> To me, it looks like mmap2 takes an offset that's a page index, rather > than a byte position. Since linux passes the offset with a 32-bit > long, rather than a 64-bit off_t like we do, they need to do this in > order to be able to map offsets larger than 4GB into a file. > > For linux_mmap2, I'd think we want to do roughly the same things as > linux_mmap, but with bsd_args.pos = ctob((off_t)linux_args.pos) > > Drew > > AHH, ok I was wondering where PAGE_SHIFT was for FreeBSD. I guess ctob does what I need it to. I think that's probably why it still wasn't working yet... I think it also has to be page aligned before you pass it in though, I have to look at linux's do_mmap_pgoff() (I think that's the right function name) to see if it's expecting an already page-aligned arg, or if it's aligning it before it uses it.
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