Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030401AbWHIBe5 (ORCPT ); Tue, 8 Aug 2006 21:34:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030402AbWHIBe5 (ORCPT ); Tue, 8 Aug 2006 21:34:57 -0400 Received: from smtp-out.google.com ([216.239.45.12]:25322 "EHLO smtp-out.google.com") by vger.kernel.org with ESMTP id S1030401AbWHIBe4 (ORCPT ); Tue, 8 Aug 2006 21:34:56 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=received:message-id:date:from:user-agent: x-accept-language:mime-version:to:cc:subject:references:in-reply-to: content-type:content-transfer-encoding; b=VJEWp4pkpTKYD8A3JTdbAlqmXVQmTbFWq8L3FDQsVPgomL3YsmU7Hp8BRXHhQXZti HqRNkqccMl5F0c1fTPL+w== Message-ID: <44D93BB3.5070507@google.com> Date: Tue, 08 Aug 2006 18:34:43 -0700 From: Daniel Phillips User-Agent: Mozilla Thunderbird 1.0.8 (X11/20060502) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Thomas Graf CC: Peter Zijlstra , linux-mm@kvack.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [RFC][PATCH 2/9] deadlock prevention core References: <20060808193325.1396.58813.sendpatchset@lappy> <20060808193345.1396.16773.sendpatchset@lappy> <20060808211731.GR14627@postel.suug.ch> In-Reply-To: <20060808211731.GR14627@postel.suug.ch> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 593 Lines: 17 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/