Re: [PATCH v3] iov_iter: don't revert iov buffer if csum error

From: Al Viro
Date: Wed May 03 2017 - 03:07:54 EST

On Wed, May 03, 2017 at 03:02:32PM +0800, Ding Tianhong wrote:
> The patch 327868212381 (make skb_copy_datagram_msg() preserve
> ->msg_iter on error) will revert the iov buffer if copy to iter
> failed, but it didn't copy any datagram if the skb_checksum_complete
> error, so no need to revert any data at this place.

See a6a5993243550b09f620941dea741b7421fdf79c in mainline...