Re: [ckrm-tech] [RFC][PATCH 4/7] UBC: syscalls (user interface)

Srivatsa Vaddagiri
2006-08-17T12:16:59Z

On Wed, Aug 16, 2006 at 07:39:43PM +0400, Kirill Korotaev wrote:

> +/*
> + * The setbeanlimit syscall
> + */
> +asmlinkage long sys_setublimit(uid_t uid, unsigned long resource,
> + unsigned long *limits)
> +{

[snip]

> + spin_lock_irqsave(&ub->ub_lock, flags);
> + ub->ub_parms[resource].barrier = new_limits[0];
> + ub->ub_parms[resource].limit = new_limits[1];

Would it be usefull to notify the "resource" controller about this
change in limits? For ex: in case of the CPU controller I wrote
(http://lkml.org/lkml/2006/8/4/9), I was finding it usefull to recv
notification of changes to these limits, so that internal structures
(which are kept per-task-group) can be updated.

--
Regards,
vatsa