linux-kernel - Re: [PATCH] mm: raise MemFree by reverting percpu_pagelist

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Message-ID: <CA+55aFzKkR4sntktx63jstftfw_Grf1A5D97VzXo=hGS2R34=Q@mail.gmail.com>
Date:	Fri, 11 May 2012 09:26:28 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Sasha Levin <levinsasha928@...il.com>,
	Minchan Kim <minchan@...nel.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: raise MemFree by reverting percpu_pagelist_fraction
 to 0

On Fri, May 11, 2012 at 1:00 AM, Hugh Dickins <hughd@...gle.com> wrote:
>
> Commit 93278814d359 "mm: fix division by 0 in percpu_pagelist_fraction()"
> mistakenly initialized percpu_pagelist_fraction to the sysctl's minimum 8,
> which leaves 1/8th of memory on percpu lists (on each cpu??); but most of
> us expect it to be left unset at 0 (and it's not then used as a divisor).

Applied.

                      Linus
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