Commit 82743380 authored by Kinglong Mee's avatar Kinglong Mee Committed by J. Bruce Fields
Browse files

nfsd/callback: Drop a useless data copy when comparing sessionid


Signed-off-by: default avatarKinglong Mee <kinglongmee@gmail.com>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
parent e86a40bc
......@@ -397,13 +397,10 @@ static int decode_cb_sequence4resok(struct xdr_stream *xdr,
struct nfsd4_callback *cb)
{
struct nfsd4_session *session = cb->cb_clp->cl_cb_session;
struct nfs4_sessionid id;
int status;
int status = -ESERVERFAULT;
__be32 *p;
u32 dummy;
status = -ESERVERFAULT;
/*
* If the server returns different values for sessionID, slotID or
* sequence number, the server is looney tunes.
......@@ -411,9 +408,8 @@ static int decode_cb_sequence4resok(struct xdr_stream *xdr,
p = xdr_inline_decode(xdr, NFS4_MAX_SESSIONID_LEN + 4 + 4 + 4 + 4);
if (unlikely(p == NULL))
goto out_overflow;
memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN);
if (memcmp(id.data, session->se_sessionid.data,
NFS4_MAX_SESSIONID_LEN) != 0) {
if (memcmp(p, session->se_sessionid.data, NFS4_MAX_SESSIONID_LEN)) {
dprintk("NFS: %s Invalid session id\n", __func__);
goto out;
}
......
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