Re: [patch 05/11] syslets: core code

[Ingo Molnar]

* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> And the whole "lock things down in memory" approach is bad. It's doing 
> expensive things like mlock(), making the overhead for _single_ system 
> calls much more expensive. [...]

hm, there must be some misunderstanding here. That mlock is /only/ once 
per the lifetime of the whole 'head' - i.e. per sys_async_register(). 
(And you can even forget i ever did it - it's 5 lines of code to turn 
the completion ring into a swappable entity.)

never does any MMU trick ever enter the picture during the whole 
operation of this thing, and that's very much intentional.

	Ingo
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