linux-kernel - Re: [malware-list] [RFC 0/5] [TALPA] Intro to a linux interface for on access scanning

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Message-Id: <20080806094515.A6524316920@pmx1.sophos.com>
Date:	Wed, 6 Aug 2008 10:44:22 +0100
From:	tvrtko.ursulin@...hos.com
To:	Nick Piggin <nickpiggin@...oo.com.au>
Cc:	Eric Paris <eparis@...hat.com>, linux-kernel@...r.kernel.org,
	malware-list@...ts.printk.net
Subject: Re: [malware-list] [RFC 0/5] [TALPA] Intro to a linux interface for	on
 access scanning

Nick Piggin wrote on 05/08/2008 19:08:05:

> On Tuesday 05 August 2008 07:00, Eric Paris wrote:
> > 5. Define which filesystems are cacheable and which are not
> 
> This is practically impossible to do completely without rewriting a lot
> of code (which will never be accepted). I don't see why it is needed 
though
> as the filesystem cache is supposed to be kept coherent with disk.

Problem is with network filesystems. So could it be a flag somewhere per 
filesystem which would say something like "this filesystem guarantees 
content of a file cannot change without get_write_access or 
file_update_time being called locally"? That doesn't sound like a lot of 
code so what am I missing?

Tvrtko


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