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Date:      Wed, 22 Jan 2003 10:19:58 +1100 (EST)
From:      Bruce Evans <bde@zeta.org.au>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        Alfred Perlstein <alfred@FreeBSD.org>, <cvs-committers@FreeBSD.org>, <cvs-all@FreeBSD.org>
Subject:   Re: cvs commit: src/sys/alpha/alpha busdma_machdep.c src/sys/alpha/osf1 imgact_osf1.c osf1_misc.c src/sys/cam cam_periph.c cam_sim.c       cam_xpt.c src/sys/cam/scsi scsi_cd.c scsi_ch.c scsi
Message-ID:  <20030122100003.K30758-100000@gamplex.bde.org>
In-Reply-To: <Pine.NEB.3.96L.1030121092713.60586B-100000@fledge.watson.org>

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On Tue, 21 Jan 2003, Robert Watson wrote:

> On Tue, 21 Jan 2003, Alfred Perlstein wrote:
>
> >   Log:
> >   Remove M_TRYWAIT/M_WAITOK/M_WAIT.  Callers should use 0.
> >   Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
>
> Hmm.  I guess I missed the discussion; I'm a bit behind on mailing lists.

I noticed a null discussion.  I didn't respond since I stopped worrying
about -current after GEOM made it unusable for me, and the proposed changed
was so obviously wrong that Someone Else would respond.

> Hmm.  I guess I missed the discussion; I'm a bit behind on mailing lists.
> To improve code portability and careful thinking by developers, what I'd
> like to see is something more like the following: M_WAITOK, which
> explicitly requests sleeping indefinitely, M_NOWAIT, which explicitly
> requests no sleeping.  Rather than a "default" value, a

That's exactly what M_WAITOK was supposed to do.  Developers just had to
think about it since it wasn't really a flag so it was not easy to check
automatically.

Bruce


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