From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Nick Piggin <npiggin@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
shaggy@austin.ibm.com, axboe@kernel.dk, linux-mm@kvack.org,
linux-arch@vger.kernel.org, Clark Williams <williams@redhat.com>,
Ingo Molnar <mingo@elte.hu>,
Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [patch 2/2]: introduce fast_gup
Date: Fri, 18 Apr 2008 08:31:45 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.64.0804180831000.9489@anakin> (raw)
In-Reply-To: <1208453014.7115.39.camel@twins>
On Thu, 17 Apr 2008, Peter Zijlstra wrote:
> +retry:
> + pte.pte_low = ptep->pte_low;
> + smp_rmb();
> + pte.pte_high = ptep->pte_high;
> + smp_rmb();
> + if (unlikely(pte.pte_low != ptep->pte_low))
> + goto retry;
What about using `do { ... } while (...)' instead?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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next prev parent reply other threads:[~2008-04-18 6:31 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-28 2:54 [patch 0/2]: lockless get_user_pages patchset Nick Piggin
2008-03-28 2:55 ` [patch 1/2]: x86: implement pte_special Nick Piggin
2008-03-28 3:23 ` David Miller, Nick Piggin
2008-03-28 3:31 ` Nick Piggin
2008-03-28 3:44 ` David Miller, Nick Piggin
2008-03-28 4:04 ` Nick Piggin
2008-03-28 4:09 ` David Miller, Nick Piggin
2008-03-28 4:15 ` Nick Piggin
2008-03-28 4:16 ` David Miller, Nick Piggin
2008-03-28 4:19 ` Nick Piggin
2008-03-28 4:17 ` Nick Piggin
2008-03-28 3:00 ` [patch 2/2]: introduce fast_gup Nick Piggin
2008-03-28 10:01 ` Jens Axboe
2008-04-17 15:03 ` Peter Zijlstra
2008-04-17 15:25 ` Linus Torvalds
2008-04-17 16:12 ` Peter Zijlstra
2008-04-17 16:18 ` Linus Torvalds
2008-04-17 16:35 ` Peter Zijlstra
2008-04-17 16:40 ` Linus Torvalds
2008-04-17 17:23 ` Peter Zijlstra
2008-04-17 18:28 ` Linus Torvalds
2008-04-22 3:14 ` Nick Piggin
2008-04-18 6:31 ` Geert Uytterhoeven [this message]
2008-04-18 14:40 ` Linus Torvalds
2008-04-18 9:58 ` Jeremy Fitzhardinge
2008-04-21 12:00 ` Avi Kivity
2008-04-21 12:30 ` Peter Zijlstra
2008-04-21 13:26 ` Avi Kivity
2008-04-21 14:35 ` Peter Zijlstra
2008-04-22 3:23 ` Nick Piggin
2008-04-22 7:19 ` Avi Kivity
2008-04-22 8:07 ` Ingo Molnar
2008-04-22 9:42 ` Peter Zijlstra
2008-04-22 9:46 ` Nick Piggin
2008-05-14 18:33 ` Dave Kleikamp
2008-05-15 1:13 ` Nick Piggin
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