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mm/memory.c: print_vma_addr() call up_read(&mm->mmap_sem) directly

PATCH Superseded Jeff Liu 1 participant 1 message Jun 27, 2012

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Jeff Liu

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PATCH 1/1 mm/memory.c: print_vma_addr() call up_read(&mm->mmap_sem) directly

Hello,

We can call up_read(&mm->mmap_sem) directly since we have already got mm via current->mm at the beginning of print_vma_addr().

Thanks,
-Jeff

Signed-off-by Jie Liu <[email protected]>
---
 mm/memory.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
mm/memory.c +1 -1
index 2466d12..6e49113 100644
@@ -3929,7 +3929,7 @@ void print_vma_addr(char *prefix, unsigned long ip)
 			free_page((unsigned long)buf);
 		}
 	}
-	up_read(&current->mm->mmap_sem);
+	up_read(&mm->mmap_sem);
 }
 
 #ifdef CONFIG_PROVE_LOCKING
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1.7.9

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