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

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Date:	Tue, 26 Apr 2016 15:30:01 +0200
From:	Michal Marek <mmarek@...e.cz>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Nicolas Pitre <nicolas.pitre@...aro.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>,
	Randy Dunlap <rdunlap@...radead.org>
Subject: Re: linux-next: build failure after merge of the block tree

On 2016-04-26 05:38, Stephen Rothwell wrote:
> Hi Nicolas,
> 
> After merging the block tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> ERROR: ".blk_queue_write_cache" [drivers/block/virtio_blk.ko] undefined!
> ERROR: ".blk_queue_write_cache" [drivers/block/ps3disk.ko] undefined!
> ERROR: ".blk_queue_write_cache" [drivers/block/nbd.ko] undefined!
> 
> Caused by commit
> 
>   089095b8eef9 ("kbuild: better abstract vmlinux sequential prerequisites")
> 
> from the kbuild-pite tree.
> 
> I have reverted that commit for today.

I can't reproduce this with today's linux-next and the revert reverted.
Also, CONFIG_TRIM_UNUSED_KSYMS is disabled in the defconfig as expected,
so I have no idea what went wrong.

Michal