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Re: Linux page cache doubt

To: Christoph Hellwig <hch@xxxxxxxxxx>
Subject: Re: Linux page cache doubt
From: Steve Lord <lord@xxxxxxx>
Date: Thu, 25 Oct 2001 06:58:12 -0500
Cc: Steve Lord <lord@xxxxxxx>, Arun Ramakrishnan <ramakria@xxxxxxxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: Message from Christoph Hellwig <hch@xxxxxxxxxx> of "Thu, 25 Oct 2001 08:37:41 +0200." <20011025083741.A3180@xxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
> On Wed, Oct 24, 2001 at 05:36:41PM -0500, Steve Lord wrote:
> > Hi Arun, well filesystem I/O is divided into two chunks - file data
> > which is definitely page cache based, and metadata which is done through
> > various means depending on:
> > 
> >     o which kernel you are running
> >     o which filesystem
> > 
> > All filesystems that I am aware of except for XFS use buffer heads and the
> > block cache for metadata I/O.
> 
> JFS uses the pagecache for all I/O - for metadata they have an additional
> 'metapage' abstraction.

Ah ha, Steve Best and co were asking about pagebuf a year or so back. I should
take a look sometime.

Steve

> 
>       Christoph
> 
> -- 
> Of course it doesn't work. We've performed a software upgrade.



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