Re: Race between vmtruncate and mapped areas?

[Dave McCracken]

--On Wednesday, May 14, 2003 15:04:55 -0400 Rik van Riel <[e-mail]>
wrote:

>> Not to mention they could end up being outside of any VMA,
>> meaning there's no sane way to deal with them.
> 
> I hate to follow up to my own email, but the fact that
> they're not in any VMA could mean we leak these pages
> at exit() time.

Well, they are still inside the vma.  Truncate doesn't shrink the vma.  It
just generates SIGBUS when the app tries to fault the pages in.

Dave

======================================================================
Dave McCracken          IBM Linux Base Kernel Team      1-512-838-3059
[e-mail]                                        T/L   678-3059