Re: [-mm][PATCH 3/4] Add rlimit controller accounting and control

[Balbir Singh <balbir@linux.vnet.ibm.com>]

Paul Menage wrote:
> On Thu, May 8, 2008 at 7:35 AM, Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
>>  I currently intend to use this controller for controlling memory related
>>  rlimits, like address space and mlock'ed memory. How about we use something like
>>  "memrlimit"?
> 
> Sounds reasonable.
> 
>>  Good suggestion, but it will be hard if not impossible to account the data
>>  correctly as it changes, if we do the accounting/summation at bind time. We'll
>>  need a really big lock to do it, something I want to avoid. Did you have
>>  something else in mind?
> 
> Yes, it'll be tricky but I think worthwhile. I believe it can be done
> without the charge/uncharge code needing to take a global lock, except
> for when we're actually binding/unbinding, with careful use of RCU.
> 

[snip]

This is an optimization that I am willing to consider later in the project. At
first I want to focus on functionality. I would like to optimize once I know
that the functionality has been well tested by a good base of users and make
sure that the optimization is real.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL

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