[PATCH 10/54] md/raid1: Use kcalloc() in alloc_behind_pages()

[SF Markus Elfring]

From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 4 Oct 2016 15:01:04 +0200

* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kcalloc".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data structure by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/md/raid1.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 1961d82..d2759f8 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -955,8 +955,7 @@ static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio)
 {
 	int i;
 	struct bio_vec *bvec;
-	struct bio_vec *bvecs = kzalloc(bio->bi_vcnt * sizeof(struct bio_vec),
-					GFP_NOIO);
+	struct bio_vec *bvecs = kcalloc(bio->bi_vcnt, sizeof(*bvecs), GFP_NOIO);
 	if (unlikely(!bvecs))
 		return;
 
-- 
2.10.1