle_detach_hb_events(dlm, mle);
+                       __dlm_put_mle(mle);
+               }
+       }
+       spin_unlock(&dlm->master_lock);
+       spin_unlock(&dlm->spinlock);
+}