The advantage of kcalloc is, that will prevent integer overflows which could result from the multiplication of number of elements and size and it is also a bit nicer to read.
The semantic patch that makes this change is available in https://lkml.org/lkml/2011/11/25/107 Signed-off-by: Thomas Meyer <[email protected]> --- diff -u -p a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c --- a/fs/btrfs/volumes.c 2011-11-28 19:36:48.113451068 +0100 +++ b/fs/btrfs/volumes.c 2011-11-28 19:48:10.374677247 +0100 @@ -2450,7 +2450,7 @@ static int __btrfs_alloc_chunk(struct bt max_chunk_size = min(div_factor(fs_devices->total_rw_bytes, 1), max_chunk_size); - devices_info = kzalloc(sizeof(*devices_info) * fs_devices->rw_devices, + devices_info = kcalloc(fs_devices->rw_devices, sizeof(*devices_info), GFP_NOFS); if (!devices_info) return -ENOMEM; -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
