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Subject[PATCH 3/3] flush_tlb_range() needs ->page_table_lock when ->mmap_sem is not held

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
mm/hugetlb.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 5f34bd8..a876871 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2277,8 +2277,8 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
set_page_dirty(page);
list_add(&page->lru, &page_list);
}
- spin_unlock(&mm->page_table_lock);
flush_tlb_range(vma, start, end);
+ spin_unlock(&mm->page_table_lock);
mmu_notifier_invalidate_range_end(mm, start, end);
list_for_each_entry_safe(page, tmp, &page_list, lru) {
page_remove_rmap(page);
--
1.7.2.5


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