Messages in this thread | | | Subject | Re: [fuse-devel] [PATCH] FUSE/CUSE: implement direct mmap support | From | Miklos Szeredi <> | Date | Thu, 11 Feb 2010 13:34:42 +0100 |
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On Thu, 11 Feb 2010, Tejun Heo wrote: > It's not like it's something completely foreign. It's a limitation > which can also be found in shared memory and the server side mmap > doesn't really have much to do with it. It's also necessary to avoid > aliasing issues among clients.
What aliasing issues among clients? That's a job for the arch dependent part of mmap. And as you said, there's not a lot the driver can do (except play with ->vm_pgoff) to influence the address selection.
And playing with ->vm_pgoff is *not* a valid thing to do for the client, at least not on "normal" mmaps.
Thanks, Miklos
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