From: Manfred Spraul <manfred@colorfullife.com>
To: Stephen Tweedie <sct@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [Patch 0/10]: Cleanup online reservations for 2.6.9-rc2-mm4.
Date: Thu, 30 Sep 2004 18:00:36 +0200 [thread overview]
Message-ID: <415C2DA4.5080102@colorfullife.com> (raw)
sct wrote:
>Locking
>is minimised: the impact on the hot path consists of nothing more than
>an smp_rmb() before we test sb->s_groups_count. That's a noop on x86,
>
No, wrong way around:
wmb() is empty. rmb() is either lfence or a locked dummy instruction.
--
Manfred
next reply other threads:[~2004-09-30 16:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-30 16:00 Manfred Spraul [this message]
2004-09-30 17:04 ` [Patch 0/10]: Cleanup online reservations for 2.6.9-rc2-mm4 Stephen C. Tweedie
-- strict thread matches above, loose matches on Subject: below --
2004-09-30 13:23 Stephen Tweedie
2004-09-30 18:32 ` Andreas Dilger
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