| From | Joonsoo Kim <> | Subject | [PATCH v2 05/20] mm, hugetlb: grab a page_table_lock after page_cache_release | Date | Fri, 9 Aug 2013 18:26:23 +0900 |
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We don't need to grab a page_table_lock when we try to release a page. So, defer to grab a page_table_lock.
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index c017c52..6c8eec2 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2627,10 +2627,11 @@ retry_avoidcopy: } spin_unlock(&mm->page_table_lock); mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end); - /* Caller expects lock to be held */ - spin_lock(&mm->page_table_lock); page_cache_release(new_page); page_cache_release(old_page); + + /* Caller expects lock to be held */ + spin_lock(&mm->page_table_lock); return 0; } -- 1.7.9.5
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