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List:       linux-kernel
Subject:    Re: can't mlockall() more than 128MB, is this a kernel limitiation ?
From:       "Andi Kleen" <ak () suse ! de>
Date:       2000-08-06 15:39:24
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On Sun, Aug 06, 2000 at 03:12:52PM +0100, Alan Cox wrote:
> > IMHO, an ordinary user may only lock a limited amount of memory. Maybe it is 
> > wise to specify a certain amount which may *not* be locked. This memory is 
> > reserved for the rest of the processes.
> 
> Right now Linux isnt tracking per user resources. You need the beancounter
> addons to implement per user memory like that

Actually test6-pre* seems to, at least for files and processes.
See linux/kernel/user.c

I guess it would be trivial to use it for mlock too. Of course you still
want a global limit too. Having a few pages mlockable per user per defalt
would be very useful for cryptographic software that does not want its
keys stored on the swap partition.


-Andi

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