Messages in this thread | | | Date | Fri, 2 Apr 2004 18:21:12 -0700 | From | Erik Andersen <> | Subject | Re: [PATCH] cowlinks v2 |
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On Sat Apr 03, 2004 at 02:04:25AM +0100, Jamie Lokier wrote: > Here's a tricky situation: > > 1. A file is cowlinked. Then each cowlink is mmap()'d, one per process. > > 2. At this point both mappings share the same pages in RAM. > > 3. Then one of the cowlinks is written to...
Using mmap with PROT_WRITE on a cowlink must preemptively break the link.
-Erik
-- Erik B. Andersen http://codepoet-consulting.com/ --This message was written using 73% post-consumer electrons-- - 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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