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OpenCloudOS-Kernel
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[TUN]: Use iov_length() 

Use iov_length() instead of tun's homemade iov_total().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Akinobu Mita 2007-11-19 22:46:51 -08:00 committed by David S. Miller
parent 02d45827fa
commit 52427c9d11
1 changed files with 2 additions and 13 deletions
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15
drivers/net/tun.c
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@ -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;