Messages in this thread | | | Date | Thu, 24 May 2018 13:49:31 +0100 | From | Will Deacon <> | Subject | Re: write_lock_irq(&tasklist_lock) |
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On Wed, May 23, 2018 at 09:26:35AM -0700, Linus Torvalds wrote: > On Wed, May 23, 2018 at 8:35 AM Will Deacon <will.deacon@arm.com> wrote: > > > In other words, qrwlock requires consistent locking order wrt spinlocks. > > I *thought* lockdep already tracked and detected this. Or is that only with > with the sleeping versions?
There are patches in-flight to detect this:
https://marc.info/?l=linux-kernel&m=152483640529740&w=2k
as part of Boqun's work into recursive read locking.
Will
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