Re: [PATCH] update consumers of MSG_MORE to recognize MSG_SENDPAGE_NOTLAST

[Shawn Landden]

On Mon, Nov 25, 2013 at 7:36 AM, Shawn Landden <shawn@xxxxxxxxxxxxxxx> wrote:
> Commit 35f9c09fe (tcp: tcp_sendpages() should call tcp_push() once)
> added an internal flag MSG_SENDPAGE_NOTLAST, similar to
> MSG_MORE.
>
> algif_hash, algif_skcipher, and udp used MSG_MORE from tcp_sendpages()
> and need to see the new flag as identical to MSG_MORE.
>
> This fixes sendfile() on AF_ALG.
>
> v3: also fix udp
>
> Cc: Tom Herbert <therbert@xxxxxxxxxx>
> Cc: Eric Dumazet <eric.dumazet@xxxxxxxxx>
> Cc: David S. Miller <davem@xxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # 3.4.x + 3.2.x
> Reported-and-tested-by: Shawn Landden <shawnlandden@xxxxxxxxx>
> Original-patch: Richard Weinberger <richard@xxxxxx>
> Signed-off-by: Shawn Landden <shawn@xxxxxxxxxxxxxxx>

>May I ask why you took over the my patch without even CC'in me nor
>replying to the original
>thread "[PATCH] pipe_to_sendpage: Ensure that MSG_MORE is set if we
>set MSG_SENDPAGE_NOTLAST"?
>You are acting very rude.
Not CCing you was an oversight.

>The discussion at the original thread is not done.
>Does skcipher_sendpage() really also need fixing? or UDP?

UDP needs it or it will send out packets mid-sendfile. skcipher needs
it or it will produce incorrect
output like hash.
>I didn't send another patch because I'm waiting for Eric's answer first.
Eric forgot to update consumers internal consumers of MSG_MORE when he created
this distinction in sendpage. That became clear when he first
responded. Changing this where the consumers are makes sense. I just
want this bug fixed, feel free to send your next version.

>Thanks,
>//richard

-Shawn
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