Messages in this thread | | | Date | Fri, 13 Nov 2009 20:33:35 -0500 | From | Gregory Haskins <> | Subject | Re: [RFC PATCH] net: add dataref destructor to sk_buff |
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Herbert Xu wrote: > 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.
Well, not with respect to the overall protocol, of course not. But with respect to the buffer in question, it _has_ to be. Or am I missing something?
Kind Regards, -Greg
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