Re: [Xenomai-core] RTDM mmap and vm_operations

[Jan Kiszka <jan.kiszka@domain.hid>]

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Rodrigo Rosenfeld Rosas wrote:
> Hi Jan,
> 
> Is there a way of knowing what was the src_addr or pptr data passed to 
> rtdm_mmap_to_user without using the vm_private_data struct? I mean, can I 
> obtain those information directly in the vma struct passed to the close 
> handler? If so, I could pass a more generic struct to vm_private and use 
> those information,making my life a bit easier... :)
> 

I do not see a clean, official way right now. It would definitely be
something you have to obtain via vma_area_struct or something that's
contained in it. The information is likely there - somewhere. But I
doubt that obtaining it would make your code very portable across
different kernel versions.

Jan


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