linux-kernel - linux-next: build failure after merge of the final tree (net-next tree related)

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Date:	Tue, 23 Apr 2013 17:46:18 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	David Miller <davem@...emloft.net>, <netdev@...r.kernel.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Patrick McHardy <kaber@...sh.net>
Subject: linux-next: build failure after merge of the final tree (net-next
 tree related)

Hi all,

After merging the final tree, today's linux-next build (powerpc
allyesconfig) failed like this:

net/netlink/af_netlink.c: In function 'netlink_frame_flush_dcache':
net/netlink/af_netlink.c:384:40: error: 'NL_MMAP_MSG_HDRLEN' undeclared (first use in this function)

Caused by commit 9652e931e73b ("netlink: add mmap'ed netlink helper
functions").  This needed to be build tested on an architecture that has
ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE set to 1 (like Sparc :-)).

I added the following patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Tue, 23 Apr 2013 17:40:35 +1000
Subject: [PATCH] netlink: fix typo in net/netlink/af_netlink.c

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 net/netlink/af_netlink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 2a3e9ba..da5601d 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -381,7 +381,7 @@ static void netlink_frame_flush_dcache(const struct nl_mmap_hdr *hdr)
 
 	/* First page is flushed through netlink_{get,set}_status */
 	p_start = pgvec_to_page(hdr + PAGE_SIZE);
-	p_end   = pgvec_to_page((void *)hdr + NL_MMAP_MSG_HDRLEN + hdr->nm_len - 1);
+	p_end   = pgvec_to_page((void *)hdr + NL_MMAP_HDRLEN + hdr->nm_len - 1);
 	while (p_start <= p_end) {
 		flush_dcache_page(p_start);
 		p_start++;
-- 
1.8.1

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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