LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
	Keith Busch <keith.busch@intel.com>,
	Sagi Grimberg <sagig@mellanox.com>,
	Christoph Hellwig <hch@lst.de>
Subject: linux-next: manual merge of the block tree with Linus' tree
Date: Mon, 7 Mar 2016 14:08:26 +1100	[thread overview]
Message-ID: <20160307140826.7d59fdf2@canb.auug.org.au> (raw)

Hi Jens,

Today's linux-next merge of the block tree got a conflict in:

  drivers/nvme/host/pci.c

between commit:

  ff23a2a15a21 ("NVMe: Poll device while still active during remove")
  f8e68a7c9af5 ("NVMe: Rate limit nvme IO warnings")
  b00a726a9fd8 ("NVMe: Don't unmap controller registers on reset")
  646017a612e7 ("NVMe: Fix namespace removal deadlock")
  f58944e265d4 ("NVMe: Simplify device reset failure")

from Linus' tree and commit:

  949928c1c731 ("NVMe: Fix possible queue use after freed")
  1b3c47c182aa ("nvme: Log the ctrl device name instead of the underlying pci device name")
  9396dec916c0 ("nvme: use a work item to submit async event requests")
  2d55cd5f511d ("nvme: replace the kthread with a per-device watchdog timer")

from the block tree.

I fixed it up (maybe - see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell

diff --cc drivers/nvme/host/pci.c
index 680f5780750c,d47b08783110..000000000000
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@@ -310,10 -288,10 +299,10 @@@ static void nvme_complete_async_event(s
  
  	switch (result & 0xff07) {
  	case NVME_AER_NOTICE_NS_CHANGED:
- 		dev_info(dev->dev, "rescanning\n");
+ 		dev_info(dev->ctrl.device, "rescanning\n");
 -		queue_work(nvme_workq, &dev->scan_work);
 +		nvme_queue_scan(dev);
  	default:
- 		dev_warn(dev->dev, "async event result %08x\n", result);
+ 		dev_warn(dev->ctrl.device, "async event result %08x\n", result);
  	}
  }
  
@@@ -1018,7 -992,7 +1011,7 @@@ static void nvme_cancel_queue_ios(struc
  	if (!blk_mq_request_started(req))
  		return;
  
- 	dev_dbg_ratelimited(nvmeq->q_dmadev,
 -	dev_warn(nvmeq->dev->ctrl.device,
++	dev_dbg_ratelimited(nvmeq->dev->ctrl.device,
  		 "Cancelling I/O %d QID %d\n", req->tag, nvmeq->qid);
  
  	status = NVME_SC_ABORT_REQ;
@@@ -1709,8 -1651,14 +1676,14 @@@ static int nvme_dev_add(struct nvme_de
  		if (blk_mq_alloc_tag_set(&dev->tagset))
  			return 0;
  		dev->ctrl.tagset = &dev->tagset;
+ 	} else {
+ 		blk_mq_update_nr_hw_queues(&dev->tagset, dev->online_queues - 1);
+ 
+ 		/* Free previously allocated queues that are no longer usable */
+ 		nvme_free_queues(dev, dev->online_queues);
  	}
+ 
 -	queue_work(nvme_workq, &dev->scan_work);
 +	nvme_queue_scan(dev);
  	return 0;
  }
  
@@@ -1845,10 -1763,10 +1774,10 @@@ static void nvme_dev_disable(struct nvm
  	int i;
  	u32 csts = -1;
  
- 	nvme_dev_list_remove(dev);
+ 	del_timer_sync(&dev->watchdog_timer);
  
  	mutex_lock(&dev->shutdown_lock);
 -	if (dev->bar) {
 +	if (pci_is_enabled(to_pci_dev(dev->dev))) {
  		nvme_stop_queues(&dev->ctrl);
  		csts = readl(dev->bar + NVME_REG_CSTS);
  	}
@@@ -1951,13 -1859,12 +1880,12 @@@ static void nvme_reset_work(struct work
  
  	result = nvme_setup_io_queues(dev);
  	if (result)
 -		goto free_tags;
 +		goto out;
  
  	dev->ctrl.event_limit = NVME_NR_AEN_COMMANDS;
+ 	queue_work(nvme_workq, &dev->async_work);
  
- 	result = nvme_dev_list_add(dev);
- 	if (result)
- 		goto out;
+ 	mod_timer(&dev->watchdog_timer, round_jiffies(jiffies + HZ));
  
  	/*
  	 * Keep the controller around but remove all namespaces if we don't have
@@@ -2085,11 -1988,6 +2014,10 @@@ static int nvme_probe(struct pci_dev *p
  	dev->dev = get_device(&pdev->dev);
  	pci_set_drvdata(pdev, dev);
  
 +	result = nvme_dev_map(dev);
 +	if (result)
 +		goto free;
 +
- 	INIT_LIST_HEAD(&dev->node);
  	INIT_WORK(&dev->scan_work, nvme_dev_scan);
  	INIT_WORK(&dev->reset_work, nvme_reset_work);
  	INIT_WORK(&dev->remove_work, nvme_remove_dead_ctrl_work);
@@@ -2145,8 -2042,11 +2078,11 @@@ static void nvme_remove(struct pci_dev 
  {
  	struct nvme_dev *dev = pci_get_drvdata(pdev);
  
 +	set_bit(NVME_CTRL_REMOVING, &dev->flags);
+ 	del_timer_sync(&dev->watchdog_timer);
+ 
  	pci_set_drvdata(pdev, NULL);
+ 	flush_work(&dev->async_work);
 -	flush_work(&dev->reset_work);
  	flush_work(&dev->scan_work);
  	nvme_remove_namespaces(&dev->ctrl);
  	nvme_uninit_ctrl(&dev->ctrl);

             reply	other threads:[~2016-03-07  3:08 UTC|newest]

Thread overview: 103+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-07  3:08 Stephen Rothwell [this message]
  -- strict thread matches above, loose matches on Subject: below --
2021-11-25 23:38 Stephen Rothwell
2021-11-26  5:30 ` Christoph Hellwig
2021-11-01  1:36 Stephen Rothwell
2021-10-25  2:26 Stephen Rothwell
2021-08-17  5:25 Stephen Rothwell
2021-08-17 16:40 ` Tejun Heo
2021-08-17 16:50   ` Christoph Hellwig
2021-08-17 16:52     ` Tejun Heo
2021-08-09  4:29 Stephen Rothwell
2021-08-09 14:05 ` Jens Axboe
2020-12-14  3:56 Stephen Rothwell
2020-09-23  4:05 Stephen Rothwell
2020-01-28  0:38 Stephen Rothwell
2020-01-28  0:40 ` Jens Axboe
2019-04-15  3:06 Stephen Rothwell
2019-04-15 14:15 ` Jens Axboe
2019-04-15  3:00 Stephen Rothwell
2019-03-05  1:48 Stephen Rothwell
2018-11-16  2:19 Stephen Rothwell
2018-11-16  2:21 ` Jens Axboe
2017-09-04  3:09 Stephen Rothwell
2017-06-30  2:08 Stephen Rothwell
2017-06-26  2:44 Stephen Rothwell
2017-06-26  2:28 Stephen Rothwell
2017-06-23  3:06 Stephen Rothwell
2017-06-23  3:09 ` Jens Axboe
2017-06-23  3:24   ` Stephen Rothwell
2017-06-23  3:27     ` Jens Axboe
2017-06-23  3:33       ` Stephen Rothwell
2017-06-23  3:56         ` Jens Axboe
2017-06-23  3:29     ` Jens Axboe
2016-07-21  3:08 Stephen Rothwell
2016-07-08  3:07 Stephen Rothwell
2016-07-08  4:14 ` Stephen Rothwell
2016-07-08 14:11   ` Konrad Rzeszutek Wilk
2016-06-14  2:44 Stephen Rothwell
2016-05-03  4:25 Stephen Rothwell
2016-05-03 20:03 ` Jens Axboe
2016-03-07  3:12 Stephen Rothwell
2016-03-01  0:25 Stephen Rothwell
2016-02-18  2:10 Stephen Rothwell
2016-01-13  2:07 Stephen Rothwell
2015-12-31  3:34 Stephen Rothwell
2016-01-21 22:46 ` Stephen Rothwell
2016-01-21 22:48   ` Jens Axboe
2015-12-14  1:36 Stephen Rothwell
2015-12-07  4:27 Stephen Rothwell
2015-12-07  4:16 Stephen Rothwell
2015-10-06  1:33 Stephen Rothwell
2015-08-27  2:36 Stephen Rothwell
2015-08-17  4:04 Stephen Rothwell
2015-06-04  4:51 Stephen Rothwell
2015-06-04  4:36 Stephen Rothwell
2015-06-03  3:33 Stephen Rothwell
2015-06-03  3:28 Stephen Rothwell
2015-06-01  4:56 Stephen Rothwell
2015-06-01 14:31 ` Mike Snitzer
2015-04-13  4:58 Stephen Rothwell
2015-01-27  4:03 Stephen Rothwell
2014-03-17  3:55 Stephen Rothwell
2014-03-10 15:39 Mark Brown
2013-11-01  3:25 Stephen Rothwell
2013-09-25  3:11 Stephen Rothwell
2013-05-01  5:17 Stephen Rothwell
2013-03-26  2:05 Stephen Rothwell
2012-12-07  2:44 Stephen Rothwell
2012-10-31  2:04 Stephen Rothwell
2012-10-31 13:55 ` Ben Hutchings
2012-10-31 13:57   ` Jens Axboe
2012-11-01 10:04   ` Herton Ronaldo Krzesinski
2011-11-01  5:15 Stephen Rothwell
2011-11-01  8:09 ` Jens Axboe
2011-11-01  9:03   ` Stephen Rothwell
2011-05-19  1:34 Stephen Rothwell
2011-03-21  0:43 Stephen Rothwell
2011-03-21  9:48 ` Jens Axboe
2011-03-07  2:19 Stephen Rothwell
2011-03-07  6:36 ` Tejun Heo
2011-03-07  8:42   ` Jens Axboe
2011-03-07 10:41     ` Sedat Dilek
2011-03-07 10:47       ` Tejun Heo
2011-03-07 11:14         ` Sedat Dilek
2011-03-07 11:16           ` Jens Axboe
2011-03-07 11:25             ` Sedat Dilek
2011-03-07 11:26               ` Jens Axboe
2011-03-07 11:35                 ` Sedat Dilek
2011-03-07 11:46                   ` Jens Axboe
2011-03-07 12:26                     ` Sedat Dilek
2011-03-07 11:42               ` Stephen Rothwell
2011-03-07 11:38             ` Stephen Rothwell
2010-09-16  2:04 Stephen Rothwell
2010-04-29  3:52 Stephen Rothwell
2010-04-29  7:33 ` Jens Axboe
2010-03-17  1:52 Stephen Rothwell
2010-03-17  2:03 ` Li Zefan
2010-02-25  3:10 Stephen Rothwell
2010-02-25  7:47 ` Jens Axboe
2010-02-25 23:11   ` Stephen Rothwell
2009-06-25  3:15 Stephen Rothwell
2009-06-25  3:30 ` Stephen Rothwell
2009-06-25  6:38   ` Jens Axboe
2009-06-25  7:42     ` Jens Axboe

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20160307140826.7d59fdf2@canb.auug.org.au \
    --to=sfr@canb.auug.org.au \
    --cc=axboe@kernel.dk \
    --cc=hch@lst.de \
    --cc=keith.busch@intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-next@vger.kernel.org \
    --cc=sagig@mellanox.com \
    --subject='Re: linux-next: manual merge of the block tree with Linus'\'' tree' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).