Re: elevator-starvation-4 (2.2.14 && 2.3.42) [was Re: 2.3.42 elevator latency] (fwd)

From: Linus Torvalds (torvalds@transmeta.com)
Date: Wed Feb 09 2000 - 21:44:23 EST


On Thu, 10 Feb 2000, Andrea Arcangeli wrote:
>
> Since I have to break the ->next and queue_head things I'll just drop also
> the head_active thing.

Don't do that. It will break things HORRIBLY. It would be good if all
drivers just always removed the request while performing it, but they
don't. And making those kinds of changes is much more pervasive than just
making some syntactical changes to use a different kind of list..

It's ok to break drivers if they are easily fixable. It's definitely not
ok to break them in ways that make it very hard to fix up.

                Linus

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