Messages in this thread | | | Date | Tue, 3 Oct 2017 08:37:00 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH v4 4/5] cramfs: add mmap support |
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On Tue, Oct 03, 2017 at 11:30:50AM -0400, Nicolas Pitre wrote: > Unless you have a better scheme altogether to suggest of course, given > the existing constraints.
I still can't understand why this convoluted fault path that finds vma, attempts with all kinds of races and then tries to update things like vm_ops is even nessecary.
We have direct mappings of physical address perfectly working in the DAX code (even with write support!) or in drivers using remap_pfn_range so a really good explanation why neither scheme can be used is needed first.
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