[PATCH 3.4 04/27] macvtap: update file current position

[Greg Kroah-Hartman]

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>

[ Upstream commit e6ebc7f16ca1434a334647aa56399c546be4e64b ]

Signed-off-by: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/macvtap.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -905,6 +905,8 @@ static ssize_t macvtap_aio_read(struct k
 
 	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;
 }


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