Messages in this thread | | | Date | Fri, 11 Aug 2006 10:15:35 +0400 | From | Evgeniy Polyakov <> | Subject | Re: [take6 1/3] kevent: Core files. |
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On Thu, Aug 10, 2006 at 05:56:39PM -0700, Andrew Morton (akpm@osdl.org) wrote: > > Per kevent fd. > > I have some ideas about better mmap ring implementation, which would > > dinamically grow it's buffer when events are added and reuse the same > > place for next events, but there are some nitpics unresolved yet. > > Let's not see there in next releases (no merge of course), until better > > solution is ready. I will change that area when other things are ready. > > This is not a problem with the mmap interface per-se. If the proposed > event code permits each user to pin 160MB of kernel memory then that would > be a serious problem.
The main disadvantage is that all memory is allocated on the start even if it will not be used later. I think dynamic grow is appropriate solution, since user will have that memory used anyway, since kevents are allocated, just part of them will be allocated from possibly mmaped memory.
-- Evgeniy Polyakov - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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