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Re: memory mapped files on jffs?
> Is it possible to create a large contiguous file via jffs on a flash
> device that can be memory mapped so that it can be treated as an
Yes and no.
You can mmap it read-only. What you can't do is have a shared writable
We don't support shared writable mappings because it could mean writing out
a whole 4KiB page each time a single byte on the page is changed. I suppose
we could play games in writepage() with comparing the contents of the dirty
page with the previous contents of the file. We don't do that. I don't
really fancy trying to write it either :)
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