Alex Waterman e323f562b2 gpu: nvgpu: Keep lock while unreffing mappings ...

In the vm_area free code, when unreffing the mappings owned by
the vm_area, we need to continue holding the VM lock.

Also add a comment specifying this requirement in the VM code.

Bug 2156667

Change-Id: If0b430f045e4c585fcba2d3176163e5b19be8326
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1763235
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2018-06-28 11:14:04 -07:00

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