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593c7a3f30
don't unmap compbits_buf explicitly from system vm early but store it in the dmabuf's private data, and unmap it later when all user mappings to that buffer have been disappeared. Bug 1546619 Change-Id: I333235a0ea74c48503608afac31f5e9f1eb4b99b Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/661949 (cherry picked from commit ed2177e25d9e5facfb38786b818330798a14b9bb) Reviewed-on: http://git-master/r/661835 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>