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Date: Wed, 29 Jan 2003 18:26:22 +1100
From: Anton Blanchard <anton@samba.org>
To: Stephen Hemminger <shemminger@osdl.org>,
       Linus Torvalds <torvalds@transmeta.com>,
       Andrea Arcangeli <andrea@suse.de>, Andrew Morton <akpm@digeo.com>,
       Andi Kleen <ak@suse.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] (1/4) 2.5.59 fast reader/writer lock for gettimeofday
Message-ID: <20030129072622.GA18250@krispykreme>
References: <1043797341.10150.300.camel@dell_ss3.pdx.osdl.net> <20030128230639.A17385@twiddle.net>
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> These need to be mb(), not wmb(), if you want the bits in between
> to actually happen in between, as with your xtime example.  At
> present there's nothing stoping xtime from being *read* before
> your read from pre_sequence happens.

But with frlocks we synchronise writers with a spinlock, so shouldnt it
provide that synchronisation?

Anton
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