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graphdriver: Fix RefCounter memory leak

Signed-off-by: WANG Chao <chao.wang@ucloud.cn>

WANG Chao authored on 2018/02/08 16:44:20
Showing 1 changed files
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@@ -54,6 +54,9 @@ func (c *RefCounter) incdec(path string, infoOp func(minfo *minfo)) int {
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 	}
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 	infoOp(m)
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 	count := m.count
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+	if count <= 0 {
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+		delete(c.counts, path)
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+	}
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 	c.mu.Unlock()
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 	return count
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 }