linux-kernel - Re: Disabling in-memory write cache for x86-64 in Linux II

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Message-ID: <20131029213037.GB12814@quack.suse.cz>
Date:	Tue, 29 Oct 2013 22:30:37 +0100
From:	Jan Kara <jack@...e.cz>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jan Kara <jack@...e.cz>, Karl Kiniger <karl.kiniger@....ge.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Artem S. Tashkinov" <t.artem@...os.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Disabling in-memory write cache for x86-64 in Linux II

On Tue 29-10-13 13:43:46, Andrew Morton wrote:
> On Tue, 29 Oct 2013 21:30:50 +0100 Jan Kara <jack@...e.cz> wrote:
> 
> > Andrew has queued up a patch series from Maxim Patlasov which removes this
> > caveat but currently we don't have a way admin can switch that from
> > userspace. But I'd like to have that tunable from userspace exactly for the
> > cases as you describe below.
> 
> This?
> 
> commit 5a53748568f79641eaf40e41081a2f4987f005c2
> Author:     Maxim Patlasov <mpatlasov@...allels.com>
> AuthorDate: Wed Sep 11 14:22:46 2013 -0700
> Commit:     Linus Torvalds <torvalds@...ux-foundation.org>
> CommitDate: Wed Sep 11 15:58:04 2013 -0700
> 
>     mm/page-writeback.c: add strictlimit feature
> 
> That's already in mainline, for 3.12.
  Yes, I should have checked the code...

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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