mm/mmap.c: mark function as static

Mark function as static in mmap.c because they are not used outside this
file.

This eliminates the following warning in mm/mmap.c:

  mm/mmap.c:407:6: warning: no previous prototype for `validate_mm' [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <[email protected]>
Reviewed-by: Josh Triplett <[email protected]>
Reviewed-by: Rik van Riel <[email protected]>
Acked-by: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index 81ba54ff96c7..ac1d6671b1ed 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -405,7 +405,7 @@ static void validate_mm_rb(struct rb_root *root, struct vm_area_struct *ignore)
 	}
 }
 
-void validate_mm(struct mm_struct *mm)
+static void validate_mm(struct mm_struct *mm)
 {
 	int bug = 0;
 	int i = 0;