From: zhongjiang <zhongjiang@huawei.com>
To: akpm@linux-foundation.org
Cc: mgorman@techsingularity.net, hannes@cmpxchg.org, vbabka@suse.cz,
kirill.shutemov@linux.intel.com, linux-mm@kvack.org
Subject: [PATCH] mm: fix the memory leak after collapsing the huge page fails
Date: Tue, 9 May 2017 16:12:37 +0800 [thread overview]
Message-ID: <1494317557-49680-1-git-send-email-zhongjiang@huawei.com> (raw)
From: zhong jiang <zhongjiang@huawei.com>
Current, when we prepare a huge page to collapse, due to some
reasons, it can fail to collapse. At the moment, we should
release the preallocate huge page.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
---
mm/khugepaged.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 7cb9c88..3f5749e 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1080,6 +1080,7 @@ static void collapse_huge_page(struct mm_struct *mm,
result = SCAN_SUCCEED;
out_up_write:
up_write(&mm->mmap_sem);
+ put_page(new_page);
out_nolock:
trace_mm_collapse_huge_page(mm, isolated, result);
return;
--
1.8.3.1
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next reply other threads:[~2017-05-09 8:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-09 8:12 zhongjiang [this message]
2017-05-09 8:42 ` Vlastimil Babka
2017-05-09 9:25 ` zhong jiang
2017-05-09 9:57 ` zhong jiang
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