linux-kernel - Re: [PATCH v3] net: Unmap fragment page once iterator is done

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Message-Id: <20130625.162054.890870423042371628.davem@davemloft.net>
Date:	Tue, 25 Jun 2013 16:20:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	wedsonaf@...il.com
Cc:	sergei.shtylyov@...entembedded.com, tgraf@...g.ch,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] net: Unmap fragment page once iterator is done

From: Wedson Almeida Filho <wedsonaf@...il.com>
Date: Mon, 24 Jun 2013 18:25:20 -0700

> Callers of skb_seq_read() are currently forced to call skb_abort_seq_read()
> even when consuming all the data because the last call to skb_seq_read (the
> one that returns 0 to indicate the end) fails to unmap the last fragment page.
> 
> With this patch callers will be allowed to traverse the SKB data by calling
> skb_prepare_seq_read() once and repeatedly calling skb_seq_read() as originally
> intended (and documented in the original commit 677e90eda - "[NET]: Zerocopy
> sequential reading of skb data"), that is, only call skb_abort_seq_read() if
> the sequential read is actually aborted.
> 
> Signed-off-by: Wedson Almeida Filho <wedsonaf@...il.com>

This patch doesn't even come close to applying to the net-next tree,
please respin this patch properly and resubmit.

Thanks.
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