linux-kernel - Re: [RFC][PATCH] make global bitlock waitqueues per-node

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Message-ID: <CA+55aFwy6+ya_E8N3DFbrq2XjbDs8LWe=W_qW8awimbxw26bJw@mail.gmail.com>
Date:   Tue, 20 Dec 2016 10:02:46 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     Bob Peterson <rpeterso@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Steven Whitehouse <swhiteho@...hat.com>,
        Andrew Lutomirski <luto@...nel.org>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        linux-mm <linux-mm@...ck.org>
Subject: Re: [RFC][PATCH] make global bitlock waitqueues per-node

On Tue, Dec 20, 2016 at 9:31 AM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> I'll go back and try to see why the page flag contention patch didn't
> get applied.

Ahh, a combination of warring patches by Nick and PeterZ, and worry
about the page flag bits.

Damn. I had mentally marked this whole issue as "solved". But the fact
that we know how to solve it doesn't mean it's done.

               Linus