提交 52427c9d 编写于 作者: A Akinobu Mita 提交者: David S. Miller

[TUN]: Use iov_length()

Use iov_length() instead of tun's homemade iov_total().
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 02d45827
......@@ -292,17 +292,6 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
return count;
}
static inline size_t iov_total(const struct iovec *iv, unsigned long count)
{
unsigned long i;
size_t len;
for (i = 0, len = 0; i < count; i++)
len += iv[i].iov_len;
return len;
}
static ssize_t tun_chr_aio_write(struct kiocb *iocb, const struct iovec *iv,
unsigned long count, loff_t pos)
{
......@@ -313,7 +302,7 @@ static ssize_t tun_chr_aio_write(struct kiocb *iocb, const struct iovec *iv,
DBG(KERN_INFO "%s: tun_chr_write %ld\n", tun->dev->name, count);
return tun_get_user(tun, (struct iovec *) iv, iov_total(iv, count));
return tun_get_user(tun, (struct iovec *) iv, iov_length(iv, count));
}
/* Put packet to the user space buffer */
......@@ -364,7 +353,7 @@ static ssize_t tun_chr_aio_read(struct kiocb *iocb, const struct iovec *iv,
DBG(KERN_INFO "%s: tun_chr_read\n", tun->dev->name);
len = iov_total(iv, count);
len = iov_length(iv, count);
if (len < 0)
return -EINVAL;
......
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