On 11/13/2012 06:12 AM, Mel Gorman wrote:
From: Peter Zijlstra <[email protected]>
Add another layer of fallback policy to make the home node concept
useful from a memory allocation PoV.
This changes the mpol order to:
- vma->vm_ops->get_policy [if applicable]
- vma->vm_policy [if applicable]
- task->mempolicy
- tsk_home_node() preferred [NEW]
- default_policy
Why is the home node policy not the default policy?
Note that the tsk_home_node() policy has Migrate-on-Fault enabled to
facilitate efficient on-demand memory migration.
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: Paul Turner <[email protected]>
Cc: Lee Schermerhorn <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Linus Torvalds <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Signed-off-by: Mel Gorman <[email protected]>
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