On Tue, 19 Aug 2014 17:54:14 +0800, lxgeek said: > I want to mmap a kernel memory area which sk_buf->data pointer > into userspace. I want to do this , because this way can reduce a copy > from kernel to userspace. > How to fix it? Or, which book or project can help me ? Look at how other drivers do zero-copy. Hint: mmap is probably not the best way to approach it, because that would require userspace to do something different to use it.
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