I would like to discuss un-addressable device memory in the context of filesystem and block device. Specificaly how to handle write-back, read, ... when a filesystem page is migrated to device memory that CPU can not access. I intend to post a patchset leveraging the same idea as the existing block bounce helper (block/bounce.c) to handle this. I believe this is worth discussing during summit see how people feels about such plan and if they have better ideas. I also like to join discussions on: - Peer-to-Peer DMAs between PCIe devices - CDM coherent device memory - PMEM - overall mm discussions Cheers, Jérôme -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>