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To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Hannes Reinecke <hare@suse.de>,
        James Bottomley <JBottomley@Odin.com>, Tejun Heo <tj@kernel.org>,
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From: Joseph Salisbury <joseph.salisbury@canonical.com>
Subject: [v4.4-rc1 Regression] scsi: use host wide tags by default
Message-ID: <572CA1F5.2040200@canonical.com>
Date: Fri, 6 May 2016 09:53:57 -0400
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Hello Christoph,

A kernel bug report was opened against Ubuntu [0].  After a kernel
bisect, it was found that reverting the following commit resolved this bug:

commit 64d513ac31bd02a3c9b69ef04444f36c196f9a9d
Author: Christoph Hellwig <hch@lst.de>
Date:   Thu Oct 8 09:28:04 2015 +0100

    scsi: use host wide tags by default


The regression was introduced as of v4.4-rc1.

I was hoping to get your feedback, since you are the patch author.  Do
you think gathering any additional data will help diagnose this issue,
or would it be best to submit a revert request?
      

Thanks,
    
Joe

[0] http://pad.lv/1561830