Re: silent semantic changes with reiser4

viro
2004-08-29T18:57:52Z

On Sun, Aug 29, 2004 at 07:36:29PM +0100, viro@parcelfarce.linux.theplanet.co.uk wrote:
> > he wants without recompiling to do it. This kind of a view requires no
> > coding because you can just mount the root filesystem two ways, one with
> > the -nopseudos mount option, and one without it.
>
> *What*?
>
> OK, now I want detailed explanation of the reasons why that doesn't create
> cache coherency problems.
>
> Do you have an analysis of locking in the entire thing?

And I am very, very serious about that - we are talking about very nasty
minefield and design choices in that area have fundamental impact on the
entire layer, wherever it is located.

It's *NOT* something that you can leave until later and hope it somehow
falls into place - it can be merged in steps, but you MUST know the goal
on that level. To rearchitect later might be possible (even though you
will a hell of a time avoiding plugins breakage), but it will be *hard*.