Re: [Patch 0/10]: Cleanup online reservations for 2.6.9-rc2-mm4.

From: Manfred Spraul
Date: Thu Sep 30 2004 - 11:04:29 EST


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

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