diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-06 15:01:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-06 15:01:52 +0100 |
| commit | c39b7eef7d92f5ffef1abf04227a62fa2a6a62b2 (patch) | |
| tree | 00aff822e9208ab2f2ac41c6e1a0f61c6eb9b57f /mm/hugetlb.c | |
| parent | 1e1851f9d725ff9f00d74dfc4b73d47cba57466f (diff) | |
| parent | 049e6dde7e57f0054fdc49102e7ef4830c698b46 (diff) | |
Merge 4.3-rc4 into char-misc-next
This is needed due to the duplicated iommu stuff to help with the merge
and to prevent future issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 999fb0aef8f1..9cc773483624 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3202,6 +3202,14 @@ static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma, continue; /* + * Shared VMAs have their own reserves and do not affect + * MAP_PRIVATE accounting but it is possible that a shared + * VMA is using the same page so check and skip such VMAs. + */ + if (iter_vma->vm_flags & VM_MAYSHARE) + continue; + + /* * Unmap the page from other VMAs without their own reserves. * They get marked to be SIGKILLed if they fault in these * areas. This is because a future no-page fault on this VMA |