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Date: Fri, 9 Sep 2016 08:31:27 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Mel Gorman <mgorman@...hsingularity.net>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux-MM <linux-mm@...ck.org>,
Dave Chinner <david@...morbit.com>,
Ying Huang <ying.huang@...el.com>,
Michal Hocko <mhocko@...nel.org>
Subject: Re: [RFC PATCH 0/4] Reduce tree_lock contention during swap and
reclaim of a single file v1
On Fri, Sep 9, 2016 at 2:59 AM, Mel Gorman <mgorman@...hsingularity.net> wrote:
>
> The progression of this series has been unsatisfactory.
Yeah, I have to say that I particularly don't like patch #1. It's some
rather nasty complexity for dubious gains, and holding the lock for
longer times might have downsides.
And the numbers seem to not necessarily be in favor of patch #3
either, which I would have otherwise been predisposed to like (ie it
looks fairly targeted and not very complex).
#2 seems trivially correct but largely irrelevant.
So I think this series is one of those "we need to find that it makes
a big positive impact" to make sense.
Linus
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