Messages in this thread | | | Subject | Re: [fuse-devel] OSS Proxy Jack slave | From | Miklos Szeredi <> | Date | Thu, 10 Jun 2010 15:28:08 +0200 |
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On Thu, 10 Jun 2010, Tejun Heo wrote: > Hello, > > Nope, it's not required for osspd but it's a rather strong > limitation on the interface which would be pretty difficult to work > around later. Page protection tricks would be very cumbersome and > unscalable. Hmmm, it does remove the necessity for allocating > kernel pages, right? Still, it seems like a big limitation. Are > you sure this is a good idea?
I'm sure its a good idea to provide an interface that does't _require_ server side mmaps. This doesn't preclude an mmap interface later on, but I'd rather start with a "pure" read/write device interface, which is in a lot of ways simpler to solve than mmap.
As for pinning kernel pages, I still think it's a good idea for the char device interface, but you're right, it's not necessary.
In fact I'm mostly ready with an implementation of store/retrieve that just pokes the regular page cache.
Thanks, Miklos
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