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

* Jens Axboe <axboe@kernel.dk> wrote:

> On 10/25/2017 03:13 AM, Ingo Molnar wrote:
> >
> > * Byungchul Park <byungchul.park@lge.com> 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@oracle.com>
> >> Analyzed-by: Dave Chinner <david@fromorbit.com>
> >> Signed-off-by: Byungchul Park <byungchul.park@lge.com>
> >> ---
> >> 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.

Thanks Jens!

Ingo

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