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NFSD: Clean up nfsd4_encode_readv 

Address some minor nits I noticed while working on this function.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-03-02 15:00:04 -05:00
parent 412055398b
commit 7dcf4ab952
1 changed files with 4 additions and 5 deletions
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9
fs/nfsd/nfs4xdr.c
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@ -3591,7 +3591,6 @@ static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
__be32 nfserr;
__be32 tmp;
__be32 *p;
u32 zzz = 0;
int pad;
/*
@ -3607,7 +3606,7 @@ static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
v = 0;
while (len) {
thislen = min_t(long, len, PAGE_SIZE);
p = xdr_reserve_space(xdr, (thislen+3)&~3);
p = xdr_reserve_space(xdr, thislen);
WARN_ON_ONCE(!p);
resp->rqstp->rq_vec[v].iov_base = p;
resp->rqstp->rq_vec[v].iov_len = thislen;
@ -3616,7 +3615,6 @@ static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
}
read->rd_vlen = v;
len = maxcount;
nfserr = nfsd_readv(resp->rqstp, read->rd_fhp, file, read->rd_offset,
resp->rqstp->rq_vec, read->rd_vlen, &maxcount,
&eof);
@ -3625,16 +3623,17 @@ static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
return nfserr;
if (svc_encode_read_payload(resp->rqstp, starting_len + 8, maxcount))
return nfserr_io;
xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3));
xdr_truncate_encode(xdr, starting_len + 8 + xdr_align_size(maxcount));
tmp = htonl(eof);
write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4);
tmp = htonl(maxcount);
write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4);
tmp = xdr_zero;
pad = (maxcount&3) ? 4 - (maxcount&3) : 0;
write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount,
&zzz, pad);
&tmp, pad);
return 0;
}