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Date: Thu, 18 Oct 2001 12:18:12 -0400 (EDT)
From: Alexander Viro <viro@math.psu.edu>
To: Andreas Dilger <adilger@turbolabs.com>
cc: Kamil Iskra <kamil@science.uva.nl>, Steve Kieu <haiquy@yahoo.com>,
        kernel <linux-kernel@vger.kernel.org>
Subject: Re: Poor floppy performance in kernel 2.4.10
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On Thu, 18 Oct 2001, Andreas Dilger wrote:

> I think this is a result of the "blockdev in pagecache" change added in
> 2.4.10.  One of the byproducts of this change is that if a block device
> is closed (no other openers) then all of the pages from this device are
> dropped from the cache.  In the case of a floppy drive, this is very
> important, as you don't want to be cacheing data from one floppy after
> you have inserted a new floppy.


RTFS.  That _exactly_ matches the behaviour of buffer-cache variant.

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