| Message ID | 1389309497-31895-1-git-send-email-kamal@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 6c8930e..843ab0b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -935,6 +935,13 @@ void task_numa_work(struct callback_head *work) if (vma->vm_end - vma->vm_start < HPAGE_SIZE) continue; + /* + * Skip inaccessible VMAs to avoid any confusion between + * PROT_NONE and NUMA hinting ptes + */ + if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE))) + continue; + do { start = max(start, vma->vm_start); end = ALIGN(start + (pages << PAGE_SHIFT), HPAGE_SIZE);
This is a note to let you know that I have just added a patch titled sched: numa: skip inaccessible VMAs to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue This patch is scheduled to be released in version 3.8.13.16. If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.8.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Kamal ------ From 955cdb0e6d509d5308097b071d3ece580acd72d0 Mon Sep 17 00:00:00 2001 From: Mel Gorman <mgorman@suse.de> Date: Wed, 18 Dec 2013 17:08:40 -0800 Subject: sched: numa: skip inaccessible VMAs commit 3c67f474558748b604e247d92b55dfe89654c81d upstream. Inaccessible VMA should not be trapping NUMA hint faults. Skip them. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- kernel/sched/fair.c | 7 +++++++ 1 file changed, 7 insertions(+) -- 1.8.3.2