linux-kernel - Re: [PATCH v4 02/10] xen/blkfront: separate per ring information out of device info

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Date:	Mon, 2 Nov 2015 12:49:57 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Bob Liu <bob.liu@...cle.com>
Cc:	kbuild-all@...org, xen-devel@...ts.xen.org,
	linux-kernel@...r.kernel.org, roger.pau@...rix.com,
	konrad.wilk@...cle.com, felipe.franciosi@...rix.com, axboe@...com,
	avanzini.arianna@...il.com, rafal.mielniczuk@...rix.com,
	jonathan.davies@...rix.com, david.vrabel@...rix.com,
	Bob Liu <bob.liu@...cle.com>
Subject: Re: [PATCH v4 02/10] xen/blkfront: separate per ring information out
 of device info

Hi Bob,

[auto build test ERROR on v4.3-rc7 -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Bob-Liu/xen-block-multi-hardware-queues-rings-support/20151102-122806
config: x86_64-allyesconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the linux-review/Bob-Liu/xen-block-multi-hardware-queues-rings-support/20151102-122806 HEAD b29fe44b095649f8faddc4474daba13199c1f5e0 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   drivers/block/xen-blkfront.c: In function 'blkif_queue_rq':
>> drivers/block/xen-blkfront.c:639:17: error: 'info' undeclared (first use in this function)
     spin_lock_irq(&info->io_lock);
                    ^
   drivers/block/xen-blkfront.c:639:17: note: each undeclared identifier is reported only once for each function it appears in

vim +/info +639 drivers/block/xen-blkfront.c

907c3eb18 Bob Liu             2015-07-13  633  static int blkif_queue_rq(struct blk_mq_hw_ctx *hctx,
907c3eb18 Bob Liu             2015-07-13  634  			   const struct blk_mq_queue_data *qd)
9f27ee595 Jeremy Fitzhardinge 2007-07-17  635  {
2a8974fd4 Bob Liu             2015-11-02  636  	struct blkfront_ring_info *rinfo = (struct blkfront_ring_info *)hctx->driver_data;
9f27ee595 Jeremy Fitzhardinge 2007-07-17  637  
907c3eb18 Bob Liu             2015-07-13  638  	blk_mq_start_request(qd->rq);
907c3eb18 Bob Liu             2015-07-13 @639  	spin_lock_irq(&info->io_lock);
2a8974fd4 Bob Liu             2015-11-02  640  	if (RING_FULL(&rinfo->ring))
907c3eb18 Bob Liu             2015-07-13  641  		goto out_busy;
9f27ee595 Jeremy Fitzhardinge 2007-07-17  642  

:::::: The code at line 639 was first introduced by commit
:::::: 907c3eb18e0bd86ca12a9de80befe8e3647bac3e xen-blkfront: convert to blk-mq APIs

:::::: TO: Bob Liu <bob.liu@...cle.com>
:::::: CC: David Vrabel <david.vrabel@...rix.com>

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Download attachment ".config.gz" of type "application/octet-stream" (50361 bytes)