From: Linus Torvalds <torvalds@linux-foundation.org>
To: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <npiggin@suse.de>,
Linux Memory Management List <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [patch] mm: fix race in COW logic
Date: Sun, 22 Jun 2008 11:18:07 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.1.10.0806221115070.2926@woody.linux-foundation.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0806221854050.5466@blonde.site>
On Sun, 22 Jun 2008, Hugh Dickins wrote:
>
> I'm puzzled.
No, you're right. It was me who was confused. The pages are different,
duh, and yes, there's a SMP memory ordering issue between updating the
new page table entry and decrementing the use count for the old page.
My bad. Ignore me.
Linus
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next prev parent reply other threads:[~2008-06-22 18:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-22 15:30 Nick Piggin
2008-06-22 17:11 ` Hugh Dickins
2008-06-22 17:35 ` Linus Torvalds
2008-06-22 18:10 ` Hugh Dickins
2008-06-22 18:18 ` Linus Torvalds [this message]
2008-06-23 1:49 ` Nick Piggin
2008-06-23 10:04 ` Hugh Dickins
2008-06-23 12:18 ` Nick Piggin
2008-06-23 12:30 ` Nick Piggin
2008-06-23 15:39 ` Hugh Dickins
2008-06-27 9:19 ` Peter Zijlstra
2008-06-27 9:13 ` Peter Zijlstra
2008-06-23 1:52 ` Nick Piggin
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