Driver porting: Zero-copy user-space access

Posted Jun 2, 2007 1:48 UTC (Sat) by yltian (guest, #45556)
In reply to: Driver porting: Zero-copy user-space access by ceb
Parent article: Driver porting: Zero-copy user-space access

Please "grep get_user_pages linux/drivers/media/video/video-buf.c". It's a good example. V4L2 uses this method to share memory betweent DMA and application.