SUNRPC: set per-net PipeFS superblock before notification (37629b57) · Commits · 戴 / test

There can be a case, when on MOUNT event RPC client (after it's dentries were created) is not longer hold by anyone except notification callback. I.e. on release this client will be destoroyed. And it's dentries have to be destroyed as well. Which in turn requires per-net PipeFS superblock to be set. Signed-off-by:

Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by:

Trond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/rpc_pipe.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1126,19 +1126,20 @@ rpc_fill_super(struct super_block sb, void data, int silent)
		return -ENOMEM;
		dprintk("RPC: sending pipefs MOUNT notification for net %p%s\n", net,
		NET_NAME(net));
		sn->pipefs_sb = sb;
		err = blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
		RPC_PIPEFS_MOUNT,
		sb);
		if (err)
		goto err_depopulate;
		sb->s_fs_info = get_net(net);
		sn->pipefs_sb = sb;
		return 0;

		err_depopulate:
		blocking_notifier_call_chain(&rpc_pipefs_notifier_list,
		RPC_PIPEFS_UMOUNT,
		sb);
		sn->pipefs_sb = NULL;
		__rpc_depopulate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF);
		return err;
		}

Admin message