[PATCH] repair nfsd/sunrpc in 2.6.14-rc2-mm1 (and other -mm versions)

[Max Kellermann <max@duempel.org>]

Hi Andrew,

nfsd is still broken in 2.6.14-rc2-mm1; the following procedure is
reproducable:

 rabbit:~# echo 2 >/proc/fs/nfsd/threads 

... /var/log/daemon.log says:

 Sep 22 13:52:55 rabbit kernel: NFSD: Using /var/lib/nfs/v4recovery as
 the NFSv4 state recovery directory
 Sep 22 13:52:55 rabbit kernel: NFSD: starting 90-second grace period
 Sep 22 13:52:55 rabbit portmap[3191]: connect from 127.0.0.1 to
 set(nfs): request from unprivileged port

Your -mm patches make the sunrpc client connect to the portmapper with
a non-privileged source port.  This is due to a change in
net/sunrpc/pmap_clnt.c, which manually resets the xprt->resvport
field.  My tiny patch removes this line.  I have no idea why the line
was added in the first place, does somebody know better?

Max

--- linux-2.6.14-rc2-mm1/net/sunrpc/pmap_clnt.c.orig	2005-09-22 14:58:14.000000000 +0200
+++ linux-2.6.14-rc2-mm1/net/sunrpc/pmap_clnt.c	2005-09-22 14:58:16.000000000 +0200
@@ -208,7 +208,6 @@
 	if (IS_ERR(xprt))
 		return (struct rpc_clnt *)xprt;
 	xprt->addr.sin_port = htons(RPC_PMAP_PORT);
-	xprt->resvport = 0;
 
 	/* printk("pmap: create clnt\n"); */
 	clnt = rpc_new_client(xprt, hostname,