Re: [RFC] Slab: Enforce clean node lists per zone, add policy support and fallback

[Paul Jackson <pj@sgi.com>]

> You are confusing two issues in the migration code. The case of 
> sys_migrate_page was fixed by you by changing the cpuset context. Thats 
> fine and we do not need __GFP_THISNODE there because the page are to be 
> allocated in conformity with a cpuset context of a process.

Ah - ok.  Yes, I was looking for the constraints of the new, destination
cpuset, rather than the tasks curent cpuset.  And I was not looking for
exact __GFP_THISNODE placement.  So I was talking about a separate case.

Minor confusion with a confusion ... I don't know why you mentioned
'sys_migrate_page' -- that wasn't what I was referring to.  I was
referring to my cpuset_migrate_mm() hack, which is involved in the two
cases:
    1) a task is put in a cpuset that is marked 'memory_migrate', or
    2) a task is in a cpuset marked 'memory_migrate' and that cpusets
       'mems' are changed.

In any case ... nevermind ;).

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@sgi.com> 1.925.600.0401

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