dma-buf destructor support is useful as it allows clients an opportunity
to undo any attributes, such as security attributes, they have applied to
the dma-buf's memory.
The destructor is called when the dma-buf is freed, if the destructor
returns an error the dma-buf's exporter release function is not called in
order to ensure that memory which has not been properly cleaned up isn't
returned to the system.
Signed-off-by: Liam Mark <lmark@codeaurora.org>
Signed-off-by: Swathi Sridhar <swatsrid@codeaurora.org>
[surenb: cherry-picked from:
3af4db1543c9 "dma-buf: Add support to set a destructor on a dma-buf"]
Bug: 150611569
Test: build
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I2d435b99fb9b1747bc1b32a4e0d484957614a5a3
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Liam Mark
345084a2ed