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>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 1d3e5fcc2cc..c475977de05 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,