Christoph Lameter wrote:
> + /* Is the user allowed to access the target nodes? */
> + if (!nodes_subset(new, cpuset_mems_allowed(task)))
> + return -EPERM;
> +
How about this ?
+cpuset_update_task_mems_allowed(task, new); (this isn't implemented now
*new* is already guaranteed to be the subset of current mem_allowed.
Is this violate the permission ?
Simon Derr wrote:
Automatically updating the ->mems_allowed field as you suggest would
require that the kernel do the same checks in sys_migrage_pages(). Sounds
not as a very good idea to me.
Hmm, it means a user or admin should modify mem_allowed
before the first page fault after calling sys_migrate_pages().
-- Kame
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