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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 02 Nov 2015 13:33:13 +0800
From:	Bob Liu <bob.liu@...cle.com>
To:	kbuild test robot <lkp@...el.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
Subject: Re: [PATCH v4 02/10] xen/blkfront: separate per ring information
 out of device info


On 11/02/2015 12:49 PM, kbuild test robot wrote:
> 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
> 

Sorry, I didn't do the compile-test after each patch.

Here is the fix and will update in next version.
[root@...4 linux]# git diff
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 2a557e4..7face5e 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -634,6 +634,7 @@ static int blkif_queue_rq(struct blk_mq_hw_ctx *hctx,
                           const struct blk_mq_queue_data *qd)
 {
        struct blkfront_ring_info *rinfo = (struct blkfront_ring_info *)hctx->driver_data;
+       struct blkfront_info *info = rinfo->dev_info;
 
        blk_mq_start_request(qd->rq);
        spin_lock_irq(&info->io_lock);
[root@...4 linux]# 

Thanks,
-Bob

> 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>
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/