Messages in this thread | | | Date | Sat, 3 Apr 2004 02:59:20 +0100 | From | Jamie Lokier <> | Subject | Re: [PATCH] cowlinks v2 |
| |
Erik Andersen 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.
I forget to mention, they are PROT_READ shared mappings.
-- Jamie - 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/
| |