nfsd4: cleanup: replace rq_resused count by rq_next_page pointer

It may be a matter of personal taste, but I find this makes the code
clearer.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 65ec595e2226..979b42106979 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -246,7 +246,7 @@ nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
                                         struct nfsd_readargs *args)
 {
         unsigned int len;
-        int v,pn;
+        int v;
         if (!(p = decode_fh(p, &args->fh)))
                 return 0;
 
@@ -262,8 +262,9 @@ nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
          */
         v=0;
         while (len > 0) {
-                pn = rqstp->rq_resused++;
-                rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]);
+                struct page *p = *(rqstp->rq_next_page++);
+
+                rqstp->rq_vec[v].iov_base = page_address(p);
                 rqstp->rq_vec[v].iov_len = len < PAGE_SIZE?len:PAGE_SIZE;
                 len -= rqstp->rq_vec[v].iov_len;
                 v++;
@@ -355,7 +356,7 @@ nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_readli
 {
         if (!(p = decode_fh(p, &args->fh)))
                 return 0;
-        args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused++]);
+        args->buffer = page_address(*(rqstp->rq_next_page++));
 
         return xdr_argsize_check(rqstp, p);
 }
@@ -396,7 +397,7 @@ nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p,
         if (args->count > PAGE_SIZE)
                 args->count = PAGE_SIZE;
 
-        args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused++]);
+        args->buffer = page_address(*(rqstp->rq_next_page++));
 
         return xdr_argsize_check(rqstp, p);
 }