nfs: nfs4xdr: optimize RESERVE_SPACE in encode_create_session and encode_sequence
Coalesce multilpe constant RESERVE_SPACEs into one
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 17915c8..d460d81 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1562,17 +1562,15 @@
uint32_t len;
struct nfs_client *clp = args->client;
- RESERVE_SPACE(4);
+ len = scnprintf(machine_name, sizeof(machine_name), "%s",
+ clp->cl_ipaddr);
+
+ RESERVE_SPACE(20 + 2*28 + 20 + len + 12);
*p++ = cpu_to_be32(OP_CREATE_SESSION);
-
- RESERVE_SPACE(8);
p = xdr_encode_hyper(p, clp->cl_ex_clid);
-
- RESERVE_SPACE(8);
*p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
*p++ = cpu_to_be32(args->flags); /*flags */
- RESERVE_SPACE(2*28); /* 2 channel_attrs */
/* Fore Channel */
*p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
*p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
@@ -1591,21 +1589,12 @@
*p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
*p++ = cpu_to_be32(0); /* rdmachannel_attrs */
- RESERVE_SPACE(4);
*p++ = cpu_to_be32(args->cb_program); /* cb_program */
-
- RESERVE_SPACE(4); /* # of security flavors */
*p++ = cpu_to_be32(1);
-
- RESERVE_SPACE(4);
*p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
/* authsys_parms rfc1831 */
- RESERVE_SPACE(4);
*p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
- len = scnprintf(machine_name, sizeof(machine_name), "%s",
- clp->cl_ipaddr);
- RESERVE_SPACE(16 + len);
*p++ = cpu_to_be32(len);
p = xdr_encode_opaque_fixed(p, machine_name, len);
*p++ = cpu_to_be32(0); /* UID */
@@ -1646,7 +1635,7 @@
WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
slot = tp->slots + args->sa_slotid;
- RESERVE_SPACE(4);
+ RESERVE_SPACE(4 + NFS4_MAX_SESSIONID_LEN + 16);
*p++ = cpu_to_be32(OP_SEQUENCE);
/*
@@ -1661,7 +1650,6 @@
((u32 *)session->sess_id.data)[3],
slot->seq_nr, args->sa_slotid,
tp->highest_used_slotid, args->sa_cache_this);
- RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 16);
p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
*p++ = cpu_to_be32(slot->seq_nr);
*p++ = cpu_to_be32(args->sa_slotid);