Re: vm locking question

[Alan Cox]

> For the atomic ps I'd like to scan the memory maps of all processes
> without sleeping. This means I can't grab mmap_sem like the procfs
> code does. I'm thinking of doing something like this:

Why do you want an atomic ps - nobody else has one

If you are about to answer 'for a consistent view of the machine' then 
remember you broke the true view of the machine  firstly by running ps
and secondly by taking locks and thus changing the synchronization or
lack thereof between events