When automatically rebinding a NUMA mempolicy of a task
that is moved to a different cpuset, or of the tasks in
a cpuset whose memory placement 'mems' is changed, this
patch adds the code to rebind the mempolicies of the
vma's in the tasks memory space as well.
Signed-off-by: Paul Jackson <[email protected]>
---
mm/mempolicy.c | 13 +++++++++++--
1 files changed, 11 insertions(+), 2 deletions(-)
--- 2.6.14-rc5-mm1-cpuset-patches.orig/mm/mempolicy.c 2005-10-29 21:22:39.068225953 -0700
+++ 2.6.14-rc5-mm1-cpuset-patches/mm/mempolicy.c 2005-10-29 21:30:56.420406908 -0700
@@ -1262,10 +1262,19 @@ static void rebind_policy(struct mempoli
/*
* Someone moved this task to different nodes. Fixup mempolicies.
*
- * TODO - fixup current->mm->vma and shmfs/tmpfs/hugetlbfs policies as well,
- * once we have a cpuset mechanism to mark which cpuset subtree is migrating.
+ * TODO - fixup shmfs/tmpfs/hugetlbfs policies as well.
*/
void numa_policy_rebind(const nodemask_t *old, const nodemask_t *new)
{
+ struct mm_struct *mm = current->mm;
+
+ if (mm) {
+ struct vm_area_struct *vma;
+
+ down_write(&mm->mmap_sem);
+ for (vma = mm->mmap; vma; vma = vma->vm_next)
+ rebind_policy(vma->vm_policy, old, new);
+ up_write(&mm->mmap_sem);
+ }
rebind_policy(current->mempolicy, old, new);
}
--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <[email protected]> 1.650.933.1373
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