[Bug 789952] fdmemory: need unmap if mapping flags are not subset of previous

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=789952

--- Comment #6 from Haihua Hu <jared.hu at nxp.com> ---
(In reply to Nicolas Dufresne (stormer) from comment #5)
> I'm sorry, there is nothing to revert upstream, this flag is not set on the
> DMABuf allocator. Not sure why it is for you.

Sorry for that, there is an internal patch on my side which change dmabuf to
keep mapped. But this is really a problem for a subclass of fbmemory which set
this flags. The flag is not so smarter as we think

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