Re: [FAQ] ARG_MAX and POSIX

[Andreas Schwab]

address@hidden (Bob Proulx) writes:

> Hi Ralf,
>
> Ralf Wildenhues wrote:
>> You may be interested in that Linux 2.6.23 will remove this limit, see
>> <http://lwn.net/Articles/246528/>.
>
> I am very happy to see the limit removed.  But did I read that log
> message correctly that this is achieved by adding an additional copy
> of all of the data?

There is no additional copy.  Instead of copying the strings via kernel
pages that are later mapped into the new process's VM the data is now
directly copied into the destination VM.  Previously, the new process's
VM didn't exist yet at the time when the copy was made.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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