User-space doesn't need to keep track of blobs that might be in use by the kernel. User-space can just destroy blobs as soon as they don't need them anymore.
Signed-off-by: Simon Ser contact@emersion.fr Cc: Pekka Paalanen ppaalanen@gmail.com Cc: Daniel Vetter daniel@ffwll.ch Cc: Jonas Ådahl jadahl@gmail.com --- include/uapi/drm/drm_mode.h | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 863eda048265..f7c41aa4b5eb 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -924,6 +924,10 @@ struct drm_mode_create_blob { * struct drm_mode_destroy_blob - Destroy user blob * @blob_id: blob_id to destroy * Destroy a user-created blob property. + * + * Blobs are reference-counted by the kernel, so user-space can destroy them as + * soon as they're done with them. For instance user-space can destroy a blob + * used in an atomic commit right after performing the atomic commit ioctl. */ struct drm_mode_destroy_blob { __u32 blob_id;