diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-10-08 10:52:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-10-08 10:52:18 +0200 |
| commit | d3df65c198dc2f1deefb73c8427b04d1bdd1b18d (patch) | |
| tree | f348c249146e2a1bbe2040ebecb0c529f5449b84 /mm/hugetlb.c | |
| parent | 712df65ccb63da08a484bf57c40b250dfd4103a7 (diff) | |
| parent | 00e6fa5fe15c0eccc95a9d1afc4615e467ee8dc9 (diff) | |
Merge branch 'perf/urgent' into perf/core, before pulling new changes
Signed-off-by: Ingo Molnar <mingo@kernel.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 |