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Date: Tue, 13 Jan 2009 20:25:31 -0800 (PST) From: David Miller <davem@...emloft.net> To: herbert@...dor.apana.org.au Cc: zbr@...emap.net, dada1@...mosbay.com, w@....eu, ben@...s.com, jarkao2@...il.com, mingo@...e.hu, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, jens.axboe@...cle.com Subject: Re: [PATCH] tcp: splice as many packets as possible at once From: Herbert Xu <herbert@...dor.apana.org.au> Date: Wed, 14 Jan 2009 14:51:24 +1100 > Unfortunately this won't work, not even for network destinations. > > The reason is that this gets called as soon as the destination's > splice hook returns, for networking that means when sendpage returns. > > So by that time we'll still be left with just a page reference > on a page where the slab memory may already have been freed. > > To make this work we need to get the destination's splice hooks > to acquire this reference. Yes I realized this after your earlier posting today. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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