From 44c9993384e9311cd56acf6ead3baffab616ae50 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Thu, 17 Oct 2013 14:13:30 -0400 Subject: NFS: Add method to detect whether an FSID is still on the server Introduce a mechanism for probing a server to determine if an FSID is present or absent. The on-the-wire compound is different between minor version 0 and 1. Minor version 0 appends a RENEW operation to identify which client ID is probing. Minor version 1 has a SEQUENCE operation in the compound which effectively carries the same information. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- include/linux/nfs_xdr.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/nfs_xdr.h') diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 405dfadcbc3b..8fe5b940c5f2 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1088,6 +1088,19 @@ struct nfs4_secinfo_res { struct nfs4_secinfo_flavors *flavors; }; +struct nfs4_fsid_present_arg { + struct nfs4_sequence_args seq_args; + const struct nfs_fh *fh; + clientid4 clientid; + unsigned char renew:1; +}; + +struct nfs4_fsid_present_res { + struct nfs4_sequence_res seq_res; + struct nfs_fh *fh; + unsigned char renew:1; +}; + #endif /* CONFIG_NFS_V4 */ struct nfstime4 { -- cgit v1.2.3