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From: Nick Piggin <npiggin@suse.de>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: [patch] mm: NUMA replicated pagecache
Date: Wed, 14 Feb 2007 05:28:43 +0100	[thread overview]
Message-ID: <20070214042843.GD7125@wotan.suse.de> (raw)
In-Reply-To: <20070213060924.GB20644@wotan.suse.de>

On Tue, Feb 13, 2007 at 07:09:24AM +0100, Nick Piggin wrote:
> 
> Issues:
> - Not commented. I want to change the interfaces around anyway.
> - Breaks filesystems that use filemap_nopage, but don't call filemap_mkwrite
>   (eg. XFS). Fix is trivial for most cases.
> - Haven't tested NUMA yet (only tested via a hack to do per-CPU replication)
> - Would like to be able to control replication via userspace, and maybe
>   even internally to the kernel.
> - Ideally, reclaim might reclaim replicated pages preferentially, however
>   I aim to be _minimally_ intrusive.
> - Would like to replicate PagePrivate, but filesystem may dirty page via
>   buffers. Any solutions? (currently should mount with 'nobh').

Hmm, I guess we should be able to do this for pagecache of regular files,
as filesystems should not have any business dirtying that.

  parent reply	other threads:[~2007-02-14  4:28 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-13  6:09 Nick Piggin
2007-02-13  6:09 ` Nick Piggin
2007-02-14  4:28 ` Nick Piggin [this message]
2007-02-14 18:57 ` Christoph Lameter
2007-02-15  0:07   ` Nick Piggin
2007-02-14 19:00 ` Christoph Lameter
2007-02-15  0:10   ` Nick Piggin
2007-02-15  0:13     ` Christoph Lameter
2007-02-14 20:32 ` Lee Schermerhorn
2007-02-15  0:38   ` Nick Piggin
2007-02-15 23:29     ` Lee Schermerhorn
2007-02-16 13:35       ` Nick Piggin

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