[RFC v3] fiber: Increase default stack size
gorcunov at gmail.com
Tue Feb 26 15:54:57 MSK 2019
On Tue, Feb 26, 2019 at 03:34:56PM +0300, Vladimir Davydov wrote:
> > If we want to scatter we should simply put marks at page bounds.
> > Dirtifying somewhere inside middle of a page is useless.
> Hmm, why? Consider the example with PATH_MAX buffer. Putting dirty marks
> at page boundaries doesn't guarantee any of them will get overwritten by
> the buffer if only a few hundred of bytes are used. I think we should
> dirty the last page or two at random intervals - this should increase
> the chance that at least one mark is overwritten by any function that is
> eager for the stack.
Ah, I got what you mean. Look, maybe we should consider pagemap too?
iirc readin pagemap should be cheap but need to read the code though,
will try once time permit.
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