NFSv4.1: Select the "most recent locking state" for read/write/setattr stateids
Follow the practice described in section 8.2.2 of RFC5661: When sending a
read/write or setattr stateid, set the seqid field to zero in order to
signal that the NFS server should apply the most recent locking state.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 4e95bd7..685b1e9 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1053,6 +1053,8 @@
goto out;
ret = nfs4_copy_open_stateid(dst, state);
out:
+ if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41))
+ dst->seqid = 0;
return ret;
}