linux-kernel - Re: linux-next: build failure after merge of the bkl-config tree

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Message-Id: <201103151359.12569.arnd@arndb.de>
Date:	Tue, 15 Mar 2011 13:59:12 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andy Adamson <andros@...app.com>,
	Boaz Harrosh <bharrosh@...asas.com>,
	Dean Hildebrand <dhildeb@...ibm.com>,
	Fred Isaman <iisaman@...i.umich.edu>,
	Mike Sager <sager@...app.com>,
	Fred Isaman <iisaman@...app.com>,
	Mingyang Guo <guomingyang@...hpc.ac.cn>,
	Ricardo Labiaga <Ricardo.Labiaga@...app.com>,
	Tao Guo <guotao@...hpc.ac.cn>,
	Benny Halevy <bhalevy@...asas.com>,
	Trond Myklebust <trond.myklebust@....uio.no>
Subject: Re: linux-next: build failure after merge of the bkl-config tree

On Tuesday 15 March 2011, Stephen Rothwell wrote:
> After merging the bkl-config tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> fs/nfs/read.c:21:28: error: linux/smp_lock.h: No such file or directory
> 
> Caused by commit 64419a9b2093 ("NFSv4.1: generic read") from the nfs tree
> interacting with commit 4ba8216cd905 ("BKL: That's all, folks") from the
> bkl-config tree.
> 
> I couldn't see that this include file was needed, so I applied the patch
> below (which Trond could apply to his tree, I am pretty sure).  (I am not
> sure why module.h is included either.)
> 
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Tue, 15 Mar 2011 18:37:09 +1100
> Subject: [PATCH] nfs: BKL is no longer needed, so remove the include
> 

The fix is good. I have one patch in bkl-config that removes all instances
of #include <linux/smp_lock.h> treewide. Obviously that doesn't
help where new ones creep in, so we have to eliminate them one
by one.

	Arnd
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