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Date: Sat, 14 Nov 2009 09:12:30 +0800 From: Herbert Xu <herbert@...dor.apana.org.au> To: Gregory Haskins <ghaskins@...ell.com> Cc: "Michael S. Tsirkin" <mst@...hat.com>, alacrityvm-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: [RFC PATCH] net: add dataref destructor to sk_buff On Tue, Nov 10, 2009 at 10:45:16AM -0500, Gregory Haskins wrote: > > What I am getting at is as follows: From a real basic perspective, you > can look at all of this as a simple synchronous call (i.e. sendmsg()). > The "app" (be it a userspace app, or a guest) prepares a buffer for > transmission, and offers it to the next layer in the stack. The app > must maintain the integrity of that buffer at least until the layer > below it signifies that it is "consumed". This may mean its a > synchronous call, like sendmsg(), or it may be asynchronous, like AIO. Neither sendmsg() nor sendfile() is synchronous in the way you imagine. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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