Re: [Announce] BKL shifting into drivers and filesystems - beware

From: Richard Gooch (rgooch@ras.ucalgary.ca)
Date: Thu Jul 13 2000 - 13:18:14 EST


Linus Torvalds writes:
>
>
> On Thu, 13 Jul 2000, Alan Cox wrote:
> >
> > This kind of lock shifting is a major upheaval. It invalidates any device
> > driver testing done in the past weeks when we have been slowly moving towards
> > more stability.
>
> I much rather do it now than later. Later means either: (a) during 2.4.x
> or (b) early in 2.5.x.
>
> (a) is obviously impossiblme. 'Nuff said.
>
> (b) means that we'll have these subtle incomptibilities between the
> release kernel and the development kernel, and backporting of fixes
> etc suddenly becomes much harder.

But at some point you need to cut a new kernel version and live with
it.

> The (b) kind of inconsistency is unavoidable, but I'd rather avoid
> it for the "mindless" kind of lock movement that affects a lot of
> drivers and filesystems, yet is basically very simple ("mindless" !=
> "easy").

Except it will cost us time and stability. Where do you draw the line?

Or even better: when will 2.4 be really, really, *really* released?

                                Regards,

                                        Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca

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