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

From: Eric Dumazet <[email-masked]>
Date: Thu, 22 Dec 2011 07:16:32 +0100

Le jeudi 22 décembre 2011 à 17:07 +1100, Stephen Rothwell a écrit :
> Hi all,
> 
> After merging the final tree, today's linux-next build (sparc32 defconfig)
> failed like this:
> 
> net/ipv4/route.c: In function 'rt_check_expire':
> net/ipv4/route.c:873:4: error: implicit declaration of function 'prefetch' [-Werror=implicit-function-declaration]
> 
> Caused by commit 9f28a2fc0bd7 ("ipv4: reintroduce route cache garbage
> collector").
> 
> Linus, that commit is in the latest pull request you have from Dave ...
> 
> I applied the following patch for today:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Thu, 22 Dec 2011 17:03:29 +1100
> Subject: [PATCH] ipv4: using prefetch requires including prefetch.h
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  net/ipv4/route.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/net/ipv4/route.c b/net/ipv4/route.c
> index 7460483..9c01f56 100644
> --- a/net/ipv4/route.c
> +++ b/net/ipv4/route.c
> @@ -91,6 +91,7 @@
>  #include <linux/rcupdate.h>
>  #include <linux/times.h>
>  #include <linux/slab.h>
> +#include <linux/prefetch.h>
>  #include <net/dst.h>
>  #include <net/net_namespace.h>
>  #include <net/protocol.h>
> -- 
> 1.7.8.197.g73c6b
> 

Thanks Stephen

I did a revert of a previous patch, and at that time prefetch() was
probably included in some header.

Acked-by: Eric Dumazet <[email-masked]>