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Date: Tue, 8 May 2007 14:36:11 +0300 From: Al Boldi <a1426z@...ab.com> To: "H. Peter Anvin" <hpa@...or.com> Cc: Dmitry Krivoschekov <dmitry.krivoschekov@...il.com>, linux-kernel@...r.kernel.org Subject: Re: Execute in place H. Peter Anvin wrote: > Al Boldi wrote: > >> What you're talking about is, *and should be*, a different filesystem. > >> You will relatively quickly find that you have to deal with the same > >> kind of stuff that you have to in any filesystem. > > > > That's exactly what I want to avoid, as this would introduce a > > performance penalty. > > > > All we need is a periodically synced tmpfs to mmap, with a minimal > > stream into page-cache algo on mount. > > ... which would be completely useless, because you wouldn't get any sort > of coherency; you would have pointers pointing into space, etc. etc. You don't really think that anybody is suggesting to store the tmpfs data without any coherency, do you? I am suggesting that you can easily isolate tmpfs coherency from the rest of the page-cache, by simply streaming tmpfs data out to an mmap and plugging it with the tmpfs fat on umount. And streaming things back in on mount. > Sorry, it's useless. Persisting tmpfs is useful for the mere case of saving you the need to repopulate on mount. Thanks! -- Al - 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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