On 11/13/2012 06:12 AM, Mel Gorman wrote:
From: Peter Zijlstra <a.p.zijls...@chello.nl>
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 <a.p.zijls...@chello.nl>
Cc: Paul Turner <p...@google.com>
Cc: Lee Schermerhorn <lee.schermerh...@hp.com>
Cc: Christoph Lameter <c...@linux.com>
Cc: Rik van Riel <r...@redhat.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Ingo Molnar <mi...@kernel.org>
Signed-off-by: Mel Gorman <mgor...@suse.de>
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