The patch titled
Subject: dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3
has been added to the -mm tree. Its filename is
dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3.patch
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------------------------------------------------------
From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Subject: dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3
v3: Minor updates from Mel. Change code layout.
Link: http://lkml.kernel.org/r/1476382117-5440-1-git-send-email-andi@xxxxxxxxxxxxxx
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mprotect.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff -puN mm/mprotect.c~dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3 mm/mprotect.c
--- a/mm/mprotect.c~dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3
+++ a/mm/mprotect.c
@@ -70,16 +70,16 @@ static unsigned long change_pte_range(st
pte_t *pte, oldpte;
spinlock_t *ptl;
unsigned long pages = 0;
- int target_node = -1;
+ int target_node = NUMA_NO_NODE;
pte = lock_pte_protection(vma, pmd, addr, prot_numa, &ptl);
if (!pte)
return 0;
- if (prot_numa &&
- !(vma->vm_flags & VM_SHARED) &&
+ /* Get target node for single threaded private VMAs */
+ if (prot_numa && !(vma->vm_flags & VM_SHARED) &&
atomic_read(&vma->vm_mm->mm_users) == 1)
- target_node = cpu_to_node(raw_smp_processor_id());
+ target_node = numa_node_id();
arch_enter_lazy_mmu_mode();
do {
_
Patches currently in -mm which might be from ak@xxxxxxxxxxxxxxx are
dont-touch-single-threaded-ptes-which-are-on-the-right-node.patch
dont-touch-single-threaded-ptes-which-are-on-the-right-node-v3.patch
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