From: Linus Torvalds <torvalds@transmeta.com>
To: Robert Love <rml@tech9.net>
Cc: Andrew Morton <akpm@zip.com.au>,
riel@conectiva.com.br, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH] updated low-latency zap_page_range
Date: Wed, 24 Jul 2002 18:21:07 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.44.0207241820170.5944-100000@home.transmeta.com> (raw)
In-Reply-To: <1027559785.17950.3.camel@sinai>
On 24 Jul 2002, Robert Love wrote:
>
> if (preempt_count() == 1 && need_resched())
>
> Then we get "if (0 && ..)" which should hopefully be evaluated away.
I think preempt_count() is not unconditionally 0 for non-preemptible
kernels, so I don't think this is a compile-time constant.
That may be a bug in preempt_count(), of course.
Linus
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next prev parent reply other threads:[~2002-07-25 1:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-25 0:29 Robert Love
2002-07-25 0:45 ` Andrew Morton
2002-07-25 1:16 ` Robert Love
2002-07-25 1:19 ` Andrew Morton
2002-07-25 1:21 ` Linus Torvalds [this message]
2002-07-25 1:29 ` Robert Love
2002-07-25 1:39 ` george anzinger
2002-07-25 5:19 ` Linus Torvalds
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