commit 51a07e50b230d14e1b8bef50d66655d003fa006c
author Jeff Liu <jeff.liu@oracle.com> Tue Jul 31 16:43:18 2012 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Tue Jul 31 18:42:43 2012 -0700
tree 20e79dbe3e7d86f23ff6d877a68eea0c00aabeee
parent 8e125cd85517c9716695b0abfabc0a4a3fcb94f3

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>

mm/memory.c

diff --git a/mm/memory.c b/mm/memory.c
index 59e5beb..ec72a61 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3941,7 +3941,7 @@
 			free_page((unsigned long)buf);
 		}
 	}
-	up_read(&current->mm->mmap_sem);
+	up_read(&mm->mmap_sem);
 }
 
 #ifdef CONFIG_PROVE_LOCKING