Simon Derr wrote:
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 ?
Oh, I misunderstood your mail.
I thought you wanted to automatically add extra nodes to the cpuset,
but you actually want to do just the opposite, i.e restrict the nodemask
for this task to the one passed to sys_migrate_pages(). Is that right ?
yes.
Anyway, we should modify task's mem_allowed before the first page fault.
-- Kame
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