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.
Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com> diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 35ccdad..255bd9e 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2630,10 +2630,11 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/