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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-01 14:10:07 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-01-01 14:49:26 +0000 |
| commit | f17b898009d8c979340ff9b68bee1232f00d1d42 (patch) | |
| tree | 5ca78ead9b34be0c91a2c402fc46008f65e7bd08 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | drm/i915: Add Wa_1407352427:icl,ehl (diff) | |
| download | wireguard-linux-f17b898009d8c979340ff9b68bee1232f00d1d42.tar.xz wireguard-linux-f17b898009d8c979340ff9b68bee1232f00d1d42.zip | |
drm/i915/gem: Drop local vma->vm_file reference
We use the global device inode, shared amongst all files, and not the
user's device filp to provide the backing storage for the mmap. The
vma->vm_file provides a redundant reference that breaks existing
expected behaviour that closing the user's device fd will release the
resources bound to it, if a mmap persists. (Even without the
vma->vm_file, the mmap will persist past the user's fd as the storage is
bound to the device, i.e. our reference is on the object not file.)
Fixes: cc662126b413 ("drm/i915: Introduce DRM_I915_GEM_MMAP_OFFSET")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/919
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200101141007.755429-1-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions