From: Andrew Morton <akpm@digeo.com>
To: Mark Atwood <mra@pobox.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to invalidate the filesystem buffer cache?
Date: Wed, 20 Nov 2002 18:42:15 -0800 [thread overview]
Message-ID: <3DDC4807.D1349FC7@digeo.com> (raw)
In-Reply-To: m365urfzat.fsf@marka.linux.digeo.com
Mark Atwood wrote:
>
> Like the question says, is there a way to invalidate the whole buffer
> cache at once?
>
"There is no buffer cache".
There's a pagecache, which caches the contents of files and block devices.
You can invalidate the block device pagecache with `blockdev --flushbufs' but
there is no interface for invalidating the pagecache of regular files.
Allocating and then freeing a ton of anonymous memory, then running a
swapoff/swapon cycle might suit.
prev parent reply other threads:[~2002-11-21 2:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-21 1:20 Fwd: Re: agp driver update for linux Rizsanyi Zsolt
2002-11-21 2:10 ` How to invalidate the filesystem buffer cache? Mark Atwood
2002-11-21 2:16 ` Rik van Riel
2002-11-21 2:42 ` Andrew Morton [this message]
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