From: Jeff Liu <jeff.liu@oracle.com>
Date: Tue, 31 Jul 2012 23:43:18 +0000 (-0700)
Subject: mm/memory.c:print_vma_addr(): call up_read(&mm->mmap_sem) directly
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=51a07e50b230d14e1b8bef50d66655d003fa006c;p=linux-beck.git

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

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

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/memory.c b/mm/memory.c
index 59e5bebc2e35..ec72a616ccd4 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3941,7 +3941,7 @@ 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