Wrap buffers used for rpc debug printks into RPC_IFDEBUG

Sorry for the noise, but here's the v3 of this compilation fix :)

There are some places, which declare the char buf[...] on the stack
to push it later into dprintk(). Since the dprintk sometimes (if the
CONFIG_SYSCTL=n) becomes an empty do { } while (0) stub, these buffers
cause gcc to produce appropriate warnings.

Wrap these buffers with RPC_IFDEBUG macro, as Trond proposed, to
compile them out when not needed.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

4 files changed, 6 insertions, 6 deletions

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 08226464e563..1ed8bd4de941 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -153,7 +153,7 @@ lockd(struct svc_rqst *rqstp)
          */
         while ((nlmsvc_users || !signalled()) && nlmsvc_pid == current->pid) {
                 long timeout = MAX_SCHEDULE_TIMEOUT;
-                char buf[RPC_MAX_ADDRBUFLEN];
+                RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
 
                 if (signalled()) {
                         flush_signals(current);
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index 0d784f6f609f..66648dd92d97 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -172,7 +172,7 @@ void nfs_callback_down(void)
 static int nfs_callback_authenticate(struct svc_rqst *rqstp)
 {
         struct nfs_client *clp;
-        char buf[RPC_MAX_ADDRBUFLEN];
+        RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
 
         /* Don't talk to strangers */
         clp = nfs_find_client(svc_addr(rqstp), 4);
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 0130b345234d..1eb771d79cca 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -101,7 +101,7 @@ static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,
 {
         /* Check if the request originated from a secure port. */
         if (!rqstp->rq_secure && EX_SECURE(exp)) {
-                char buf[RPC_MAX_ADDRBUFLEN];
+                RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
                 dprintk(KERN_WARNING
                        "nfsd: request from insecure port %s!\n",
                        svc_print_addr(rqstp, buf, sizeof(buf)));
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 1d3e5fcc2cc4..c475977de05a 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -175,7 +175,7 @@ static int svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
         size_t          base = xdr->page_base;
         unsigned int    pglen = xdr->page_len;
         unsigned int    flags = MSG_MORE;
-        char            buf[RPC_MAX_ADDRBUFLEN];
+        RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
 
         slen = xdr->len;
 
@@ -716,7 +716,7 @@ static struct svc_xprt *svc_tcp_accept(struct svc_xprt *xprt)
         struct socket   *newsock;
         struct svc_sock *newsvsk;
         int             err, slen;
-        char            buf[RPC_MAX_ADDRBUFLEN];
+        RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
 
         dprintk("svc: tcp_accept %p sock %p\n", svsk, sock);
         if (!sock)
@@ -1206,10 +1206,10 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
         struct socket   *sock;
         int             error;
         int             type;
-        char            buf[RPC_MAX_ADDRBUFLEN];
         struct sockaddr_storage addr;
         struct sockaddr *newsin = (struct sockaddr *)&addr;
         int             newlen;
+        RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
 
         dprintk("svc: svc_create_socket(%s, %d, %s)\n",
                         serv->sv_program->pg_name, protocol,