macvtap: update file current position

[ Upstream commit e6ebc7f16ca1434a334647aa56399c546be4e64b ]

Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index dc76670..688d983 100644 (file)
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -886,6 +886,8 @@ static ssize_t macvtap_aio_read(struct kiocb *iocb, const struct iovec *iv,
 
        ret = macvtap_do_read(q, iocb, iv, len, file->f_flags & O_NONBLOCK);
        ret = min_t(ssize_t, ret, len); /* XXX copied from tun.c. Why? */
+       if (ret > 0)
+               iocb->ki_pos = ret;
 out:
        return ret;
 }