linux-kernel - linux-next: build warning after merge of the ceph tree

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Date:	Fri, 6 Sep 2013 15:05:14 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Sage Weil <sage@...dream.net>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: linux-next: build warning after merge of the ceph tree

Hi Sage,

After merging the ceph tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

In file included from fs/ceph/super.h:4:0,
                 from fs/ceph/cache.c:26:
include/linux/ceph/ceph_debug.h:4:0: warning: "pr_fmt" redefined [enabled by default]
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 ^
In file included from include/linux/kernel.h:13:0,
                 from include/asm-generic/bug.h:13,
                 from arch/x86/include/asm/bug.h:38,
                 from include/linux/bug.h:4,
                 from include/linux/thread_info.h:11,
                 from include/linux/preempt.h:9,
                 from include/linux/spinlock.h:50,
                 from include/linux/wait.h:7,
                 from include/linux/fs.h:6,
                 from include/linux/fscache.h:21,
                 from fs/ceph/cache.c:24:
include/linux/printk.h:206:0: note: this is the location of the previous definition
 #define pr_fmt(fmt) fmt
 ^

Probably introduced by commit cb0963fcf836 ("ceph: use fscache as a local
presisent cache").

pr_fmt needs to be defined before printk.h gets included.

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

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