bcachefs: Use array_size() in call to copy_from_user()

Use array_size() helper, instead of the open-coded version in
call to copy_from_user().

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/chardev.c b/fs/bcachefs/chardev.c
index 08922f7e380a9920fc1377ee1fd1e53dcaadb058..295b1f4e9ece805c62ea1630b89d41a5108268bf 100644 (file)
--- a/fs/bcachefs/chardev.c
+++ b/fs/bcachefs/chardev.c
@@ -360,7 +360,8 @@ static long bch2_ioctl_fsck_offline(struct bch_ioctl_fsck_offline __user *user_a
        init_waitqueue_head(&thr->output.wait);
        darray_init(&thr->output2);
 
-       if (copy_from_user(devs, &user_arg->devs[0], sizeof(user_arg->devs[0]) * arg.nr_devs)) {
+       if (copy_from_user(devs, &user_arg->devs[0],
+                          array_size(sizeof(user_arg->devs[0]), arg.nr_devs))) {
                ret = -EINVAL;
                goto err;
        }