Re: [PATCH v5 9/9] block: Assign a lock_class per gendisk used for wait_for_completion()

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On 10/25/2017 03:13 AM, Ingo Molnar wrote:
> 
> * Byungchul Park <byungchul.park@xxxxxxx> wrote:
> 
>> Darrick posted the following warning and Dave Chinner analyzed it:
>>
>>> ======================================================
>>> WARNING: possible circular locking dependency detected
>>> 4.14.0-rc1-fixes #1 Tainted: G        W
> 
>> Reported-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>> Analyzed-by: Dave Chinner <david@xxxxxxxxxxxxx>
>> Signed-off-by: Byungchul Park <byungchul.park@xxxxxxx>
>> ---
>>  block/bio.c           |  2 +-
>>  block/genhd.c         | 10 ++--------
>>  include/linux/genhd.h | 22 ++++++++++++++++++++--
>>  3 files changed, 23 insertions(+), 11 deletions(-)
> 
> Ok, this patch looks good to me now, I'll wait to get an Ack or Nak from Jens for 
> these changes.
> 
> Jens: this patch has some dependencies in prior lockdep changes, so I'd like to 
> carry it in the locking tree for a v4.15 merge.

Looks fine to me, you can add my reviewed-by and carry it in your tree.

-- 
Jens Axboe

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