hi,all, I am puzzle that how to mmap ( V4L2_MEMORY_MMAP) in videobuf-dma-sg.c? In this file, it alloc the momery using vmalloc_32() , and put this momery into sglist table,and then use dma_map_sg() to create sg dma at __videobuf_iolock() function. but in __videobuf_mmap_mapper(), i canot understand how it do the mmap? why it not use the remap_vmalloc_range() to do the mmap? Thanks , -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
