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| author | Kinglong Mee <kinglongmee@gmail.com> | 2017-02-05 09:57:48 +0800 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2017-02-17 16:26:02 -0500 |
| commit | 827433801c3bcf21296915c42c1314fbb944b197 (patch) | |
| tree | 92398c55a1947fbfc5292c3d4db4d795171a0121 | |
| parent | e86a40bc7331b7b93a88edd74e6b2f738107a6f9 (diff) | |
| download | linux-827433801c3bcf21296915c42c1314fbb944b197.tar.bz2 | |
nfsd/callback: Drop a useless data copy when comparing sessionid
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/nfs4callback.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index ea74149841e7..0274db6e65d0 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -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; } |