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Re: When should ralloc.c be used?

From: Eli Zaretskii
Subject: Re: When should ralloc.c be used?
Date: Fri, 28 Oct 2016 10:46:06 +0300

> From: Daniel Colascione <address@hidden>
> Cc: Stefan Monnier <address@hidden>,  address@hidden,  address@hidden
> Date: Thu, 27 Oct 2016 23:23:05 -0700
> We're talking about setting aside address space only, not asking
> the OS to make guarantees about future memory availability.  All major
> operating systems, even ones like Windows that don't do overcommit,
> provide ways to reserve address space without asking the OS to guarantee
> availability of memory.

Not sure I understand you: if a portion of the address space has been
reserved, how come these addresses won't be available when we try to
commit them later?  There might not be physical pages available for
that, but virtual memory for those addresses must be available, no?

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