linux-kernel - Re: [PATCH v2] [NET]: Unmap fragment page once iterator is done

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Message-ID: <51C820E7.6040004@cogentembedded.com>
Date:	Mon, 24 Jun 2013 14:35:19 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Wedson Almeida Filho <wedsonaf@...il.com>
CC:	"David S. Miller" <davem@...emloft.net>,
	Thomas Graf <tgraf@...g.ch>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] [NET]: Unmap fragment page once iterator is done

Hello.

On 24-06-2013 10:33, Wedson Almeida Filho wrote:

> 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), that is, only call

    Please also specify the summary line of that commit.

> skb_abort_seq_read() if the sequential read is actually aborted.

> Signed-off-by: Wedson Almeida Filho <wedsonaf@...il.com>

WBR, Sergei

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