Cc: <alan@...>, <andi@...>, Arjan van de Ven <arjan@...>, Eric Paris <eparis@...>, <greg@...>, <hch@...>, <linux-kernel@...>, <linux-kernel-owner@...>, <malware-list@...>, <peterz@...>, <riel@...>, <tytso@...>, <viro@...>
It can never be free - what ever you do it has to happen some time and
that can and will clash with something else. So your reason why it is
wrong is a bit to simplistic.
The first thing you have to make clear is whether in your vision inode
clean-dirty-unknown status is persistent or not? But in any case I think
you are making a problem where there isn't one, think about it a bit.
But the idea about the ability to make a clean copy is interesting. So we
would need a copy done without userspace intervention and preserving the
inode cache status alongside it. Maybe splice or tee could easily do it?
Although I am not sure how often copying would happen and whether this
would be such a gain.
--
Tvrtko A. Ursulin
Senior Software Engineer, Sophos
"Views and opinions expressed in this email are strictly those of the
author.
The contents has not been reviewed or approved by Sophos."
Sophos Plc, The Pentagon, Abingdon Science Park, Abingdon,
OX14 3YP, United Kingdom.
Company Reg No 2096520. VAT Reg No GB 348 3873 20.
--
