make NFS work with 64KB page-size

[David Mosberger]

NFS currently bugs out on kernels with a page size of 64KB.  The
reason is a mismatch between RPCSVC_MAXPAGES and a calculation in
svc_init_buffer().  I'm not entirely certain which calculation is the
right one, but if I understand the code correctly, RPCSVC_MAXPAGES is
right and svc_init_buffer() is wrong.  The patch below fixes the
latter.

If the patch looks right, could you make sure it finds its way into
Linus' tree?

Thanks,

	--david

===== net/sunrpc/svc.c 1.20 vs edited =====
--- 1.20/net/sunrpc/svc.c	Fri Feb  7 12:25:20 2003
+++ edited/net/sunrpc/svc.c	Wed Jun 18 15:02:19 2003
@@ -111,7 +111,7 @@
 static int
 svc_init_buffer(struct svc_rqst *rqstp, unsigned int size)
 {
-	int pages = 2 + (size+ PAGE_SIZE -1) / PAGE_SIZE;
+	int pages = 1 + (size+ PAGE_SIZE -1) / PAGE_SIZE;
 	int arghi;
 	
 	rqstp->rq_argused = 0;