On Tuesday 2008-06-17 11:06, Maxim Shchetynin wrote: > >> (a) What is axonram? >> (b) why is axonram direct_access, and my other devices (including >> standard PC RAM) not? > >[Axonram is a module specific for IBM CellBlade and allows access to >a DDR2 memory attached onto Axon controller.] You don't need >direct_access and not azfs for main memory because there is already >a pretty nice tmpfs for it. So the reason azfs could be useful is...? >> >+ Mounting such device with azfs gives memory mapped >> >access to the + underlying memory to user space. >> >> Can't I just mmap(/dev/theblockdevice), why would I need to go through >> azfs? > >Yes, you can mmap it. But what does it have to do with a file system. Exactly, that's what I was asking myself. >I would say you can either mmap it or place a file system on it. The help text implies that I *need* azfs to mmap it - and that sounds like a Rube Goldberg machine. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
