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Upgrade it to 512K (which definitely is more than enough). Additionally - one minor tweak around minor IDR locking. Michał Winiarski (3): drm: Don't reserve minors for control nodes drm: Expand max DRM device number to full MINORBITS drm: Use mutex for minors drivers/gpu/drm/drm_drv.c | 45 ++++++++++++++++++--------------------- include/drm/drm_file.h | 1 - 2 files changed, 21 insertions(+), 25 deletions(-)