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SubjectRe: [PATCH 11/13] sched: Check current->mm before allocating NUMA faults
On Wed, Jul 03, 2013 at 03:21:38PM +0100, Mel Gorman wrote:
> @@ -1072,16 +1076,18 @@ void task_numa_work(struct callback_head *work)
> end = ALIGN(start + (pages << PAGE_SHIFT), HPAGE_SIZE);
> end = min(end, vma->vm_end);
> nr_pte_updates += change_prot_numa(vma, start, end);
> - pages -= (end - start) >> PAGE_SHIFT;
> -
> - start = end;
>
> /*
> * Scan sysctl_numa_balancing_scan_size but ensure that
> - * least one PTE is updated so that unused virtual
> - * address space is quickly skipped
> + * at least one PTE is updated so that unused virtual
> + * address space is quickly skipped.
> */
> - if (pages <= 0 && nr_pte_updates)
> + if (nr_pte_updates)
> + pages -= (end - start) >> PAGE_SHIFT;
> +
> + start = end;
> +
> + if (pages <= 0)
> goto out;
> } while (end != vma->vm_end);

This hunk is a rebasing error that should have been in the previous
patch. Fixed now.

--
Mel Gorman
SUSE Labs


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