ocfs2: mle ref count debugging (aa852354) · Commits · e / devices / android_kernel_xiaomi_markw

fs/ocfs2/dlm/dlmmaster.c

+20 −9

Original line number	Diff line number	Diff line
		@@ -371,8 +371,13 @@ static void __dlm_put_mle(struct dlm_master_list_entry *mle)

		assert_spin_locked(&dlm->spinlock);
		assert_spin_locked(&dlm->master_lock);
		BUG_ON(!atomic_read(&mle->mle_refs.refcount));

		if (!atomic_read(&mle->mle_refs.refcount)) {
		/* this may or may not crash, but who cares.
		* it's a BUG. */
		mlog(ML_ERROR, "bad mle: %p\n", mle);
		dlm_print_one_mle(mle);
		BUG();
		} else
		kref_put(&mle->mle_refs, dlm_mle_release);
		}

		@@ -1008,6 +1013,12 @@ recheck:
		"rechecking now\n", dlm->name, res->lockname.len,
		res->lockname.name);
		goto recheck;
		} else {
		if (!voting_done) {
		mlog(0, "map not changed and voting not done "
		"for %s:%.*s\n", dlm->name, res->lockname.len,
		res->lockname.name);
		}
		}

		if (m != O2NM_MAX_NODES) {
		@@ -1691,7 +1702,7 @@ int dlm_assert_master_handler(struct o2net_msg msg, u32 len, void data)
		if (bit >= O2NM_MAX_NODES) {
		/* not necessarily an error, though less likely.
		* could be master just re-asserting. */
		mlog(ML_ERROR, "no bits set in the maybe_map, but %u "
		mlog(0, "no bits set in the maybe_map, but %u "
		"is asserting! (%.*s)\n", assert->node_idx,
		namelen, name);
		} else if (bit != assert->node_idx) {
		@@ -1703,7 +1714,7 @@ int dlm_assert_master_handler(struct o2net_msg msg, u32 len, void data)
		* number winning the mastery will respond
		* YES to mastery requests, but this node
		* had no way of knowing. let it pass. */
		mlog(ML_ERROR, "%u is the lowest node, "
		mlog(0, "%u is the lowest node, "
		"%u is asserting. (%.*s) %u must "
		"have begun after %u won.\n", bit,
		assert->node_idx, namelen, name, bit,
		@@ -2268,8 +2279,8 @@ fail:
		/* avoid hang during shutdown when migrating lockres
		* to a node which also goes down */
		if (dlm_is_node_dead(dlm, target)) {
		mlog(0, "%s:%.*s: expected migration target %u "
		"is no longer up. restarting.\n",
		mlog(0, "%s:%.*s: expected migration "
		"target %u is no longer up, restarting\n",
		dlm->name, res->lockname.len,
		res->lockname.name, target);
		ret = -ERESTARTSYS;
		@@ -2790,8 +2801,8 @@ top:
		spin_unlock(&mle->spinlock);
		wake_up(&mle->wq);

		mlog(0, "node %u died during migration from "
		"%u to %u!\n", dead_node,
		mlog(0, "%s: node %u died during migration from "
		"%u to %u!\n", dlm->name, dead_node,
		mle->master, mle->new_master);
		/* if there is a lockres associated with this
		* mle, find it and set its owner to UNKNOWN */