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Date:      Thu, 27 Sep 2001 05:56:23 +1000 (EST)
From:      Bruce Evans <bde@zeta.org.au>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        <cvs-all@FreeBSD.org>, <cvs-committers@FreeBSD.org>
Subject:   RE: cvs commit: src/sys/sys _lock.h lock.h
Message-ID:  <20010927054324.Q40707-100000@delplex.bde.org>
In-Reply-To: <XFMail.010926113525.jhb@FreeBSD.org>

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On Wed, 26 Sep 2001, John Baldwin wrote:

> On 25-Sep-01 John Baldwin wrote:
> > jhb         2001/09/25 16:51:54 PDT
> >
> >   Modified files:
> >     sys/sys              _lock.h lock.h
> >   Log:
> >   Move the definition of LOCK_DEBUG from sys/lock.h to sys/_lock.h.
>
> This fixes the panic on the vnode interlock.  The problem is that vfs_vnops.c
> wasn't including sys/lock.h, so LOCK_DEBUG wasn't defined, so it wasn't getting
> LOCK_DEBUG defined properly and was just inling the mutex operation and not
> calling witness.  Arguably, I should cause the compile to break when mutex.h is
> included w/o lock.h, but this will work for now.  Also, getting LOCK_DEBUG
> right really depends on knowing the value of KTR_COMPILE which requires
> including sys/ktr.h, so in theory sys/_lock.h should either include sys/ktr.h
> or mandate it's inculsion in the _KERNEL case.  Bruce, do you have any
> preferences on this?

Including <sys/ktr.h> in <sys/_lock.h> would defeat the point of having
<sys/_lock.h>.  Try to make things break if LOCK_DEBUG is used and the
prerequisites for getting it right are not included.

Bruce


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