dm: use vzalloc

Use vzalloc() instead of vmalloc()+memset().

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 39becbec4dfe..1a0acb8abdf6 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -174,10 +174,9 @@ static int alloc_area(struct pstore *ps)
         if (!ps->area)
                 goto err_area;
 
-        ps->zero_area = vmalloc(len);
+        ps->zero_area = vzalloc(len);
         if (!ps->zero_area)
                 goto err_zero_area;
-        memset(ps->zero_area, 0, len);
 
         ps->header_area = vmalloc(len);
         if (!ps->header_area)