linux-kernel - Re: [RFC][PATCH 2/9] deadlock prevention core

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Message-ID: <44D93BB3.5070507@google.com>
Date:	Tue, 08 Aug 2006 18:34:43 -0700
From:	Daniel Phillips <phillips@...gle.com>
To:	Thomas Graf <tgraf@...g.ch>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [RFC][PATCH 2/9] deadlock prevention core

Thomas Graf wrote:
  > skb->dev is not guaranteed to still point to the "allocating" device
> once the skb is freed again so reserve/unreserve isn't symmetric.
> You'd need skb->alloc_dev or something.

Can you please characterize the conditions under which skb->dev changes
after the alloc?  Are there writings on this subtlety?

Regards,

Daniel

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