On Fri, Dec 23, 2011 at 4:00 AM, Semwal, Sumit <sumit.semwal@xxxxxx> wrote: > On Wed, Dec 21, 2011 at 10:57 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote: >> On Tuesday 20 December 2011, Daniel Vetter wrote: >>> > I'm thinking for a first version, we can get enough mileage out of it by saying: >>> > 1) only exporter can mmap to userspace >>> > 2) only importers that do not need CPU access to buffer.. > > Thanks Rob - and the exporter can do the mmap outside of dma-buf > usage, right? Yes > I mean, we don't need to provide an mmap to dma_buf() > and restrict it to exporter, when the exporter has more 'control' of > the buffer anyways. No, if it is only for the exporter, it really doesn't need to be in dmabuf (ie. the exporter already knows how he is) BR, -R >> > BR, > ~Sumit. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>