On Fri, Aug 11, 2017 at 10:08:47AM -0700, Matthew Wilcox wrote: > Assuming there's something fun we can do with filesystems that's > interesting to this type of user, what do you think to this: > > Create a block device (maybe it's a loop device, maybe it's dm-raid0) > which supports DAX and uses the page cache to cache the physical pages > of the block device it's fronting. Why not make every block device just support fake DAX and avoid the additional layer? Basically this would be going back to a file cache indexed by physical blocks from our logically indexed page cache model. And for a fs using heavy reflinks that's probably the right model in the end. -- 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>
