Re: Buffer and Page cache coherent? was: Strange IDE performance change in 2.6.1-rc1 (again)
From: Andrew Morton (akpm_at_osdl.org)
Date: 01/05/04
- Previous message: Eric W. Biederman: "Re: 2.6.1-rc1-tiny1 tree for small systems"
- In reply to: Mike Fedyk: "Re: Buffer and Page cache coherent? was: Strange IDE performance change in 2.6.1-rc1 (again)"
- Next in thread: Paolo Ornati: "Re: Strange IDE performance change in 2.6.1-rc1 (again)"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Date: Sun, 4 Jan 2004 16:23:01 -0800 To: Mike Fedyk <mfedyk@matchmail.com>
Mike Fedyk <mfedyk@matchmail.com> wrote:
>
> So in what way is the buffer cache coherent with the pagecache?
>
There is no "buffer cache" in Linux. There is a pagecache for /etc/passwd
and there is a pagecache for /dev/hda1. They are treated pretty much
identically. The kernel attaches buffer_heads to those pagecache pages
when needed - generally when it wants to deal with individual disk blocks.
> Any progress on that pagecache coherent block relocation patch you had for
> ext3? :)
No.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
- Previous message: Eric W. Biederman: "Re: 2.6.1-rc1-tiny1 tree for small systems"
- In reply to: Mike Fedyk: "Re: Buffer and Page cache coherent? was: Strange IDE performance change in 2.6.1-rc1 (again)"
- Next in thread: Paolo Ornati: "Re: Strange IDE performance change in 2.6.1-rc1 (again)"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Relevant Pages
|
|
