Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH] CONFIG_PACKET_MMAP should depend on MMU | Date | Fri, 20 Apr 2007 09:58:52 +0100 |
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Aubrey Li <aubreylee@gmail.com> wrote:
> as checked in packet_set_ring, buffer size must be a multiple of PAGE_SIZE, > --------------------packet_set_ring------------------------ > if (unlikely(req->tp_block_size & (PAGE_SIZE - 1))) > > So why not use __get_free_pages rather than kmalloc,
Because kmalloc() may be able to get us a smaller chunk of memory. Actually, calling __get_free_pages() might be a better, and then release the excess pages.
> so that we have pagetables to count?
There are no pagetables in NOMMU-mode.
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