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author | J. Bruce Fields <bfields@redhat.com> | 2017-04-25 16:21:34 -0400 |
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committer | J. Bruce Fields <bfields@redhat.com> | 2017-04-25 16:36:16 -0400 |
commit | db44bac41bbfc0c0d9dd943092d8bded3c9db19b (patch) | |
tree | 635a22d9be0a97d340594954d90a23657b39c09a /fs/nfsd/nfs3xdr.c | |
parent | e6838a29ecb484c97e4efef9429643b9851fba6e (diff) | |
download | linux-stable-db44bac41bbfc0c0d9dd943092d8bded3c9db19b.tar.gz linux-stable-db44bac41bbfc0c0d9dd943092d8bded3c9db19b.tar.bz2 linux-stable-db44bac41bbfc0c0d9dd943092d8bded3c9db19b.zip |
nfsd4: minor NFSv2/v3 write decoding cleanup
Use a couple shortcuts that will simplify a following bugfix.
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs3xdr.c')
-rw-r--r-- | fs/nfsd/nfs3xdr.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index dba2ff8eaa68..d18cfddbe115 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -358,6 +358,8 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, { unsigned int len, v, hdr, dlen; u32 max_blocksize = svc_max_payload(rqstp); + struct kvec *head = rqstp->rq_arg.head; + struct kvec *tail = rqstp->rq_arg.tail; p = decode_fh(p, &args->fh); if (!p) @@ -377,9 +379,8 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, * Check to make sure that we got the right number of * bytes. */ - hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; - dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len - + rqstp->rq_arg.tail[0].iov_len - hdr; + hdr = (void*)p - head->iov_base; + dlen = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len - hdr; /* * Round the length of the data which was specified up to * the next multiple of XDR units and then compare that @@ -396,7 +397,7 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, len = args->len = max_blocksize; } rqstp->rq_vec[0].iov_base = (void*)p; - rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; + rqstp->rq_vec[0].iov_len = head->iov_len - hdr; v = 0; while (len > rqstp->rq_vec[v].iov_len) { len -= rqstp->rq_vec[v].iov_len; |