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

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Message-Id: <20111216125001.33635d34b5397292e6190b9a@canb.auug.org.au>
Date:	Fri, 16 Dec 2011 12:50:01 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Tejun Heo <tj@...nel.org>, majianpeng <majianpeng@...il.com>
Subject: linux-next: build failure after merge of the block tree

Hi Jens,

After merging the block tree, today's linux-next build (x86_64
allmodconfig) failed like this:

block/cfq-iosched.c: In function 'cfq_init_queue':
block/cfq-iosched.c:3690:14: error: 'cic_index_lock' undeclared (first use in this function)
block/cfq-iosched.c:3691:15: error: 'cic_index_ida' undeclared (first use in this function)
block/cfq-iosched.c:3691:34: error: 'struct cfq_data' has no member named 'cic_index'

Presumably this was not build tested with CONFIG_CFQ_GROUP_IOSCHED set.

Caused by commit a73f730d013f ("block, cfq: move cfqd->cic_index to
q->id") interacting with commit 2984ff38ccf6 ("cfq-iosched: free
cic_index if blkio_alloc_blkg_stats fails").

I have used the block tree from next-20111215 for today.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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