NFSv4.1: send zero stateid seqid on v4.1 i/o
Data servers require a zero stateid seqid, and there is no advantage to not
doing the same for all NFSv4.1
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 94d50e8..a656b6e 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1384,7 +1384,7 @@
hdr->replen += decode_putrootfh_maxsz;
}
-static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx)
+static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx, int zero_seqid)
{
nfs4_stateid stateid;
__be32 *p;
@@ -1392,6 +1392,8 @@
p = reserve_space(xdr, NFS4_STATEID_SIZE);
if (ctx->state != NULL) {
nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
+ if (zero_seqid)
+ stateid.stateid.seqid = 0;
xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
} else
xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
@@ -1404,7 +1406,8 @@
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_READ);
- encode_stateid(xdr, args->context, args->lock_context);
+ encode_stateid(xdr, args->context, args->lock_context,
+ hdr->minorversion);
p = reserve_space(xdr, 12);
p = xdr_encode_hyper(p, args->offset);
@@ -1592,7 +1595,8 @@
p = reserve_space(xdr, 4);
*p = cpu_to_be32(OP_WRITE);
- encode_stateid(xdr, args->context, args->lock_context);
+ encode_stateid(xdr, args->context, args->lock_context,
+ hdr->minorversion);
p = reserve_space(xdr, 16);
p = xdr_encode_hyper(p, args->offset);