btrfs-progs: use calloc instead of malloc+memset

This patch is generated from a coccinelle semantic patch:

	identifier t;
	expression e;
	statement s;
	@@
	-t = malloc(e);
	+t = calloc(1, e);
	(
	if (!t) s
	|
	if (t == NULL) s
	|
	)
	-memset(t, 0, e);

Signed-off-by: Silvio Fricke <silvio.fricke@gmail.com>
[squashed patches into one]
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/volumes.c b/volumes.c
index ca50f1ce..83ddd161 100644
--- a/volumes.c
+++ b/volumes.c
@@ -1968,10 +1968,9 @@ static void split_eb_for_raid56(struct btrfs_fs_info *info,
 		if (raid_map[i] >= BTRFS_RAID5_P_STRIPE)
 			break;
 
-		eb = malloc(sizeof(struct extent_buffer) + stripe_len);
+		eb = calloc(1, sizeof(struct extent_buffer) + stripe_len);
 		if (!eb)
 			BUG();
-		memset(eb, 0, sizeof(struct extent_buffer) + stripe_len);
 
 		eb->start = raid_map[i];
 		eb->len = stripe_len;