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Re: [PATCH v8 11/14] lockdep: Apply crossrelease to PG_locked locks

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On Mon, Aug 07, 2017 at 04:12:58PM +0900, Byungchul Park wrote:
> Although lock_page() and its family can cause deadlock, the lock
> correctness validator could not be applied to them until now, becasue
> things like unlock_page() might be called in a different context from
> the acquisition context, which violates lockdep's assumption.
> 
> Thanks to CONFIG_LOCKDEP_CROSSRELEASE, we can now apply the lockdep
> detector to page locks. Applied it.

Is there any reason excluding applying it into PG_locked?

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[PATCH v8 00/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
  [PATCH v8 08/14] lockdep: Make print_circular_bug() aware of crossrelease Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    [tip:locking/core] locking/lockdep: Make print_circular_bug() aware  of crossrelease tip-bot for Byungchul Park <tipbot@zytor.com> - 2017-08-10 14:30 +0200
  [PATCH v8 05/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    Re: [PATCH v8 05/14] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-08-09 16:10 +0200
      Re: [PATCH v8 05/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-10 03:40 +0200
        Re: [PATCH v8 05/14] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-08-10 11:30 +0200
    [tip:locking/core] locking/lockdep: Implement the 'crossrelease'  feature tip-bot for Byungchul Park <tipbot@zytor.com> - 2017-08-10 14:30 +0200
  [PATCH v8 11/14] lockdep: Apply crossrelease to PG_locked locks Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    Re: [PATCH v8 11/14] lockdep: Apply crossrelease to PG_locked locks Byungchul Park <byungchul.park@lge.com> - 2017-08-10 03:40 +0200
      Re: [PATCH v8 11/14] lockdep: Apply crossrelease to PG_locked locks Peter Zijlstra <peterz@infradead.org> - 2017-08-10 11:30 +0200
  [PATCH v8 10/14] pagemap.h: Remove trailing white space Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
  [PATCH v8 07/14] lockdep: Handle non(or multi)-acquisition of a crosslock Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    [tip:locking/core] locking/lockdep: Handle non(or  multi)-acquisition of a crosslock tip-bot for Byungchul Park <tipbot@zytor.com> - 2017-08-10 14:30 +0200
  [PATCH v8 12/14] lockdep: Apply lock_acquire(release) on __Set(__Clear)PageLocked Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
  [PATCH v8 14/14] lockdep: Crossrelease feature documentation Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    [tip:locking/core] locking/lockdep: Add 'crossrelease' feature  documentation tip-bot for Byungchul Park <tipbot@zytor.com> - 2017-08-10 14:30 +0200
  [PATCH v8 09/14] lockdep: Apply crossrelease to completions Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    Re: [PATCH v8 09/14] lockdep: Apply crossrelease to completions Peter Zijlstra <peterz@infradead.org> - 2017-08-09 12:00 +0200
      Re: [PATCH v8 09/14] lockdep: Apply crossrelease to completions Peter Zijlstra <peterz@infradead.org> - 2017-08-09 12:30 +0200
        Re: [PATCH v8 09/14] lockdep: Apply crossrelease to completions Byungchul Park <byungchul.park@lge.com> - 2017-08-10 03:30 +0200
    [tip:locking/core] locking/lockdep: Apply crossrelease to  completions tip-bot for Byungchul Park <tipbot@zytor.com> - 2017-08-10 14:30 +0200
  [PATCH v8 04/14] lockdep: Make check_prev_add() able to handle external stack_trace Byungchul Park <byungchul.park@lge.com> - 2017-08-07 09:20 +0200
    [tip:locking/core] locking/lockdep: Make check_prev_add() able to  handle external stack_trace tip-bot for Byungchul Park <tipbot@zytor.com> - 2017-08-10 14:30 +0200
  Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-08-09 18:00 +0200
    Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-10 03:00 +0200
      Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-10 05:50 +0200
      Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-10 13:00 +0200
    Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-10 11:40 +0200
      Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Peter Zijlstra <peterz@infradead.org> - 2017-08-10 13:00 +0200
  Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Ingo Molnar <mingo@kernel.org> - 2017-08-10 13:20 +0200
    Re: [PATCH v8 00/14] lockdep: Implement crossrelease feature Byungchul Park <byungchul.park@lge.com> - 2017-08-10 13:50 +0200

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