Commit e03ad4ee authored by Jens Axboe's avatar Jens Axboe
Browse files

iov_iter: convert import_single_range() to ITER_UBUF 



Since we're just importing a single vector, we don't have to turn it
into an ITER_IOVEC. Instead turn it into an ITER_UBUF, which is cheaper
to iterate.

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 747b1f65

lib/iov_iter.c

+1 −3
Original line number Diff line number Diff line
@@ -1870,9 +1870,7 @@ int import_single_range(int rw, void __user *buf, size_t len, 
	if (unlikely(!access_ok(buf, len)))

		return -EFAULT;



	iov->iov_base = buf;

	iov->iov_len = len;

	iov_iter_init(i, rw, iov, 1, len);

	iov_iter_ubuf(i, rw, buf, len);

	return 0;

}

EXPORT_SYMBOL(import_single_range);